chore(release): bump version to 4.3.1

Extended action management to support groups in addition to UPS devices:

Changes:
- Auto-detects whether target ID is a UPS or group
- All action commands now work with both UPS and groups:
  * nupst action add <ups-id|group-id>
  * nupst action remove <ups-id|group-id> <index>
  * nupst action list [ups-id|group-id]

- Updated ActionHandler methods to handle both target types
- Updated help text and usage examples
- List command shows both UPS and group actions when no target specified
- Clear labeling in output distinguishes UPS actions from group actions

Example usage:
  nupst action list                 # Shows all UPS and group actions
  nupst action add dc-rack-1        # Adds action to group 'dc-rack-1'
  nupst action remove default 0     # Removes action from UPS 'default'

Groups can now have their own shutdown actions, allowing fine-grained
control over group behavior during power events.

deno.json

@@ -1,6 +1,6 @@
 {
   "name": "@serve.zone/nupst",
-  "version": "4.1.1",
+  "version": "4.3.1",
   "exports": "./mod.ts",
   "tasks": {
     "dev": "deno run --allow-all mod.ts",

example-action.sh

@@ -0,0 +1,122 @@
+#!/bin/bash
+# NUPST Action Script Example
+# Copy this to /etc/nupst/ and customize for your needs
+#
+# This script is called by NUPST when power events or threshold violations occur.
+# It receives UPS state information via environment variables and command-line arguments.
+
+# ==============================================================================
+# ARGUMENTS (positional parameters)
+# ==============================================================================
+# $1 = Power Status (online|onBattery|unknown)
+# $2 = Battery Capacity (percentage, 0-100)
+# $3 = Battery Runtime (estimated minutes remaining)
+
+POWER_STATUS=$1
+BATTERY_CAPACITY=$2
+BATTERY_RUNTIME=$3
+
+# ==============================================================================
+# ENVIRONMENT VARIABLES
+# ==============================================================================
+# NUPST_UPS_ID               - Unique UPS identifier
+# NUPST_UPS_NAME             - Human-readable UPS name
+# NUPST_POWER_STATUS         - Current power status
+# NUPST_BATTERY_CAPACITY     - Battery percentage (0-100)
+# NUPST_BATTERY_RUNTIME      - Estimated runtime in minutes
+# NUPST_THRESHOLDS_EXCEEDED  - "true" if below configured thresholds
+# NUPST_TRIGGER_REASON       - "powerStatusChange" or "thresholdViolation"
+# NUPST_BATTERY_THRESHOLD    - Configured battery threshold percentage
+# NUPST_RUNTIME_THRESHOLD    - Configured runtime threshold in minutes
+# NUPST_TIMESTAMP            - Unix timestamp (milliseconds since epoch)
+
+# ==============================================================================
+# EXAMPLE: Log the event
+# ==============================================================================
+LOG_FILE="/var/log/nupst-actions.log"
+
+echo "========================================" >> "$LOG_FILE"
+echo "NUPST Action Triggered: $(date)" >> "$LOG_FILE"
+echo "----------------------------------------" >> "$LOG_FILE"
+echo "UPS: $NUPST_UPS_NAME ($NUPST_UPS_ID)" >> "$LOG_FILE"
+echo "Power Status: $POWER_STATUS" >> "$LOG_FILE"
+echo "Battery: $BATTERY_CAPACITY%" >> "$LOG_FILE"
+echo "Runtime: $BATTERY_RUNTIME minutes" >> "$LOG_FILE"
+echo "Trigger Reason: $NUPST_TRIGGER_REASON" >> "$LOG_FILE"
+echo "Thresholds Exceeded: $NUPST_THRESHOLDS_EXCEEDED" >> "$LOG_FILE"
+echo "========================================" >> "$LOG_FILE"
+
+# ==============================================================================
+# EXAMPLE: Send email notification
+# ==============================================================================
+# if [ "$NUPST_TRIGGER_REASON" = "thresholdViolation" ]; then
+#   echo "ALERT: UPS $NUPST_UPS_NAME battery critical!" | \
+#     mail -s "UPS Battery Critical" admin@example.com
+# fi
+
+# ==============================================================================
+# EXAMPLE: Gracefully shutdown virtual machines
+# ==============================================================================
+# if [ "$NUPST_POWER_STATUS" = "onBattery" ] && [ "$NUPST_THRESHOLDS_EXCEEDED" = "true" ]; then
+#   echo "Shutting down VMs..." >> "$LOG_FILE"
+#   # virsh shutdown vm1
+#   # virsh shutdown vm2
+#   # Wait for VMs to shutdown
+#   # sleep 120
+# fi
+
+# ==============================================================================
+# EXAMPLE: Call external API/service
+# ==============================================================================
+# curl -X POST https://monitoring.example.com/ups-alert \
+#   -H "Content-Type: application/json" \
+#   -d "{
+#     \"upsId\": \"$NUPST_UPS_ID\",
+#     \"upsName\": \"$NUPST_UPS_NAME\",
+#     \"powerStatus\": \"$POWER_STATUS\",
+#     \"batteryCapacity\": $BATTERY_CAPACITY,
+#     \"batteryRuntime\": $BATTERY_RUNTIME,
+#     \"triggerReason\": \"$NUPST_TRIGGER_REASON\"
+#   }"
+
+# ==============================================================================
+# EXAMPLE: Remote shutdown via SSH with password
+# ==============================================================================
+# You can implement custom shutdown logic for remote systems
+# that require password authentication or webhooks
+#
+# if [ "$NUPST_THRESHOLDS_EXCEEDED" = "true" ]; then
+#   # Call a webhook with a secret password/token
+#   curl -X POST "https://remote-server.local/shutdown?token=YOUR_SECRET_TOKEN"
+#
+#   # Or use SSH with password (requires sshpass)
+#   # sshpass -p 'your-password' ssh user@remote-server 'sudo shutdown -h +5'
+# fi
+
+# ==============================================================================
+# EXAMPLE: Conditional logic based on battery level
+# ==============================================================================
+# if [ "$BATTERY_CAPACITY" -lt 20 ]; then
+#   echo "Battery critically low! Immediate action needed." >> "$LOG_FILE"
+# elif [ "$BATTERY_CAPACITY" -lt 50 ]; then
+#   echo "Battery low. Preparing for shutdown." >> "$LOG_FILE"
+# else
+#   echo "Battery acceptable. Monitoring." >> "$LOG_FILE"
+# fi
+
+# ==============================================================================
+# EXAMPLE: Different actions for different trigger reasons
+# ==============================================================================
+# case "$NUPST_TRIGGER_REASON" in
+#   powerStatusChange)
+#     echo "Power status changed to: $POWER_STATUS" >> "$LOG_FILE"
+#     # Send notification but don't take drastic action yet
+#     ;;
+#   thresholdViolation)
+#     echo "Thresholds violated! Taking emergency action." >> "$LOG_FILE"
+#     # Initiate graceful shutdowns, save data, etc.
+#     ;;
+# esac
+
+# Exit with success
+exit 0

ts/00_commitinfo_data.ts

@@ -6,5 +6,5 @@ import denoConfig from '../deno.json' with { type: 'json' };
 export const commitinfo = {
   name: denoConfig.name,
   version: denoConfig.version,
-  description: 'Deno-powered UPS monitoring tool for SNMP-enabled UPS devices',
+  description: 'Network UPS Shutdown Tool (https://nupst.serve.zone)',
 };

ts/actions/base-action.ts

@@ -0,0 +1,170 @@
+/**
+ * Base classes and interfaces for the NUPST action system
+ *
+ * Actions are triggered on:
+ * 1. Power status changes (online ↔ onBattery)
+ * 2. Threshold violations (battery/runtime cross below configured thresholds)
+ */
+
+export type TPowerStatus = 'online' | 'onBattery' | 'unknown';
+
+/**
+ * Context provided to actions when they execute
+ * Contains all relevant UPS state and trigger information
+ */
+export interface IActionContext {
+  // UPS identification
+  /** Unique ID of the UPS */
+  upsId: string;
+  /** Human-readable name of the UPS */
+  upsName: string;
+
+  // Current state
+  /** Current power status */
+  powerStatus: TPowerStatus;
+  /** Current battery capacity percentage (0-100) */
+  batteryCapacity: number;
+  /** Estimated battery runtime in minutes */
+  batteryRuntime: number;
+
+  // State tracking
+  /** Previous power status before this trigger */
+  previousPowerStatus: TPowerStatus;
+
+  // Metadata
+  /** Timestamp when this action was triggered (milliseconds since epoch) */
+  timestamp: number;
+  /** Reason this action was triggered */
+  triggerReason: 'powerStatusChange' | 'thresholdViolation';
+}
+
+/**
+ * Action trigger mode - determines when an action executes
+ */
+export type TActionTriggerMode =
+  | 'onlyPowerChanges' // Only on power status changes (online ↔ onBattery)
+  | 'onlyThresholds' // Only when action's thresholds are exceeded
+  | 'powerChangesAndThresholds' // On power changes OR threshold violations
+  | 'anyChange'; // On every UPS poll/check (every ~30s)
+
+/**
+ * Configuration for an action
+ */
+export interface IActionConfig {
+  /** Type of action to execute */
+  type: 'shutdown' | 'webhook' | 'script';
+
+  // Trigger configuration
+  /**
+   * When should this action be triggered?
+   * - onlyPowerChanges: Only on power status changes
+   * - onlyThresholds: Only when thresholds exceeded
+   * - powerChangesAndThresholds: On both (default)
+   * - anyChange: On every check
+   */
+  triggerMode?: TActionTriggerMode;
+
+  // Threshold configuration (applies to all action types)
+  /** Threshold settings for this action */
+  thresholds?: {
+    /** Battery percentage threshold (0-100) */
+    battery: number;
+    /** Runtime threshold in minutes */
+    runtime: number;
+  };
+
+  // Shutdown action configuration
+  /** Delay before shutdown in minutes (default: 5) */
+  shutdownDelay?: number;
+  /** Only execute shutdown on threshold violation, not power status changes */
+  onlyOnThresholdViolation?: boolean;
+
+  // Webhook action configuration
+  /** URL to call for webhook */
+  webhookUrl?: string;
+  /** HTTP method to use (default: POST) */
+  webhookMethod?: 'GET' | 'POST';
+  /** Timeout for webhook request in milliseconds (default: 10000) */
+  webhookTimeout?: number;
+  /** Only execute webhook on threshold violation */
+  webhookOnlyOnThresholdViolation?: boolean;
+
+  // Script action configuration
+  /** Path to script relative to /etc/nupst (e.g., "myaction.sh") */
+  scriptPath?: string;
+  /** Timeout for script execution in milliseconds (default: 60000) */
+  scriptTimeout?: number;
+  /** Only execute script on threshold violation */
+  scriptOnlyOnThresholdViolation?: boolean;
+}
+
+/**
+ * Abstract base class for all actions
+ * Each action type must extend this class and implement execute()
+ */
+export abstract class Action {
+  /** Type identifier for this action */
+  abstract readonly type: string;
+
+  /**
+   * Create a new action with the given configuration
+   * @param config Action configuration
+   */
+  constructor(protected config: IActionConfig) {}
+
+  /**
+   * Execute this action with the given context
+   * @param context Current UPS state and trigger information
+   */
+  abstract execute(context: IActionContext): Promise<void>;
+
+  /**
+   * Helper to check if this action should execute based on trigger mode
+   * @param context Action context with current UPS state
+   * @returns True if action should execute
+   */
+  protected shouldExecute(context: IActionContext): boolean {
+    const mode = this.config.triggerMode || 'powerChangesAndThresholds'; // Default
+
+    switch (mode) {
+      case 'onlyPowerChanges':
+        // Only execute on power status changes
+        return context.triggerReason === 'powerStatusChange';
+
+      case 'onlyThresholds':
+        // Only execute when this action's thresholds are exceeded
+        if (!this.config.thresholds) return false; // No thresholds = never execute
+        return this.areThresholdsExceeded(context.batteryCapacity, context.batteryRuntime);
+
+      case 'powerChangesAndThresholds':
+        // Execute on power changes OR when thresholds exceeded
+        if (context.triggerReason === 'powerStatusChange') return true;
+        if (!this.config.thresholds) return false;
+        return this.areThresholdsExceeded(context.batteryCapacity, context.batteryRuntime);
+
+      case 'anyChange':
+        // Execute on every trigger (power change or threshold check)
+        return true;
+
+      default:
+        return true;
+    }
+  }
+
+  /**
+   * Check if current battery/runtime exceeds this action's thresholds
+   * @param batteryCapacity Current battery percentage
+   * @param batteryRuntime Current runtime in minutes
+   * @returns True if thresholds are exceeded
+   */
+  protected areThresholdsExceeded(batteryCapacity: number, batteryRuntime: number): boolean {
+    if (!this.config.thresholds) {
+      return false; // No thresholds configured
+    }
+
+    return (
+      batteryCapacity < this.config.thresholds.battery ||
+      batteryRuntime < this.config.thresholds.runtime
+    );
+  }
+}

ts/actions/index.ts

@@ -0,0 +1,91 @@
+/**
+ * Action system exports and ActionManager
+ *
+ * This module provides the central coordination for the action system.
+ * The ActionManager is responsible for creating and executing actions.
+ */
+
+import { logger } from '../logger.ts';
+import type { Action, IActionConfig, IActionContext } from './base-action.ts';
+import { ShutdownAction } from './shutdown-action.ts';
+import { WebhookAction } from './webhook-action.ts';
+import { ScriptAction } from './script-action.ts';
+
+// Re-export types for convenience
+export type { IActionConfig, IActionContext, TPowerStatus } from './base-action.ts';
+export { Action } from './base-action.ts';
+export { ShutdownAction } from './shutdown-action.ts';
+export { WebhookAction } from './webhook-action.ts';
+export { ScriptAction } from './script-action.ts';
+
+/**
+ * ActionManager - Coordinates action creation and execution
+ *
+ * Provides factory methods for creating actions from configuration
+ * and orchestrates action execution with error handling.
+ */
+export class ActionManager {
+  /**
+   * Create an action instance from configuration
+   * @param config Action configuration
+   * @returns Instantiated action
+   * @throws Error if action type is unknown
+   */
+  static createAction(config: IActionConfig): Action {
+    switch (config.type) {
+      case 'shutdown':
+        return new ShutdownAction(config);
+      case 'webhook':
+        return new WebhookAction(config);
+      case 'script':
+        return new ScriptAction(config);
+      default:
+        throw new Error(`Unknown action type: ${(config as IActionConfig).type}`);
+    }
+  }
+
+  /**
+   * Execute a sequence of actions with the given context
+   * Each action runs sequentially, and failures are logged but don't stop the chain
+   * @param actions Array of action configurations to execute
+   * @param context Action context with UPS state
+   */
+  static async executeActions(
+    actions: IActionConfig[],
+    context: IActionContext,
+  ): Promise<void> {
+    if (!actions || actions.length === 0) {
+      return;
+    }
+
+    logger.log('');
+    logger.logBoxTitle(`Executing ${actions.length} Action(s)`, 60, 'info');
+    logger.logBoxLine(`Trigger: ${context.triggerReason}`);
+    logger.logBoxLine(`UPS: ${context.upsName} (${context.upsId})`);
+    logger.logBoxLine(`Power: ${context.powerStatus}`);
+    logger.logBoxLine(`Battery: ${context.batteryCapacity}% / ${context.batteryRuntime} min`);
+    logger.logBoxEnd();
+    logger.log('');
+
+    for (let i = 0; i < actions.length; i++) {
+      const actionConfig = actions[i];
+      try {
+        logger.info(`[${i + 1}/${actions.length}] ${actionConfig.type} action...`);
+
+        const action = this.createAction(actionConfig);
+        await action.execute(context);
+      } catch (error) {
+        logger.error(
+          `Action ${actionConfig.type} failed: ${
+            error instanceof Error ? error.message : String(error)
+          }`,
+        );
+        // Continue with next action despite failure
+      }
+    }
+
+    logger.log('');
+    logger.success('Action execution completed');
+    logger.log('');
+  }
+}

ts/actions/script-action.ts

@@ -0,0 +1,166 @@
+import * as path from 'node:path';
+import * as fs from 'node:fs';
+import { exec } from 'node:child_process';
+import { promisify } from 'node:util';
+import { Action, type IActionConfig, type IActionContext } from './base-action.ts';
+import { logger } from '../logger.ts';
+
+const execAsync = promisify(exec);
+
+/**
+ * ScriptAction - Executes a custom shell script from /etc/nupst/
+ *
+ * Runs user-provided scripts with UPS state passed as environment variables and arguments.
+ * Scripts must be .sh files located in /etc/nupst/ for security.
+ */
+export class ScriptAction extends Action {
+  readonly type = 'script';
+
+  private static readonly SCRIPT_DIR = '/etc/nupst';
+
+  /**
+   * Execute the script action
+   * @param context Action context with UPS state
+   */
+  async execute(context: IActionContext): Promise<void> {
+    // Check if we should execute based on trigger mode
+    if (!this.shouldExecute(context)) {
+      logger.info(`Script action skipped (trigger mode: ${this.config.triggerMode || 'powerChangesAndThresholds'})`);
+      return;
+    }
+
+    if (!this.config.scriptPath) {
+      logger.error('Script path not configured');
+      return;
+    }
+
+    // Validate and build script path
+    const scriptPath = this.validateAndBuildScriptPath(this.config.scriptPath);
+    if (!scriptPath) {
+      logger.error(`Invalid script path: ${this.config.scriptPath}`);
+      return;
+    }
+
+    // Check if script exists and is executable
+    if (!fs.existsSync(scriptPath)) {
+      logger.error(`Script not found: ${scriptPath}`);
+      return;
+    }
+
+    const timeout = this.config.scriptTimeout || 60000; // Default 60 seconds
+
+    logger.info(`Executing script: ${scriptPath}`);
+
+    try {
+      await this.executeScript(scriptPath, context, timeout);
+      logger.success('Script executed successfully');
+    } catch (error) {
+      logger.error(
+        `Script execution failed: ${error instanceof Error ? error.message : String(error)}`,
+      );
+      // Don't throw - script failures shouldn't stop other actions
+    }
+  }
+
+  /**
+   * Validate script path and build full path
+   * Ensures security by preventing path traversal and limiting to /etc/nupst
+   * @param scriptPath Relative script path from config
+   * @returns Full validated path or null if invalid
+   */
+  private validateAndBuildScriptPath(scriptPath: string): string | null {
+    // Remove any leading/trailing whitespace
+    scriptPath = scriptPath.trim();
+
+    // Reject paths with path traversal attempts
+    if (scriptPath.includes('..') || scriptPath.includes('/') || scriptPath.includes('\\')) {
+      logger.error('Script path must not contain directory separators or parent references');
+      return null;
+    }
+
+    // Require .sh extension
+    if (!scriptPath.endsWith('.sh')) {
+      logger.error('Script must have .sh extension');
+      return null;
+    }
+
+    // Build full path
+    return path.join(ScriptAction.SCRIPT_DIR, scriptPath);
+  }
+
+  /**
+   * Execute the script with UPS state as environment variables and arguments
+   * @param scriptPath Full path to the script
+   * @param context Action context
+   * @param timeout Execution timeout in milliseconds
+   */
+  private async executeScript(
+    scriptPath: string,
+    context: IActionContext,
+    timeout: number,
+  ): Promise<void> {
+    // Prepare environment variables
+    const env = {
+      ...process.env,
+      NUPST_UPS_ID: context.upsId,
+      NUPST_UPS_NAME: context.upsName,
+      NUPST_POWER_STATUS: context.powerStatus,
+      NUPST_BATTERY_CAPACITY: String(context.batteryCapacity),
+      NUPST_BATTERY_RUNTIME: String(context.batteryRuntime),
+      NUPST_TRIGGER_REASON: context.triggerReason,
+      NUPST_TIMESTAMP: String(context.timestamp),
+      // Include action's own thresholds if configured
+      NUPST_BATTERY_THRESHOLD: this.config.thresholds ? String(this.config.thresholds.battery) : '',
+      NUPST_RUNTIME_THRESHOLD: this.config.thresholds ? String(this.config.thresholds.runtime) : '',
+    };
+
+    // Build command with arguments
+    // Arguments: powerStatus batteryCapacity batteryRuntime
+    const args = [
+      context.powerStatus,
+      String(context.batteryCapacity),
+      String(context.batteryRuntime),
+    ].join(' ');
+
+    const command = `bash "${scriptPath}" ${args}`;
+
+    try {
+      const { stdout, stderr } = await execAsync(command, {
+        env,
+        cwd: ScriptAction.SCRIPT_DIR,
+        timeout,
+      });
+
+      // Log output
+      if (stdout) {
+        logger.log('Script stdout:');
+        logger.dim(stdout.trim());
+      }
+
+      if (stderr) {
+        logger.warn('Script stderr:');
+        logger.dim(stderr.trim());
+      }
+    } catch (error) {
+      // Check if it was a timeout
+      if (error instanceof Error && 'killed' in error && error.killed) {
+        throw new Error(`Script timed out after ${timeout}ms`);
+      }
+
+      // Include stdout/stderr in error if available
+      if (error && typeof error === 'object' && 'stdout' in error && 'stderr' in error) {
+        const execError = error as { stdout: string; stderr: string };
+        if (execError.stdout) {
+          logger.log('Script stdout:');
+          logger.dim(execError.stdout.trim());
+        }
+        if (execError.stderr) {
+          logger.warn('Script stderr:');
+          logger.dim(execError.stderr.trim());
+        }
+      }
+
+      throw error;
+    }
+  }
+}

ts/actions/shutdown-action.ts

@@ -0,0 +1,142 @@
+import * as fs from 'node:fs';
+import { execFile } from 'node:child_process';
+import { promisify } from 'node:util';
+import { Action, type IActionConfig, type IActionContext } from './base-action.ts';
+import { logger } from '../logger.ts';
+
+const execFileAsync = promisify(execFile);
+
+/**
+ * ShutdownAction - Initiates system shutdown
+ *
+ * This action triggers a system shutdown using the standard shutdown command.
+ * It includes a configurable delay to allow VMs and services to gracefully terminate.
+ */
+export class ShutdownAction extends Action {
+  readonly type = 'shutdown';
+
+  /**
+   * Execute the shutdown action
+   * @param context Action context with UPS state
+   */
+  async execute(context: IActionContext): Promise<void> {
+    // Check if we should execute based on trigger mode and thresholds
+    if (!this.shouldExecute(context)) {
+      logger.info(`Shutdown action skipped (trigger mode: ${this.config.triggerMode || 'powerChangesAndThresholds'})`);
+      return;
+    }
+
+    const shutdownDelay = this.config.shutdownDelay || 5; // Default 5 minutes
+
+    logger.log('');
+    logger.logBoxTitle('Initiating System Shutdown', 60, 'error');
+    logger.logBoxLine(`UPS: ${context.upsName} (${context.upsId})`);
+    logger.logBoxLine(`Power Status: ${context.powerStatus}`);
+    logger.logBoxLine(`Battery: ${context.batteryCapacity}%`);
+    logger.logBoxLine(`Runtime: ${context.batteryRuntime} minutes`);
+    logger.logBoxLine(`Trigger: ${context.triggerReason}`);
+    logger.logBoxLine(`Shutdown delay: ${shutdownDelay} minutes`);
+    logger.logBoxEnd();
+    logger.log('');
+
+    try {
+      await this.executeShutdownCommand(shutdownDelay);
+    } catch (error) {
+      logger.error(
+        `Shutdown command failed: ${error instanceof Error ? error.message : String(error)}`,
+      );
+      // Try alternative methods
+      await this.tryAlternativeShutdownMethods();
+    }
+  }
+
+  /**
+   * Execute the primary shutdown command
+   * @param delayMinutes Minutes to delay before shutdown
+   */
+  private async executeShutdownCommand(delayMinutes: number): Promise<void> {
+    // Find shutdown command in common system paths
+    const shutdownPaths = [
+      '/sbin/shutdown',
+      '/usr/sbin/shutdown',
+      '/bin/shutdown',
+      '/usr/bin/shutdown',
+    ];
+
+    let shutdownCmd = '';
+    for (const path of shutdownPaths) {
+      try {
+        if (fs.existsSync(path)) {
+          shutdownCmd = path;
+          logger.log(`Found shutdown command at: ${shutdownCmd}`);
+          break;
+        }
+      } catch (_e) {
+        // Continue checking other paths
+      }
+    }
+
+    if (shutdownCmd) {
+      // Execute shutdown command with delay to allow for VM graceful shutdown
+      const message = `UPS battery critical, shutting down in ${delayMinutes} minutes`;
+      logger.log(`Executing: ${shutdownCmd} -h +${delayMinutes} "${message}"`);
+
+      const { stdout } = await execFileAsync(shutdownCmd, [
+        '-h',
+        `+${delayMinutes}`,
+        message,
+      ]);
+
+      logger.log(`Shutdown initiated: ${stdout}`);
+      logger.log(`Allowing ${delayMinutes} minutes for VMs to shut down safely`);
+    } else {
+      throw new Error('Shutdown command not found in common paths');
+    }
+  }
+
+  /**
+   * Try alternative shutdown methods if primary command fails
+   */
+  private async tryAlternativeShutdownMethods(): Promise<void> {
+    logger.error('Trying alternative shutdown methods...');
+
+    const alternatives = [
+      { cmd: 'poweroff', args: ['--force'] },
+      { cmd: 'halt', args: ['-p'] },
+      { cmd: 'systemctl', args: ['poweroff'] },
+      { cmd: 'reboot', args: ['-p'] }, // Some systems allow reboot -p for power off
+    ];
+
+    for (const alt of alternatives) {
+      try {
+        // First check if command exists in common system paths
+        const paths = [
+          `/sbin/${alt.cmd}`,
+          `/usr/sbin/${alt.cmd}`,
+          `/bin/${alt.cmd}`,
+          `/usr/bin/${alt.cmd}`,
+        ];
+
+        let cmdPath = '';
+        for (const path of paths) {
+          if (fs.existsSync(path)) {
+            cmdPath = path;
+            break;
+          }
+        }
+
+        if (cmdPath) {
+          logger.log(`Trying alternative shutdown method: ${cmdPath} ${alt.args.join(' ')}`);
+          await execFileAsync(cmdPath, alt.args);
+          logger.log(`Alternative method ${alt.cmd} succeeded`);
+          return; // Exit if successful
+        }
+      } catch (_altError) {
+        logger.error(`Alternative method ${alt.cmd} failed`);
+        // Continue to next method
+      }
+    }
+
+    logger.error('All shutdown methods failed');
+  }
+}

ts/actions/webhook-action.ts

@@ -0,0 +1,141 @@
+import * as http from 'node:http';
+import * as https from 'node:https';
+import { URL } from 'node:url';
+import { Action, type IActionConfig, type IActionContext } from './base-action.ts';
+import { logger } from '../logger.ts';
+
+/**
+ * WebhookAction - Calls an HTTP webhook with UPS state information
+ *
+ * Sends UPS status to a configured webhook URL via GET or POST.
+ * This is useful for remote notifications and integrations with external systems.
+ */
+export class WebhookAction extends Action {
+  readonly type = 'webhook';
+
+  /**
+   * Execute the webhook action
+   * @param context Action context with UPS state
+   */
+  async execute(context: IActionContext): Promise<void> {
+    // Check if we should execute based on trigger mode
+    if (!this.shouldExecute(context)) {
+      logger.info(`Webhook action skipped (trigger mode: ${this.config.triggerMode || 'powerChangesAndThresholds'})`);
+      return;
+    }
+
+    if (!this.config.webhookUrl) {
+      logger.error('Webhook URL not configured');
+      return;
+    }
+
+    const method = this.config.webhookMethod || 'POST';
+    const timeout = this.config.webhookTimeout || 10000;
+
+    logger.info(`Calling webhook: ${method} ${this.config.webhookUrl}`);
+
+    try {
+      await this.callWebhook(context, method, timeout);
+      logger.success('Webhook call successful');
+    } catch (error) {
+      logger.error(
+        `Webhook call failed: ${error instanceof Error ? error.message : String(error)}`,
+      );
+      // Don't throw - webhook failures shouldn't stop other actions
+    }
+  }
+
+  /**
+   * Call the webhook with UPS state data
+   * @param context Action context
+   * @param method HTTP method (GET or POST)
+   * @param timeout Request timeout in milliseconds
+   */
+  private async callWebhook(
+    context: IActionContext,
+    method: 'GET' | 'POST',
+    timeout: number,
+  ): Promise<void> {
+    const payload: any = {
+      upsId: context.upsId,
+      upsName: context.upsName,
+      powerStatus: context.powerStatus,
+      batteryCapacity: context.batteryCapacity,
+      batteryRuntime: context.batteryRuntime,
+      triggerReason: context.triggerReason,
+      timestamp: context.timestamp,
+    };
+
+    // Include action's own thresholds if configured
+    if (this.config.thresholds) {
+      payload.thresholds = {
+        battery: this.config.thresholds.battery,
+        runtime: this.config.thresholds.runtime,
+      };
+    }
+
+    const url = new URL(this.config.webhookUrl!);
+
+    if (method === 'GET') {
+      // Append payload as query parameters for GET
+      url.searchParams.append('upsId', payload.upsId);
+      url.searchParams.append('upsName', payload.upsName);
+      url.searchParams.append('powerStatus', payload.powerStatus);
+      url.searchParams.append('batteryCapacity', String(payload.batteryCapacity));
+      url.searchParams.append('batteryRuntime', String(payload.batteryRuntime));
+      
+      url.searchParams.append('triggerReason', payload.triggerReason);
+      url.searchParams.append('timestamp', String(payload.timestamp));
+    }
+
+    return new Promise((resolve, reject) => {
+      const protocol = url.protocol === 'https:' ? https : http;
+
+      const options: http.RequestOptions = {
+        method,
+        headers: method === 'POST'
+          ? {
+            'Content-Type': 'application/json',
+            'User-Agent': 'nupst',
+          }
+          : {
+            'User-Agent': 'nupst',
+          },
+        timeout,
+      };
+
+      const req = protocol.request(url, options, (res) => {
+        let data = '';
+
+        res.on('data', (chunk) => {
+          data += chunk;
+        });
+
+        res.on('end', () => {
+          if (res.statusCode && res.statusCode >= 200 && res.statusCode < 300) {
+            logger.dim(`Webhook response (${res.statusCode}): ${data.substring(0, 100)}`);
+            resolve();
+          } else {
+            reject(new Error(`Webhook returned status ${res.statusCode}`));
+          }
+        });
+      });
+
+      req.on('error', (error) => {
+        reject(error);
+      });
+
+      req.on('timeout', () => {
+        req.destroy();
+        reject(new Error(`Webhook request timed out after ${timeout}ms`));
+      });
+
+      // Send POST data if applicable
+      if (method === 'POST') {
+        req.write(JSON.stringify(payload));
+      }
+
+      req.end();
+    });
+  }
+}

ts/cli.ts

@@ -1,6 +1,6 @@
 import { execSync } from 'node:child_process';
 import { Nupst } from './nupst.ts';
-import { logger } from './logger.ts';
+import { logger, type ITableColumn } from './logger.ts';
 import { theme, symbols } from './colors.ts';
 
 /**
@@ -72,6 +72,7 @@ export class NupstCli {
     const upsHandler = this.nupst.getUpsHandler();
     const groupHandler = this.nupst.getGroupHandler();
     const serviceHandler = this.nupst.getServiceHandler();
+    const actionHandler = this.nupst.getActionHandler();
 
     // Handle service subcommands
     if (command === 'service') {
@@ -193,6 +194,38 @@ export class NupstCli {
       return;
     }
 
+    // Handle action subcommands
+    if (command === 'action') {
+      const subcommand = commandArgs[0] || 'list';
+      const subcommandArgs = commandArgs.slice(1);
+
+      switch (subcommand) {
+        case 'add': {
+          const upsId = subcommandArgs[0];
+          await actionHandler.add(upsId);
+          break;
+        }
+        case 'remove':
+        case 'rm': // Alias
+        case 'delete': { // Backward compatibility
+          const upsId = subcommandArgs[0];
+          const actionIndex = subcommandArgs[1];
+          await actionHandler.remove(upsId, actionIndex);
+          break;
+        }
+        case 'list':
+        case 'ls': { // Alias
+          const upsId = subcommandArgs[0];
+          await actionHandler.list(upsId);
+          break;
+        }
+        default:
+          this.showActionHelp();
+          break;
+      }
+      return;
+    }
+
     // Handle config subcommand
     if (command === 'config') {
       const subcommand = commandArgs[0] || 'show';
@@ -303,154 +336,162 @@ export class NupstCli {
       try {
         await this.nupst.getDaemon().loadConfig();
       } catch (_error) {
-        const errorBoxWidth = 45;
+        logger.logBox('Configuration Error', [
-        logger.logBoxTitle('Configuration Error', errorBoxWidth);
+          'No configuration found.',
-        logger.logBoxLine('No configuration found.');
+          "Please run 'nupst ups add' first to create a configuration.",
-        logger.logBoxLine("Please run 'nupst setup' first to create a configuration.");
+        ], 50, 'error');
-        logger.logBoxEnd();
         return;
       }
 
       // Get current configuration
       const config = this.nupst.getDaemon().getConfig();
 
-      const boxWidth = 50;
-      logger.logBoxTitle('NUPST Configuration', boxWidth);
-
       // Check if multi-UPS config
       if (config.upsDevices && Array.isArray(config.upsDevices)) {
-        // Multi-UPS configuration
+        // === Multi-UPS Configuration ===
-        logger.logBoxLine(`UPS Devices: ${config.upsDevices.length}`);
-        logger.logBoxLine(`Groups: ${config.groups ? config.groups.length : 0}`);
-        logger.logBoxLine(`Check Interval: ${config.checkInterval / 1000} seconds`);
-        logger.logBoxLine('');
-        logger.logBoxLine('Configuration File Location:');
-        logger.logBoxLine('  /etc/nupst/config.json');
-        logger.logBoxEnd();
         
-        // Show UPS devices
+        // Overview Box
+        logger.log('');
+        logger.logBox('NUPST Configuration', [
+          `UPS Devices: ${theme.highlight(String(config.upsDevices.length))}`,
+          `Groups: ${theme.highlight(String(config.groups ? config.groups.length : 0))}`,
+          `Check Interval: ${theme.info(String(config.checkInterval / 1000))} seconds`,
+          '',
+          theme.dim('Configuration File:'),
+          `  ${theme.path('/etc/nupst/config.json')}`,
+        ], 60, 'info');
+
+        // UPS Devices Table
         if (config.upsDevices.length > 0) {
-          logger.logBoxTitle('UPS Devices', boxWidth);
+          const upsRows = config.upsDevices.map((ups) => ({
-          for (const ups of config.upsDevices) {
+            name: ups.name,
-            logger.logBoxLine(`${ups.name} (${ups.id}):`);
+            id: theme.dim(ups.id),
-            logger.logBoxLine(`  Host: ${ups.snmp.host}:${ups.snmp.port}`);
+            host: `${ups.snmp.host}:${ups.snmp.port}`,
-            logger.logBoxLine(`  Model: ${ups.snmp.upsModel}`);
+            model: ups.snmp.upsModel || 'cyberpower',
-            logger.logBoxLine(
+            actions: `${(ups.actions || []).length} configured`,
-              `  Thresholds: ${ups.thresholds.battery}% battery, ${ups.thresholds.runtime} min runtime`,
+            groups: ups.groups.length > 0 ? ups.groups.join(', ') : theme.dim('None'),
-            );
+          }));
-            logger.logBoxLine(
+
-              `  Groups: ${ups.groups.length > 0 ? ups.groups.join(', ') : 'None'}`,
+          const upsColumns: ITableColumn[] = [
-            );
+            { header: 'Name', key: 'name', align: 'left', color: theme.highlight },
-            logger.logBoxLine('');
+            { header: 'ID', key: 'id', align: 'left' },
-          }
+            { header: 'Host:Port', key: 'host', align: 'left', color: theme.info },
-          logger.logBoxEnd();
+            { header: 'Model', key: 'model', align: 'left' },
+            { header: 'Actions', key: 'actions', align: 'left' },
+            { header: 'Groups', key: 'groups', align: 'left' },
+          ];
+
+          logger.log('');
+          logger.info(`UPS Devices (${config.upsDevices.length}):`);
+          logger.log('');
+          logger.logTable(upsColumns, upsRows);
         }
 
-        // Show groups
+        // Groups Table
         if (config.groups && config.groups.length > 0) {
-          logger.logBoxTitle('UPS Groups', boxWidth);
+          const groupRows = config.groups.map((group) => {
-          for (const group of config.groups) {
-            logger.logBoxLine(`${group.name} (${group.id}):`);
-            logger.logBoxLine(`  Mode: ${group.mode}`);
-            if (group.description) {
-              logger.logBoxLine(`  Description: ${group.description}`);
-            }
-
-            // List UPS devices in this group
             const upsInGroup = config.upsDevices.filter((ups) =>
               ups.groups && ups.groups.includes(group.id)
             );
-            logger.logBoxLine(
+            return {
-              `  UPS Devices: ${
+              name: group.name,
-                upsInGroup.length > 0 ? upsInGroup.map((ups) => ups.name).join(', ') : 'None'
+              id: theme.dim(group.id),
-              }`,
+              mode: group.mode,
-            );
+              upsCount: String(upsInGroup.length),
-            logger.logBoxLine('');
+              ups: upsInGroup.length > 0 
-          }
+                ? upsInGroup.map((ups) => ups.name).join(', ') 
-          logger.logBoxEnd();
+                : theme.dim('None'),
+              description: group.description || theme.dim('—'),
+            };
+          });
+
+          const groupColumns: ITableColumn[] = [
+            { header: 'Name', key: 'name', align: 'left', color: theme.highlight },
+            { header: 'ID', key: 'id', align: 'left' },
+            { header: 'Mode', key: 'mode', align: 'left', color: theme.info },
+            { header: 'UPS', key: 'upsCount', align: 'right' },
+            { header: 'UPS Devices', key: 'ups', align: 'left' },
+            { header: 'Description', key: 'description', align: 'left' },
+          ];
+
+          logger.log('');
+          logger.info(`UPS Groups (${config.groups.length}):`);
+          logger.log('');
+          logger.logTable(groupColumns, groupRows);
         }
       } else {
-        // Legacy single UPS configuration
+        // === Legacy Single UPS Configuration ===
+        
         if (!config.snmp) {
-          logger.logBoxLine('Error: Legacy configuration missing SNMP settings');
+          logger.logBox('Configuration Error', [
-        } else {
+            'Error: Legacy configuration missing SNMP settings',
-          // SNMP Settings
+          ], 60, 'error');
-          logger.logBoxLine('SNMP Settings:');
+          return;
-          logger.logBoxLine(`  Host: ${config.snmp.host}`);
-          logger.logBoxLine(`  Port: ${config.snmp.port}`);
-          logger.logBoxLine(`  Version: ${config.snmp.version}`);
-          logger.logBoxLine(`  UPS Model: ${config.snmp.upsModel || 'cyberpower'}`);
-
-          if (config.snmp.version === 1 || config.snmp.version === 2) {
-            logger.logBoxLine(`  Community: ${config.snmp.community}`);
-          } else if (config.snmp.version === 3) {
-            logger.logBoxLine(`  Security Level: ${config.snmp.securityLevel}`);
-            logger.logBoxLine(`  Username: ${config.snmp.username}`);
-
-            // Show auth and privacy details based on security level
-            if (
-              config.snmp.securityLevel === 'authNoPriv' ||
-              config.snmp.securityLevel === 'authPriv'
-            ) {
-              logger.logBoxLine(`  Auth Protocol: ${config.snmp.authProtocol || 'None'}`);
-            }
-
-            if (config.snmp.securityLevel === 'authPriv') {
-              logger.logBoxLine(`  Privacy Protocol: ${config.snmp.privProtocol || 'None'}`);
-            }
-
-            // Show timeout value
-            logger.logBoxLine(`  Timeout: ${config.snmp.timeout / 1000} seconds`);
-          }
-
-          // Show OIDs if custom model is selected
-          if (config.snmp.upsModel === 'custom' && config.snmp.customOIDs) {
-            logger.logBoxLine('Custom OIDs:');
-            logger.logBoxLine(
-              `  Power Status: ${config.snmp.customOIDs.POWER_STATUS || 'Not set'}`,
-            );
-            logger.logBoxLine(
-              `  Battery Capacity: ${config.snmp.customOIDs.BATTERY_CAPACITY || 'Not set'}`,
-            );
-            logger.logBoxLine(
-              `  Battery Runtime: ${config.snmp.customOIDs.BATTERY_RUNTIME || 'Not set'}`,
-            );
-          }
         }
 
-        // Thresholds
+        logger.log('');
-        if (!config.thresholds) {
+        logger.logBox('NUPST Configuration (Legacy)', [
-          logger.logBoxLine('Error: Legacy configuration missing threshold settings');
+          theme.warning('Legacy single-UPS configuration format'),
-        } else {
+          '',
-          logger.logBoxLine('Thresholds:');
+          theme.dim('SNMP Settings:'),
-          logger.logBoxLine(`  Battery: ${config.thresholds.battery}%`);
+          `  Host: ${theme.info(config.snmp.host)}`,
-          logger.logBoxLine(`  Runtime: ${config.thresholds.runtime} minutes`);
+          `  Port: ${theme.info(String(config.snmp.port))}`,
-        }
+          `  Version: ${config.snmp.version}`,
-        logger.logBoxLine(`Check Interval: ${config.checkInterval / 1000} seconds`);
+          `  UPS Model: ${config.snmp.upsModel || 'cyberpower'}`,
+          ...(config.snmp.version === 1 || config.snmp.version === 2 
+            ? [`  Community: ${config.snmp.community}`]
+            : []
+          ),
+          ...(config.snmp.version === 3 
+            ? [
+                `  Security Level: ${config.snmp.securityLevel}`,
+                `  Username: ${config.snmp.username}`,
+                ...(config.snmp.securityLevel === 'authNoPriv' || config.snmp.securityLevel === 'authPriv'
+                  ? [`  Auth Protocol: ${config.snmp.authProtocol || 'None'}`]
+                  : []
+                ),
+                ...(config.snmp.securityLevel === 'authPriv'
+                  ? [`  Privacy Protocol: ${config.snmp.privProtocol || 'None'}`]
+                  : []
+                ),
+                `  Timeout: ${config.snmp.timeout / 1000} seconds`,
+              ]
+            : []
+          ),
+          ...(config.snmp.upsModel === 'custom' && config.snmp.customOIDs
+            ? [
+                theme.dim('Custom OIDs:'),
+                `  Power Status: ${config.snmp.customOIDs.POWER_STATUS || 'Not set'}`,
+                `  Battery Capacity: ${config.snmp.customOIDs.BATTERY_CAPACITY || 'Not set'}`,
+                `  Battery Runtime: ${config.snmp.customOIDs.BATTERY_RUNTIME || 'Not set'}`,
+              ]
+            : []
+          ),
+          '',
           
-        // Configuration file location
+          `  Check Interval: ${config.checkInterval / 1000} seconds`,
-        logger.logBoxLine('');
+          '',
-        logger.logBoxLine('Configuration File Location:');
+          theme.dim('Configuration File:'),
-        logger.logBoxLine('  /etc/nupst/config.json');
+          `  ${theme.path('/etc/nupst/config.json')}`,
-        logger.logBoxLine('');
+          '',
-        logger.logBoxLine('Note: Using legacy single-UPS configuration format.');
+          theme.warning('Note: Using legacy single-UPS configuration format.'),
-        logger.logBoxLine('Consider using "nupst add" to migrate to multi-UPS format.');
+          `Consider using ${theme.command('nupst ups add')} to migrate to multi-UPS format.`,
-
+        ], 70, 'warning');
-        logger.logBoxEnd();
       }
 
-      // Show service status
+      // Service Status
       try {
         const isActive =
           execSync('systemctl is-active nupst.service || true').toString().trim() === 'active';
         const isEnabled =
           execSync('systemctl is-enabled nupst.service || true').toString().trim() === 'enabled';
 
-        const statusBoxWidth = 45;
+        logger.log('');
-        logger.logBoxTitle('Service Status', statusBoxWidth);
+        logger.logBox('Service Status', [
-        logger.logBoxLine(`Service Active: ${isActive ? 'Yes' : 'No'}`);
+          `Active: ${isActive ? theme.success('Yes') : theme.dim('No')}`,
-        logger.logBoxLine(`Service Enabled: ${isEnabled ? 'Yes' : 'No'}`);
+          `Enabled: ${isEnabled ? theme.success('Yes') : theme.dim('No')}`,
-        logger.logBoxEnd();
+        ], 50, isActive ? 'success' : 'default');
+        logger.log('');
       } catch (_error) {
         // Ignore errors checking service status
       }
@@ -469,7 +510,7 @@ export class NupstCli {
   private showVersion(): void {
     const version = this.nupst.getVersion();
     logger.log(`NUPST version ${version}`);
-    logger.log('Deno-powered UPS monitoring tool');
+    logger.log('Network UPS Shutdown Tool (https://nupst.serve.zone)');
   }
 
   /**
@@ -491,6 +532,7 @@ export class NupstCli {
     this.printCommand('service <subcommand>', 'Manage systemd service');
     this.printCommand('ups <subcommand>', 'Manage UPS devices');
     this.printCommand('group <subcommand>', 'Manage UPS groups');
+    this.printCommand('action <subcommand>', 'Manage UPS actions');
     this.printCommand('config [show]', 'Display current configuration');
     this.printCommand('update', 'Update NUPST from repository', theme.dim('(requires root)'));
     this.printCommand('uninstall', 'Completely remove NUPST', theme.dim('(requires root)'));
@@ -527,6 +569,13 @@ export class NupstCli {
     this.printCommand('nupst group list (or ls)', 'List all UPS groups');
     console.log('');
 
+    // Action subcommands
+    logger.log(theme.info('Action Subcommands:'));
+    this.printCommand('nupst action add <target-id>', 'Add a new action to a UPS or group');
+    this.printCommand('nupst action remove <target-id> <index>', 'Remove an action by index');
+    this.printCommand('nupst action list [target-id]', 'List all actions (optionally for specific target)');
+    console.log('');
+
     // Options
     logger.log(theme.info('Options:'));
     this.printCommand('--debug, -d', 'Enable debug mode for detailed SNMP logging');
@@ -631,6 +680,30 @@ Examples:
   nupst group add         - Create a new group
   nupst group edit dc-1   - Edit group with ID 'dc-1'
   nupst group remove dc-1 - Remove group with ID 'dc-1'
+`);
+  }
+
+  private showActionHelp(): void {
+    logger.log(`
+NUPST - Action Management Commands
+
+Usage:
+  nupst action <subcommand> [arguments]
+
+Subcommands:
+  add <ups-id|group-id>                   - Add a new action to a UPS or group interactively
+  remove <ups-id|group-id> <index>        - Remove an action by index (alias: rm, delete)
+  list [ups-id|group-id]                  - List all actions (optionally for specific target) (alias: ls)
+
+Options:
+  --debug, -d                             - Enable debug mode for detailed logging
+
+Examples:
+  nupst action list                       - List actions for all UPS devices and groups
+  nupst action list default               - List actions for UPS or group with ID 'default'
+  nupst action add default                - Add a new action to UPS or group 'default'
+  nupst action remove default 0           - Remove action at index 0 from UPS or group 'default'
+  nupst action add dc-rack-1              - Add a new action to group 'dc-rack-1'
 `);
   }
 }

ts/cli/action-handler.ts

@@ -0,0 +1,363 @@
+import process from 'node:process';
+import { Nupst } from '../nupst.ts';
+import { logger, type ITableColumn } from '../logger.ts';
+import { theme, symbols } from '../colors.ts';
+import type { IActionConfig } from '../actions/base-action.ts';
+import type { IUpsConfig, IGroupConfig } from '../daemon.ts';
+
+/**
+ * Class for handling action-related CLI commands
+ * Provides interface for managing UPS actions
+ */
+export class ActionHandler {
+  private readonly nupst: Nupst;
+
+  /**
+   * Create a new action handler
+   * @param nupst Reference to the main Nupst instance
+   */
+  constructor(nupst: Nupst) {
+    this.nupst = nupst;
+  }
+
+  /**
+   * Add a new action to a UPS or group
+   */
+  public async add(targetId?: string): Promise<void> {
+    try {
+      if (!targetId) {
+        logger.error('Target ID is required');
+        logger.log(
+          `  ${theme.dim('Usage:')} ${theme.command('nupst action add <ups-id|group-id>')}`,
+        );
+        logger.log('');
+        logger.log(`  ${theme.dim('List UPS devices:')} ${theme.command('nupst ups list')}`);
+        logger.log(`  ${theme.dim('List groups:')} ${theme.command('nupst group list')}`);
+        logger.log('');
+        process.exit(1);
+      }
+
+      const config = await this.nupst.getDaemon().loadConfig();
+
+      // Check if it's a UPS
+      const ups = config.upsDevices.find((u) => u.id === targetId);
+      // Check if it's a group
+      const group = config.groups?.find((g) => g.id === targetId);
+
+      if (!ups && !group) {
+        logger.error(`UPS or Group with ID '${targetId}' not found`);
+        logger.log('');
+        logger.log(`  ${theme.dim('List available UPS devices:')} ${theme.command('nupst ups list')}`);
+        logger.log(`  ${theme.dim('List available groups:')} ${theme.command('nupst group list')}`);
+        logger.log('');
+        process.exit(1);
+      }
+
+      const target = ups || group;
+      const targetType = ups ? 'UPS' : 'Group';
+      const targetName = ups ? ups.name : group!.name;
+
+      const readline = await import('node:readline');
+      const rl = readline.createInterface({
+        input: process.stdin,
+        output: process.stdout,
+      });
+
+      const prompt = (question: string): Promise<string> => {
+        return new Promise((resolve) => {
+          rl.question(question, (answer: string) => {
+            resolve(answer);
+          });
+        });
+      };
+
+      try {
+        logger.log('');
+        logger.info(`Add Action to ${targetType} ${theme.highlight(targetName)}`);
+        logger.log('');
+
+        // Action type (currently only shutdown is supported)
+        const type = 'shutdown';
+        logger.log(`  ${theme.dim('Action type:')} ${theme.highlight('shutdown')}`);
+
+        // Battery threshold
+        const batteryStr = await prompt(
+          `  ${theme.dim('Battery threshold')} ${theme.dim('(%):')} `,
+        );
+        const battery = parseInt(batteryStr, 10);
+        if (isNaN(battery) || battery < 0 || battery > 100) {
+          logger.error('Invalid battery threshold. Must be 0-100.');
+          process.exit(1);
+        }
+
+        // Runtime threshold
+        const runtimeStr = await prompt(
+          `  ${theme.dim('Runtime threshold')} ${theme.dim('(minutes):')} `,
+        );
+        const runtime = parseInt(runtimeStr, 10);
+        if (isNaN(runtime) || runtime < 0) {
+          logger.error('Invalid runtime threshold. Must be >= 0.');
+          process.exit(1);
+        }
+
+        // Trigger mode
+        logger.log('');
+        logger.log(`  ${theme.dim('Trigger mode:')}`);
+        logger.log(`    ${theme.dim('1)')} onlyPowerChanges - Trigger only when power status changes`);
+        logger.log(
+          `    ${theme.dim('2)')} onlyThresholds - Trigger only when thresholds are violated`,
+        );
+        logger.log(
+          `    ${theme.dim('3)')} powerChangesAndThresholds - Trigger on power change AND thresholds`,
+        );
+        logger.log(`    ${theme.dim('4)')} anyChange - Trigger on any status change`);
+        const triggerChoice = await prompt(`  ${theme.dim('Choice')} ${theme.dim('[2]:')} `);
+        const triggerModeMap: Record<string, string> = {
+          '1': 'onlyPowerChanges',
+          '2': 'onlyThresholds',
+          '3': 'powerChangesAndThresholds',
+          '4': 'anyChange',
+          '': 'onlyThresholds', // Default
+        };
+        const triggerMode = triggerModeMap[triggerChoice] || 'onlyThresholds';
+
+        // Shutdown delay
+        const delayStr = await prompt(
+          `  ${theme.dim('Shutdown delay')} ${theme.dim('(seconds) [5]:')} `,
+        );
+        const shutdownDelay = delayStr ? parseInt(delayStr, 10) : 5;
+        if (isNaN(shutdownDelay) || shutdownDelay < 0) {
+          logger.error('Invalid shutdown delay. Must be >= 0.');
+          process.exit(1);
+        }
+
+        // Create the action
+        const newAction: IActionConfig = {
+          type,
+          thresholds: {
+            battery,
+            runtime,
+          },
+          triggerMode: triggerMode as IActionConfig['triggerMode'],
+          shutdownDelay,
+        };
+
+        // Add to target (UPS or group)
+        if (!target!.actions) {
+          target!.actions = [];
+        }
+        target!.actions.push(newAction);
+
+        await this.nupst.getDaemon().saveConfig(config);
+
+        logger.log('');
+        logger.success(`Action added to ${targetType} ${targetName}`);
+        logger.log('');
+        logger.log(
+          `  ${theme.dim('Restart service to apply changes:')} ${theme.command('nupst service restart')}`,
+        );
+        logger.log('');
+      } finally {
+        rl.close();
+      }
+    } catch (error) {
+      logger.error(
+        `Failed to add action: ${error instanceof Error ? error.message : String(error)}`,
+      );
+      process.exit(1);
+    }
+  }
+
+  /**
+   * Remove an action from a UPS or group
+   */
+  public async remove(targetId?: string, actionIndexStr?: string): Promise<void> {
+    try {
+      if (!targetId || !actionIndexStr) {
+        logger.error('Target ID and action index are required');
+        logger.log(
+          `  ${theme.dim('Usage:')} ${theme.command('nupst action remove <ups-id|group-id> <action-index>')}`,
+        );
+        logger.log('');
+        logger.log(`  ${theme.dim('List actions:')} ${theme.command('nupst action list')}`);
+        logger.log('');
+        process.exit(1);
+      }
+
+      const actionIndex = parseInt(actionIndexStr, 10);
+      if (isNaN(actionIndex) || actionIndex < 0) {
+        logger.error('Invalid action index. Must be >= 0.');
+        process.exit(1);
+      }
+
+      const config = await this.nupst.getDaemon().loadConfig();
+
+      // Check if it's a UPS
+      const ups = config.upsDevices.find((u) => u.id === targetId);
+      // Check if it's a group
+      const group = config.groups?.find((g) => g.id === targetId);
+
+      if (!ups && !group) {
+        logger.error(`UPS or Group with ID '${targetId}' not found`);
+        logger.log('');
+        logger.log(`  ${theme.dim('List available UPS devices:')} ${theme.command('nupst ups list')}`);
+        logger.log(`  ${theme.dim('List available groups:')} ${theme.command('nupst group list')}`);
+        logger.log('');
+        process.exit(1);
+      }
+
+      const target = ups || group;
+      const targetType = ups ? 'UPS' : 'Group';
+      const targetName = ups ? ups.name : group!.name;
+
+      if (!target!.actions || target!.actions.length === 0) {
+        logger.error(`No actions configured for ${targetType} '${targetName}'`);
+        logger.log('');
+        process.exit(1);
+      }
+
+      if (actionIndex >= target!.actions.length) {
+        logger.error(
+          `Invalid action index. ${targetType} '${targetName}' has ${target!.actions.length} action(s) (index 0-${target!.actions.length - 1})`,
+        );
+        logger.log('');
+        logger.log(
+          `  ${theme.dim('List actions:')} ${theme.command(`nupst action list ${targetId}`)}`,
+        );
+        logger.log('');
+        process.exit(1);
+      }
+
+      const removedAction = target!.actions[actionIndex];
+      target!.actions.splice(actionIndex, 1);
+
+      await this.nupst.getDaemon().saveConfig(config);
+
+      logger.log('');
+      logger.success(`Action removed from ${targetType} ${targetName}`);
+      logger.log(`  ${theme.dim('Type:')} ${removedAction.type}`);
+      if (removedAction.thresholds) {
+        logger.log(
+          `  ${theme.dim('Thresholds:')} Battery: ${removedAction.thresholds.battery}%, Runtime: ${removedAction.thresholds.runtime}min`,
+        );
+      }
+      logger.log('');
+      logger.log(
+        `  ${theme.dim('Restart service to apply changes:')} ${theme.command('nupst service restart')}`,
+      );
+      logger.log('');
+    } catch (error) {
+      logger.error(
+        `Failed to remove action: ${error instanceof Error ? error.message : String(error)}`,
+      );
+      process.exit(1);
+    }
+  }
+
+  /**
+   * List all actions for a specific UPS/group or all devices
+   */
+  public async list(targetId?: string): Promise<void> {
+    try {
+      const config = await this.nupst.getDaemon().loadConfig();
+
+      if (targetId) {
+        // List actions for specific UPS or group
+        const ups = config.upsDevices.find((u) => u.id === targetId);
+        const group = config.groups?.find((g) => g.id === targetId);
+
+        if (!ups && !group) {
+          logger.error(`UPS or Group with ID '${targetId}' not found`);
+          logger.log('');
+          logger.log(`  ${theme.dim('List available UPS devices:')} ${theme.command('nupst ups list')}`);
+          logger.log(`  ${theme.dim('List available groups:')} ${theme.command('nupst group list')}`);
+          logger.log('');
+          process.exit(1);
+        }
+
+        if (ups) {
+          this.displayTargetActions(ups, 'UPS');
+        } else {
+          this.displayTargetActions(group!, 'Group');
+        }
+      } else {
+        // List actions for all UPS devices and groups
+        logger.log('');
+        logger.info('Actions for All UPS Devices and Groups');
+        logger.log('');
+
+        let hasAnyActions = false;
+
+        // Display UPS actions
+        for (const ups of config.upsDevices) {
+          if (ups.actions && ups.actions.length > 0) {
+            hasAnyActions = true;
+            this.displayTargetActions(ups, 'UPS');
+          }
+        }
+
+        // Display Group actions
+        for (const group of config.groups || []) {
+          if (group.actions && group.actions.length > 0) {
+            hasAnyActions = true;
+            this.displayTargetActions(group, 'Group');
+          }
+        }
+
+        if (!hasAnyActions) {
+          logger.log(`  ${theme.dim('No actions configured')}`);
+          logger.log('');
+          logger.log(
+            `  ${theme.dim('Add an action:')} ${theme.command('nupst action add <ups-id|group-id>')}`,
+          );
+          logger.log('');
+        }
+      }
+    } catch (error) {
+      logger.error(
+        `Failed to list actions: ${error instanceof Error ? error.message : String(error)}`,
+      );
+      process.exit(1);
+    }
+  }
+
+  /**
+   * Display actions for a single UPS or Group
+   */
+  private displayTargetActions(
+    target: IUpsConfig | IGroupConfig,
+    targetType: 'UPS' | 'Group',
+  ): void {
+    logger.log(
+      `${symbols.info} ${targetType} ${theme.highlight(target.name)} ${theme.dim(`(${target.id})`)}`,
+    );
+    logger.log('');
+
+    if (!target.actions || target.actions.length === 0) {
+      logger.log(`  ${theme.dim('No actions configured')}`);
+      logger.log('');
+      return;
+    }
+
+    const columns: ITableColumn[] = [
+      { header: 'Index', key: 'index', align: 'right' },
+      { header: 'Type', key: 'type', align: 'left' },
+      { header: 'Battery', key: 'battery', align: 'right' },
+      { header: 'Runtime', key: 'runtime', align: 'right' },
+      { header: 'Trigger Mode', key: 'triggerMode', align: 'left' },
+      { header: 'Delay', key: 'delay', align: 'right' },
+    ];
+
+    const rows = target.actions.map((action, index) => ({
+      index: theme.dim(index.toString()),
+      type: theme.highlight(action.type),
+      battery: action.thresholds ? `${action.thresholds.battery}%` : theme.dim('N/A'),
+      runtime: action.thresholds ? `${action.thresholds.runtime}min` : theme.dim('N/A'),
+      triggerMode: theme.dim(action.triggerMode || 'onlyThresholds'),
+      delay: `${action.shutdownDelay || 5}s`,
+    }));
+
+    logger.logTable(columns, rows);
+    logger.log('');
+  }
+}

ts/cli/group-handler.ts

@@ -1,6 +1,7 @@
 import process from 'node:process';
 import { Nupst } from '../nupst.ts';
-import { logger } from '../logger.ts';
+import { logger, type ITableColumn } from '../logger.ts';
+import { theme } from '../colors.ts';
 import * as helpers from '../helpers/index.ts';
 import { type IGroupConfig } from '../daemon.ts';
 
@@ -28,11 +29,10 @@ export class GroupHandler {
       try {
         await this.nupst.getDaemon().loadConfig();
       } catch (error) {
-        const errorBoxWidth = 45;
+        logger.logBox('Configuration Error', [
-        logger.logBoxTitle('Configuration Error', errorBoxWidth);
+          'No configuration found.',
-        logger.logBoxLine('No configuration found.');
+          "Please run 'nupst ups add' first to create a configuration.",
-        logger.logBoxLine("Please run 'nupst setup' first to create a configuration.");
+        ], 50, 'error');
-        logger.logBoxEnd();
         return;
       }
 
@@ -41,43 +41,53 @@ export class GroupHandler {
 
       // Check if multi-UPS config
       if (!config.groups || !Array.isArray(config.groups)) {
-        // Legacy or missing groups configuration
+        logger.logBox('UPS Groups', [
-        const boxWidth = 45;
+          'No groups configured.',
-        logger.logBoxTitle('UPS Groups', boxWidth);
+          '',
-        logger.logBoxLine('No groups configured.');
+          `${theme.dim('Run')} ${theme.command('nupst group add')} ${theme.dim('to add a group')}`,
-        logger.logBoxLine('Use "nupst group add" to add a UPS group.');
+        ], 50, 'info');
-        logger.logBoxEnd();
         return;
       }
 
-      // Display group list
+      // Display group list with modern table
-      const boxWidth = 60;
-      logger.logBoxTitle('UPS Groups', boxWidth);
-
       if (config.groups.length === 0) {
-        logger.logBoxLine('No UPS groups configured.');
+        logger.logBox('UPS Groups', [
-        logger.logBoxLine('Use "nupst group add" to add a UPS group.');
+          'No UPS groups configured.',
-      } else {
+          '',
-        logger.logBoxLine(`Found ${config.groups.length} group(s)`);
+          `${theme.dim('Run')} ${theme.command('nupst group add')} ${theme.dim('to add a group')}`,
-        logger.logBoxLine('');
+        ], 60, 'info');
-        logger.logBoxLine('ID         | Name                 | Mode         | UPS Devices');
+        return;
-        logger.logBoxLine('-----------+----------------------+--------------+----------------');
-
-        for (const group of config.groups) {
-          const id = group.id.padEnd(10, ' ').substring(0, 10);
-          const name = (group.name || '').padEnd(20, ' ').substring(0, 20);
-          const mode = (group.mode || 'unknown').padEnd(12, ' ').substring(0, 12);
-
-          // Count UPS devices in this group
-          const upsInGroup = config.upsDevices.filter((ups) => ups.groups.includes(group.id));
-          const upsCount = upsInGroup.length;
-          const upsNames = upsInGroup.map((ups) => ups.name).join(', ');
-
-          logger.logBoxLine(`${id} | ${name} | ${mode} | ${upsCount > 0 ? upsNames : 'None'}`);
-        }
       }
 
-      logger.logBoxEnd();
+      // Prepare table data
+      const rows = config.groups.map((group) => {
+        // Count UPS devices in this group
+        const upsInGroup = config.upsDevices.filter((ups) => ups.groups.includes(group.id));
+        const upsCount = upsInGroup.length;
+        const upsNames = upsInGroup.map((ups) => ups.name).join(', ');
+
+        return {
+          id: group.id,
+          name: group.name || '',
+          mode: group.mode || 'unknown',
+          count: String(upsCount),
+          devices: upsCount > 0 ? upsNames : theme.dim('None'),
+        };
+      });
+
+      const columns: ITableColumn[] = [
+        { header: 'ID', key: 'id', align: 'left', color: theme.highlight },
+        { header: 'Name', key: 'name', align: 'left' },
+        { header: 'Mode', key: 'mode', align: 'left', color: theme.info },
+        { header: 'UPS Count', key: 'count', align: 'right' },
+        { header: 'UPS Devices', key: 'devices', align: 'left' },
+      ];
+
+      logger.log('');
+      logger.info(`UPS Groups (${config.groups.length}):`);
+      logger.log('');
+      logger.logTable(columns, rows);
+      logger.log('');
     } catch (error) {
       logger.error(
         `Failed to list UPS groups: ${error instanceof Error ? error.message : String(error)}`,
@@ -192,6 +202,7 @@ export class GroupHandler {
         logger.log('\nGroup setup complete!');
       } finally {
         rl.close();
+        process.stdin.destroy();
       }
     } catch (error) {
       logger.error(`Add group error: ${error instanceof Error ? error.message : String(error)}`);
@@ -309,6 +320,7 @@ export class GroupHandler {
         logger.log('\nGroup edit complete!');
       } finally {
         rl.close();
+        process.stdin.destroy();
       }
     } catch (error) {
       logger.error(`Edit group error: ${error instanceof Error ? error.message : String(error)}`);
@@ -366,6 +378,7 @@ export class GroupHandler {
       });
 
       rl.close();
+      process.stdin.destroy();
 
       if (confirm !== 'y' && confirm !== 'yes') {
         logger.log('Deletion cancelled.');

ts/cli/service-handler.ts

@@ -213,9 +213,11 @@ export class ServiceHandler {
         });
       };
 
-      console.log('\nNUPST Uninstaller');
+      logger.log('');
-      console.log('===============');
+      logger.highlight('NUPST Uninstaller');
-      console.log('This will completely remove NUPST from your system.\n');
+      logger.dim('===============');
+      logger.log('This will completely remove NUPST from your system.');
+      logger.log('');
 
       // Ask about removing configuration
       const removeConfig = await prompt(
@@ -251,17 +253,20 @@ export class ServiceHandler {
         }
 
         if (!uninstallScriptPath) {
-          console.error('Could not locate uninstall.sh script. Aborting uninstall.');
+          logger.error('Could not locate uninstall.sh script. Aborting uninstall.');
           rl.close();
+          process.stdin.destroy();
           process.exit(1);
         }
       }
 
       // Close readline before executing script
       rl.close();
+      process.stdin.destroy();
 
       // Execute uninstall.sh with the appropriate option
-      console.log(`\nRunning uninstaller from ${uninstallScriptPath}...`);
+      logger.log('');
+      logger.log(`Running uninstaller from ${uninstallScriptPath}...`);
 
       // Pass the configuration removal option as an environment variable
       const env = {
@@ -277,7 +282,7 @@ export class ServiceHandler {
         stdio: 'inherit', // Show output in the terminal
       });
     } catch (error) {
-      console.error(`Uninstall failed: ${error instanceof Error ? error.message : String(error)}`);
+      logger.error(`Uninstall failed: ${error instanceof Error ? error.message : String(error)}`);
       process.exit(1);
     }
   }

ts/cli/ups-handler.ts

@@ -1,7 +1,8 @@
 import process from 'node:process';
 import { execSync } from 'node:child_process';
 import { Nupst } from '../nupst.ts';
-import { logger } from '../logger.ts';
+import { logger, type ITableColumn } from '../logger.ts';
+import { theme } from '../colors.ts';
 import * as helpers from '../helpers/index.ts';
 import type { TUpsModel } from '../snmp/types.ts';
 import type { INupstConfig } from '../daemon.ts';
@@ -47,6 +48,7 @@ export class UpsHandler {
         await this.runAddProcess(prompt);
       } finally {
         rl.close();
+        process.stdin.destroy();
       }
     } catch (error) {
       logger.error(`Add UPS error: ${error instanceof Error ? error.message : String(error)}`);
@@ -75,10 +77,10 @@ export class UpsHandler {
           checkInterval: config.checkInterval,
           upsDevices: [{
             id: 'default',
-            name: 'Default UPS',
+        name: 'Default UPS',
-            snmp: config.snmp,
+        snmp: config.snmp,
-            thresholds: config.thresholds,
+        groups: [],
-            groups: [],
+        actions: [],
           }],
           groups: [],
         };
@@ -115,14 +117,12 @@ export class UpsHandler {
         runtime: 20,
       },
       groups: [],
+      actions: [],
     };
 
     // Gather SNMP settings
     await this.gatherSnmpSettings(newUps.snmp, prompt);
 
-    // Gather threshold settings
-    await this.gatherThresholdSettings(newUps.thresholds, prompt);
-
     // Gather UPS model settings
     await this.gatherUpsModelSettings(newUps.snmp, prompt);
 
@@ -134,6 +134,9 @@ export class UpsHandler {
       await groupHandler.assignUpsToGroups(newUps, config.groups, prompt);
     }
 
+// Gather action settings
+    await this.gatherActionSettings(newUps.actions, prompt);
+
     // Add the new UPS to the config
     config.upsDevices.push(newUps);
 
@@ -178,6 +181,7 @@ export class UpsHandler {
         await this.runEditProcess(upsId, prompt);
       } finally {
         rl.close();
+        process.stdin.destroy();
       }
     } catch (error) {
       logger.error(`Edit UPS error: ${error instanceof Error ? error.message : String(error)}`);
@@ -218,16 +222,16 @@ export class UpsHandler {
     // Convert old format to new format if needed
     if (!config.upsDevices) {
       // Initialize with the current config as the first UPS
-      if (!config.snmp || !config.thresholds) {
+      if (!config.snmp) {
-        logger.error('Legacy configuration is missing required SNMP or threshold settings');
+        logger.error('Legacy configuration is missing required SNMP settings');
         return;
       }
       config.upsDevices = [{
         id: 'default',
         name: 'Default UPS',
         snmp: config.snmp,
-        thresholds: config.thresholds,
         groups: [],
+        actions: [],
       }];
       config.groups = [];
       logger.log('Converting existing configuration to multi-UPS format.');
@@ -262,9 +266,6 @@ export class UpsHandler {
     // Edit SNMP settings
     await this.gatherSnmpSettings(upsToEdit.snmp, prompt);
 
-    // Edit threshold settings
-    await this.gatherThresholdSettings(upsToEdit.thresholds, prompt);
-
     // Edit UPS model settings
     await this.gatherUpsModelSettings(upsToEdit.snmp, prompt);
 
@@ -276,6 +277,14 @@ export class UpsHandler {
       await groupHandler.assignUpsToGroups(upsToEdit, config.groups, prompt);
     }
 
+    // Initialize actions array if not exists
+    if (!upsToEdit.actions) {
+      upsToEdit.actions = [];
+    }
+
+    // Edit action settings
+    await this.gatherActionSettings(upsToEdit.actions, prompt);
+
     // Save the configuration
     await this.nupst.getDaemon().saveConfig(config);
 
@@ -344,6 +353,7 @@ export class UpsHandler {
       });
 
       rl.close();
+      process.stdin.destroy();
 
       if (confirm !== 'y' && confirm !== 'yes') {
         logger.log('Deletion cancelled.');
@@ -376,11 +386,10 @@ export class UpsHandler {
       try {
         await this.nupst.getDaemon().loadConfig();
       } catch (error) {
-        const errorBoxWidth = 45;
+        logger.logBox('Configuration Error', [
-        logger.logBoxTitle('Configuration Error', errorBoxWidth);
+          'No configuration found.',
-        logger.logBoxLine('No configuration found.');
+          "Please run 'nupst ups add' first to create a configuration.",
-        logger.logBoxLine("Please run 'nupst setup' first to create a configuration.");
+        ], 50, 'error');
-        logger.logBoxEnd();
         return;
       }
 
@@ -390,58 +399,56 @@ export class UpsHandler {
       // Check if multi-UPS config
       if (!config.upsDevices || !Array.isArray(config.upsDevices)) {
         // Legacy single UPS configuration
-        const boxWidth = 45;
+        logger.logBox('UPS Devices', [
-        logger.logBoxTitle('UPS Devices', boxWidth);
+          'Legacy single-UPS configuration detected.',
-        logger.logBoxLine('Legacy single-UPS configuration detected.');
+          '',
-        if (!config.snmp || !config.thresholds) {
+          ...(!config.snmp 
-          logger.logBoxLine('');
+            ? ['Error: Configuration missing SNMP settings']
-          logger.logBoxLine('Error: Configuration missing SNMP or threshold settings');
+            : [
-          logger.logBoxEnd();
+                'Default UPS:',
-          return;
+                `  Host: ${config.snmp.host}:${config.snmp.port}`,
-        }
+                `  Model: ${config.snmp.upsModel || 'cyberpower'}`,
-        logger.logBoxLine('');
+                '',
-        logger.logBoxLine('Default UPS:');
+                'Use "nupst ups add" to add more UPS devices and migrate',
-        logger.logBoxLine(`  Host: ${config.snmp.host}:${config.snmp.port}`);
+                'to the multi-UPS configuration format.',
-        logger.logBoxLine(`  Model: ${config.snmp.upsModel || 'cyberpower'}`);
+              ]
-        logger.logBoxLine(
+          ),
-          `  Thresholds: ${config.thresholds.battery}% battery, ${config.thresholds.runtime} min runtime`,
+        ], 60, 'warning');
-        );
-        logger.logBoxLine('');
-        logger.logBoxLine('Use "nupst add" to add more UPS devices and migrate');
-        logger.logBoxLine('to the multi-UPS configuration format.');
-        logger.logBoxEnd();
         return;
       }
 
-      // Display UPS list
+      // Display UPS list with modern table
-      const boxWidth = 60;
-      logger.logBoxTitle('UPS Devices', boxWidth);
-
       if (config.upsDevices.length === 0) {
-        logger.logBoxLine('No UPS devices configured.');
+        logger.logBox('UPS Devices', [
-        logger.logBoxLine('Use "nupst add" to add a UPS device.');
+          'No UPS devices configured.',
-      } else {
+          '',
-        logger.logBoxLine(`Found ${config.upsDevices.length} UPS device(s)`);
+          `${theme.dim('Run')} ${theme.command('nupst ups add')} ${theme.dim('to add a device')}`,
-        logger.logBoxLine('');
+        ], 60, 'info');
-        logger.logBoxLine(
+        return;
-          'ID         | Name                 | Host            | Mode         | Groups',
-        );
-        logger.logBoxLine(
-          '-----------+----------------------+-----------------+--------------+----------------',
-        );
-
-        for (const ups of config.upsDevices) {
-          const id = ups.id.padEnd(10, ' ').substring(0, 10);
-          const name = (ups.name || '').padEnd(20, ' ').substring(0, 20);
-          const host = `${ups.snmp.host}:${ups.snmp.port}`.padEnd(15, ' ').substring(0, 15);
-          const model = (ups.snmp.upsModel || 'cyberpower').padEnd(12, ' ').substring(0, 12);
-          const groups = ups.groups.length > 0 ? ups.groups.join(', ') : 'None';
-
-          logger.logBoxLine(`${id} | ${name} | ${host} | ${model} | ${groups}`);
-        }
       }
 
-      logger.logBoxEnd();
+      // Prepare table data
+      const rows = config.upsDevices.map((ups) => ({
+        id: ups.id,
+        name: ups.name || '',
+        host: `${ups.snmp.host}:${ups.snmp.port}`,
+        model: ups.snmp.upsModel || 'cyberpower',
+        groups: ups.groups.length > 0 ? ups.groups.join(', ') : theme.dim('None'),
+      }));
+
+      const columns: ITableColumn[] = [
+        { header: 'ID', key: 'id', align: 'left', color: theme.highlight },
+        { header: 'Name', key: 'name', align: 'left' },
+        { header: 'Host:Port', key: 'host', align: 'left', color: theme.info },
+        { header: 'Model', key: 'model', align: 'left' },
+        { header: 'Groups', key: 'groups', align: 'left' },
+      ];
+
+      logger.log('');
+      logger.info(`UPS Devices (${config.upsDevices.length}):`);
+      logger.log('');
+      logger.logTable(columns, rows);
+      logger.log('');
     } catch (error) {
       logger.error(
         `Failed to list UPS devices: ${error instanceof Error ? error.message : String(error)}`,
@@ -504,9 +511,8 @@ export class UpsHandler {
    */
   private displayTestConfig(config: any): void {
     // Check if this is a UPS device or full configuration
-    const isUpsConfig = config.snmp && config.thresholds;
+    const isUpsConfig = config.snmp;
     const snmpConfig = isUpsConfig ? config.snmp : config.snmp || {};
-    const thresholds = isUpsConfig ? config.thresholds : config.thresholds || {};
     const checkInterval = config.checkInterval || 30000;
 
     // Get UPS name and ID if available
@@ -550,10 +556,6 @@ export class UpsHandler {
       );
       logger.logBoxLine(`  Battery Runtime: ${snmpConfig.customOIDs.BATTERY_RUNTIME || 'Not set'}`);
     }
-    logger.logBoxLine('Thresholds:');
-    logger.logBoxLine(`  Battery: ${thresholds.battery}%`);
-    logger.logBoxLine(`  Runtime: ${thresholds.runtime} minutes`);
-
     // Show group assignments if this is a UPS config
     if (config.groups && Array.isArray(config.groups)) {
       logger.logBoxLine(
@@ -577,7 +579,6 @@ export class UpsHandler {
     try {
       // Create a test config with a short timeout
       const snmpConfig = config.snmp ? config.snmp : config.snmp;
-      const thresholds = config.thresholds ? config.thresholds : config.thresholds;
 
       const testConfig = {
         ...snmpConfig,
@@ -594,10 +595,7 @@ export class UpsHandler {
       logger.logBoxLine(`  Runtime Remaining: ${status.batteryRuntime} minutes`);
       logger.logBoxEnd();
 
-      // Check status against thresholds if on battery
+      
-      if (status.powerStatus === 'onBattery') {
-        this.analyzeThresholds(status, thresholds);
-      }
     } catch (error) {
       const errorBoxWidth = 45;
       logger.logBoxTitle(`Connection Failed: ${upsName}`, errorBoxWidth);
@@ -667,10 +665,11 @@ export class UpsHandler {
 
     // SNMP Version
     const defaultVersion = snmpConfig.version || 1;
-    console.log('\nSNMP Version:');
+    logger.log('');
-    console.log('  1) SNMPv1');
+    logger.info('SNMP Version:');
-    console.log('  2) SNMPv2c');
+    logger.dim('  1) SNMPv1');
-    console.log('  3) SNMPv3 (with security features)');
+    logger.dim('  2) SNMPv2c');
+    logger.dim('  3) SNMPv3 (with security features)');
     const versionInput = await prompt(`Select SNMP version [${defaultVersion}]: `);
     const version = parseInt(versionInput, 10);
     snmpConfig.version = versionInput.trim() && (version === 1 || version === 2 || version === 3)
@@ -697,13 +696,15 @@ export class UpsHandler {
     snmpConfig: any,
     prompt: (question: string) => Promise<string>,
   ): Promise<void> {
-    console.log('\nSNMPv3 Security Settings:');
+    logger.log('');
+    logger.info('SNMPv3 Security Settings:');
 
     // Security Level
-    console.log('\nSecurity Level:');
+    logger.log('');
-    console.log('  1) noAuthNoPriv (No Authentication, No Privacy)');
+    logger.info('Security Level:');
-    console.log('  2) authNoPriv (Authentication, No Privacy)');
+    logger.dim('  1) noAuthNoPriv (No Authentication, No Privacy)');
-    console.log('  3) authPriv (Authentication and Privacy)');
+    logger.dim('  2) authNoPriv (Authentication, No Privacy)');
+    logger.dim('  3) authPriv (Authentication and Privacy)');
     const defaultSecLevel = snmpConfig.securityLevel
       ? snmpConfig.securityLevel === 'noAuthNoPriv'
         ? 1
@@ -752,8 +753,9 @@ export class UpsHandler {
 
       // Allow customizing the timeout value
       const defaultTimeout = snmpConfig.timeout / 1000; // Convert from ms to seconds for display
-      console.log(
+      logger.log('');
-        '\nSNMPv3 operations with authentication and privacy may require longer timeouts.',
+      logger.info(
+        'SNMPv3 operations with authentication and privacy may require longer timeouts.',
       );
       const timeoutInput = await prompt(`SNMP Timeout in seconds [${defaultTimeout}]: `);
       const timeout = parseInt(timeoutInput, 10);
@@ -773,9 +775,10 @@ export class UpsHandler {
     prompt: (question: string) => Promise<string>,
   ): Promise<void> {
     // Authentication protocol
-    console.log('\nAuthentication Protocol:');
+    logger.log('');
-    console.log('  1) MD5');
+    logger.info('Authentication Protocol:');
-    console.log('  2) SHA');
+    logger.dim('  1) MD5');
+    logger.dim('  2) SHA');
     const defaultAuthProtocol = snmpConfig.authProtocol === 'SHA' ? 2 : 1;
     const authProtocolInput = await prompt(
       `Select Authentication Protocol [${defaultAuthProtocol}]: `,
@@ -799,9 +802,10 @@ export class UpsHandler {
     prompt: (question: string) => Promise<string>,
   ): Promise<void> {
     // Privacy protocol
-    console.log('\nPrivacy Protocol:');
+    logger.log('');
-    console.log('  1) DES');
+    logger.info('Privacy Protocol:');
-    console.log('  2) AES');
+    logger.dim('  1) DES');
+    logger.dim('  2) AES');
     const defaultPrivProtocol = snmpConfig.privProtocol === 'AES' ? 2 : 1;
     const privProtocolInput = await prompt(`Select Privacy Protocol [${defaultPrivProtocol}]: `);
     const privProtocol = parseInt(privProtocolInput, 10) || defaultPrivProtocol;
@@ -813,38 +817,6 @@ export class UpsHandler {
     snmpConfig.privKey = privKey.trim() || defaultPrivKey;
   }
 
-  /**
-   * Gather threshold settings
-   * @param thresholds Thresholds configuration object to update
-   * @param prompt Function to prompt for user input
-   */
-  private async gatherThresholdSettings(
-    thresholds: any,
-    prompt: (question: string) => Promise<string>,
-  ): Promise<void> {
-    console.log('\nShutdown Thresholds:');
-
-    // Battery threshold
-    const defaultBatteryThreshold = thresholds.battery || 60;
-    const batteryThresholdInput = await prompt(
-      `Battery percentage threshold [${defaultBatteryThreshold}%]: `,
-    );
-    const batteryThreshold = parseInt(batteryThresholdInput, 10);
-    thresholds.battery = batteryThresholdInput.trim() && !isNaN(batteryThreshold)
-      ? batteryThreshold
-      : defaultBatteryThreshold;
-
-    // Runtime threshold
-    const defaultRuntimeThreshold = thresholds.runtime || 20;
-    const runtimeThresholdInput = await prompt(
-      `Runtime minutes threshold [${defaultRuntimeThreshold} minutes]: `,
-    );
-    const runtimeThreshold = parseInt(runtimeThresholdInput, 10);
-    thresholds.runtime = runtimeThresholdInput.trim() && !isNaN(runtimeThreshold)
-      ? runtimeThreshold
-      : defaultRuntimeThreshold;
-  }
-
   /**
    * Gather UPS model settings
    * @param snmpConfig SNMP configuration object to update
@@ -854,13 +826,14 @@ export class UpsHandler {
     snmpConfig: any,
     prompt: (question: string) => Promise<string>,
   ): Promise<void> {
-    console.log('\nUPS Model Selection:');
+    logger.log('');
-    console.log('  1) CyberPower');
+    logger.info('UPS Model Selection:');
-    console.log('  2) APC');
+    logger.dim('  1) CyberPower');
-    console.log('  3) Eaton');
+    logger.dim('  2) APC');
-    console.log('  4) TrippLite');
+    logger.dim('  3) Eaton');
-    console.log('  5) Liebert/Vertiv');
+    logger.dim('  4) TrippLite');
-    console.log('  6) Custom (Advanced)');
+    logger.dim('  5) Liebert/Vertiv');
+    logger.dim('  6) Custom (Advanced)');
 
     const defaultModelValue = snmpConfig.upsModel === 'cyberpower'
       ? 1
@@ -891,8 +864,9 @@ export class UpsHandler {
       snmpConfig.upsModel = 'liebert';
     } else if (modelValue === 6) {
       snmpConfig.upsModel = 'custom';
-      console.log('\nEnter custom OIDs for your UPS:');
+      logger.log('');
-      console.log('(Leave blank to use standard RFC 1628 OIDs as fallback)');
+      logger.info('Enter custom OIDs for your UPS:');
+      logger.dim('(Leave blank to use standard RFC 1628 OIDs as fallback)');
 
       // Custom OIDs
       const powerStatusOID = await prompt('Power Status OID: ');
@@ -908,6 +882,151 @@ export class UpsHandler {
     }
   }
 
+  /**
+   * Gather action configuration settings
+   * @param actions Actions array to configure
+   * @param prompt Function to prompt for user input
+   */
+  private async gatherActionSettings(
+    actions: any[],
+    prompt: (question: string) => Promise<string>,
+  ): Promise<void> {
+    logger.log('');
+    logger.info('Action Configuration (Optional):');
+    logger.dim('Actions are triggered on power status changes and threshold violations.');
+    logger.dim('Leave empty to use default shutdown behavior on threshold violations.');
+
+    const configureActions = await prompt('Configure custom actions? (y/N): ');
+    if (configureActions.toLowerCase() !== 'y') {
+      return; // Keep existing actions or use default
+    }
+
+    // Clear existing actions
+    actions.length = 0;
+
+    let addMore = true;
+    while (addMore) {
+      logger.log('');
+      logger.info('Action Type:');
+      logger.dim('  1) Shutdown (system shutdown)');
+      logger.dim('  2) Webhook (HTTP notification)');
+      logger.dim('  3) Custom Script (run .sh file from /etc/nupst)');
+
+      const typeInput = await prompt('Select action type [1]: ');
+      const typeValue = parseInt(typeInput, 10) || 1;
+
+      const action: any = {};
+
+      if (typeValue === 1) {
+        // Shutdown action
+        action.type = 'shutdown';
+
+        const delayInput = await prompt('Shutdown delay in minutes [5]: ');
+        const delay = parseInt(delayInput, 10);
+        if (delayInput.trim() && !isNaN(delay)) {
+          action.shutdownDelay = delay;
+        }
+      } else if (typeValue === 2) {
+        // Webhook action
+        action.type = 'webhook';
+
+        const url = await prompt('Webhook URL: ');
+        if (!url.trim()) {
+          logger.warn('Webhook URL required, skipping action');
+          continue;
+        }
+        action.webhookUrl = url.trim();
+
+        logger.log('');
+        logger.info('HTTP Method:');
+        logger.dim('  1) POST (JSON body)');
+        logger.dim('  2) GET (query parameters)');
+        const methodInput = await prompt('Select method [1]: ');
+        action.webhookMethod = methodInput === '2' ? 'GET' : 'POST';
+
+        const timeoutInput = await prompt('Timeout in seconds [10]: ');
+        const timeout = parseInt(timeoutInput, 10);
+        if (timeoutInput.trim() && !isNaN(timeout)) {
+          action.webhookTimeout = timeout * 1000; // Convert to ms
+        }
+      } else if (typeValue === 3) {
+        // Script action
+        action.type = 'script';
+
+        const scriptPath = await prompt('Script filename (in /etc/nupst/, must end with .sh): ');
+        if (!scriptPath.trim() || !scriptPath.trim().endsWith('.sh')) {
+          logger.warn('Script path must end with .sh, skipping action');
+          continue;
+        }
+        action.scriptPath = scriptPath.trim();
+
+        const timeoutInput = await prompt('Script timeout in seconds [60]: ');
+        const timeout = parseInt(timeoutInput, 10);
+        if (timeoutInput.trim() && !isNaN(timeout)) {
+          action.scriptTimeout = timeout * 1000; // Convert to ms
+        }
+      } else {
+        logger.warn('Invalid action type, skipping');
+        continue;
+      }
+
+      // Configure trigger mode (applies to all action types)
+      logger.log('');
+      logger.info('Trigger Mode:');
+      logger.dim('  1) Power changes + thresholds (default)');
+      logger.dim('  2) Only power status changes');
+      logger.dim('  3) Only threshold violations');
+      logger.dim('  4) Any change (every ~30s check)');
+      const triggerInput = await prompt('Select trigger mode [1]: ');
+      const triggerValue = parseInt(triggerInput, 10) || 1;
+      
+      switch (triggerValue) {
+        case 2:
+          action.triggerMode = 'onlyPowerChanges';
+          break;
+        case 3:
+          action.triggerMode = 'onlyThresholds';
+          break;
+        case 4:
+          action.triggerMode = 'anyChange';
+          break;
+        default:
+          action.triggerMode = 'powerChangesAndThresholds';
+      }
+
+      // Configure thresholds if needed for onlyThresholds or powerChangesAndThresholds modes
+      if (action.triggerMode === 'onlyThresholds' || action.triggerMode === 'powerChangesAndThresholds') {
+        logger.log('');
+        logger.info('Action Thresholds:');
+        logger.dim('Action will trigger when battery or runtime falls below these values (while on battery)');
+        
+        const batteryInput = await prompt('Battery threshold percentage [60]: ');
+        const battery = parseInt(batteryInput, 10);
+        const batteryThreshold = (batteryInput.trim() && !isNaN(battery)) ? battery : 60;
+
+        const runtimeInput = await prompt('Runtime threshold in minutes [20]: ');
+        const runtime = parseInt(runtimeInput, 10);
+        const runtimeThreshold = (runtimeInput.trim() && !isNaN(runtime)) ? runtime : 20;
+
+        action.thresholds = {
+          battery: batteryThreshold,
+          runtime: runtimeThreshold,
+        };
+      }
+
+      actions.push(action);
+      logger.success(`${action.type.charAt(0).toUpperCase() + action.type.slice(1)} action added (mode: ${action.triggerMode || 'powerChangesAndThresholds'})`);
+
+      const more = await prompt('Add another action? (y/N): ');
+      addMore = more.toLowerCase() === 'y';
+    }
+
+    if (actions.length > 0) {
+      logger.log('');
+      logger.success(`${actions.length} action(s) configured`);
+    }
+  }
+
   /**
    * Display UPS configuration summary
    * @param ups UPS configuration
@@ -920,9 +1039,7 @@ export class UpsHandler {
     logger.logBoxLine(`SNMP Host: ${ups.snmp.host}:${ups.snmp.port}`);
     logger.logBoxLine(`SNMP Version: ${ups.snmp.version}`);
     logger.logBoxLine(`UPS Model: ${ups.snmp.upsModel}`);
-    logger.logBoxLine(
+    
-      `Thresholds: ${ups.thresholds.battery}% battery, ${ups.thresholds.runtime} min runtime`,
-    );
     if (ups.groups && ups.groups.length > 0) {
       logger.logBoxLine(`Groups: ${ups.groups.join(', ')}`);
     } else {

ts/daemon.ts

@@ -4,9 +4,12 @@ import * as path from 'node:path';
 import { exec, execFile } from 'node:child_process';
 import { promisify } from 'node:util';
 import { NupstSnmp } from './snmp/manager.ts';
-import type { ISnmpConfig } from './snmp/types.ts';
+import type { ISnmpConfig, IUpsStatus as ISnmpUpsStatus } from './snmp/types.ts';
-import { logger } from './logger.ts';
+import { logger, type ITableColumn } from './logger.ts';
 import { MigrationRunner } from './migrations/index.ts';
+import { theme, symbols, getBatteryColor, getRuntimeColor, formatPowerStatus } from './colors.ts';
+import type { IActionConfig } from './actions/base-action.ts';
+import { ActionManager, type IActionContext, type TPowerStatus } from './actions/index.ts';
 
 const execAsync = promisify(exec);
 const execFileAsync = promisify(execFile);
@@ -21,15 +24,10 @@ export interface IUpsConfig {
   name: string;
   /** SNMP configuration settings */
   snmp: ISnmpConfig;
-  /** Threshold settings for initiating shutdown */
-  thresholds: {
-    /** Shutdown when battery below this percentage */
-    battery: number;
-    /** Shutdown when runtime below this minutes */
-    runtime: number;
-  };
   /** Group IDs this UPS belongs to */
   groups: string[];
+  /** Actions to trigger on power status changes and threshold violations */
+  actions?: IActionConfig[];
 }
 
 /**
@@ -44,6 +42,8 @@ export interface IGroupConfig {
   mode: 'redundant' | 'nonRedundant';
   /** Optional description */
   description?: string;
+  /** Actions to trigger on power status changes and threshold violations */
+  actions?: IActionConfig[];
 }
 
 /**
@@ -76,7 +76,7 @@ export interface INupstConfig {
 /**
  * UPS status tracking interface
  */
-interface IUpsStatus {
+export interface IUpsStatus {
   id: string;
   name: string;
   powerStatus: 'online' | 'onBattery' | 'unknown';
@@ -96,7 +96,7 @@ export class NupstDaemon {
 
   /** Default configuration */
   private readonly DEFAULT_CONFIG: INupstConfig = {
-    version: '4.0',
+    version: '4.2',
     upsDevices: [
       {
         id: 'default',
@@ -117,16 +117,23 @@ export class NupstDaemon {
           // UPS model for OID selection
           upsModel: 'cyberpower',
         },
-        thresholds: {
-          battery: 60, // Shutdown when battery below 60%
-          runtime: 20, // Shutdown when runtime below 20 minutes
-        },
         groups: [],
+        actions: [
+          {
+            type: 'shutdown',
+            triggerMode: 'onlyThresholds',
+            thresholds: {
+              battery: 60, // Shutdown when battery below 60%
+              runtime: 20, // Shutdown when runtime below 20 minutes
+            },
+            shutdownDelay: 5,
+          },
+        ],
       },
     ],
     groups: [],
     checkInterval: 30000, // Check every 30 seconds
-  };
+  }
 
   private config: INupstConfig;
   private snmp: NupstSnmp;
@@ -164,11 +171,13 @@ export class NupstDaemon {
       const { config: migratedConfig, migrated } = await migrationRunner.run(parsedConfig);
 
       // Save migrated config back to disk if any migrations ran
+      // Cast to INupstConfig since migrations ensure the output is valid
+      const validConfig = migratedConfig as unknown as INupstConfig;
       if (migrated) {
-        this.config = migratedConfig;
+        this.config = validConfig;
         await this.saveConfig(this.config);
       } else {
-        this.config = migratedConfig;
+        this.config = validConfig;
       }
 
       return this.config;
@@ -198,7 +207,7 @@ export class NupstDaemon {
 
       // Ensure version is always set and remove legacy fields before saving
       const configToSave: INupstConfig = {
-        version: '4.0',
+        version: '4.1',
         upsDevices: config.upsDevices,
         groups: config.groups,
         checkInterval: config.checkInterval,
@@ -207,11 +216,9 @@ export class NupstDaemon {
       fs.writeFileSync(this.CONFIG_PATH, JSON.stringify(configToSave, null, 2));
       this.config = configToSave;
 
-      console.log('┌─ Configuration Saved ─────────────────────┐');
+      logger.logBox('Configuration Saved', [`Location: ${this.CONFIG_PATH}`], 45, 'success');
-      console.log(`│ Location: ${this.CONFIG_PATH}`);
-      console.log('└──────────────────────────────────────────┘');
     } catch (error) {
-      console.error('Error saving configuration:', error);
+      logger.error(`Error saving configuration: ${error}`);
     }
   }
 
@@ -219,10 +226,7 @@ export class NupstDaemon {
    * Helper method to log configuration errors consistently
    */
   private logConfigError(message: string): void {
-    console.error('┌─ Configuration Error ─────────────────────┐');
+    logger.logBox('Configuration Error', [message, "Please run 'nupst setup' first to create a configuration."], 45, 'error');
-    console.error(`│ ${message}`);
-    console.error("│ Please run 'nupst setup' first to create a configuration.");
-    console.error('└───────────────────────────────────────────┘');
   }
 
   /**
@@ -315,29 +319,57 @@ export class NupstDaemon {
    * Log the loaded configuration settings
    */
   private logConfigLoaded(): void {
-    const boxWidth = 50;
-    logger.logBoxTitle('Configuration Loaded', boxWidth);
-
-    if (this.config.upsDevices && this.config.upsDevices.length > 0) {
-      logger.logBoxLine(`UPS Devices: ${this.config.upsDevices.length}`);
-      for (const ups of this.config.upsDevices) {
-        logger.logBoxLine(`  - ${ups.name} (${ups.id}): ${ups.snmp.host}:${ups.snmp.port}`);
-      }
-    } else {
-      logger.logBoxLine('No UPS devices configured');
-    }
-
-    if (this.config.groups && this.config.groups.length > 0) {
-      logger.logBoxLine(`Groups: ${this.config.groups.length}`);
-      for (const group of this.config.groups) {
-        logger.logBoxLine(`  - ${group.name} (${group.id}): ${group.mode} mode`);
-      }
-    } else {
-      logger.logBoxLine('No Groups configured');
-    }
     
+    logger.log('');
+    logger.logBoxTitle('Configuration Loaded', 70, 'success');
     logger.logBoxLine(`Check Interval: ${this.config.checkInterval / 1000} seconds`);
     logger.logBoxEnd();
+    logger.log('');
+
+    // Display UPS devices in a table
+    if (this.config.upsDevices && this.config.upsDevices.length > 0) {
+      logger.info(`UPS Devices (${this.config.upsDevices.length}):`);
+      
+      const upsColumns: Array<{ header: string; key: string; align?: 'left' | 'right'; color?: (val: string) => string }> = [
+        { header: 'Name', key: 'name', align: 'left', color: theme.highlight },
+        { header: 'ID', key: 'id', align: 'left', color: theme.dim },
+        { header: 'Host:Port', key: 'host', align: 'left', color: theme.info },
+        { header: 'Actions', key: 'actions', align: 'left' },
+      ];
+
+      const upsRows: Array<Record<string, string>> = this.config.upsDevices.map((ups) => ({
+        name: ups.name,
+        id: ups.id,
+        host: `${ups.snmp.host}:${ups.snmp.port}`,
+        actions: `${(ups.actions || []).length} configured`,
+      }));
+
+      logger.logTable(upsColumns, upsRows);
+      logger.log('');
+    } else {
+      logger.warn('No UPS devices configured');
+      logger.log('');
+    }
+
+    // Display groups in a table
+    if (this.config.groups && this.config.groups.length > 0) {
+      logger.info(`Groups (${this.config.groups.length}):`);
+      
+      const groupColumns: Array<{ header: string; key: string; align?: 'left' | 'right'; color?: (val: string) => string }> = [
+        { header: 'Name', key: 'name', align: 'left', color: theme.highlight },
+        { header: 'ID', key: 'id', align: 'left', color: theme.dim },
+        { header: 'Mode', key: 'mode', align: 'left', color: theme.info },
+      ];
+
+      const groupRows: Array<Record<string, string>> = this.config.groups.map((group) => ({
+        name: group.name,
+        id: group.id,
+        mode: group.mode,
+      }));
+
+      logger.logTable(groupColumns, groupRows);
+      logger.log('');
+    }
   }
 
   /**
@@ -377,9 +409,6 @@ export class NupstDaemon {
           lastLogTime = currentTime;
         }
 
-        // Check if shutdown is required based on group configurations
-        await this.evaluateGroupShutdownConditions();
-
         // Wait before next check
         await this.sleep(this.config.checkInterval);
       } catch (error) {
@@ -433,11 +462,42 @@ export class NupstDaemon {
 
         // Check if power status changed
         if (currentStatus && currentStatus.powerStatus !== status.powerStatus) {
-          logger.logBoxTitle(`Power Status Change: ${ups.name}`, 50);
+          logger.log('');
-          logger.logBoxLine(`Status changed: ${currentStatus.powerStatus} → ${status.powerStatus}`);
+          logger.logBoxTitle(`Power Status Change: ${ups.name}`, 60, 'warning');
+          logger.logBoxLine(`Previous: ${formatPowerStatus(currentStatus.powerStatus)}`);
+          logger.logBoxLine(`Current:  ${formatPowerStatus(status.powerStatus)}`);
+          logger.logBoxLine(`Time: ${new Date().toISOString()}`);
           logger.logBoxEnd();
+          logger.log('');
 
           updatedStatus.lastStatusChange = currentTime;
+
+          // Trigger actions for power status change
+          await this.triggerUpsActions(ups, updatedStatus, currentStatus, 'powerStatusChange');
+        }
+
+        // Check if any action's thresholds are exceeded (for threshold violation triggers)
+        // Only check when on battery power
+        if (status.powerStatus === 'onBattery' && ups.actions && ups.actions.length > 0) {
+          let anyThresholdExceeded = false;
+          
+          for (const actionConfig of ups.actions) {
+            if (actionConfig.thresholds) {
+              if (
+                status.batteryCapacity < actionConfig.thresholds.battery ||
+                status.batteryRuntime < actionConfig.thresholds.runtime
+              ) {
+                anyThresholdExceeded = true;
+                break;
+              }
+            }
+          }
+
+          // Trigger actions with threshold violation reason if any threshold is exceeded
+          // Actions will individually check their own thresholds in shouldExecute()
+          if (anyThresholdExceeded) {
+            await this.triggerUpsActions(ups, updatedStatus, currentStatus, 'thresholdViolation');
+          }
         }
 
         // Update the status in the map
@@ -457,171 +517,100 @@ export class NupstDaemon {
    */
   private logAllUpsStatus(): void {
     const timestamp = new Date().toISOString();
-    const boxWidth = 60;
+    
-    logger.logBoxTitle('Periodic Status Update', boxWidth);
+    logger.log('');
+    logger.logBoxTitle('Periodic Status Update', 70, 'info');
     logger.logBoxLine(`Timestamp: ${timestamp}`);
-    logger.logBoxLine('');
-
-    for (const [id, status] of this.upsStatus.entries()) {
-      logger.logBoxLine(`UPS: ${status.name} (${id})`);
-      logger.logBoxLine(`  Power Status: ${status.powerStatus}`);
-      logger.logBoxLine(
-        `  Battery: ${status.batteryCapacity}% | Runtime: ${status.batteryRuntime} min`,
-      );
-      logger.logBoxLine('');
-    }
-
     logger.logBoxEnd();
+    logger.log('');
+
+    // Build table data
+    const columns: Array<{ header: string; key: string; align?: 'left' | 'right'; color?: (val: string) => string }> = [
+      { header: 'UPS Name', key: 'name', align: 'left', color: theme.highlight },
+      { header: 'ID', key: 'id', align: 'left', color: theme.dim },
+      { header: 'Power Status', key: 'powerStatus', align: 'left' },
+      { header: 'Battery', key: 'battery', align: 'right' },
+      { header: 'Runtime', key: 'runtime', align: 'right' },
+    ];
+
+    const rows: Array<Record<string, string>> = [];
+    for (const [id, status] of this.upsStatus.entries()) {
+      const batteryColor = getBatteryColor(status.batteryCapacity);
+      const runtimeColor = getRuntimeColor(status.batteryRuntime);
+      
+      rows.push({
+        name: status.name,
+        id: id,
+        powerStatus: formatPowerStatus(status.powerStatus),
+        battery: batteryColor(status.batteryCapacity + '%'),
+        runtime: runtimeColor(status.batteryRuntime + ' min'),
+      });
+    }
+
+    logger.logTable(columns, rows);
+    logger.log('');
+  }
+
+  
+
+    
+
+  /**
+   * Build action context from UPS state
+   * @param ups UPS configuration
+   * @param status Current UPS status
+   * @param triggerReason Why this action is being triggered
+   * @returns Action context
+   */
+  private buildActionContext(
+    ups: IUpsConfig,
+    status: IUpsStatus,
+    triggerReason: 'powerStatusChange' | 'thresholdViolation',
+  ): IActionContext {
+    return {
+      upsId: ups.id,
+      upsName: ups.name,
+      powerStatus: status.powerStatus as TPowerStatus,
+      batteryCapacity: status.batteryCapacity,
+      batteryRuntime: status.batteryRuntime,
+      previousPowerStatus: 'unknown' as TPowerStatus, // Will be set from map in calling code
+      timestamp: Date.now(),
+      triggerReason,
+    };
   }
 
   /**
-   * Evaluate if shutdown is required based on group configurations
+   * Trigger actions for a UPS device
+   * @param ups UPS configuration
+   * @param status Current UPS status
+   * @param previousStatus Previous UPS status (for determining previousPowerStatus)
+   * @param triggerReason Why actions are being triggered
    */
-  private async evaluateGroupShutdownConditions(): Promise<void> {
+  private async triggerUpsActions(
-    if (!this.config.groups || this.config.groups.length === 0) {
+    ups: IUpsConfig,
-      // No groups defined, check individual UPS conditions
+    status: IUpsStatus,
-      for (const [id, status] of this.upsStatus.entries()) {
+    previousStatus: IUpsStatus | undefined,
-        if (status.powerStatus === 'onBattery') {
+    triggerReason: 'powerStatusChange' | 'thresholdViolation',
-          // Find the UPS config
-          const ups = this.config.upsDevices.find((u) => u.id === id);
-          if (ups) {
-            await this.evaluateUpsShutdownCondition(ups, status);
-          }
-        }
-      }
-      return;
-    }
-
-    // Evaluate each group
-    for (const group of this.config.groups) {
-      // Find all UPS devices in this group
-      const upsDevicesInGroup = this.config.upsDevices.filter((ups) =>
-        ups.groups && ups.groups.includes(group.id)
-      );
-
-      if (upsDevicesInGroup.length === 0) {
-        // No UPS devices in this group
-        continue;
-      }
-
-      if (group.mode === 'redundant') {
-        // Redundant mode: only shutdown if ALL UPS devices in the group are in critical condition
-        await this.evaluateRedundantGroup(group, upsDevicesInGroup);
-      } else {
-        // Non-redundant mode: shutdown if ANY UPS device in the group is in critical condition
-        await this.evaluateNonRedundantGroup(group, upsDevicesInGroup);
-      }
-    }
-  }
-
-  /**
-   * Evaluate a redundant group for shutdown conditions
-   * In redundant mode, we only shut down if ALL UPS devices are in critical condition
-   */
-  private async evaluateRedundantGroup(
-    group: IGroupConfig,
-    upsDevices: IUpsConfig[],
   ): Promise<void> {
-    // Count UPS devices on battery and in critical condition
+    const actions = ups.actions || [];
-    let upsOnBattery = 0;
-    let upsInCriticalCondition = 0;
-
-    for (const ups of upsDevices) {
-      const status = this.upsStatus.get(ups.id);
-      if (!status) continue;
-
-      if (status.powerStatus === 'onBattery') {
-        upsOnBattery++;
-
-        // Check if this UPS is in critical condition
-        if (
-          status.batteryCapacity < ups.thresholds.battery ||
-          status.batteryRuntime < ups.thresholds.runtime
-        ) {
-          upsInCriticalCondition++;
-        }
-      }
-    }
-
-    // All UPS devices must be online for a redundant group to be considered healthy
-    const allUpsCount = upsDevices.length;
-
-    // If all UPS are on battery and in critical condition, shutdown
-    if (upsOnBattery === allUpsCount && upsInCriticalCondition === allUpsCount) {
-      logger.logBoxTitle(`Group Shutdown Required: ${group.name}`, 50);
-      logger.logBoxLine(`Mode: Redundant`);
-      logger.logBoxLine(`All ${allUpsCount} UPS devices in critical condition`);
-      logger.logBoxEnd();
-
-      await this.initiateShutdown(
-        `All UPS devices in redundant group "${group.name}" in critical condition`,
-      );
-    }
-  }
-
-  /**
-   * Evaluate a non-redundant group for shutdown conditions
-   * In non-redundant mode, we shut down if ANY UPS device is in critical condition
-   */
-  private async evaluateNonRedundantGroup(
-    group: IGroupConfig,
-    upsDevices: IUpsConfig[],
-  ): Promise<void> {
-    for (const ups of upsDevices) {
-      const status = this.upsStatus.get(ups.id);
-      if (!status) continue;
-
-      if (status.powerStatus === 'onBattery') {
-        // Check if this UPS is in critical condition
-        if (
-          status.batteryCapacity < ups.thresholds.battery ||
-          status.batteryRuntime < ups.thresholds.runtime
-        ) {
-          logger.logBoxTitle(`Group Shutdown Required: ${group.name}`, 50);
-          logger.logBoxLine(`Mode: Non-Redundant`);
-          logger.logBoxLine(`UPS ${ups.name} in critical condition`);
-          logger.logBoxLine(
-            `Battery: ${status.batteryCapacity}% (threshold: ${ups.thresholds.battery}%)`,
-          );
-          logger.logBoxLine(
-            `Runtime: ${status.batteryRuntime} min (threshold: ${ups.thresholds.runtime} min)`,
-          );
-          logger.logBoxEnd();
-
-          await this.initiateShutdown(
-            `UPS "${ups.name}" in non-redundant group "${group.name}" in critical condition`,
-          );
-          return; // Exit after initiating shutdown
-        }
-      }
-    }
-  }
-
-  /**
-   * Evaluate an individual UPS for shutdown conditions
-   */
-  private async evaluateUpsShutdownCondition(ups: IUpsConfig, status: IUpsStatus): Promise<void> {
-    // Only evaluate UPS devices not in any group
-    if (ups.groups && ups.groups.length > 0) {
-      return;
-    }
-
-    // Check threshold conditions
-    if (
-      status.batteryCapacity < ups.thresholds.battery ||
-      status.batteryRuntime < ups.thresholds.runtime
-    ) {
-      logger.logBoxTitle(`UPS Shutdown Required: ${ups.name}`, 50);
-      logger.logBoxLine(
-        `Battery: ${status.batteryCapacity}% (threshold: ${ups.thresholds.battery}%)`,
-      );
-      logger.logBoxLine(
-        `Runtime: ${status.batteryRuntime} min (threshold: ${ups.thresholds.runtime} min)`,
-      );
-      logger.logBoxEnd();
 
+    // Backward compatibility: if no actions configured, use default shutdown behavior
+    if (actions.length === 0 && triggerReason === 'thresholdViolation') {
+      // Fall back to old shutdown logic for backward compatibility
       await this.initiateShutdown(`UPS "${ups.name}" battery or runtime below threshold`);
+      return;
     }
+
+    if (actions.length === 0) {
+      return; // No actions to execute
+    }
+
+    // Build action context
+    const context = this.buildActionContext(ups, status, triggerReason);
+    context.previousPowerStatus = (previousStatus?.powerStatus || 'unknown') as TPowerStatus;
+
+    // Execute actions
+    await ActionManager.executeActions(actions, context);
   }
 
   /**
@@ -750,38 +739,61 @@ export class NupstDaemon {
     const MAX_MONITORING_TIME = 5 * 60 * 1000; // Max 5 minutes of monitoring
     const startTime = Date.now();
 
-    logger.log(
+    logger.log('');
-      `Emergency shutdown threshold: ${EMERGENCY_RUNTIME_THRESHOLD} minutes remaining battery runtime`,
+    logger.logBoxTitle('Shutdown Monitoring Active', 60, 'warning');
-    );
+    logger.logBoxLine(`Emergency threshold: ${EMERGENCY_RUNTIME_THRESHOLD} minutes runtime`);
+    logger.logBoxLine(`Check interval: ${CHECK_INTERVAL / 1000} seconds`);
+    logger.logBoxLine(`Max monitoring time: ${MAX_MONITORING_TIME / 1000} seconds`);
+    logger.logBoxEnd();
+    logger.log('');
 
     // Continue monitoring until max monitoring time is reached
     while (Date.now() - startTime < MAX_MONITORING_TIME) {
       try {
-        logger.log('Checking UPS status during shutdown...');
+        logger.info('Checking UPS status during shutdown...');
+
+        // Build table for UPS status during shutdown
+        const columns: Array<{ header: string; key: string; align?: 'left' | 'right'; color?: (val: string) => string }> = [
+          { header: 'UPS Name', key: 'name', align: 'left', color: theme.highlight },
+          { header: 'Battery', key: 'battery', align: 'right' },
+          { header: 'Runtime', key: 'runtime', align: 'right' },
+          { header: 'Status', key: 'status', align: 'left' },
+        ];
+
+        const rows: Array<Record<string, string>> = [];
+        let emergencyDetected = false;
+        let emergencyUps: { ups: IUpsConfig; status: ISnmpUpsStatus } | null = null;
 
         // Check all UPS devices
         for (const ups of this.config.upsDevices) {
           try {
             const status = await this.snmp.getUpsStatus(ups.snmp);
 
-            logger.log(
+            const batteryColor = getBatteryColor(status.batteryCapacity);
-              `UPS ${ups.name}: Battery ${status.batteryCapacity}%, Runtime: ${status.batteryRuntime} minutes`,
+            const runtimeColor = getRuntimeColor(status.batteryRuntime);
-            );
 
-            // If any UPS battery runtime gets critically low, force immediate shutdown
+            const isCritical = status.batteryRuntime < EMERGENCY_RUNTIME_THRESHOLD;
-            if (status.batteryRuntime < EMERGENCY_RUNTIME_THRESHOLD) {
-              logger.logBoxTitle('EMERGENCY SHUTDOWN', 50);
-              logger.logBoxLine(
-                `UPS ${ups.name} runtime critically low: ${status.batteryRuntime} minutes`,
-              );
-              logger.logBoxLine('Forcing immediate shutdown!');
-              logger.logBoxEnd();
             
-              // Force immediate shutdown
+            rows.push({
-              await this.forceImmediateShutdown();
+              name: ups.name,
-              return;
+              battery: batteryColor(status.batteryCapacity + '%'),
+              runtime: runtimeColor(status.batteryRuntime + ' min'),
+              status: isCritical ? theme.error('CRITICAL!') : theme.success('OK'),
+            });
+
+            // If any UPS battery runtime gets critically low, flag for immediate shutdown
+            if (isCritical && !emergencyDetected) {
+              emergencyDetected = true;
+              emergencyUps = { ups, status };
             }
           } catch (upsError) {
+            rows.push({
+              name: ups.name,
+              battery: theme.error('N/A'),
+              runtime: theme.error('N/A'),
+              status: theme.error('ERROR'),
+            });
+            
             logger.error(
               `Error checking UPS ${ups.name} during shutdown: ${
                 upsError instanceof Error ? upsError.message : String(upsError)
@@ -790,6 +802,27 @@ export class NupstDaemon {
           }
         }
 
+        // Display the table
+        logger.logTable(columns, rows);
+        logger.log('');
+
+        // If emergency detected, trigger immediate shutdown
+        if (emergencyDetected && emergencyUps) {
+          logger.log('');
+          logger.logBoxTitle('EMERGENCY SHUTDOWN', 60, 'error');
+          logger.logBoxLine(
+            `UPS ${emergencyUps.ups.name} runtime critically low: ${emergencyUps.status.batteryRuntime} minutes`,
+          );
+          logger.logBoxLine(`Emergency threshold: ${EMERGENCY_RUNTIME_THRESHOLD} minutes`);
+          logger.logBoxLine('Forcing immediate shutdown!');
+          logger.logBoxEnd();
+          logger.log('');
+
+          // Force immediate shutdown
+          await this.forceImmediateShutdown();
+          return;
+        }
+
         // Wait before checking again
         await this.sleep(CHECK_INTERVAL);
       } catch (error) {
@@ -802,7 +835,9 @@ export class NupstDaemon {
       }
     }
 
-    logger.log('UPS monitoring during shutdown completed');
+    logger.log('');
+    logger.success('UPS monitoring during shutdown completed');
+    logger.log('');
   }
 
   /**

ts/migrations/base-migration.ts

@@ -5,16 +5,14 @@
  * Migrations run in order based on the `order` field, allowing users to jump
  * multiple versions (e.g., v1 → v4 runs migrations 2, 3, and 4).
  */
+/**
+ * Abstract base class for configuration migrations
+ *
+ * Each migration represents an upgrade from one config version to another.
+ * Migrations run in order based on the `toVersion` field, allowing users to jump
+ * multiple versions (e.g., v1 → v4 runs migrations 2, 3, and 4).
+ */
 export abstract class BaseMigration {
-  /**
-   * Migration order number
-   * - Order 2: v1 → v2
-   * - Order 3: v2 → v3
-   * - Order 4: v3 → v4
-   * etc.
-   */
-  abstract readonly order: number;
-
   /**
    * Source version this migration upgrades from
    * e.g., "1.x", "3.x"
@@ -23,25 +21,25 @@ export abstract class BaseMigration {
 
   /**
    * Target version this migration upgrades to
-   * e.g., "2.0", "4.0"
+   * e.g., "2.0", "4.0", "4.1"
    */
   abstract readonly toVersion: string;
 
   /**
    * Check if this migration should run on the given config
    *
-   * @param config - Raw configuration object to check
+   * @param config - Raw configuration object to check (unknown schema for migrations)
    * @returns True if migration should run, false otherwise
    */
-  abstract shouldRun(config: any): Promise<boolean>;
+  abstract shouldRun(config: Record<string, unknown>): Promise<boolean>;
 
   /**
    * Perform the migration on the given config
    *
-   * @param config - Raw configuration object to migrate
+   * @param config - Raw configuration object to migrate (unknown schema for migrations)
    * @returns Migrated configuration object
    */
-  abstract migrate(config: any): Promise<any>;
+  abstract migrate(config: Record<string, unknown>): Promise<Record<string, unknown>>;
 
   /**
    * Get human-readable name for this migration
@@ -51,4 +49,19 @@ export abstract class BaseMigration {
   getName(): string {
     return `Migration ${this.fromVersion} → ${this.toVersion}`;
   }
+
+  /**
+   * Parse version string into a comparable number
+   * Supports formats like "2.0", "4.1", etc.
+   * Returns a number like 2.0, 4.1 for sorting
+   *
+   * @returns Parsed version number for ordering
+   */
+  getVersionOrder(): number {
+    const parsed = parseFloat(this.toVersion);
+    if (isNaN(parsed)) {
+      throw new Error(`Invalid version format: ${this.toVersion}`);
+    }
+    return parsed;
+  }
 }

ts/migrations/index.ts

@@ -8,3 +8,4 @@ export { BaseMigration } from './base-migration.ts';
 export { MigrationRunner } from './migration-runner.ts';
 export { MigrationV1ToV2 } from './migration-v1-to-v2.ts';
 export { MigrationV3ToV4 } from './migration-v3-to-v4.ts';
+export { MigrationV4_0ToV4_1 } from './migration-v4.0-to-v4.1.ts';

ts/migrations/migration-runner.ts

@@ -1,6 +1,7 @@
 import { BaseMigration } from './base-migration.ts';
 import { MigrationV1ToV2 } from './migration-v1-to-v2.ts';
 import { MigrationV3ToV4 } from './migration-v3-to-v4.ts';
+import { MigrationV4_0ToV4_1 } from './migration-v4.0-to-v4.1.ts';
 import { logger } from '../logger.ts';
 
 /**
@@ -17,11 +18,12 @@ export class MigrationRunner {
     this.migrations = [
       new MigrationV1ToV2(),
       new MigrationV3ToV4(),
-      // Add future migrations here (v4→v5, v5→v6, etc.)
+      new MigrationV4_0ToV4_1(),
+      // Add future migrations here (v4.3, v4.4, etc.)
     ];
 
-    // Sort by order to ensure they run in sequence
+    // Sort by version order to ensure they run in sequence
-    this.migrations.sort((a, b) => a.order - b.order);
+    this.migrations.sort((a, b) => a.getVersionOrder() - b.getVersionOrder());
   }
 
   /**
@@ -30,16 +32,20 @@ export class MigrationRunner {
    * @param config - Raw configuration object to migrate
    * @returns Migrated configuration and whether migrations ran
    */
-  async run(config: any): Promise<{ config: any; migrated: boolean }> {
+  async run(
+    config: Record<string, unknown>,
+  ): Promise<{ config: Record<string, unknown>; migrated: boolean }> {
     let currentConfig = config;
     let anyMigrationsRan = false;
 
-    logger.dim('Checking for required config migrations...');
-
     for (const migration of this.migrations) {
       const shouldRun = await migration.shouldRun(currentConfig);
 
       if (shouldRun) {
+        // Only show "checking" message when we actually need to migrate
+        if (!anyMigrationsRan) {
+          logger.dim('Checking for required config migrations...');
+        }
         logger.info(`Running ${migration.getName()}...`);
         currentConfig = await migration.migrate(currentConfig);
         anyMigrationsRan = true;
@@ -49,7 +55,7 @@ export class MigrationRunner {
     if (anyMigrationsRan) {
       logger.success('Configuration migrations complete');
     } else {
-      logger.dim('No migrations needed');
+      logger.success('config format ok');
     }
 
     return {

ts/migrations/migration-v1-to-v2.ts

@@ -20,7 +20,6 @@ import { logger } from '../logger.ts';
  * }
  */
 export class MigrationV1ToV2 extends BaseMigration {
-  readonly order = 2;
   readonly fromVersion = '1.x';
   readonly toVersion = '2.0';
 

ts/migrations/migration-v3-to-v4.ts

@@ -39,7 +39,6 @@ import { logger } from '../logger.ts';
  * }
  */
 export class MigrationV3ToV4 extends BaseMigration {
-  readonly order = 4;
   readonly fromVersion = '3.x';
   readonly toVersion = '4.0';
 

ts/migrations/migration-v4.0-to-v4.1.ts

@@ -0,0 +1,127 @@
+import { BaseMigration } from './base-migration.ts';
+import { logger } from '../logger.ts';
+
+/**
+ * Migration from v4.0 to v4.1
+ *
+ * Major changes:
+ * 1. Moves thresholds from UPS level to action level
+ * 2. Creates default shutdown action for UPS devices that had thresholds
+ * 3. Adds empty actions array to UPS devices without actions
+ * 4. Adds empty actions array to groups
+ *
+ * Transforms v4.0 format (with UPS-level thresholds):
+ * {
+ *   version: "4.0",
+ *   upsDevices: [
+ *     {
+ *       id: "ups-1",
+ *       name: "UPS 1",
+ *       snmp: {...},
+ *       thresholds: { battery: 60, runtime: 20 },  // UPS-level
+ *       groups: []
+ *     }
+ *   ]
+ * }
+ *
+ * To v4.1 format (with action-level thresholds):
+ * {
+ *   version: "4.1",
+ *   upsDevices: [
+ *     {
+ *       id: "ups-1",
+ *       name: "UPS 1",
+ *       snmp: {...},
+ *       groups: [],
+ *       actions: [  // Thresholds moved here
+ *         {
+ *           type: "shutdown",
+ *           thresholds: { battery: 60, runtime: 20 },
+ *           triggerMode: "onlyThresholds",
+ *           shutdownDelay: 5
+ *         }
+ *       ]
+ *     }
+ *   ]
+ * }
+ */
+export class MigrationV4_0ToV4_1 extends BaseMigration {
+  readonly fromVersion = '4.0';
+  readonly toVersion = '4.1';
+
+  async shouldRun(config: Record<string, unknown>): Promise<boolean> {
+    // Run if config is version 4.0
+    if (config.version === '4.0') {
+      return true;
+    }
+
+    // Also run if config has upsDevices with thresholds at UPS level (v4.0 format)
+    if (Array.isArray(config.upsDevices) && config.upsDevices.length > 0) {
+      const firstDevice = config.upsDevices[0] as Record<string, unknown>;
+      // v4.0 has thresholds at UPS level, v4.1 has them in actions
+      return firstDevice.thresholds !== undefined;
+    }
+
+    return false;
+  }
+
+  async migrate(config: Record<string, unknown>): Promise<Record<string, unknown>> {
+    logger.info(`${this.getName()}: Migrating v4.0 config to v4.1 format...`);
+    logger.dim(`  - Moving thresholds from UPS level to action level`);
+    logger.dim(`  - Creating default shutdown actions from existing thresholds`);
+
+    // Migrate UPS devices
+    const devices = (config.upsDevices as Array<Record<string, unknown>>) || [];
+    const migratedDevices = devices.map((device) => {
+      const migrated: Record<string, unknown> = {
+        id: device.id,
+        name: device.name,
+        snmp: device.snmp,
+        groups: device.groups || [],
+      };
+
+      // If device has thresholds at UPS level, convert to shutdown action
+      const deviceThresholds = device.thresholds as { battery: number; runtime: number } | undefined;
+      if (deviceThresholds) {
+        migrated.actions = [
+          {
+            type: 'shutdown',
+            thresholds: {
+              battery: deviceThresholds.battery,
+              runtime: deviceThresholds.runtime,
+            },
+            triggerMode: 'onlyThresholds', // Preserve old behavior (only on threshold violation)
+            shutdownDelay: 5, // Default delay
+          },
+        ];
+        logger.dim(
+          `    → ${device.name}: Created shutdown action (battery: ${deviceThresholds.battery}%, runtime: ${deviceThresholds.runtime}min)`,
+        );
+      } else {
+        // No thresholds, just add empty actions array
+        migrated.actions = device.actions || [];
+      }
+
+      return migrated;
+    });
+
+    // Add actions to groups
+    const groups = (config.groups as Array<Record<string, unknown>>) || [];
+    const migratedGroups = groups.map((group) => ({
+      ...group,
+      actions: group.actions || [],
+    }));
+
+    const result = {
+      version: this.toVersion,
+      upsDevices: migratedDevices,
+      groups: migratedGroups,
+      checkInterval: config.checkInterval || 30000,
+    };
+
+    logger.success(
+      `${this.getName()}: Migration complete (${migratedDevices.length} devices, ${migratedGroups.length} groups updated)`,
+    );
+    return result;
+  }
+}

ts/nupst.ts

@@ -6,6 +6,7 @@ import { logger } from './logger.ts';
 import { UpsHandler } from './cli/ups-handler.ts';
 import { GroupHandler } from './cli/group-handler.ts';
 import { ServiceHandler } from './cli/service-handler.ts';
+import { ActionHandler } from './cli/action-handler.ts';
 import * as https from 'node:https';
 
 /**
@@ -19,6 +20,7 @@ export class Nupst {
   private readonly upsHandler: UpsHandler;
   private readonly groupHandler: GroupHandler;
   private readonly serviceHandler: ServiceHandler;
+  private readonly actionHandler: ActionHandler;
   private updateAvailable: boolean = false;
   private latestVersion: string = '';
 
@@ -36,6 +38,7 @@ export class Nupst {
     this.upsHandler = new UpsHandler(this);
     this.groupHandler = new GroupHandler(this);
     this.serviceHandler = new ServiceHandler(this);
+    this.actionHandler = new ActionHandler(this);
   }
 
   /**
@@ -80,6 +83,13 @@ export class Nupst {
     return this.serviceHandler;
   }
 
+  /**
+   * Get the Action handler for action management
+   */
+  public getActionHandler(): ActionHandler {
+    return this.actionHandler;
+  }
+
   /**
    * Get the current version of NUPST
    * @returns The current version string

ts/systemd.ts

@@ -1,7 +1,8 @@
 import process from 'node:process';
 import { promises as fs } from 'node:fs';
 import { execSync } from 'node:child_process';
-import { NupstDaemon } from './daemon.ts';
+import { NupstDaemon, type IUpsConfig } from './daemon.ts';
+import { NupstSnmp } from './snmp/manager.ts';
 import { logger } from './logger.ts';
 import { theme, symbols, getBatteryColor, getRuntimeColor, formatPowerStatus } from './colors.ts';
 
@@ -50,11 +51,11 @@ WantedBy=multi-user.target
     try {
       await fs.access(configPath);
     } catch (error) {
-      console.log('');
+      logger.log('');
-      console.log(`${symbols.error} ${theme.error('No configuration found')}`);
+      logger.error('No configuration found');
-      console.log(`  ${theme.dim('Config file:')} ${configPath}`);
+      logger.log(`  ${theme.dim('Config file:')} ${configPath}`);
-      console.log(`  ${theme.dim('Run')} ${theme.command('nupst ups add')} ${theme.dim('to create a configuration')}`);
+      logger.log(`  ${theme.dim('Run')} ${theme.command('nupst ups add')} ${theme.dim('to create a configuration')}`);
-      console.log('');
+      logger.log('');
       throw new Error('Configuration not found');
     }
   }
@@ -134,6 +135,45 @@ WantedBy=multi-user.target
    * Get status of the systemd service and UPS
    * @param debugMode Whether to enable debug mode for SNMP
    */
+  /**
+   * Display version information and update status
+   * @private
+   */
+  private async displayVersionInfo(): Promise<void> {
+    try {
+      const nupst = this.daemon.getNupstSnmp().getNupst();
+      const version = nupst.getVersion();
+      
+      // Check for updates
+      const updateAvailable = await nupst.checkForUpdates();
+      
+      // Display version info
+      if (updateAvailable) {
+        const updateStatus = nupst.getUpdateStatus();
+        logger.log('');
+        logger.log(
+          `${theme.dim('NUPST')} ${theme.dim('v' + version)}  ${symbols.warning} ${theme.statusWarning(`Update available: v${updateStatus.latestVersion}`)}`,
+        );
+        logger.log(`  ${theme.dim('Run')} ${theme.command('sudo nupst update')} ${theme.dim('to upgrade')}`);
+      } else {
+        logger.log('');
+        logger.log(
+          `${theme.dim('NUPST')} ${theme.dim('v' + version)}  ${symbols.success} ${theme.success('Up to date')}`,
+        );
+      }
+    } catch (error) {
+      // If version check fails, show at least the current version
+      try {
+        const nupst = this.daemon.getNupstSnmp().getNupst();
+        const version = nupst.getVersion();
+        logger.log('');
+        logger.log(`${theme.dim('NUPST')} ${theme.dim('v' + version)}`);
+      } catch (_innerError) {
+        // Silently fail if we can't even get the version
+      }
+    }
+  }
+
   public async getStatus(debugMode: boolean = false): Promise<void> {
     try {
       // Enable debug mode if requested
@@ -144,7 +184,10 @@ WantedBy=multi-user.target
         this.daemon.getNupstSnmp().enableDebug();
       }
 
-      // Check if config exists first
+      // Display version and update status first
+      await this.displayVersionInfo();
+
+      // Check if config exists
       try {
         await this.checkConfigExists();
       } catch (error) {
@@ -192,11 +235,11 @@ WantedBy=multi-user.target
       }
 
       // Display beautiful status
-      console.log('');
+      logger.log('');
       if (isActive) {
-        console.log(`${symbols.running} ${theme.success('Service:')} ${theme.statusActive('active (running)')}`);
+        logger.log(`${symbols.running} ${theme.success('Service:')} ${theme.statusActive('active (running)')}`);
       } else {
-        console.log(`${symbols.stopped} ${theme.dim('Service:')} ${theme.statusInactive('inactive')}`);
+        logger.log(`${symbols.stopped} ${theme.dim('Service:')} ${theme.statusInactive('inactive')}`);
       }
 
       if (pid || memory || cpu) {
@@ -204,14 +247,14 @@ WantedBy=multi-user.target
         if (pid) details.push(`PID: ${theme.dim(pid)}`);
         if (memory) details.push(`Memory: ${theme.dim(memory)}`);
         if (cpu) details.push(`CPU: ${theme.dim(cpu)}`);
-        console.log(`  ${details.join('  ')}`);
+        logger.log(`  ${details.join('  ')}`);
       }
-      console.log('');
+      logger.log('');
 
     } catch (error) {
-      console.log('');
+      logger.log('');
-      console.log(`${symbols.stopped} ${theme.dim('Service:')} ${theme.statusInactive('not installed')}`);
+      logger.log(`${symbols.stopped} ${theme.dim('Service:')} ${theme.statusInactive('not installed')}`);
-      console.log('');
+      logger.log('');
     }
   }
 
@@ -228,35 +271,44 @@ WantedBy=multi-user.target
 
       // Check if we have the new multi-UPS config format
       if (config.upsDevices && Array.isArray(config.upsDevices) && config.upsDevices.length > 0) {
-        console.log(theme.info(`UPS Devices (${config.upsDevices.length}):`));
+        logger.info(`UPS Devices (${config.upsDevices.length}):`);
 
         // Show status for each UPS
         for (const ups of config.upsDevices) {
           await this.displaySingleUpsStatus(ups, snmp);
         }
       } else if (config.snmp) {
-        // Legacy single UPS configuration
+        // Legacy single UPS configuration (v1/v2 format)
-        console.log(theme.info('UPS Devices (1):'));
+        logger.info('UPS Devices (1):');
-        const legacyUps = {
+        const legacyUps: IUpsConfig = {
           id: 'default',
           name: 'Default UPS',
           snmp: config.snmp,
-          thresholds: config.thresholds,
           groups: [],
+          actions: config.thresholds
+            ? [
+                {
+                  type: 'shutdown',
+                  thresholds: config.thresholds,
+                  triggerMode: 'onlyThresholds',
+                  shutdownDelay: 5,
+                },
+              ]
+            : [],
         };
 
         await this.displaySingleUpsStatus(legacyUps, snmp);
       } else {
-        console.log('');
+        logger.log('');
-        console.log(`${symbols.warning} ${theme.warning('No UPS devices configured')}`);
+        logger.warn('No UPS devices configured');
-        console.log(`  ${theme.dim('Run')} ${theme.command('nupst ups add')} ${theme.dim('to add a device')}`);
+        logger.log(`  ${theme.dim('Run')} ${theme.command('nupst ups add')} ${theme.dim('to add a device')}`);
-        console.log('');
+        logger.log('');
       }
     } catch (error) {
-      console.log('');
+      logger.log('');
-      console.log(`${symbols.error} ${theme.error('Failed to retrieve UPS status')}`);
+      logger.error('Failed to retrieve UPS status');
-      console.log(`  ${theme.dim(error instanceof Error ? error.message : String(error))}`);
+      logger.log(`  ${theme.dim(error instanceof Error ? error.message : String(error))}`);
-      console.log('');
+      logger.log('');
     }
   }
 
@@ -265,7 +317,7 @@ WantedBy=multi-user.target
    * @param ups UPS configuration
    * @param snmp SNMP manager
    */
-  private async displaySingleUpsStatus(ups: any, snmp: any): Promise<void> {
+  private async displaySingleUpsStatus(ups: IUpsConfig, snmp: NupstSnmp): Promise<void> {
     try {
       // Create a test config with a short timeout
       const testConfig = {
@@ -284,15 +336,24 @@ WantedBy=multi-user.target
       }
 
       // Display UPS name and power status
-      console.log(`  ${statusSymbol} ${theme.highlight(ups.name)} - ${formatPowerStatus(status.powerStatus)}`);
+      logger.log(`  ${statusSymbol} ${theme.highlight(ups.name)} - ${formatPowerStatus(status.powerStatus)}`);
 
       // Display battery with color coding
       const batteryColor = getBatteryColor(status.batteryCapacity);
-      const batterySymbol = status.batteryCapacity >= ups.thresholds.battery ? symbols.success : symbols.warning;
+
-      console.log(`    Battery: ${batteryColor(status.batteryCapacity + '%')} ${batterySymbol}  Runtime: ${getRuntimeColor(status.batteryRuntime)(status.batteryRuntime + ' min')}`);
+      // Get threshold from actions (if any action has thresholds defined)
+      const actionWithThresholds = ups.actions?.find((action) => action.thresholds);
+      const batteryThreshold = actionWithThresholds?.thresholds?.battery;
+      const batterySymbol = batteryThreshold !== undefined && status.batteryCapacity >= batteryThreshold
+        ? symbols.success
+        : batteryThreshold !== undefined
+        ? symbols.warning
+        : '';
+
+      logger.log(`    Battery: ${batteryColor(status.batteryCapacity + '%')} ${batterySymbol}  Runtime: ${getRuntimeColor(status.batteryRuntime)(status.batteryRuntime + ' min')}`);
 
       // Display host info
-      console.log(`    ${theme.dim(`Host: ${ups.snmp.host}:${ups.snmp.port}`)}`);
+      logger.log(`    ${theme.dim(`Host: ${ups.snmp.host}:${ups.snmp.port}`)}`);
 
       // Display groups if any
       if (ups.groups && ups.groups.length > 0) {
@@ -301,17 +362,17 @@ WantedBy=multi-user.target
           const group = config.groups?.find((g: { id: string }) => g.id === groupId);
           return group ? group.name : groupId;
         });
-        console.log(`    ${theme.dim(`Groups: ${groupNames.join(', ')}`)}`);
+        logger.log(`    ${theme.dim(`Groups: ${groupNames.join(', ')}`)}`);
       }
 
-      console.log('');
+      logger.log('');
 
     } catch (error) {
       // Display error for this UPS
-      console.log(`  ${symbols.error} ${theme.highlight(ups.name)} - ${theme.error('Connection failed')}`);
+      logger.log(`  ${symbols.error} ${theme.highlight(ups.name)} - ${theme.error('Connection failed')}`);
-      console.log(`    ${theme.dim(error instanceof Error ? error.message : String(error))}`);
+      logger.log(`    ${theme.dim(error instanceof Error ? error.message : String(error))}`);
-      console.log(`    ${theme.dim(`Host: ${ups.snmp.host}:${ups.snmp.port}`)}`);
+      logger.log(`    ${theme.dim(`Host: ${ups.snmp.host}:${ups.snmp.port}`)}`);
-      console.log('');
+      logger.log('');
     }
   }