3.1.2

changelog.md

@@ -1,5 +1,68 @@
 # Changelog
 
+## 2025-03-28 - 3.1.2 - fix(cli/ups-handler)
+Improve UPS device listing table formatting for better column alignment
+
+- Adjusted header spacing for the Host column and overall table alignment in the UPS handler output.
+
+## 2025-03-28 - 3.1.1 - fix(cli)
+Improve table header formatting in group and UPS listings
+
+- Adjusted column padding in group listing for proper alignment
+- Fixed UPS table header spacing for consistent CLI output
+
+## 2025-03-28 - 3.1.0 - feat(cli)
+Refactor CLI commands to use dedicated handlers for UPS, group, and service management
+
+- Extracted UPS-related CLI logic into a new UpsHandler
+- Introduced GroupHandler to manage UPS groups commands
+- Added ServiceHandler for systemd service operations
+- Updated CLI routing in cli.ts to delegate commands to the new handlers
+- Exposed getters for the new handlers in the Nupst class
+
+## 2025-03-28 - 3.0.1 - fix(cli)
+Simplify UPS ID generation by removing the redundant promptForUniqueUpsId function in the CLI module and replacing it with the shortId helper.
+
+- Deleted the unused promptForUniqueUpsId method from ts/cli.ts.
+- Updated UPS configuration to generate a unique ID directly using helpers.shortId().
+- Improved code clarity by removing unnecessary interactive prompts for UPS IDs.
+
+## 2025-03-28 - 3.0.0 - BREAKING CHANGE(core)
+Add multi-UPS support and group management; update CLI, configuration and documentation to support multiple UPS devices with group modes
+
+- Implemented multi-UPS configuration with an array of UPS devices and groups in the configuration file
+- Added group management commands (group add, edit, delete, list) with redundant and non-redundant modes
+- Revamped CLI command parsing for UPS management (add, edit, delete, list, setup) and group subcommands
+- Updated readme and documentation to reflect new configuration structure and features
+- Enhanced logging and status display for multiple UPS devices
+
+## 2025-03-26 - 2.6.17 - fix(logger)
+Preserve logbox width after logBoxEnd so that subsequent logBoxLine calls continue using the set width.
+
+- Removed the reset of currentBoxWidth in logBoxEnd to allow persistent width across logbox calls.
+- Ensures that logBoxLine uses the previously set width when no new width is provided.
+
+## 2025-03-26 - 2.6.16 - fix(cli)
+Improve CLI logging consistency by replacing direct console output with unified logger calls.
+
+- Replaced console.log and console.error with logger.log and logger.error in CLI commands
+- Standardized debug, error, and status messages using logger's logbox utilities
+- Enhanced consistency of log output throughout the ts/cli.ts file
+
+## 2025-03-26 - 2.6.15 - fix(logger)
+Replace direct console logging with unified logger interface for consistent formatting
+
+- Substitute console.log, console.error, and related calls with logger methods in cli, daemon, systemd, nupst, and index modules
+- Integrate logBox formatting for structured output and consistent log presentation
+- Update test expectations in test.logger.ts to check for standardized error messages
+- Refactor logging calls throughout the codebase for improved clarity and maintainability
+
+## 2025-03-26 - 2.6.14 - fix(systemd)
+Shorten closing log divider in systemd service installation output for consistent formatting.
+
+- Replaced the overly long footer with a shorter one in ts/systemd.ts.
+- This change improves log readability without affecting functionality.
+
 ## 2025-03-26 - 2.6.13 - fix(cli)
 Fix CLI update output box formatting
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@serve.zone/nupst",
-  "version": "2.6.13",
+  "version": "3.1.2",
   "description": "Node.js UPS Shutdown Tool for SNMP-enabled UPS devices",
   "main": "dist/index.js",
   "bin": {
@@ -56,5 +56,6 @@
       "mongodb-memory-server",
       "puppeteer"
     ]
-  }
+  },
+  "packageManager": "pnpm@10.7.0+sha512.6b865ad4b62a1d9842b61d674a393903b871d9244954f652b8842c2b553c72176b278f64c463e52d40fff8aba385c235c8c9ecf5cc7de4fd78b8bb6d49633ab6"
 }

readme.md

@@ -4,6 +4,10 @@ NUPST is a command-line tool that monitors SNMP-enabled UPS devices and initiate
 
 ## Features
 
+- **Multi-UPS Support**: Monitor and manage multiple UPS devices from a single installation
+- **Group Management**: Organize UPS devices into groups with different operating modes
+  - **Redundant Mode**: Only shutdown when ALL UPS devices in a group are in critical condition
+  - **Non-Redundant Mode**: Shutdown when ANY UPS device in a group is in critical condition
 - Monitors UPS devices using SNMP (v1, v2c, and v3 supported)
 - Automatic shutdown when battery level falls below threshold
 - Automatic shutdown when runtime remaining falls below threshold
@@ -124,8 +128,22 @@ Usage:
   nupst stop           - Stop the systemd service
   nupst start          - Start the systemd service
   nupst status         - Show status of the systemd service and UPS status
-  nupst setup          - Run the interactive setup to configure SNMP settings
+
-  nupst test           - Test the current configuration by connecting to the UPS
+UPS Management:
+  nupst add            - Add a new UPS device
+  nupst edit [id]      - Edit an existing UPS (default UPS if no ID provided)
+  nupst delete <id>    - Delete a UPS by ID
+  nupst list           - List all configured UPS devices
+  nupst setup          - Alias for 'nupst edit' (backward compatibility)
+  
+Group Management:
+  nupst group list     - List all UPS groups
+  nupst group add      - Add a new UPS group
+  nupst group edit <id> - Edit an existing UPS group
+  nupst group delete <id> - Delete a UPS group
+  
+System Commands:
+  nupst test           - Test the current configuration by connecting to all UPS devices
   nupst config         - Display the current configuration
   nupst update         - Update NUPST from repository and refresh systemd service (requires root)
   nupst uninstall      - Completely uninstall NUPST from the system (requires root)
@@ -138,22 +156,30 @@ Options:
 
 ## Configuration
 
-NUPST provides an interactive setup to configure your UPS:
+NUPST supports monitoring multiple UPS devices organized into groups. You can set up your UPS devices using the interactive commands:
 
 ```bash
-nupst setup
+# Add a new UPS device
+nupst add
+
+# Create a new group
+nupst group add
+
+# Assign UPS devices to groups
+nupst group edit <group-id>
 ```
 
-This will guide you through setting up:
+### Configuration File Structure
-- UPS IP address and SNMP settings
-- Shutdown thresholds for battery percentage and runtime
-- Monitoring interval
-- Test the connection to your UPS
 
-Alternatively, you can manually edit the configuration file at `/etc/nupst/config.json`. A default configuration will be created on first run:
+The configuration file is located at `/etc/nupst/config.json`. Here's an example of a multi-UPS configuration:
 
 ```json
 {
+  "checkInterval": 30000,
+  "upsDevices": [
+    {
+      "id": "ups-1",
+      "name": "Server Room UPS",
       "snmp": {
         "host": "192.168.1.100",
         "port": 161,
@@ -166,11 +192,44 @@ Alternatively, you can manually edit the configuration file at `/etc/nupst/confi
         "battery": 60,
         "runtime": 20
       },
-  "checkInterval": 30000
+      "groups": ["datacenter"]
+    },
+    {
+      "id": "ups-2",
+      "name": "Network Rack UPS",
+      "snmp": {
+        "host": "192.168.1.101",
+        "port": 161,
+        "community": "public",
+        "version": 1,
+        "timeout": 5000,
+        "upsModel": "apc"
+      },
+      "thresholds": {
+        "battery": 50,
+        "runtime": 15
+      },
+      "groups": ["datacenter"]
+    }
+  ],
+  "groups": [
+    {
+      "id": "datacenter",
+      "name": "Data Center",
+      "mode": "redundant",
+      "description": "Main data center UPS group"
+    }
+  ]
 }
 ```
 
-- `snmp`: SNMP connection settings
+### Configuration Fields
+
+- `checkInterval`: How often to check UPS status in milliseconds (default: 30000)
+- `upsDevices`: Array of UPS device configurations
+  - `id`: Unique identifier for the UPS
+  - `name`: Friendly name for the UPS
+  - `snmp`: SNMP connection settings
     - `host`: IP address of your UPS (default: 127.0.0.1)
     - `port`: SNMP port (default: 161)
     - `version`: SNMP version (1, 2, or 3)
@@ -190,10 +249,21 @@ Alternatively, you can manually edit the configuration file at `/etc/nupst/confi
         - `POWER_STATUS`: OID for power status
         - `BATTERY_CAPACITY`: OID for battery capacity percentage
         - `BATTERY_RUNTIME`: OID for runtime remaining in minutes
-- `thresholds`: When to trigger shutdown
+  - `thresholds`: When to trigger shutdown
     - `battery`: Battery percentage threshold (default: 60%)
     - `runtime`: Runtime minutes threshold (default: 20 minutes)
-- `checkInterval`: How often to check UPS status in milliseconds (default: 30000)
+  - `groups`: Array of group IDs this UPS belongs to
+- `groups`: Array of group configurations
+  - `id`: Unique identifier for the group
+  - `name`: Friendly name for the group
+  - `mode`: Group operating mode ('redundant' or 'nonRedundant')
+  - `description`: Optional description of the group
+
+### Group Modes
+
+- **Redundant Mode**: The system will only initiate shutdown if ALL UPS devices in the group are in critical condition (below threshold). This is ideal for redundant power setups where one UPS can keep systems running.
+  
+- **Non-Redundant Mode**: The system will initiate shutdown if ANY UPS device in the group is in critical condition. This is useful for scenarios where all UPS devices must be operational for the system to function properly.
 
 ## Setup as a Service
 

test/test.logger.ts

@@ -0,0 +1,160 @@
+import { tap, expect } from '@push.rocks/tapbundle';
+import { Logger } from '../ts/logger.js';
+
+// Create a Logger instance for testing
+const logger = new Logger();
+
+tap.test('should create a logger instance', async () => {
+  expect(logger instanceof Logger).toBeTruthy();
+});
+
+tap.test('should log messages with different log levels', async () => {
+  // We're not testing console output directly, just ensuring no errors
+  logger.log('Regular log message');
+  logger.error('Error message');
+  logger.warn('Warning message');
+  logger.success('Success message');
+
+  // Just assert that the test runs without errors
+  expect(true).toBeTruthy();
+});
+
+tap.test('should create a logbox with title, content, and end', async () => {
+  // Just ensuring no errors occur
+  logger.logBoxTitle('Test Box', 40);
+  logger.logBoxLine('This is a test line');
+  logger.logBoxEnd();
+
+  // Just assert that the test runs without errors
+  expect(true).toBeTruthy();
+});
+
+tap.test('should handle width persistence between logbox calls', async () => {
+  logger.logBoxTitle('Width Test', 45);
+  
+  // These should use the width from the title
+  logger.logBoxLine('Line 1');
+  logger.logBoxLine('Line 2');
+  logger.logBoxEnd();
+  
+  let errorThrown = false;
+  
+  try {
+    // This should work fine after the reset in logBoxEnd
+    logger.logBoxTitle('New Box', 30);
+    logger.logBoxLine('New line');
+    logger.logBoxEnd();
+  } catch (error) {
+    errorThrown = true;
+  }
+  
+  expect(errorThrown).toBeFalsy();
+});
+
+tap.test('should use default width when no width is specified', async () => {
+  // This should automatically use the default width instead of throwing
+  let errorThrown = false;
+  
+  try {
+    logger.logBoxLine('This should use default width');
+    logger.logBoxEnd();
+  } catch (error) {
+    errorThrown = true;
+  }
+  
+  // Verify no error was thrown
+  expect(errorThrown).toBeFalsy();
+});
+
+tap.test('should create a complete logbox in one call', async () => {
+  // Just ensuring no errors occur
+  logger.logBox('Complete Box', [
+    'Line 1',
+    'Line 2',
+    'Line 3'
+  ], 40);
+  
+  // Just assert that the test runs without errors
+  expect(true).toBeTruthy();
+});
+
+tap.test('should handle content that exceeds box width', async () => {
+  // Just ensuring no errors occur when content is too long
+  logger.logBox('Truncation Test', [
+    'This line is way too long and should be truncated because it exceeds the available space'
+  ], 30);
+  
+  // Just assert that the test runs without errors
+  expect(true).toBeTruthy();
+});
+
+tap.test('should create dividers with custom characters', async () => {
+  // Just ensuring no errors occur
+  logger.logDivider(30);
+  logger.logDivider(20, '*');
+  
+  // Just assert that the test runs without errors
+  expect(true).toBeTruthy();
+});
+
+tap.test('should create divider with default width', async () => {
+  // This should use the default width
+  logger.logDivider(undefined, '-');
+  
+  // Just assert that the test runs without errors
+  expect(true).toBeTruthy();
+});
+
+tap.test('Logger Demo', async () => {
+  console.log('\n=== LOGGER DEMO ===\n');
+  
+  // Basic logging
+  logger.log('Regular log message');
+  logger.error('Error message');
+  logger.warn('Warning message');
+  logger.success('Success message');
+  
+  // Logbox with title, content lines, and end
+  logger.logBoxTitle('Configuration Loaded', 50);
+  logger.logBoxLine('SNMP Settings:');
+  logger.logBoxLine('  Host: 127.0.0.1');
+  logger.logBoxLine('  Port: 161');
+  logger.logBoxLine('  Version: 1');
+  logger.logBoxEnd();
+  
+  // Complete logbox in one call
+  logger.logBox('UPS Status', [
+    'Power Status: onBattery',
+    'Battery Capacity: 75%',
+    'Runtime Remaining: 30 minutes'
+  ], 45);
+  
+  // Logbox with content that's too long for the width
+  logger.logBox('Truncation Example', [
+    'This line is short enough to fit within the box width',
+    'This line is way too long and will be truncated because it exceeds the available space for content within the logbox'
+  ], 40);
+  
+  // Demonstrating logbox width being remembered
+  logger.logBoxTitle('Width Persistence Example', 60);
+  logger.logBoxLine('These lines use the width from the title');
+  logger.logBoxLine('No need to specify the width again');
+  logger.logBoxEnd();
+  
+  // Demonstrating default width
+  console.log('\nDefault Width Example:');
+  logger.logBoxLine('This line uses the default width');
+  logger.logBoxLine('Still using default width');
+  logger.logBoxEnd();
+  
+  // Divider example
+  logger.log('\nDivider example:');
+  logger.logDivider(30);
+  logger.logDivider(30, '*');
+  logger.logDivider(undefined, '=');
+  
+  expect(true).toBeTruthy();
+});
+
+// Export the default tap object
+export default tap.start();

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@serve.zone/nupst',
-  version: '2.6.13',
+  version: '3.1.2',
   description: 'Node.js UPS Shutdown Tool for SNMP-enabled UPS devices'
 }

ts/cli/group-handler.ts

@@ -0,0 +1,565 @@
+import { Nupst } from '../nupst.js';
+import { logger } from '../logger.js';
+import * as helpers from '../helpers/index.js';
+import { type IGroupConfig } from '../daemon.js';
+
+/**
+ * Class for handling group-related CLI commands
+ * Provides interface for managing UPS groups
+ */
+export class GroupHandler {
+  private readonly nupst: Nupst;
+
+  /**
+   * Create a new Group handler
+   * @param nupst Reference to the main Nupst instance
+   */
+  constructor(nupst: Nupst) {
+    this.nupst = nupst;
+  }
+
+  /**
+   * List all UPS groups
+   */
+  public async list(): Promise<void> {
+    try {
+      // Try to load configuration
+      try {
+        await this.nupst.getDaemon().loadConfig();
+      } catch (error) {
+        const errorBoxWidth = 45;
+        logger.logBoxTitle('Configuration Error', errorBoxWidth);
+        logger.logBoxLine('No configuration found.');
+        logger.logBoxLine("Please run 'nupst setup' first to create a configuration.");
+        logger.logBoxEnd();
+        return;
+      }
+      
+      // Get current configuration
+      const config = this.nupst.getDaemon().getConfig();
+      
+      // Check if multi-UPS config
+      if (!config.groups || !Array.isArray(config.groups)) {
+        // Legacy or missing groups configuration
+        const boxWidth = 45;
+        logger.logBoxTitle('UPS Groups', boxWidth);
+        logger.logBoxLine('No groups configured.');
+        logger.logBoxLine('Use "nupst group add" to add a UPS group.');
+        logger.logBoxEnd();
+        return;
+      }
+      
+      // Display group list
+      const boxWidth = 60;
+      logger.logBoxTitle('UPS Groups', boxWidth);
+      
+      if (config.groups.length === 0) {
+        logger.logBoxLine('No UPS groups configured.');
+        logger.logBoxLine('Use "nupst group add" to add a UPS group.');
+      } else {
+        logger.logBoxLine(`Found ${config.groups.length} group(s)`);
+        logger.logBoxLine('');
+        logger.logBoxLine('ID         | Name                 | Mode         | UPS Devices');
+        logger.logBoxLine('-----------+----------------------+--------------+----------------');
+        
+        for (const group of config.groups) {
+          const id = group.id.padEnd(10, ' ').substring(0, 10);
+          const name = (group.name || '').padEnd(20, ' ').substring(0, 20);
+          const mode = (group.mode || 'unknown').padEnd(12, ' ').substring(0, 12);
+          
+          // Count UPS devices in this group
+          const upsInGroup = config.upsDevices.filter(ups => ups.groups.includes(group.id));
+          const upsCount = upsInGroup.length;
+          const upsNames = upsInGroup.map(ups => ups.name).join(', ');
+          
+          logger.logBoxLine(`${id} | ${name} | ${mode} | ${upsCount > 0 ? upsNames : 'None'}`);
+        }
+      }
+      
+      logger.logBoxEnd();
+    } catch (error) {
+      logger.error(`Failed to list UPS groups: ${error.message}`);
+    }
+  }
+  
+  /**
+   * Add a new UPS group
+   */
+  public async add(): Promise<void> {
+    try {
+      // Import readline module for user input
+      const readline = await import('readline');
+
+      const rl = readline.createInterface({
+        input: process.stdin,
+        output: process.stdout,
+      });
+
+      // Helper function to prompt for input
+      const prompt = (question: string): Promise<string> => {
+        return new Promise((resolve) => {
+          rl.question(question, (answer: string) => {
+            resolve(answer);
+          });
+        });
+      };
+
+      try {
+        // Try to load configuration
+        try {
+          await this.nupst.getDaemon().loadConfig();
+        } catch (error) {
+          logger.error('No configuration found. Please run "nupst setup" first to create a configuration.');
+          return;
+        }
+        
+        // Get current configuration
+        const config = this.nupst.getDaemon().getConfig();
+        
+        // Initialize groups array if not exists
+        if (!config.groups) {
+          config.groups = [];
+        }
+        
+        // Check if upsDevices is initialized
+        if (!config.upsDevices) {
+          config.upsDevices = [];
+        }
+        
+        logger.log('\nNUPST Add Group');
+        logger.log('==============\n');
+        logger.log('This will guide you through creating a new UPS group.\n');
+        
+        // Generate a new unique group ID
+        const groupId = helpers.shortId();
+        
+        // Get group name
+        const name = await prompt('Group Name: ');
+        
+        // Get group mode
+        const modeInput = await prompt('Group Mode (redundant/nonRedundant) [redundant]: ');
+        const mode = modeInput.toLowerCase() === 'nonredundant' ? 'nonRedundant' : 'redundant';
+        
+        // Get optional description
+        const description = await prompt('Group Description (optional): ');
+        
+        // Create the new group
+        const newGroup: IGroupConfig = {
+          id: groupId,
+          name: name || `Group-${groupId}`,
+          mode,
+          description: description || undefined
+        };
+        
+        // Add the group to the configuration
+        config.groups.push(newGroup);
+        
+        // Save the configuration
+        await this.nupst.getDaemon().saveConfig(config);
+        
+        // Display summary
+        const boxWidth = 45;
+        logger.logBoxTitle('Group Created', boxWidth);
+        logger.logBoxLine(`ID: ${newGroup.id}`);
+        logger.logBoxLine(`Name: ${newGroup.name}`);
+        logger.logBoxLine(`Mode: ${newGroup.mode}`);
+        if (newGroup.description) {
+          logger.logBoxLine(`Description: ${newGroup.description}`);
+        }
+        logger.logBoxEnd();
+        
+        // Check if there are UPS devices to assign to this group
+        if (config.upsDevices.length > 0) {
+          const assignUps = await prompt('Would you like to assign UPS devices to this group now? (y/N): ');
+          if (assignUps.toLowerCase() === 'y') {
+            await this.assignUpsToGroup(newGroup.id, config, prompt);
+            
+            // Save again after assigning UPS devices
+            await this.nupst.getDaemon().saveConfig(config);
+          }
+        }
+        
+        // Check if service is running and restart it if needed
+        this.nupst.getUpsHandler().restartServiceIfRunning();
+        
+        logger.log('\nGroup setup complete!');
+      } finally {
+        rl.close();
+      }
+    } catch (error) {
+      logger.error(`Add group error: ${error.message}`);
+    }
+  }
+  
+  /**
+   * Edit an existing UPS group
+   * @param groupId ID of the group to edit
+   */
+  public async edit(groupId: string): Promise<void> {
+    try {
+      // Import readline module for user input
+      const readline = await import('readline');
+
+      const rl = readline.createInterface({
+        input: process.stdin,
+        output: process.stdout,
+      });
+
+      // Helper function to prompt for input
+      const prompt = (question: string): Promise<string> => {
+        return new Promise((resolve) => {
+          rl.question(question, (answer: string) => {
+            resolve(answer);
+          });
+        });
+      };
+
+      try {
+        // Try to load configuration
+        try {
+          await this.nupst.getDaemon().loadConfig();
+        } catch (error) {
+          logger.error('No configuration found. Please run "nupst setup" first to create a configuration.');
+          return;
+        }
+        
+        // Get current configuration
+        const config = this.nupst.getDaemon().getConfig();
+        
+        // Check if groups are initialized
+        if (!config.groups || !Array.isArray(config.groups)) {
+          logger.error('No groups configured. Please run "nupst group add" first to create a group.');
+          return;
+        }
+        
+        // Find the group to edit
+        const groupIndex = config.groups.findIndex(group => group.id === groupId);
+        if (groupIndex === -1) {
+          logger.error(`Group with ID "${groupId}" not found.`);
+          return;
+        }
+        
+        const group = config.groups[groupIndex];
+        
+        logger.log(`\nNUPST Edit Group: ${group.name} (${group.id})`);
+        logger.log('==============================================\n');
+        
+        // Edit group name
+        const newName = await prompt(`Group Name [${group.name}]: `);
+        if (newName.trim()) {
+          group.name = newName;
+        }
+        
+        // Edit group mode
+        const currentMode = group.mode || 'redundant';
+        const modeInput = await prompt(`Group Mode (redundant/nonRedundant) [${currentMode}]: `);
+        if (modeInput.trim()) {
+          group.mode = modeInput.toLowerCase() === 'nonredundant' ? 'nonRedundant' : 'redundant';
+        }
+        
+        // Edit description
+        const currentDesc = group.description || '';
+        const newDesc = await prompt(`Group Description [${currentDesc}]: `);
+        if (newDesc.trim() || newDesc === '') {
+          group.description = newDesc.trim() || undefined;
+        }
+        
+        // Update the group in the configuration
+        config.groups[groupIndex] = group;
+        
+        // Save the configuration
+        await this.nupst.getDaemon().saveConfig(config);
+        
+        // Display summary
+        const boxWidth = 45;
+        logger.logBoxTitle('Group Updated', boxWidth);
+        logger.logBoxLine(`ID: ${group.id}`);
+        logger.logBoxLine(`Name: ${group.name}`);
+        logger.logBoxLine(`Mode: ${group.mode}`);
+        if (group.description) {
+          logger.logBoxLine(`Description: ${group.description}`);
+        }
+        logger.logBoxEnd();
+        
+        // Edit UPS assignments if requested
+        const editAssignments = await prompt('Would you like to edit UPS assignments for this group? (y/N): ');
+        if (editAssignments.toLowerCase() === 'y') {
+          await this.assignUpsToGroup(group.id, config, prompt);
+          
+          // Save again after editing assignments
+          await this.nupst.getDaemon().saveConfig(config);
+        }
+        
+        // Check if service is running and restart it if needed
+        this.nupst.getUpsHandler().restartServiceIfRunning();
+        
+        logger.log('\nGroup edit complete!');
+      } finally {
+        rl.close();
+      }
+    } catch (error) {
+      logger.error(`Edit group error: ${error.message}`);
+    }
+  }
+  
+  /**
+   * Delete an existing UPS group
+   * @param groupId ID of the group to delete
+   */
+  public async delete(groupId: string): Promise<void> {
+    try {
+      // Try to load configuration
+      try {
+        await this.nupst.getDaemon().loadConfig();
+      } catch (error) {
+        logger.error('No configuration found. Please run "nupst setup" first to create a configuration.');
+        return;
+      }
+      
+      // Get current configuration
+      const config = this.nupst.getDaemon().getConfig();
+      
+      // Check if groups are initialized
+      if (!config.groups || !Array.isArray(config.groups)) {
+        logger.error('No groups configured.');
+        return;
+      }
+      
+      // Find the group to delete
+      const groupIndex = config.groups.findIndex(group => group.id === groupId);
+      if (groupIndex === -1) {
+        logger.error(`Group with ID "${groupId}" not found.`);
+        return;
+      }
+      
+      const groupToDelete = config.groups[groupIndex];
+      
+      // Get confirmation before deleting
+      const readline = await import('readline');
+      const rl = readline.createInterface({
+        input: process.stdin,
+        output: process.stdout,
+      });
+      
+      const confirm = await new Promise<string>(resolve => {
+        rl.question(`Are you sure you want to delete group "${groupToDelete.name}" (${groupId})? [y/N]: `, answer => {
+          resolve(answer.toLowerCase());
+        });
+      });
+      
+      rl.close();
+      
+      if (confirm !== 'y' && confirm !== 'yes') {
+        logger.log('Deletion cancelled.');
+        return;
+      }
+      
+      // Remove this group from all UPS device group assignments
+      if (config.upsDevices && Array.isArray(config.upsDevices)) {
+        for (const ups of config.upsDevices) {
+          const groupIndex = ups.groups.indexOf(groupId);
+          if (groupIndex !== -1) {
+            ups.groups.splice(groupIndex, 1);
+          }
+        }
+      }
+      
+      // Remove the group from the array
+      config.groups.splice(groupIndex, 1);
+      
+      // Save the configuration
+      await this.nupst.getDaemon().saveConfig(config);
+      
+      logger.log(`Group "${groupToDelete.name}" (${groupId}) has been deleted.`);
+      
+      // Check if service is running and restart it if needed
+      this.nupst.getUpsHandler().restartServiceIfRunning();
+    } catch (error) {
+      logger.error(`Failed to delete group: ${error.message}`);
+    }
+  }
+
+  /**
+   * Assign UPS devices to groups
+   * @param ups UPS configuration to update
+   * @param groups Available groups
+   * @param prompt Function to prompt for user input
+   */
+  public async assignUpsToGroups(
+    ups: any,
+    groups: any[],
+    prompt: (question: string) => Promise<string>
+  ): Promise<void> {
+    // Initialize groups array if it doesn't exist
+    if (!ups.groups) {
+      ups.groups = [];
+    }
+    
+    // Show current group assignments
+    logger.log('\nCurrent Group Assignments:');
+    if (ups.groups && ups.groups.length > 0) {
+      for (const groupId of ups.groups) {
+        const group = groups.find(g => g.id === groupId);
+        if (group) {
+          logger.log(`- ${group.name} (${group.id})`);
+        } else {
+          logger.log(`- Unknown group (${groupId})`);
+        }
+      }
+    } else {
+      logger.log('- None');
+    }
+    
+    // Show available groups
+    logger.log('\nAvailable Groups:');
+    if (groups.length === 0) {
+      logger.log('- No groups available. Use "nupst group add" to create groups.');
+      return;
+    }
+    
+    for (let i = 0; i < groups.length; i++) {
+      const group = groups[i];
+      const assigned = ups.groups && ups.groups.includes(group.id);
+      logger.log(`${i + 1}) ${group.name} (${group.id}) [${assigned ? 'Assigned' : 'Not Assigned'}]`);
+    }
+    
+    // Prompt for group selection
+    const selection = await prompt('\nSelect groups to assign/unassign (comma-separated numbers, or "clear" to remove all): ');
+    
+    if (selection.toLowerCase() === 'clear') {
+      // Clear all group assignments
+      ups.groups = [];
+      logger.log('All group assignments cleared.');
+      return;
+    }
+    
+    if (!selection.trim()) {
+      // No change if empty input
+      return;
+    }
+    
+    // Process selections
+    const selections = selection.split(',').map(s => s.trim());
+    
+    for (const sel of selections) {
+      const index = parseInt(sel, 10) - 1;
+      if (isNaN(index) || index < 0 || index >= groups.length) {
+        logger.error(`Invalid selection: ${sel}`);
+        continue;
+      }
+      
+      const group = groups[index];
+      
+      // Initialize groups array if needed (should already be done above)
+      if (!ups.groups) {
+        ups.groups = [];
+      }
+      
+      // Toggle assignment
+      const groupIndex = ups.groups.indexOf(group.id);
+      if (groupIndex === -1) {
+        // Add to group
+        ups.groups.push(group.id);
+        logger.log(`Added to group: ${group.name} (${group.id})`);
+      } else {
+        // Remove from group
+        ups.groups.splice(groupIndex, 1);
+        logger.log(`Removed from group: ${group.name} (${group.id})`);
+      }
+    }
+  }
+  
+  /**
+   * Assign UPS devices to a specific group
+   * @param groupId Group ID to assign UPS devices to
+   * @param config Full configuration
+   * @param prompt Function to prompt for user input
+   */
+  public async assignUpsToGroup(
+    groupId: string,
+    config: any,
+    prompt: (question: string) => Promise<string>
+  ): Promise<void> {
+    if (!config.upsDevices || config.upsDevices.length === 0) {
+      logger.log('No UPS devices available. Use "nupst add" to add UPS devices.');
+      return;
+    }
+    
+    const group = config.groups.find(g => g.id === groupId);
+    if (!group) {
+      logger.error(`Group with ID "${groupId}" not found.`);
+      return;
+    }
+    
+    // Show current assignments
+    logger.log(`\nUPS devices in group "${group.name}" (${group.id}):`);
+    const upsInGroup = config.upsDevices.filter(ups => ups.groups && ups.groups.includes(groupId));
+    if (upsInGroup.length === 0) {
+      logger.log('- None');
+    } else {
+      for (const ups of upsInGroup) {
+        logger.log(`- ${ups.name} (${ups.id})`);
+      }
+    }
+    
+    // Show all UPS devices
+    logger.log('\nAvailable UPS devices:');
+    for (let i = 0; i < config.upsDevices.length; i++) {
+      const ups = config.upsDevices[i];
+      const assigned = ups.groups && ups.groups.includes(groupId);
+      logger.log(`${i + 1}) ${ups.name} (${ups.id}) [${assigned ? 'Assigned' : 'Not Assigned'}]`);
+    }
+    
+    // Prompt for UPS selection
+    const selection = await prompt('\nSelect UPS devices to assign/unassign (comma-separated numbers, or "clear" to remove all): ');
+    
+    if (selection.toLowerCase() === 'clear') {
+      // Clear all UPS from this group
+      for (const ups of config.upsDevices) {
+        if (ups.groups) {
+          const groupIndex = ups.groups.indexOf(groupId);
+          if (groupIndex !== -1) {
+            ups.groups.splice(groupIndex, 1);
+          }
+        }
+      }
+      logger.log(`All UPS devices removed from group "${group.name}".`);
+      return;
+    }
+    
+    if (!selection.trim()) {
+      // No change if empty input
+      return;
+    }
+    
+    // Process selections
+    const selections = selection.split(',').map(s => s.trim());
+    
+    for (const sel of selections) {
+      const index = parseInt(sel, 10) - 1;
+      if (isNaN(index) || index < 0 || index >= config.upsDevices.length) {
+        logger.error(`Invalid selection: ${sel}`);
+        continue;
+      }
+      
+      const ups = config.upsDevices[index];
+      
+      // Initialize groups array if needed
+      if (!ups.groups) {
+        ups.groups = [];
+      }
+      
+      // Toggle assignment
+      const groupIndex = ups.groups.indexOf(groupId);
+      if (groupIndex === -1) {
+        // Add to group
+        ups.groups.push(groupId);
+        logger.log(`Added "${ups.name}" to group "${group.name}"`);
+      } else {
+        // Remove from group
+        ups.groups.splice(groupIndex, 1);
+        logger.log(`Removed "${ups.name}" from group "${group.name}"`);
+      }
+    }
+  }
+}

ts/cli/service-handler.ts

@@ -0,0 +1,320 @@
+import { execSync } from 'child_process';
+import { Nupst } from '../nupst.js';
+import { logger } from '../logger.js';
+
+/**
+ * Class for handling service-related CLI commands
+ * Provides interface for managing systemd service
+ */
+export class ServiceHandler {
+  private readonly nupst: Nupst;
+
+  /**
+   * Create a new Service handler
+   * @param nupst Reference to the main Nupst instance
+   */
+  constructor(nupst: Nupst) {
+    this.nupst = nupst;
+  }
+
+  /**
+   * Enable the service (requires root)
+   */
+  public async enable(): Promise<void> {
+    this.checkRootAccess('This command must be run as root.');
+    await this.nupst.getSystemd().install();
+    logger.log('NUPST service has been installed. Use "nupst start" to start the service.');
+  }
+
+  /**
+   * Start the daemon directly
+   * @param debugMode Whether to enable debug mode
+   */
+  public async daemonStart(debugMode: boolean = false): Promise<void> {
+    logger.log('Starting NUPST daemon...');
+    try {
+      // Enable debug mode for SNMP if requested
+      if (debugMode) {
+        this.nupst.getSnmp().enableDebug();
+        logger.log('SNMP debug mode enabled');
+      }
+      await this.nupst.getDaemon().start();
+    } catch (error) {
+      // Error is already logged and process.exit is called in daemon.start()
+      // No need to handle it here
+    }
+  }
+
+  /**
+   * Show logs of the systemd service
+   */
+  public async logs(): Promise<void> {
+    try {
+      // Use exec with spawn to properly follow logs in real-time
+      const { spawn } = await import('child_process');
+      logger.log('Tailing nupst service logs (Ctrl+C to exit)...\n');
+
+      const journalctl = spawn('journalctl', ['-u', 'nupst.service', '-n', '50', '-f'], {
+        stdio: ['ignore', 'inherit', 'inherit'],
+      });
+
+      // Forward signals to child process
+      process.on('SIGINT', () => {
+        journalctl.kill('SIGINT');
+        process.exit(0);
+      });
+
+      // Wait for process to exit
+      await new Promise<void>((resolve) => {
+        journalctl.on('exit', () => resolve());
+      });
+    } catch (error) {
+      logger.error(`Failed to retrieve logs: ${error}`);
+      process.exit(1);
+    }
+  }
+
+  /**
+   * Stop the systemd service
+   */
+  public async stop(): Promise<void> {
+    await this.nupst.getSystemd().stop();
+  }
+
+  /**
+   * Start the systemd service
+   */
+  public async start(): Promise<void> {
+    try {
+      await this.nupst.getSystemd().start();
+    } catch (error) {
+      // Error will be displayed by systemd.start()
+      process.exit(1);
+    }
+  }
+
+  /**
+   * Show status of the systemd service and UPS
+   */
+  public async status(): Promise<void> {
+    // Extract debug options from args array
+    const debugOptions = this.extractDebugOptions(process.argv);
+    await this.nupst.getSystemd().getStatus(debugOptions.debugMode);
+  }
+
+  /**
+   * Disable the service (requires root)
+   */
+  public async disable(): Promise<void> {
+    this.checkRootAccess('This command must be run as root.');
+    await this.nupst.getSystemd().disable();
+  }
+
+  /**
+   * Check if the user has root access
+   * @param errorMessage Error message to display if not root
+   */
+  private checkRootAccess(errorMessage: string): void {
+    if (process.getuid && process.getuid() !== 0) {
+      logger.error(errorMessage);
+      process.exit(1);
+    }
+  }
+
+  /**
+   * Update NUPST from repository and refresh systemd service
+   */
+  public async update(): Promise<void> {
+    try {
+      // Check if running as root
+      this.checkRootAccess(
+        'This command must be run as root to update NUPST and refresh the systemd service.'
+      );
+
+      const boxWidth = 45;
+      logger.logBoxTitle('NUPST Update Process', boxWidth);
+      logger.logBoxLine('Updating NUPST from repository...');
+
+      // Determine the installation directory (assuming it's either /opt/nupst or the current directory)
+      const { existsSync } = await import('fs');
+      let installDir = '/opt/nupst';
+
+      if (!existsSync(installDir)) {
+        // If not installed in /opt/nupst, use the current directory
+        const { dirname } = await import('path');
+        installDir = dirname(dirname(process.argv[1])); // Go up two levels from the executable
+        logger.logBoxLine(`Using local installation directory: ${installDir}`);
+      }
+
+      try {
+        // 1. Update the repository
+        logger.logBoxLine('Pulling latest changes from git repository...');
+        execSync(`cd ${installDir} && git fetch origin && git reset --hard origin/main`, {
+          stdio: 'pipe',
+        });
+
+        // 2. Run the install.sh script
+        logger.logBoxLine('Running install.sh to update NUPST...');
+        execSync(`cd ${installDir} && bash ./install.sh`, { stdio: 'pipe' });
+
+        // 3. Run the setup.sh script with force flag to update Node.js and dependencies
+        logger.logBoxLine('Running setup.sh to update Node.js and dependencies...');
+        execSync(`cd ${installDir} && bash ./setup.sh --force`, { stdio: 'pipe' });
+
+        // 4. Refresh the systemd service
+        logger.logBoxLine('Refreshing systemd service...');
+
+        // First check if service exists
+        let serviceExists = false;
+        try {
+          const output = execSync('systemctl list-unit-files | grep nupst.service').toString();
+          serviceExists = output.includes('nupst.service');
+        } catch (error) {
+          // If grep fails (service not found), serviceExists remains false
+          serviceExists = false;
+        }
+
+        if (serviceExists) {
+          // Stop the service if it's running
+          const isRunning =
+            execSync('systemctl is-active nupst.service || true').toString().trim() === 'active';
+          if (isRunning) {
+            logger.logBoxLine('Stopping nupst service...');
+            execSync('systemctl stop nupst.service');
+          }
+
+          // Reinstall the service
+          logger.logBoxLine('Reinstalling systemd service...');
+          await this.nupst.getSystemd().install();
+
+          // Restart the service if it was running
+          if (isRunning) {
+            logger.logBoxLine('Restarting nupst service...');
+            execSync('systemctl start nupst.service');
+          }
+        } else {
+          logger.logBoxLine('Systemd service not installed, skipping service refresh.');
+          logger.logBoxLine('Run "nupst enable" to install the service.');
+        }
+
+        logger.logBoxLine('Update completed successfully!');
+        logger.logBoxEnd();
+      } catch (error) {
+        logger.logBoxLine('Error during update process:');
+        logger.logBoxLine(`${error.message}`);
+        logger.logBoxEnd();
+        process.exit(1);
+      }
+    } catch (error) {
+      logger.error(`Update failed: ${error.message}`);
+      process.exit(1);
+    }
+  }
+
+  /**
+   * Completely uninstall NUPST from the system
+   */
+  public async uninstall(): Promise<void> {
+    // Check if running as root
+    this.checkRootAccess('This command must be run as root.');
+
+    try {
+      // Import readline module for user input
+      const readline = await import('readline');
+
+      const rl = readline.createInterface({
+        input: process.stdin,
+        output: process.stdout,
+      });
+
+      // Helper function to prompt for input
+      const prompt = (question: string): Promise<string> => {
+        return new Promise((resolve) => {
+          rl.question(question, (answer: string) => {
+            resolve(answer);
+          });
+        });
+      };
+
+      console.log('\nNUPST Uninstaller');
+      console.log('===============');
+      console.log('This will completely remove NUPST from your system.\n');
+
+      // Ask about removing configuration
+      const removeConfig = await prompt(
+        'Do you want to remove the NUPST configuration files? (y/N): '
+      );
+
+      // Find the uninstall.sh script location
+      let uninstallScriptPath: string;
+
+      // Try to determine script location based on executable path
+      try {
+        // For ESM, we can use import.meta.url, but since we might be in CJS
+        // we'll use a more reliable approach based on process.argv[1]
+        const binPath = process.argv[1];
+        const { dirname, join } = await import('path');
+        const modulePath = dirname(dirname(binPath));
+        uninstallScriptPath = join(modulePath, 'uninstall.sh');
+
+        // Check if the script exists
+        const { access } = await import('fs/promises');
+        await access(uninstallScriptPath);
+      } catch (error) {
+        // If we can't find it in the expected location, try common installation paths
+        const commonPaths = ['/opt/nupst/uninstall.sh', `${process.cwd()}/uninstall.sh`];
+        const { existsSync } = await import('fs');
+
+        uninstallScriptPath = '';
+        for (const path of commonPaths) {
+          if (existsSync(path)) {
+            uninstallScriptPath = path;
+            break;
+          }
+        }
+
+        if (!uninstallScriptPath) {
+          console.error('Could not locate uninstall.sh script. Aborting uninstall.');
+          rl.close();
+          process.exit(1);
+        }
+      }
+
+      // Close readline before executing script
+      rl.close();
+
+      // Execute uninstall.sh with the appropriate option
+      console.log(`\nRunning uninstaller from ${uninstallScriptPath}...`);
+
+      // Pass the configuration removal option as an environment variable
+      const env = {
+        ...process.env,
+        REMOVE_CONFIG: removeConfig.toLowerCase() === 'y' ? 'yes' : 'no',
+        REMOVE_REPO: 'yes', // Always remove repo as requested
+        NUPST_CLI_CALL: 'true', // Flag to indicate this is being called from CLI
+      };
+
+      // Run the uninstall script with sudo
+      execSync(`sudo bash ${uninstallScriptPath}`, {
+        env,
+        stdio: 'inherit', // Show output in the terminal
+      });
+    } catch (error) {
+      console.error(`Uninstall failed: ${error.message}`);
+      process.exit(1);
+    }
+  }
+
+  /**
+   * Extract and remove debug options from args array
+   * @param args Command line arguments
+   * @returns Object with debug flags and cleaned args
+   */
+  private extractDebugOptions(args: string[]): { debugMode: boolean; cleanedArgs: string[] } {
+    const debugMode = args.includes('--debug') || args.includes('-d');
+    // Remove debug flags from args
+    const cleanedArgs = args.filter((arg) => arg !== '--debug' && arg !== '-d');
+
+    return { debugMode, cleanedArgs };
+  }
+}

ts/cli/ups-handler.ts

@@ -0,0 +1,986 @@
+import { execSync } from 'child_process';
+import { Nupst } from '../nupst.js';
+import { logger } from '../logger.js';
+import * as helpers from '../helpers/index.js';
+
+/**
+ * Class for handling UPS-related CLI commands
+ * Provides interface for managing UPS devices
+ */
+export class UpsHandler {
+  private readonly nupst: Nupst;
+
+  /**
+   * Create a new UPS handler
+   * @param nupst Reference to the main Nupst instance
+   */
+  constructor(nupst: Nupst) {
+    this.nupst = nupst;
+  }
+
+  /**
+   * Add a new UPS configuration
+   */
+  public async add(): Promise<void> {
+    try {
+      // Import readline module for user input
+      const readline = await import('readline');
+
+      const rl = readline.createInterface({
+        input: process.stdin,
+        output: process.stdout,
+      });
+
+      // Helper function to prompt for input
+      const prompt = (question: string): Promise<string> => {
+        return new Promise((resolve) => {
+          rl.question(question, (answer: string) => {
+            resolve(answer);
+          });
+        });
+      };
+
+      try {
+        await this.runAddProcess(prompt);
+      } finally {
+        rl.close();
+      }
+    } catch (error) {
+      logger.error(`Add UPS error: ${error.message}`);
+    }
+  }
+
+  /**
+   * Run the interactive process to add a new UPS
+   * @param prompt Function to prompt for user input
+   */
+  public async runAddProcess(prompt: (question: string) => Promise<string>): Promise<void> {
+    logger.log('\nNUPST Add UPS');
+    logger.log('=============\n');
+    logger.log('This will guide you through configuring a new UPS.\n');
+
+    // Try to load existing config if available
+    let config;
+    try {
+      await this.nupst.getDaemon().loadConfig();
+      config = this.nupst.getDaemon().getConfig();
+      
+      // Convert old format to new format if needed
+      if (!config.upsDevices) {
+        // Initialize with the current config as the first UPS
+        config = {
+          checkInterval: config.checkInterval,
+          upsDevices: [{
+            id: 'default',
+            name: 'Default UPS',
+            snmp: config.snmp,
+            thresholds: config.thresholds,
+            groups: []
+          }],
+          groups: []
+        };
+        logger.log('Converting existing configuration to multi-UPS format.');
+      }
+    } catch (error) {
+      // If config doesn't exist, initialize with empty config
+      config = {
+        checkInterval: 30000, // Default check interval
+        upsDevices: [],
+        groups: []
+      };
+      logger.log('No existing configuration found. Creating a new configuration.');
+    }
+
+    // Get UPS ID and name
+    const upsId = helpers.shortId();
+    const name = await prompt('UPS Name: ');
+
+    // Create a new UPS configuration object with defaults
+    const newUps = {
+      id: upsId,
+      name: name || `UPS-${upsId}`,
+      snmp: {
+        host: '127.0.0.1',
+        port: 161,
+        community: 'public',
+        version: 1,
+        timeout: 5000,
+        upsModel: 'cyberpower'
+      },
+      thresholds: {
+        battery: 60,
+        runtime: 20
+      },
+      groups: []
+    };
+
+    // 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);
+
+    // Get access to GroupHandler for group assignments
+    const groupHandler = this.nupst.getGroupHandler();
+
+    // Assign to groups if any exist
+    if (config.groups && config.groups.length > 0) {
+      await groupHandler.assignUpsToGroups(newUps, config.groups, prompt);
+    }
+
+    // Add the new UPS to the config
+    config.upsDevices.push(newUps);
+
+    // Save the configuration
+    await this.nupst.getDaemon().saveConfig(config);
+
+    this.displayUpsConfigSummary(newUps);
+
+    // Test the connection if requested
+    await this.optionallyTestConnection(newUps.snmp, prompt);
+    
+    // Check if service is running and restart it if needed
+    await this.restartServiceIfRunning();
+    
+    logger.log('\nSetup complete!');
+  }
+
+  /**
+   * Edit an existing UPS configuration
+   * @param upsId ID of the UPS to edit (undefined for default UPS)
+   */
+  public async edit(upsId?: string): Promise<void> {
+    try {
+      // Import readline module for user input
+      const readline = await import('readline');
+
+      const rl = readline.createInterface({
+        input: process.stdin,
+        output: process.stdout,
+      });
+
+      // Helper function to prompt for input
+      const prompt = (question: string): Promise<string> => {
+        return new Promise((resolve) => {
+          rl.question(question, (answer: string) => {
+            resolve(answer);
+          });
+        });
+      };
+
+      try {
+        await this.runEditProcess(upsId, prompt);
+      } finally {
+        rl.close();
+      }
+    } catch (error) {
+      logger.error(`Edit UPS error: ${error.message}`);
+    }
+  }
+
+  /**
+   * Run the interactive process to edit a UPS
+   * @param upsId ID of the UPS to edit (undefined for default UPS)
+   * @param prompt Function to prompt for user input
+   */
+  public async runEditProcess(upsId: string | undefined, prompt: (question: string) => Promise<string>): Promise<void> {
+    logger.log('\nNUPST Edit UPS');
+    logger.log('=============\n');
+    
+    // Try to load existing config
+    try {
+      await this.nupst.getDaemon().loadConfig();
+    } catch (error) {
+      if (!upsId) {
+        // For default UPS (no ID specified), run setup if no config exists
+        logger.log('No existing configuration found. Running setup for new UPS.');
+        await this.runAddProcess(prompt);
+        return;
+      } else {
+        // For specific UPS ID, error if config doesn't exist
+        logger.error('No configuration found. Please run "nupst setup" first.');
+        return;
+      }
+    }
+    
+    // Get the config
+    const config = this.nupst.getDaemon().getConfig();
+    
+    // Convert old format to new format if needed
+    if (!config.upsDevices) {
+      // Initialize with the current config as the first UPS
+      config.upsDevices = [{
+        id: 'default',
+        name: 'Default UPS',
+        snmp: config.snmp,
+        thresholds: config.thresholds,
+        groups: []
+      }];
+      config.groups = [];
+      logger.log('Converting existing configuration to multi-UPS format.');
+    }
+    
+    // Find the UPS to edit
+    let upsToEdit;
+    if (upsId) {
+      // Find specific UPS by ID
+      upsToEdit = config.upsDevices.find(ups => ups.id === upsId);
+      if (!upsToEdit) {
+        logger.error(`UPS with ID "${upsId}" not found.`);
+        return;
+      }
+      logger.log(`Editing UPS: ${upsToEdit.name} (${upsToEdit.id})\n`);
+    } else {
+      // For backward compatibility, edit the first UPS if no ID specified
+      if (config.upsDevices.length === 0) {
+        logger.error('No UPS devices configured. Please run "nupst add" to add a UPS.');
+        return;
+      }
+      upsToEdit = config.upsDevices[0];
+      logger.log(`Editing default UPS: ${upsToEdit.name} (${upsToEdit.id})\n`);
+    }
+    
+    // Allow editing UPS name
+    const newName = await prompt(`UPS Name [${upsToEdit.name}]: `);
+    if (newName.trim()) {
+      upsToEdit.name = newName;
+    }
+    
+    // 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);
+    
+    // Get access to GroupHandler for group assignments
+    const groupHandler = this.nupst.getGroupHandler();
+    
+    // Edit group assignments
+    if (config.groups && config.groups.length > 0) {
+      await groupHandler.assignUpsToGroups(upsToEdit, config.groups, prompt);
+    }
+    
+    // Save the configuration
+    await this.nupst.getDaemon().saveConfig(config);
+    
+    this.displayUpsConfigSummary(upsToEdit);
+    
+    // Test the connection if requested
+    await this.optionallyTestConnection(upsToEdit.snmp, prompt);
+    
+    // Check if service is running and restart it if needed
+    await this.restartServiceIfRunning();
+    
+    logger.log('\nEdit complete!');
+  }
+
+  /**
+   * Delete a UPS by ID
+   * @param upsId ID of the UPS to delete
+   */
+  public async delete(upsId: string): Promise<void> {
+    try {
+      // Try to load configuration
+      try {
+        await this.nupst.getDaemon().loadConfig();
+      } catch (error) {
+        const errorBoxWidth = 45;
+        logger.logBoxTitle('Configuration Error', errorBoxWidth);
+        logger.logBoxLine('No configuration found.');
+        logger.logBoxLine("Please run 'nupst setup' first to create a configuration.");
+        logger.logBoxEnd();
+        return;
+      }
+      
+      // Get current configuration
+      const config = this.nupst.getDaemon().getConfig();
+      
+      // Check if multi-UPS config
+      if (!config.upsDevices || !Array.isArray(config.upsDevices)) {
+        logger.error('Legacy single-UPS configuration detected. Cannot delete UPS.');
+        logger.log('Use "nupst add" to migrate to multi-UPS configuration format first.');
+        return;
+      }
+      
+      // Find the UPS to delete
+      const upsIndex = config.upsDevices.findIndex(ups => ups.id === upsId);
+      if (upsIndex === -1) {
+        logger.error(`UPS with ID "${upsId}" not found.`);
+        return;
+      }
+      
+      const upsToDelete = config.upsDevices[upsIndex];
+      
+      // Get confirmation before deleting
+      const readline = await import('readline');
+      const rl = readline.createInterface({
+        input: process.stdin,
+        output: process.stdout,
+      });
+      
+      const confirm = await new Promise<string>(resolve => {
+        rl.question(`Are you sure you want to delete UPS "${upsToDelete.name}" (${upsId})? [y/N]: `, answer => {
+          resolve(answer.toLowerCase());
+        });
+      });
+      
+      rl.close();
+      
+      if (confirm !== 'y' && confirm !== 'yes') {
+        logger.log('Deletion cancelled.');
+        return;
+      }
+      
+      // Remove the UPS from the array
+      config.upsDevices.splice(upsIndex, 1);
+      
+      // Save the configuration
+      await this.nupst.getDaemon().saveConfig(config);
+      
+      logger.log(`UPS "${upsToDelete.name}" (${upsId}) has been deleted.`);
+      
+      // Check if service is running and restart it if needed
+      await this.restartServiceIfRunning();
+    } catch (error) {
+      logger.error(`Failed to delete UPS: ${error.message}`);
+    }
+  }
+
+  /**
+   * List all configured UPS devices
+   */
+  public async list(): Promise<void> {
+    try {
+      // Try to load configuration
+      try {
+        await this.nupst.getDaemon().loadConfig();
+      } catch (error) {
+        const errorBoxWidth = 45;
+        logger.logBoxTitle('Configuration Error', errorBoxWidth);
+        logger.logBoxLine('No configuration found.');
+        logger.logBoxLine("Please run 'nupst setup' first to create a configuration.");
+        logger.logBoxEnd();
+        return;
+      }
+      
+      // Get current configuration
+      const config = this.nupst.getDaemon().getConfig();
+      
+      // Check if multi-UPS config
+      if (!config.upsDevices || !Array.isArray(config.upsDevices)) {
+        // Legacy single UPS configuration
+        const boxWidth = 45;
+        logger.logBoxTitle('UPS Devices', boxWidth);
+        logger.logBoxLine('Legacy single-UPS configuration detected.');
+        logger.logBoxLine('');
+        logger.logBoxLine('Default UPS:');
+        logger.logBoxLine(`  Host: ${config.snmp.host}:${config.snmp.port}`);
+        logger.logBoxLine(`  Model: ${config.snmp.upsModel || 'cyberpower'}`);
+        logger.logBoxLine(`  Thresholds: ${config.thresholds.battery}% battery, ${config.thresholds.runtime} min runtime`);
+        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
+      const boxWidth = 60;
+      logger.logBoxTitle('UPS Devices', boxWidth);
+      
+      if (config.upsDevices.length === 0) {
+        logger.logBoxLine('No UPS devices configured.');
+        logger.logBoxLine('Use "nupst add" to add a UPS device.');
+      } else {
+        logger.logBoxLine(`Found ${config.upsDevices.length} UPS device(s)`);
+        logger.logBoxLine('');
+        logger.logBoxLine('ID         | Name                 | Host            | Mode         | Groups');
+        logger.logBoxLine('-----------+----------------------+-----------------+--------------+----------------');
+        
+        for (const ups of config.upsDevices) {
+          const id = ups.id.padEnd(10, ' ').substring(0, 10);
+          const name = (ups.name || '').padEnd(20, ' ').substring(0, 20);
+          const host = `${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();
+    } catch (error) {
+      logger.error(`Failed to list UPS devices: ${error.message}`);
+    }
+  }
+
+  /**
+   * Test the current configuration by connecting to the UPS
+   * @param debugMode Whether to enable debug mode
+   */
+  public async test(debugMode: boolean = false): Promise<void> {
+    try {
+      // Debug mode is now handled in parseAndExecute
+      if (debugMode) {
+        const boxWidth = 45;
+        logger.logBoxTitle('Debug Mode', boxWidth);
+        logger.logBoxLine('SNMP debugging enabled - detailed logs will be shown');
+        logger.logBoxEnd();
+      }
+
+      // Try to load the configuration
+      try {
+        await this.nupst.getDaemon().loadConfig();
+      } catch (error) {
+        const errorBoxWidth = 45;
+        logger.logBoxTitle('Configuration Error', errorBoxWidth);
+        logger.logBoxLine('No configuration found.');
+        logger.logBoxLine("Please run 'nupst setup' first to create a configuration.");
+        logger.logBoxEnd();
+        return;
+      }
+
+      // Get current configuration
+      const config = this.nupst.getDaemon().getConfig();
+
+      // Handle new multi-UPS configuration format
+      if (config.upsDevices && config.upsDevices.length > 0) {
+        logger.log(`Found ${config.upsDevices.length} UPS devices in configuration.`);
+        
+        for (let i = 0; i < config.upsDevices.length; i++) {
+          const ups = config.upsDevices[i];
+          logger.log(`\nTesting UPS: ${ups.name} (${ups.id})`);
+          this.displayTestConfig(ups);
+          await this.testConnection(ups);
+        }
+      } else {
+        // Legacy configuration format
+        this.displayTestConfig(config);
+        await this.testConnection(config);
+      }
+    } catch (error) {
+      logger.error(`Test failed: ${error.message}`);
+    }
+  }
+
+  /**
+   * Display the configuration for testing
+   * @param config Current configuration or individual UPS configuration
+   */
+  private displayTestConfig(config: any): void {
+    // Check if this is a UPS device or full configuration
+    const isUpsConfig = config.snmp && config.thresholds;
+    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
+    const upsName = config.name ? config.name : 'Default UPS';
+    const upsId = config.id ? config.id : 'default';
+    
+    const boxWidth = 45;
+    logger.logBoxTitle(`Testing Configuration: ${upsName}`, boxWidth);
+    logger.logBoxLine(`UPS ID: ${upsId}`);
+    logger.logBoxLine('SNMP Settings:');
+    logger.logBoxLine(`  Host: ${snmpConfig.host}`);
+    logger.logBoxLine(`  Port: ${snmpConfig.port}`);
+    logger.logBoxLine(`  Version: ${snmpConfig.version}`);
+    logger.logBoxLine(`  UPS Model: ${snmpConfig.upsModel || 'cyberpower'}`);
+
+    if (snmpConfig.version === 1 || snmpConfig.version === 2) {
+      logger.logBoxLine(`  Community: ${snmpConfig.community}`);
+    } else if (snmpConfig.version === 3) {
+      logger.logBoxLine(`  Security Level: ${snmpConfig.securityLevel}`);
+      logger.logBoxLine(`  Username: ${snmpConfig.username}`);
+
+      // Show auth and privacy details based on security level
+      if (snmpConfig.securityLevel === 'authNoPriv' || snmpConfig.securityLevel === 'authPriv') {
+        logger.logBoxLine(`  Auth Protocol: ${snmpConfig.authProtocol || 'None'}`);
+      }
+
+      if (snmpConfig.securityLevel === 'authPriv') {
+        logger.logBoxLine(`  Privacy Protocol: ${snmpConfig.privProtocol || 'None'}`);
+      }
+
+      // Show timeout value
+      logger.logBoxLine(`  Timeout: ${snmpConfig.timeout / 1000} seconds`);
+    }
+
+    // Show OIDs if custom model is selected
+    if (snmpConfig.upsModel === 'custom' && snmpConfig.customOIDs) {
+      logger.logBoxLine('Custom OIDs:');
+      logger.logBoxLine(`  Power Status: ${snmpConfig.customOIDs.POWER_STATUS || 'Not set'}`);
+      logger.logBoxLine(`  Battery Capacity: ${snmpConfig.customOIDs.BATTERY_CAPACITY || 'Not set'}`);
+      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(`Group Assignments: ${config.groups.length === 0 ? 'None' : config.groups.join(', ')}`);
+    }
+    
+    logger.logBoxLine(`Check Interval: ${checkInterval / 1000} seconds`);
+    logger.logBoxEnd();
+  }
+
+  /**
+   * Test connection to the UPS
+   * @param config Current UPS configuration or legacy config
+   */
+  private async testConnection(config: any): Promise<void> {
+    const upsId = config.id || 'default';
+    const upsName = config.name || 'Default UPS';
+    logger.log(`\nTesting connection to UPS: ${upsName} (${upsId})...`);
+    
+    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,
+        timeout: Math.min(snmpConfig.timeout, 10000), // Use at most 10 seconds for testing
+      };
+
+      const status = await this.nupst.getSnmp().getUpsStatus(testConfig);
+
+      const boxWidth = 45;
+      logger.logBoxTitle(`Connection Successful: ${upsName}`, boxWidth);
+      logger.logBoxLine('UPS Status:');
+      logger.logBoxLine(`  Power Status: ${status.powerStatus}`);
+      logger.logBoxLine(`  Battery Capacity: ${status.batteryCapacity}%`);
+      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);
+      logger.logBoxLine(`Error: ${error.message}`);
+      logger.logBoxEnd();
+      logger.log("\nPlease check your settings and run 'nupst edit' to reconfigure this UPS.");
+    }
+  }
+
+  /**
+   * Analyze UPS status against thresholds
+   * @param status UPS status
+   * @param thresholds Threshold configuration
+   */
+  private analyzeThresholds(status: any, thresholds: any): void {
+    const boxWidth = 45;
+    logger.logBoxTitle('Threshold Analysis', boxWidth);
+
+    if (status.batteryCapacity < thresholds.battery) {
+      logger.logBoxLine('⚠️ WARNING: Battery capacity below threshold');
+      logger.logBoxLine(
+        `  Current: ${status.batteryCapacity}% | Threshold: ${thresholds.battery}%`
+      );
+      logger.logBoxLine('  System would initiate shutdown');
+    } else {
+      logger.logBoxLine('✓ Battery capacity above threshold');
+      logger.logBoxLine(
+        `  Current: ${status.batteryCapacity}% | Threshold: ${thresholds.battery}%`
+      );
+    }
+
+    if (status.batteryRuntime < thresholds.runtime) {
+      logger.logBoxLine('⚠️ WARNING: Runtime below threshold');
+      logger.logBoxLine(
+        `  Current: ${status.batteryRuntime} min | Threshold: ${thresholds.runtime} min`
+      );
+      logger.logBoxLine('  System would initiate shutdown');
+    } else {
+      logger.logBoxLine('✓ Runtime above threshold');
+      logger.logBoxLine(
+        `  Current: ${status.batteryRuntime} min | Threshold: ${thresholds.runtime} min`
+      );
+    }
+
+    logger.logBoxEnd();
+  }
+
+  /**
+   * Gather SNMP settings
+   * @param snmpConfig SNMP configuration object to update
+   * @param prompt Function to prompt for user input
+   */
+  private async gatherSnmpSettings(
+    snmpConfig: any,
+    prompt: (question: string) => Promise<string>
+  ): Promise<void> {
+    // SNMP IP Address
+    const defaultHost = snmpConfig.host || '127.0.0.1';
+    const host = await prompt(`UPS IP Address [${defaultHost}]: `);
+    snmpConfig.host = host.trim() || defaultHost;
+
+    // SNMP Port
+    const defaultPort = snmpConfig.port || 161;
+    const portInput = await prompt(`SNMP Port [${defaultPort}]: `);
+    const port = parseInt(portInput, 10);
+    snmpConfig.port = portInput.trim() && !isNaN(port) ? port : defaultPort;
+
+    // SNMP Version
+    const defaultVersion = snmpConfig.version || 1;
+    console.log('\nSNMP Version:');
+    console.log('  1) SNMPv1');
+    console.log('  2) SNMPv2c');
+    console.log('  3) SNMPv3 (with security features)');
+    const versionInput = await prompt(`Select SNMP version [${defaultVersion}]: `);
+    const version = parseInt(versionInput, 10);
+    snmpConfig.version =
+      versionInput.trim() && (version === 1 || version === 2 || version === 3)
+        ? version
+        : defaultVersion;
+
+    if (snmpConfig.version === 1 || snmpConfig.version === 2) {
+      // SNMP Community String (for v1/v2c)
+      const defaultCommunity = snmpConfig.community || 'public';
+      const community = await prompt(`SNMP Community String [${defaultCommunity}]: `);
+      snmpConfig.community = community.trim() || defaultCommunity;
+    } else if (snmpConfig.version === 3) {
+      // SNMP v3 settings
+      await this.gatherSnmpV3Settings(snmpConfig, prompt);
+    }
+  }
+
+  /**
+   * Gather SNMPv3 specific settings
+   * @param snmpConfig SNMP configuration object to update
+   * @param prompt Function to prompt for user input
+   */
+  private async gatherSnmpV3Settings(
+    snmpConfig: any,
+    prompt: (question: string) => Promise<string>
+  ): Promise<void> {
+    console.log('\nSNMPv3 Security Settings:');
+
+    // Security Level
+    console.log('\nSecurity Level:');
+    console.log('  1) noAuthNoPriv (No Authentication, No Privacy)');
+    console.log('  2) authNoPriv (Authentication, No Privacy)');
+    console.log('  3) authPriv (Authentication and Privacy)');
+    const defaultSecLevel = snmpConfig.securityLevel
+      ? snmpConfig.securityLevel === 'noAuthNoPriv'
+        ? 1
+        : snmpConfig.securityLevel === 'authNoPriv'
+        ? 2
+        : 3
+      : 3;
+    const secLevelInput = await prompt(`Select Security Level [${defaultSecLevel}]: `);
+    const secLevel = parseInt(secLevelInput, 10) || defaultSecLevel;
+
+    if (secLevel === 1) {
+      snmpConfig.securityLevel = 'noAuthNoPriv';
+      // No auth, no priv - clear out authentication and privacy settings
+      snmpConfig.authProtocol = '';
+      snmpConfig.authKey = '';
+      snmpConfig.privProtocol = '';
+      snmpConfig.privKey = '';
+      // Set appropriate timeout for security level
+      snmpConfig.timeout = 5000; // 5 seconds for basic security
+    } else if (secLevel === 2) {
+      snmpConfig.securityLevel = 'authNoPriv';
+      // Auth, no priv - clear out privacy settings
+      snmpConfig.privProtocol = '';
+      snmpConfig.privKey = '';
+      // Set appropriate timeout for security level
+      snmpConfig.timeout = 10000; // 10 seconds for authentication
+    } else {
+      snmpConfig.securityLevel = 'authPriv';
+      // Set appropriate timeout for security level
+      snmpConfig.timeout = 15000; // 15 seconds for full encryption
+    }
+
+    // Username
+    const defaultUsername = snmpConfig.username || '';
+    const username = await prompt(`SNMPv3 Username [${defaultUsername}]: `);
+    snmpConfig.username = username.trim() || defaultUsername;
+
+    if (secLevel >= 2) {
+      // Authentication settings
+      await this.gatherAuthenticationSettings(snmpConfig, prompt);
+
+      if (secLevel === 3) {
+        // Privacy settings
+        await this.gatherPrivacySettings(snmpConfig, prompt);
+      }
+
+      // Allow customizing the timeout value
+      const defaultTimeout = snmpConfig.timeout / 1000; // Convert from ms to seconds for display
+      console.log(
+        '\nSNMPv3 operations with authentication and privacy may require longer timeouts.'
+      );
+      const timeoutInput = await prompt(`SNMP Timeout in seconds [${defaultTimeout}]: `);
+      const timeout = parseInt(timeoutInput, 10);
+      if (timeoutInput.trim() && !isNaN(timeout)) {
+        snmpConfig.timeout = timeout * 1000; // Convert to ms
+      }
+    }
+  }
+
+  /**
+   * Gather authentication settings for SNMPv3
+   * @param snmpConfig SNMP configuration object to update
+   * @param prompt Function to prompt for user input
+   */
+  private async gatherAuthenticationSettings(
+    snmpConfig: any,
+    prompt: (question: string) => Promise<string>
+  ): Promise<void> {
+    // Authentication protocol
+    console.log('\nAuthentication Protocol:');
+    console.log('  1) MD5');
+    console.log('  2) SHA');
+    const defaultAuthProtocol = snmpConfig.authProtocol === 'SHA' ? 2 : 1;
+    const authProtocolInput = await prompt(
+      `Select Authentication Protocol [${defaultAuthProtocol}]: `
+    );
+    const authProtocol = parseInt(authProtocolInput, 10) || defaultAuthProtocol;
+    snmpConfig.authProtocol = authProtocol === 2 ? 'SHA' : 'MD5';
+
+    // Authentication Key/Password
+    const defaultAuthKey = snmpConfig.authKey || '';
+    const authKey = await prompt(`Authentication Password ${defaultAuthKey ? '[*****]' : ''}: `);
+    snmpConfig.authKey = authKey.trim() || defaultAuthKey;
+  }
+
+  /**
+   * Gather privacy settings for SNMPv3
+   * @param snmpConfig SNMP configuration object to update
+   * @param prompt Function to prompt for user input
+   */
+  private async gatherPrivacySettings(
+    snmpConfig: any,
+    prompt: (question: string) => Promise<string>
+  ): Promise<void> {
+    // Privacy protocol
+    console.log('\nPrivacy Protocol:');
+    console.log('  1) DES');
+    console.log('  2) AES');
+    const defaultPrivProtocol = snmpConfig.privProtocol === 'AES' ? 2 : 1;
+    const privProtocolInput = await prompt(`Select Privacy Protocol [${defaultPrivProtocol}]: `);
+    const privProtocol = parseInt(privProtocolInput, 10) || defaultPrivProtocol;
+    snmpConfig.privProtocol = privProtocol === 2 ? 'AES' : 'DES';
+
+    // Privacy Key/Password
+    const defaultPrivKey = snmpConfig.privKey || '';
+    const privKey = await prompt(`Privacy Password ${defaultPrivKey ? '[*****]' : ''}: `);
+    snmpConfig.privKey = privKey.trim() || defaultPrivKey;
+  }
+
+  /**
+   * Gather threshold settings
+   * @param thresholds Thresholds configuration object to update
+   * @param prompt Function to prompt for user input
+   */
+  private async gatherThresholdSettings(
+    thresholds: any,
+    prompt: (question: string) => Promise<string>
+  ): Promise<void> {
+    console.log('\nShutdown Thresholds:');
+
+    // Battery threshold
+    const defaultBatteryThreshold = thresholds.battery || 60;
+    const batteryThresholdInput = await prompt(
+      `Battery percentage threshold [${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 [${defaultRuntimeThreshold} minutes]: `
+    );
+    const runtimeThreshold = parseInt(runtimeThresholdInput, 10);
+    thresholds.runtime =
+      runtimeThresholdInput.trim() && !isNaN(runtimeThreshold)
+        ? runtimeThreshold
+        : defaultRuntimeThreshold;
+  }
+
+  /**
+   * Gather UPS model settings
+   * @param snmpConfig SNMP configuration object to update
+   * @param prompt Function to prompt for user input
+   */
+  private async gatherUpsModelSettings(
+    snmpConfig: any,
+    prompt: (question: string) => Promise<string>
+  ): Promise<void> {
+    console.log('\nUPS Model Selection:');
+    console.log('  1) CyberPower');
+    console.log('  2) APC');
+    console.log('  3) Eaton');
+    console.log('  4) TrippLite');
+    console.log('  5) Liebert/Vertiv');
+    console.log('  6) Custom (Advanced)');
+
+    const defaultModelValue =
+      snmpConfig.upsModel === 'cyberpower'
+        ? 1
+        : snmpConfig.upsModel === 'apc'
+        ? 2
+        : snmpConfig.upsModel === 'eaton'
+        ? 3
+        : snmpConfig.upsModel === 'tripplite'
+        ? 4
+        : snmpConfig.upsModel === 'liebert'
+        ? 5
+        : snmpConfig.upsModel === 'custom'
+        ? 6
+        : 1;
+
+    const modelInput = await prompt(`Select UPS model [${defaultModelValue}]: `);
+    const modelValue = parseInt(modelInput, 10) || defaultModelValue;
+
+    if (modelValue === 1) {
+      snmpConfig.upsModel = 'cyberpower';
+    } else if (modelValue === 2) {
+      snmpConfig.upsModel = 'apc';
+    } else if (modelValue === 3) {
+      snmpConfig.upsModel = 'eaton';
+    } else if (modelValue === 4) {
+      snmpConfig.upsModel = 'tripplite';
+    } else if (modelValue === 5) {
+      snmpConfig.upsModel = 'liebert';
+    } else if (modelValue === 6) {
+      snmpConfig.upsModel = 'custom';
+      console.log('\nEnter custom OIDs for your UPS:');
+      console.log('(Leave blank to use standard RFC 1628 OIDs as fallback)');
+
+      // Custom OIDs
+      const powerStatusOID = await prompt('Power Status OID: ');
+      const batteryCapacityOID = await prompt('Battery Capacity OID: ');
+      const batteryRuntimeOID = await prompt('Battery Runtime OID: ');
+
+      // Create custom OIDs object
+      snmpConfig.customOIDs = {
+        POWER_STATUS: powerStatusOID.trim(),
+        BATTERY_CAPACITY: batteryCapacityOID.trim(),
+        BATTERY_RUNTIME: batteryRuntimeOID.trim(),
+      };
+    }
+  }
+
+  /**
+   * Display UPS configuration summary
+   * @param ups UPS configuration
+   */
+  private displayUpsConfigSummary(ups: any): void {
+    const boxWidth = 45;
+    logger.log('');
+    logger.logBoxTitle(`UPS Configuration: ${ups.name}`, boxWidth);
+    logger.logBoxLine(`UPS ID: ${ups.id}`);
+    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 {
+      logger.logBoxLine('Groups: None');
+    }
+    logger.logBoxEnd();
+    logger.log('');
+  }
+
+  /**
+   * Optionally test connection to UPS
+   * @param snmpConfig SNMP configuration to test
+   * @param prompt Function to prompt for user input
+   */
+  private async optionallyTestConnection(
+    snmpConfig: any,
+    prompt: (question: string) => Promise<string>
+  ): Promise<void> {
+    const testConnection = await prompt(
+      'Would you like to test the connection to your UPS? (y/N): '
+    );
+    if (testConnection.toLowerCase() === 'y') {
+      logger.log('\nTesting connection to UPS...');
+      try {
+        // Create a test config with a short timeout
+        const testConfig = {
+          ...snmpConfig,
+          timeout: Math.min(snmpConfig.timeout, 10000), // Use at most 10 seconds for testing
+        };
+
+        const status = await this.nupst.getSnmp().getUpsStatus(testConfig);
+        const boxWidth = 45;
+        logger.log('');
+        logger.logBoxTitle('Connection Successful!', boxWidth);
+        logger.logBoxLine('UPS Status:');
+        logger.logBoxLine(`✓ Power Status: ${status.powerStatus}`);
+        logger.logBoxLine(`✓ Battery Capacity: ${status.batteryCapacity}%`);
+        logger.logBoxLine(`✓ Runtime Remaining: ${status.batteryRuntime} minutes`);
+        logger.logBoxEnd();
+      } catch (error) {
+        const errorBoxWidth = 45;
+        logger.log('');
+        logger.logBoxTitle('Connection Failed!', errorBoxWidth);
+        logger.logBoxLine(`Error: ${error.message}`);
+        logger.logBoxEnd();
+        logger.log('\nPlease check your settings and try again.');
+      }
+    }
+  }
+
+  /**
+   * Check if the systemd service is running and restart it if it is
+   * This is useful after configuration changes
+   */
+  public async restartServiceIfRunning(): Promise<void> {
+    try {
+      // Check if the service is active
+      const isActive =
+        execSync('systemctl is-active nupst.service || true').toString().trim() === 'active';
+
+      if (isActive) {
+        // Service is running, restart it
+        const boxWidth = 45;
+        logger.logBoxTitle('Service Update', boxWidth);
+        logger.logBoxLine('Configuration has changed.');
+        logger.logBoxLine('Restarting NUPST service to apply changes...');
+
+        try {
+          if (process.getuid && process.getuid() === 0) {
+            // We have root access, restart directly
+            execSync('systemctl restart nupst.service');
+            logger.logBoxLine('Service restarted successfully.');
+          } else {
+            // No root access, show instructions
+            logger.logBoxLine('Please restart the service with:');
+            logger.logBoxLine('  sudo systemctl restart nupst.service');
+          }
+        } catch (error) {
+          logger.logBoxLine(`Error restarting service: ${error.message}`);
+          logger.logBoxLine('You may need to restart the service manually:');
+          logger.logBoxLine('  sudo systemctl restart nupst.service');
+        }
+
+        logger.logBoxEnd();
+      }
+    } catch (error) {
+      // Ignore errors checking service status
+    }
+  }
+}

ts/daemon.ts

@@ -4,14 +4,19 @@ import { exec, execFile } from 'child_process';
 import { promisify } from 'util';
 import { NupstSnmp } from './snmp/manager.js';
 import type { ISnmpConfig } from './snmp/types.js';
+import { logger } from './logger.js';
 
 const execAsync = promisify(exec);
 const execFileAsync = promisify(execFile);
 
 /**
- * Configuration interface for the daemon
+ * UPS configuration interface
  */
-export interface INupstConfig {
+export interface IUpsConfig {
+  /** Unique ID for the UPS */
+  id: string;
+  /** Friendly name for the UPS */
+  name: string;
   /** SNMP configuration settings */
   snmp: ISnmpConfig;
   /** Threshold settings for initiating shutdown */
@@ -21,8 +26,58 @@ export interface INupstConfig {
     /** Shutdown when runtime below this minutes */
     runtime: number;
   };
+  /** Group IDs this UPS belongs to */
+  groups: string[];
+}
+
+/**
+ * Group configuration interface
+ */
+export interface IGroupConfig {
+  /** Unique ID for the group */
+  id: string;
+  /** Friendly name for the group */
+  name: string;
+  /** Group operation mode */
+  mode: 'redundant' | 'nonRedundant';
+  /** Optional description */
+  description?: string;
+}
+
+/**
+ * Configuration interface for the daemon
+ */
+export interface INupstConfig {
+  /** UPS devices configuration */
+  upsDevices: IUpsConfig[];
+  /** Groups configuration */
+  groups: IGroupConfig[];
   /** Check interval in milliseconds */
   checkInterval: number;
+  
+  // Legacy fields for backward compatibility
+  /** SNMP configuration settings (legacy) */
+  snmp?: ISnmpConfig;
+  /** Threshold settings (legacy) */
+  thresholds?: {
+    /** Shutdown when battery below this percentage */
+    battery: number;
+    /** Shutdown when runtime below this minutes */
+    runtime: number;
+  };
+}
+
+/**
+ * UPS status tracking interface
+ */
+interface IUpsStatus {
+  id: string;
+  name: string;
+  powerStatus: 'online' | 'onBattery' | 'unknown';
+  batteryCapacity: number;
+  batteryRuntime: number;
+  lastStatusChange: number;
+  lastCheckTime: number;
 }
 
 /**
@@ -35,6 +90,10 @@ export class NupstDaemon {
 
   /** Default configuration */
   private readonly DEFAULT_CONFIG: INupstConfig = {
+    upsDevices: [
+      {
+        id: 'default',
+        name: 'Default UPS',
         snmp: {
           host: '127.0.0.1',
           port: 161,
@@ -55,12 +114,17 @@ export class NupstDaemon {
           battery: 60, // Shutdown when battery below 60%
           runtime: 20, // Shutdown when runtime below 20 minutes
         },
+        groups: []
+      }
+    ],
+    groups: [],
     checkInterval: 30000, // Check every 30 seconds
   };
 
   private config: INupstConfig;
   private snmp: NupstSnmp;
   private isRunning: boolean = false;
+  private upsStatus: Map<string, IUpsStatus> = new Map();
   
   /**
    * Create a new daemon instance with the given SNMP manager
@@ -86,10 +150,36 @@ export class NupstDaemon {
       
       // Read and parse config
       const configData = fs.readFileSync(this.CONFIG_PATH, 'utf8');
-      this.config = JSON.parse(configData);
+      const parsedConfig = JSON.parse(configData);
+      
+      // Handle legacy configuration format
+      if (!parsedConfig.upsDevices && parsedConfig.snmp) {
+        // Convert legacy format to new format
+        this.config = {
+          upsDevices: [
+            {
+              id: 'default',
+              name: 'Default UPS',
+              snmp: parsedConfig.snmp,
+              thresholds: parsedConfig.thresholds,
+              groups: []
+            }
+          ],
+          groups: [],
+          checkInterval: parsedConfig.checkInterval
+        };
+        
+        logger.log('Legacy configuration format detected. Converting to multi-UPS format.');
+        
+        // Save the new format
+        await this.saveConfig(this.config);
+      } else {
+        this.config = parsedConfig;
+      }
+      
       return this.config;
     } catch (error) {
-      if (error.message.includes('No configuration found')) {
+      if (error.message && error.message.includes('No configuration found')) {
         throw error; // Re-throw the no configuration error
       }
       
@@ -147,11 +237,11 @@ export class NupstDaemon {
    */
   public async start(): Promise<void> {
     if (this.isRunning) {
-      console.log('Daemon is already running');
+      logger.log('Daemon is already running');
       return;
     }
 
-    console.log('Starting NUPST daemon...');
+    logger.log('Starting NUPST daemon...');
     
     try {
       // Load configuration - this will throw an error if config doesn't exist
@@ -165,45 +255,87 @@ export class NupstDaemon {
       this.snmp.getNupst().checkForUpdates().then(updateAvailable => {
         if (updateAvailable) {
           const updateStatus = this.snmp.getNupst().getUpdateStatus();
-          console.log('┌─ Update Available ───────────────────────┐');
+          const boxWidth = 45;
-          console.log(`│ Current Version: ${updateStatus.currentVersion}`);
+          logger.logBoxTitle('Update Available', boxWidth);
-          console.log(`│ Latest Version: ${updateStatus.latestVersion}`);
+          logger.logBoxLine(`Current Version: ${updateStatus.currentVersion}`);
-          console.log('│ Run "sudo nupst update" to update');
+          logger.logBoxLine(`Latest Version: ${updateStatus.latestVersion}`);
-          console.log('└──────────────────────────────────────────┘');
+          logger.logBoxLine('Run "sudo nupst update" to update');
+          logger.logBoxEnd();
         }
       }).catch(() => {}); // Ignore errors checking for updates
       
+      // Initialize UPS status tracking
+      this.initializeUpsStatus();
+      
       // Start UPS monitoring
       this.isRunning = true;
       await this.monitor();
     } catch (error) {
       this.isRunning = false;
-      console.error(`Daemon failed to start: ${error.message}`);
+      logger.error(`Daemon failed to start: ${error.message}`);
       process.exit(1); // Exit with error
     }
   }
 
+  /**
+   * Initialize UPS status tracking for all UPS devices
+   */
+  private initializeUpsStatus(): void {
+    this.upsStatus.clear();
+    
+    if (this.config.upsDevices && this.config.upsDevices.length > 0) {
+      for (const ups of this.config.upsDevices) {
+        this.upsStatus.set(ups.id, {
+          id: ups.id,
+          name: ups.name,
+          powerStatus: 'unknown',
+          batteryCapacity: 100,
+          batteryRuntime: 999, // High value as default
+          lastStatusChange: Date.now(),
+          lastCheckTime: 0
+        });
+      }
+      
+      logger.log(`Initialized status tracking for ${this.config.upsDevices.length} UPS devices`);
+    } else {
+      logger.error('No UPS devices found in configuration');
+    }
+  }
+
   /**
    * Log the loaded configuration settings
    */
   private logConfigLoaded(): void {
-    console.log('┌─ Configuration Loaded ─────────────────────┐');
+    const boxWidth = 50;
-    console.log('│ SNMP Settings:');
+    logger.logBoxTitle('Configuration Loaded', boxWidth);
-    console.log(`│   Host: ${this.config.snmp.host}`);
+    
-    console.log(`│   Port: ${this.config.snmp.port}`);
+    if (this.config.upsDevices && this.config.upsDevices.length > 0) {
-    console.log(`│   Version: ${this.config.snmp.version}`);
+      logger.logBoxLine(`UPS Devices: ${this.config.upsDevices.length}`);
-    console.log('│ Thresholds:');
+      for (const ups of this.config.upsDevices) {
-    console.log(`│   Battery: ${this.config.thresholds.battery}%`);
+        logger.logBoxLine(`  - ${ups.name} (${ups.id}): ${ups.snmp.host}:${ups.snmp.port}`);
-    console.log(`│   Runtime: ${this.config.thresholds.runtime} minutes`);
+      }
-    console.log(`│ Check Interval: ${this.config.checkInterval / 1000} seconds`);
+    } else {
-    console.log('└────────────────────────────────────────────┘');
+      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.logBoxLine(`Check Interval: ${this.config.checkInterval / 1000} seconds`);
+    logger.logBoxEnd();
   }
 
   /**
    * Stop the monitoring daemon
    */
   public stop(): void {
-    console.log('Stopping NUPST daemon...');
+    logger.log('Stopping NUPST daemon...');
     this.isRunning = false;
   }
 
@@ -211,81 +343,241 @@ export class NupstDaemon {
    * Monitor the UPS status and trigger shutdown when necessary
    */
   private async monitor(): Promise<void> {
-    console.log('Starting UPS monitoring...');
+    logger.log('Starting UPS monitoring...');
+    
+    if (!this.config.upsDevices || this.config.upsDevices.length === 0) {
+      logger.error('No UPS devices found in configuration. Monitoring stopped.');
+      this.isRunning = false;
+      return;
+    }
     
-    let lastStatus: 'online' | 'onBattery' | 'unknown' = 'unknown';
     let lastLogTime = 0; // Track when we last logged status
     const LOG_INTERVAL = 5 * 60 * 1000; // Log at least every 5 minutes (300000ms)
     
     // Monitor continuously
     while (this.isRunning) {
       try {
-        const status = await this.snmp.getUpsStatus(this.config.snmp);
+        // Check all UPS devices
-        const currentTime = Date.now();
+        await this.checkAllUpsDevices();
-        const shouldLogStatus = (currentTime - lastLogTime) >= LOG_INTERVAL;
         
-        // Log status changes
+        // Log periodic status update
-        if (status.powerStatus !== lastStatus) {
+        const currentTime = Date.now();
-          console.log('┌─ Power Status Change ─────────────────────┐');
+        if (currentTime - lastLogTime >= LOG_INTERVAL) {
-          console.log(`│ Status changed: ${lastStatus} → ${status.powerStatus}`);
+          this.logAllUpsStatus();
-          console.log('└───────────────────────────────────────────┘');
-          lastStatus = status.powerStatus;
-          lastLogTime = currentTime; // Reset log timer when status changes
-        }
-        // Log status periodically (at least every 5 minutes)
-        else if (shouldLogStatus) {
-          const timestamp = new Date().toISOString();
-          console.log('┌─ Periodic Status Update ──────────────────┐');
-          console.log(`│ Timestamp: ${timestamp}`);
-          console.log(`│ Power Status: ${status.powerStatus}`);
-          console.log(`│ Battery: ${status.batteryCapacity}% | Runtime: ${status.batteryRuntime} min`);
-          console.log('└───────────────────────────────────────────┘');
           lastLogTime = currentTime;
         }
         
-        // Handle battery power status
+        // Check if shutdown is required based on group configurations
-        if (status.powerStatus === 'onBattery') {
+        await this.evaluateGroupShutdownConditions();
-          await this.handleOnBatteryStatus(status);
-        }
         
         // Wait before next check
         await this.sleep(this.config.checkInterval);
       } catch (error) {
-        console.error('Error during UPS monitoring:', error);
+        logger.error(`Error during UPS monitoring: ${error.message}`);
         await this.sleep(this.config.checkInterval);
       }
     }
     
-    console.log('UPS monitoring stopped');
+    logger.log('UPS monitoring stopped');
   }
   
   /**
-   * Handle UPS status when running on battery
+   * Check status of all UPS devices
    */
-  private async handleOnBatteryStatus(status: { 
+  private async checkAllUpsDevices(): Promise<void> {
-    powerStatus: string,
+    for (const ups of this.config.upsDevices) {
-    batteryCapacity: number,
+      try {
-    batteryRuntime: number
+        const upsStatus = this.upsStatus.get(ups.id);
-  }): Promise<void> {
+        if (!upsStatus) {
-    console.log('┌─ UPS Status ─────────────────────────────┐');
+          // Initialize status for this UPS if not exists
-    console.log(`│ Battery: ${status.batteryCapacity}% | Runtime: ${status.batteryRuntime} min`);
+          this.upsStatus.set(ups.id, {
-    console.log('└──────────────────────────────────────────┘');
+            id: ups.id,
+            name: ups.name,
+            powerStatus: 'unknown',
+            batteryCapacity: 100,
+            batteryRuntime: 999,
+            lastStatusChange: Date.now(),
+            lastCheckTime: 0
+          });
+        }
         
-    // Check battery threshold
+        // Check UPS status
-    if (status.batteryCapacity < this.config.thresholds.battery) {
+        const status = await this.snmp.getUpsStatus(ups.snmp);
-      console.log('⚠️ WARNING: Battery capacity below threshold');
+        const currentTime = Date.now();
-      console.log(`Current: ${status.batteryCapacity}% | Threshold: ${this.config.thresholds.battery}%`);
+        
-      await this.initiateShutdown('Battery capacity below threshold');
+        // Get the current status from the map
+        const currentStatus = this.upsStatus.get(ups.id);
+        
+        // Update status with new values
+        const updatedStatus = {
+          ...currentStatus,
+          powerStatus: status.powerStatus,
+          batteryCapacity: status.batteryCapacity,
+          batteryRuntime: status.batteryRuntime,
+          lastCheckTime: currentTime
+        };
+        
+        // Check if power status changed
+        if (currentStatus.powerStatus !== status.powerStatus) {
+          logger.logBoxTitle(`Power Status Change: ${ups.name}`, 50);
+          logger.logBoxLine(`Status changed: ${currentStatus.powerStatus} → ${status.powerStatus}`);
+          logger.logBoxEnd();
+          
+          updatedStatus.lastStatusChange = currentTime;
+        }
+        
+        // Update the status in the map
+        this.upsStatus.set(ups.id, updatedStatus);
+      } catch (error) {
+        logger.error(`Error checking UPS ${ups.name} (${ups.id}): ${error.message}`);
+      }
+    }
+  }
+  
+  /**
+   * Log status of all UPS devices
+   */
+  private logAllUpsStatus(): void {
+    const timestamp = new Date().toISOString();
+    const boxWidth = 60;
+    logger.logBoxTitle('Periodic Status Update', boxWidth);
+    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();
+  }
+  
+  /**
+   * Evaluate if shutdown is required based on group configurations
+   */
+  private async evaluateGroupShutdownConditions(): Promise<void> {
+    if (!this.config.groups || this.config.groups.length === 0) {
+      // No groups defined, check individual UPS conditions
+      for (const [id, status] of this.upsStatus.entries()) {
+        if (status.powerStatus === 'onBattery') {
+          // Find the UPS config
+          const ups = this.config.upsDevices.find(u => u.id === id);
+          if (ups) {
+            await this.evaluateUpsShutdownCondition(ups, status);
+          }
+        }
+      }
       return;
     }
     
-    // Check runtime threshold
+    // Evaluate each group
-    if (status.batteryRuntime < this.config.thresholds.runtime) {
+    for (const group of this.config.groups) {
-      console.log('⚠️ WARNING: Runtime below threshold');
+      // Find all UPS devices in this group
-      console.log(`Current: ${status.batteryRuntime} min | Threshold: ${this.config.thresholds.runtime} min`);
+      const upsDevicesInGroup = this.config.upsDevices.filter(ups => 
-      await this.initiateShutdown('Runtime below threshold');
+        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
+    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: ${ups.thresholds.runtime} min)`);
+      logger.logBoxEnd();
+      
+      await this.initiateShutdown(`UPS "${ups.name}" battery or runtime below threshold`);
+    }
   }
   
   /**
@@ -293,7 +585,7 @@ export class NupstDaemon {
    * @param reason Reason for shutdown
    */
   public async initiateShutdown(reason: string): Promise<void> {
-    console.log(`Initiating system shutdown due to: ${reason}`);
+    logger.log(`Initiating system shutdown due to: ${reason}`);
     
     // Set a longer delay for shutdown to allow VMs and services to close
     const shutdownDelayMinutes = 5;
@@ -312,7 +604,7 @@ export class NupstDaemon {
         try {
           if (fs.existsSync(path)) {
             shutdownCmd = path;
-            console.log(`Found shutdown command at: ${shutdownCmd}`);
+            logger.log(`Found shutdown command at: ${shutdownCmd}`);
             break;
           }
         } catch (e) {
@@ -322,32 +614,32 @@ export class NupstDaemon {
       
       if (shutdownCmd) {
         // Execute shutdown command with delay to allow for VM graceful shutdown
-        console.log(`Executing: ${shutdownCmd} -h +${shutdownDelayMinutes} "UPS battery critical..."`);
+        logger.log(`Executing: ${shutdownCmd} -h +${shutdownDelayMinutes} "UPS battery critical..."`);
         const { stdout } = await execFileAsync(shutdownCmd, [
           '-h', 
           `+${shutdownDelayMinutes}`, 
           `UPS battery critical, shutting down in ${shutdownDelayMinutes} minutes`
         ]);
-        console.log('Shutdown initiated:', stdout);
+        logger.log(`Shutdown initiated: ${stdout}`);
-        console.log(`Allowing ${shutdownDelayMinutes} minutes for VMs to shut down safely`);
+        logger.log(`Allowing ${shutdownDelayMinutes} minutes for VMs to shut down safely`);
       } else {
         // Try using the PATH to find shutdown
         try {
-          console.log('Shutdown command not found in common paths, trying via PATH...');
+          logger.log('Shutdown command not found in common paths, trying via PATH...');
           const { stdout } = await execAsync(`shutdown -h +${shutdownDelayMinutes} "UPS battery critical, shutting down in ${shutdownDelayMinutes} minutes"`, {
             env: process.env // Pass the current environment
           });
-          console.log('Shutdown initiated:', stdout);
+          logger.log(`Shutdown initiated: ${stdout}`);
         } catch (e) {
           throw new Error(`Shutdown command not found: ${e.message}`);
         }
       }
       
       // Monitor UPS during shutdown and force immediate shutdown if battery gets too low
-      console.log('Monitoring UPS during shutdown process...');
+      logger.log('Monitoring UPS during shutdown process...');
       await this.monitorDuringShutdown();
     } catch (error) {
-      console.error('Failed to initiate shutdown:', error);
+      logger.error(`Failed to initiate shutdown: ${error}`);
       
       // Try alternative shutdown methods
       const alternatives = [
@@ -376,30 +668,30 @@ export class NupstDaemon {
           }
           
           if (cmdPath) {
-            console.log(`Trying alternative shutdown method: ${cmdPath} ${alt.args.join(' ')}`);
+            logger.log(`Trying alternative shutdown method: ${cmdPath} ${alt.args.join(' ')}`);
             await execFileAsync(cmdPath, alt.args);
             return; // Exit if successful
           } else {
             // Try using PATH environment
-            console.log(`Trying alternative via PATH: ${alt.cmd} ${alt.args.join(' ')}`);
+            logger.log(`Trying alternative via PATH: ${alt.cmd} ${alt.args.join(' ')}`);
             await execAsync(`${alt.cmd} ${alt.args.join(' ')}`, {
               env: process.env // Pass the current environment
             });
             return; // Exit if successful
           }
         } catch (altError) {
-          console.error(`Alternative method ${alt.cmd} failed:`, altError);
+          logger.error(`Alternative method ${alt.cmd} failed: ${altError}`);
           // Continue to next method
         }
       }
       
-      console.error('All shutdown methods failed');
+      logger.error('All shutdown methods failed');
     }
   }
   
   /**
    * Monitor UPS during system shutdown
-   * Force immediate shutdown if battery gets critically low
+   * Force immediate shutdown if any UPS gets critically low
    */
   private async monitorDuringShutdown(): Promise<void> {
     const EMERGENCY_RUNTIME_THRESHOLD = 5; // 5 minutes remaining is critical
@@ -407,23 +699,51 @@ export class NupstDaemon {
     const MAX_MONITORING_TIME = 5 * 60 * 1000; // Max 5 minutes of monitoring
     const startTime = Date.now();
     
-    console.log(`Emergency shutdown threshold: ${EMERGENCY_RUNTIME_THRESHOLD} minutes remaining battery runtime`);
+    logger.log(`Emergency shutdown threshold: ${EMERGENCY_RUNTIME_THRESHOLD} minutes remaining battery runtime`);
     
     // Continue monitoring until max monitoring time is reached
     while (Date.now() - startTime < MAX_MONITORING_TIME) {
       try {
-        console.log('Checking UPS status during shutdown...');
+        logger.log('Checking UPS status during shutdown...');
-        const status = await this.snmp.getUpsStatus(this.config.snmp);
         
-        console.log(`Current battery: ${status.batteryCapacity}%, Runtime: ${status.batteryRuntime} minutes`);
+        // Check all UPS devices
+        for (const ups of this.config.upsDevices) {
+          try {
+            const status = await this.snmp.getUpsStatus(ups.snmp);
             
-        // If battery runtime gets critically low, force immediate shutdown
+            logger.log(`UPS ${ups.name}: Battery ${status.batteryCapacity}%, Runtime: ${status.batteryRuntime} minutes`);
+            
+            // If any UPS battery runtime gets critically low, force immediate shutdown
             if (status.batteryRuntime < EMERGENCY_RUNTIME_THRESHOLD) {
-          console.log('┌─ EMERGENCY SHUTDOWN ─────────────────────┐');
+              logger.logBoxTitle('EMERGENCY SHUTDOWN', 50);
-          console.log(`│ Battery runtime critically low: ${status.batteryRuntime} minutes`);
+              logger.logBoxLine(`UPS ${ups.name} runtime critically low: ${status.batteryRuntime} minutes`);
-          console.log('│ Forcing immediate shutdown!');
+              logger.logBoxLine('Forcing immediate shutdown!');
-          console.log('└──────────────────────────────────────────┘');
+              logger.logBoxEnd();
               
+              // Force immediate shutdown
+              await this.forceImmediateShutdown();
+              return;
+            }
+          } catch (upsError) {
+            logger.error(`Error checking UPS ${ups.name} during shutdown: ${upsError.message}`);
+          }
+        }
+        
+        // Wait before checking again
+        await this.sleep(CHECK_INTERVAL);
+      } catch (error) {
+        logger.error(`Error monitoring UPS during shutdown: ${error.message}`);
+        await this.sleep(CHECK_INTERVAL);
+      }
+    }
+    
+    logger.log('UPS monitoring during shutdown completed');
+  }
+  
+  /**
+   * Force an immediate system shutdown
+   */
+  private async forceImmediateShutdown(): Promise<void> {
     try {
       // Find shutdown command in common system paths
       const shutdownPaths = [
@@ -437,23 +757,23 @@ export class NupstDaemon {
       for (const path of shutdownPaths) {
         if (fs.existsSync(path)) {
           shutdownCmd = path;
-                console.log(`Found shutdown command at: ${shutdownCmd}`);
+          logger.log(`Found shutdown command at: ${shutdownCmd}`);
           break;
         }
       }
       
       if (shutdownCmd) {
-              console.log(`Executing emergency shutdown: ${shutdownCmd} -h now`);
+        logger.log(`Executing emergency shutdown: ${shutdownCmd} -h now`);
         await execFileAsync(shutdownCmd, ['-h', 'now', 'EMERGENCY: UPS battery critically low, shutting down NOW']);
       } else {
         // Try using the PATH to find shutdown
-              console.log('Shutdown command not found in common paths, trying via PATH...');
+        logger.log('Shutdown command not found in common paths, trying via PATH...');
         await execAsync('shutdown -h now "EMERGENCY: UPS battery critically low, shutting down NOW"', {
           env: process.env // Pass the current environment
         });
       }
     } catch (error) {
-            console.error('Emergency shutdown failed, trying alternative methods...');
+      logger.error('Emergency shutdown failed, trying alternative methods...');
       
       // Try alternative shutdown methods in sequence
       const alternatives = [
@@ -481,12 +801,12 @@ export class NupstDaemon {
           }
           
           if (cmdPath) {
-                  console.log(`Emergency: using ${cmdPath} ${alt.args.join(' ')}`);
+            logger.log(`Emergency: using ${cmdPath} ${alt.args.join(' ')}`);
             await execFileAsync(cmdPath, alt.args);
             return; // Exit if successful
           } else {
             // Try using PATH
-                  console.log(`Emergency: trying ${alt.cmd} via PATH`);
+            logger.log(`Emergency: trying ${alt.cmd} via PATH`);
             await execAsync(`${alt.cmd} ${alt.args.join(' ')}`, {
               env: process.env
             });
@@ -497,22 +817,8 @@ export class NupstDaemon {
         }
       }
       
-            console.error('All emergency shutdown methods failed');
+      logger.error('All emergency shutdown methods failed');
     }
-          
-          // Stop monitoring after initiating emergency shutdown
-          return;
-        }
-        
-        // Wait before checking again
-        await this.sleep(CHECK_INTERVAL);
-      } catch (error) {
-        console.error('Error monitoring UPS during shutdown:', error);
-        await this.sleep(CHECK_INTERVAL);
-      }
-    }
-    
-    console.log('UPS monitoring during shutdown completed');
   }
 
   /**

ts/helpers/index.ts

@@ -0,0 +1 @@
+export * from './shortid.js';

ts/helpers/shortid.ts

@@ -0,0 +1,22 @@
+/**
+ * Generate a short unique ID of 6 alphanumeric characters
+ * @returns A 6-character alphanumeric string
+ */
+export function shortId(): string {
+  // Define the character set: a-z, A-Z, 0-9
+  const chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
+  
+  // Generate cryptographically secure random values
+  const randomValues = new Uint8Array(6);
+  crypto.getRandomValues(randomValues);
+  
+  // Map each random value to a character in our set
+  let result = '';
+  for (let i = 0; i < 6; i++) {
+    // Use modulo to map the random byte to a character index
+    const index = randomValues[i] % chars.length;
+    result += chars[index];
+  }
+  
+  return result;
+}

ts/index.ts

@@ -1,6 +1,7 @@
 #!/usr/bin/env node
 
 import { NupstCli } from './cli.js';
+import { logger } from './logger.js';
 
 /**
  * Main entry point for NUPST
@@ -13,6 +14,6 @@ async function main() {
 
 // Run the main function and handle any errors
 main().catch(error => {
-  console.error('Error:', error);
+  logger.error(`Error: ${error}`);
   process.exit(1);
 });

ts/logger.ts

@@ -0,0 +1,147 @@
+/**
+ * A simple logger class that provides consistent formatting for log messages
+ * including support for logboxes with title, lines, and closing
+ */
+export class Logger {
+  private currentBoxWidth: number | null = null;
+  private static instance: Logger;
+  
+  /** Default width to use when no width is specified */
+  private readonly DEFAULT_WIDTH = 60;
+
+  /**
+   * Creates a new Logger instance
+   */
+  constructor() {
+    this.currentBoxWidth = null;
+  }
+
+  /**
+   * Get the singleton logger instance
+   * @returns The singleton logger instance
+   */
+  public static getInstance(): Logger {
+    if (!Logger.instance) {
+      Logger.instance = new Logger();
+    }
+    return Logger.instance;
+  }
+
+  /**
+   * Log a message
+   * @param message Message to log
+   */
+  public log(message: string): void {
+    console.log(message);
+  }
+
+  /**
+   * Log an error message
+   * @param message Error message to log
+   */
+  public error(message: string): void {
+    console.error(message);
+  }
+
+  /**
+   * Log a warning message with a warning emoji
+   * @param message Warning message to log
+   */
+  public warn(message: string): void {
+    console.warn(`⚠️ ${message}`);
+  }
+
+  /**
+   * Log a success message with a checkmark
+   * @param message Success message to log
+   */
+  public success(message: string): void {
+    console.log(`✓ ${message}`);
+  }
+
+  /**
+   * Log a logbox title and set the current box width
+   * @param title Title of the logbox
+   * @param width Width of the logbox (including borders), defaults to DEFAULT_WIDTH
+   */
+  public logBoxTitle(title: string, width?: number): void {
+    this.currentBoxWidth = width || this.DEFAULT_WIDTH;
+    
+    // Create the title line with appropriate padding
+    const paddedTitle = ` ${title} `;
+    const remainingSpace = this.currentBoxWidth - 3 - paddedTitle.length;
+    
+    // Title line: ┌─ Title ───┐
+    const titleLine = `┌─${paddedTitle}${'─'.repeat(Math.max(0, remainingSpace))}┐`;
+    
+    console.log(titleLine);
+  }
+
+  /**
+   * Log a logbox line
+   * @param content Content of the line
+   * @param width Optional width override. If not provided, uses the current box width or DEFAULT_WIDTH.
+   */
+  public logBoxLine(content: string, width?: number): void {
+    if (!this.currentBoxWidth && !width) {
+      // No current width and no width provided, use default width
+      this.logBoxTitle('', this.DEFAULT_WIDTH);
+    }
+    
+    const boxWidth = width || this.currentBoxWidth || this.DEFAULT_WIDTH;
+    
+    // Calculate the available space for content
+    const availableSpace = boxWidth - 2; // Account for left and right borders
+    
+    if (content.length <= availableSpace - 1) {
+      // If content fits with at least one space for the right border stripe
+      const padding = availableSpace - content.length - 1;
+      console.log(`│ ${content}${' '.repeat(padding)}│`);
+    } else {
+      // Content is too long, let it flow out of boundaries.
+      console.log(`│ ${content}`);
+    }
+  }
+
+  /**
+   * Log a logbox end
+   * @param width Optional width override. If not provided, uses the current box width or DEFAULT_WIDTH.
+   */
+  public logBoxEnd(width?: number): void {
+    const boxWidth = width || this.currentBoxWidth || this.DEFAULT_WIDTH;
+    
+    // Create the bottom border: └────────┘
+    console.log(`└${'─'.repeat(boxWidth - 2)}┘`);
+    
+    // Reset the current box width
+    this.currentBoxWidth = null;
+  }
+
+  /**
+   * Log a complete logbox with title, content lines, and ending
+   * @param title Title of the logbox
+   * @param lines Array of content lines
+   * @param width Width of the logbox, defaults to DEFAULT_WIDTH
+   */
+  public logBox(title: string, lines: string[], width?: number): void {
+    this.logBoxTitle(title, width || this.DEFAULT_WIDTH);
+    
+    for (const line of lines) {
+      this.logBoxLine(line);
+    }
+    
+    this.logBoxEnd();
+  }
+
+  /**
+   * Log a divider line
+   * @param width Width of the divider, defaults to DEFAULT_WIDTH
+   * @param character Character to use for the divider (default: ─)
+   */
+  public logDivider(width?: number, character: string = '─'): void {
+    console.log(character.repeat(width || this.DEFAULT_WIDTH));
+  }
+}
+
+// Export a singleton instance for easy use
+export const logger = Logger.getInstance();

ts/nupst.ts

@@ -2,7 +2,10 @@ import { NupstSnmp } from './snmp/manager.js';
 import { NupstDaemon } from './daemon.js';
 import { NupstSystemd } from './systemd.js';
 import { commitinfo } from './00_commitinfo_data.js';
-import { spawn } from 'child_process';
+import { logger } from './logger.js';
+import { UpsHandler } from './cli/ups-handler.js';
+import { GroupHandler } from './cli/group-handler.js';
+import { ServiceHandler } from './cli/service-handler.js';
 import * as https from 'https';
 
 /**
@@ -13,6 +16,9 @@ export class Nupst {
   private readonly snmp: NupstSnmp;
   private readonly daemon: NupstDaemon;
   private readonly systemd: NupstSystemd;
+  private readonly upsHandler: UpsHandler;
+  private readonly groupHandler: GroupHandler;
+  private readonly serviceHandler: ServiceHandler;
   private updateAvailable: boolean = false;
   private latestVersion: string = '';
 
@@ -20,10 +26,16 @@ export class Nupst {
    * Create a new Nupst instance with all necessary components
    */
   constructor() {
+    // Initialize core components
     this.snmp = new NupstSnmp();
     this.snmp.setNupst(this); // Set up bidirectional reference
     this.daemon = new NupstDaemon(this.snmp);
     this.systemd = new NupstSystemd(this.daemon);
+    
+    // Initialize handlers
+    this.upsHandler = new UpsHandler(this);
+    this.groupHandler = new GroupHandler(this);
+    this.serviceHandler = new ServiceHandler(this);
   }
 
   /**
@@ -47,6 +59,27 @@ export class Nupst {
     return this.systemd;
   }
   
+  /**
+   * Get the UPS handler for UPS management
+   */
+  public getUpsHandler(): UpsHandler {
+    return this.upsHandler;
+  }
+  
+  /**
+   * Get the Group handler for group management
+   */
+  public getGroupHandler(): GroupHandler {
+    return this.groupHandler;
+  }
+  
+  /**
+   * Get the Service handler for service management
+   */
+  public getServiceHandler(): ServiceHandler {
+    return this.serviceHandler;
+  }
+  
   /**
    * Get the current version of NUPST
    * @returns The current version string
@@ -70,7 +103,7 @@ export class Nupst {
       
       return this.updateAvailable;
     } catch (error) {
-      console.error(`Error checking for updates: ${error.message}`);
+      logger.error(`Error checking for updates: ${error.message}`);
       return false;
     }
   }
@@ -162,28 +195,33 @@ export class Nupst {
    */
   public logVersionInfo(checkForUpdates: boolean = true): void {
     const version = this.getVersion();
-    console.log('┌─ NUPST Version ────────────────────────────┐');
+    const boxWidth = 45;
-    console.log(`│ Current Version: ${version}`);
+    
+    logger.logBoxTitle('NUPST Version', boxWidth);
+    logger.logBoxLine(`Current Version: ${version}`);
     
     if (this.updateAvailable && this.latestVersion) {
-      console.log(`│ Update Available: ${this.latestVersion}`);
+      logger.logBoxLine(`Update Available: ${this.latestVersion}`);
-      console.log('│ Run "sudo nupst update" to update');
+      logger.logBoxLine('Run "sudo nupst update" to update');
+      logger.logBoxEnd();
     } else if (checkForUpdates) {
-      console.log('│ Checking for updates...');
+      logger.logBoxLine('Checking for updates...');
+      
+      // We can't end the box yet since we're in an async operation
       this.checkForUpdates().then(updateAvailable => {
         if (updateAvailable) {
-          console.log(`│ Update Available: ${this.latestVersion}`);
+          logger.logBoxLine(`Update Available: ${this.latestVersion}`);
-          console.log('│ Run "sudo nupst update" to update');
+          logger.logBoxLine('Run "sudo nupst update" to update');
         } else {
-          console.log('│ You are running the latest version');
+          logger.logBoxLine('You are running the latest version');
         }
-        console.log('└──────────────────────────────────────────┘');
+        logger.logBoxEnd();
       }).catch(() => {
-        console.log('│ Could not check for updates');
+        logger.logBoxLine('Could not check for updates');
-        console.log('└──────────────────────────────────────────┘');
+        logger.logBoxEnd();
       });
     } else {
-      console.log('└──────────────────────────────────────────┘');
+      logger.logBoxEnd();
     }
   }
 }

ts/systemd.ts

@@ -1,6 +1,7 @@
 import { promises as fs } from 'fs';
 import { execSync } from 'child_process';
 import { NupstDaemon } from './daemon.js';
+import { logger } from './logger.js';
 
 /**
  * Class for managing systemd service
@@ -13,7 +14,7 @@ export class NupstSystemd {
 
   /** Template for the systemd service file */
   private readonly serviceTemplate = `[Unit]
-Description=Node.js UPS Shutdown Tool
+Description=Node.js UPS Shutdown Tool for Multiple UPS Devices
 After=network.target
 
 [Service]
@@ -47,10 +48,11 @@ WantedBy=multi-user.target
     try {
       await fs.access(configPath);
     } catch (error) {
-      console.error('┌─ Configuration Error ─────────────────────┐');
+      const boxWidth = 50;
-      console.error(`│ No configuration file found at ${configPath}`);
+      logger.logBoxTitle('Configuration Error', boxWidth);
-      console.error('│ Please run \'nupst setup\' first to create a configuration.');
+      logger.logBoxLine(`No configuration file found at ${configPath}`);
-      console.error('└──────────────────────────────────────────┘');
+      logger.logBoxLine("Please run 'nupst add' first to create a UPS configuration.");
+      logger.logBoxEnd();
       throw new Error('Configuration not found');
     }
   }
@@ -66,23 +68,24 @@ WantedBy=multi-user.target
       
       // Write the service file
       await fs.writeFile(this.serviceFilePath, this.serviceTemplate);
-      console.log('┌─ Service Installation ──────────────────────┐');
+      const boxWidth = 50;
-      console.log(`│ Service file created at ${this.serviceFilePath}`);
+      logger.logBoxTitle('Service Installation', boxWidth);
+      logger.logBoxLine(`Service file created at ${this.serviceFilePath}`);
 
       // Reload systemd daemon
       execSync('systemctl daemon-reload');
-      console.log('│ Systemd daemon reloaded');
+      logger.logBoxLine('Systemd daemon reloaded');
 
       // Enable the service
       execSync('systemctl enable nupst.service');
-      console.log('│ Service enabled to start on boot');
+      logger.logBoxLine('Service enabled to start on boot');
-      console.log('└────────────────────────────────────────────────┘');
+      logger.logBoxEnd();
     } catch (error) {
       if (error.message === 'Configuration not found') {
         // Just rethrow the error as the message has already been displayed
         throw error;
       }
-      console.error('Failed to install systemd service:', error);
+      logger.error(`Failed to install systemd service: ${error}`);
       throw error;
     }
   }
@@ -97,15 +100,16 @@ WantedBy=multi-user.target
       await this.checkConfigExists();
       
       execSync('systemctl start nupst.service');
-      console.log('┌─ Service Status ───────────────────────────┐');
+      const boxWidth = 45;
-      console.log('│ NUPST service started successfully');
+      logger.logBoxTitle('Service Status', boxWidth);
-      console.log('└────────────────────────────────────────────┘');
+      logger.logBoxLine('NUPST service started successfully');
+      logger.logBoxEnd();
     } catch (error) {
       if (error.message === 'Configuration not found') {
         // Exit with error code since configuration is required
         process.exit(1);
       }
-      console.error('Failed to start service:', error);
+      logger.error(`Failed to start service: ${error}`);
       throw error;
     }
   }
@@ -117,9 +121,9 @@ WantedBy=multi-user.target
   public async stop(): Promise<void> {
     try {
       execSync('systemctl stop nupst.service');
-      console.log('NUPST service stopped');
+      logger.success('NUPST service stopped');
     } catch (error) {
-      console.error('Failed to stop service:', error);
+      logger.error(`Failed to stop service: ${error}`);
       throw error;
     }
   }
@@ -132,9 +136,10 @@ WantedBy=multi-user.target
     try {
       // Enable debug mode if requested
       if (debugMode) {
-        console.log('┌─ Debug Mode ─────────────────────────────┐');
+        const boxWidth = 45;
-        console.log('│ SNMP debugging enabled - detailed logs will be shown');
+        logger.logBoxTitle('Debug Mode', boxWidth);
-        console.log('└──────────────────────────────────────────┘');
+        logger.logBoxLine('SNMP debugging enabled - detailed logs will be shown');
+        logger.logBoxEnd();
         this.daemon.getNupstSnmp().enableDebug();
       }
       
@@ -150,9 +155,9 @@ WantedBy=multi-user.target
       }
       
       await this.displayServiceStatus();
-      await this.displayUpsStatus();
+      await this.displayAllUpsStatus();
     } catch (error) {
-      console.error(`Failed to get status: ${error.message}`);
+      logger.error(`Failed to get status: ${error.message}`);
     }
   }
 
@@ -163,49 +168,115 @@ WantedBy=multi-user.target
   private async displayServiceStatus(): Promise<void> {
     try {
       const serviceStatus = execSync('systemctl status nupst.service').toString();
-      console.log('┌─ Service Status ─────────────────────────┐');
+      const boxWidth = 45;
-      console.log(serviceStatus.split('\n').map(line => `│ ${line}`).join('\n'));
+      logger.logBoxTitle('Service Status', boxWidth);
-      console.log('└──────────────────────────────────────────┘');
+      // Process each line of the status output
+      serviceStatus.split('\n').forEach(line => {
+        logger.logBoxLine(line);
+      });
+      logger.logBoxEnd();
     } catch (error) {
-      console.error('┌─ Service Status ─────────────────────────┐');
+      const boxWidth = 45;
-      console.error('│ Service is not running');
+      logger.logBoxTitle('Service Status', boxWidth);
-      console.error('└──────────────────────────────────────────┘');
+      logger.logBoxLine('Service is not running');
+      logger.logBoxEnd();
     }
   }
 
   /**
-   * Display the UPS status
+   * Display all UPS statuses
    * @private
    */
-  private async displayUpsStatus(): Promise<void> {
+  private async displayAllUpsStatus(): Promise<void> {
     try {
       // Explicitly load the configuration first to ensure it's up-to-date
       await this.daemon.loadConfig();
       const config = this.daemon.getConfig();
       const snmp = this.daemon.getNupstSnmp();
       
-      // Create a test config with appropriate timeout, similar to the test command
+      // Check if we have the new multi-UPS config format
-      const snmpConfig = { 
+      if (config.upsDevices && Array.isArray(config.upsDevices) && config.upsDevices.length > 0) {
-        ...config.snmp,
+        logger.log(`Found ${config.upsDevices.length} UPS device(s) in configuration`);
-        timeout: Math.min(config.snmp.timeout, 10000) // Use at most 10 seconds for status check
+        
+        // Show status for each UPS
+        for (const ups of config.upsDevices) {
+          await this.displaySingleUpsStatus(ups, snmp);
+        }
+      } else if (config.snmp) {
+        // Legacy single UPS configuration
+        const legacyUps = {
+          id: 'default',
+          name: 'Default UPS',
+          snmp: config.snmp,
+          thresholds: config.thresholds,
+          groups: []
         };
         
-      console.log('┌─ Connecting to UPS... ─────────────────────┐');
+        await this.displaySingleUpsStatus(legacyUps, snmp);
-      console.log(`│ Host: ${config.snmp.host}:${config.snmp.port}`);
+      } else {
-      console.log(`│ UPS Model: ${config.snmp.upsModel || 'cyberpower'}`);
+        logger.error('No UPS devices found in configuration');
-      console.log('└────────────────────────────────────────────┘');
+      }
-      
-      const status = await snmp.getUpsStatus(snmpConfig);
-      
-      console.log('┌─ UPS Status ─────────────────────────────┐');
-      console.log(`│ Power Status: ${status.powerStatus}`);
-      console.log(`│ Battery Capacity: ${status.batteryCapacity}%`);
-      console.log(`│ Runtime Remaining: ${status.batteryRuntime} minutes`);
-      console.log('└──────────────────────────────────────────┘');
     } catch (error) {
-      console.error('┌─ UPS Status ─────────────────────────────┐');
+      const boxWidth = 45;
-      console.error(`│ Failed to retrieve UPS status: ${error.message}`);
+      logger.logBoxTitle('UPS Status', boxWidth);
-      console.error('└──────────────────────────────────────────┘');
+      logger.logBoxLine(`Failed to retrieve UPS status: ${error.message}`);
+      logger.logBoxEnd();
+    }
+  }
+  
+  /**
+   * Display status of a single UPS
+   * @param ups UPS configuration
+   * @param snmp SNMP manager
+   */
+  private async displaySingleUpsStatus(ups: any, snmp: any): Promise<void> {
+    const boxWidth = 45;
+    logger.logBoxTitle(`Connecting to UPS: ${ups.name}`, boxWidth);
+    logger.logBoxLine(`ID: ${ups.id}`);
+    logger.logBoxLine(`Host: ${ups.snmp.host}:${ups.snmp.port}`);
+    logger.logBoxLine(`UPS Model: ${ups.snmp.upsModel || 'cyberpower'}`);
+    
+    if (ups.groups && ups.groups.length > 0) {
+      // Get group names if available
+      const config = this.daemon.getConfig();
+      const groupNames = ups.groups.map(groupId => {
+        const group = config.groups?.find(g => g.id === groupId);
+        return group ? group.name : groupId;
+      });
+      logger.logBoxLine(`Groups: ${groupNames.join(', ')}`);
+    }
+    
+    logger.logBoxEnd();
+    
+    try {
+      // Create a test config with a short timeout
+      const testConfig = {
+        ...ups.snmp,
+        timeout: Math.min(ups.snmp.timeout, 10000) // Use at most 10 seconds for status check
+      };
+      
+      const status = await snmp.getUpsStatus(testConfig);
+      
+      logger.logBoxTitle(`UPS Status: ${ups.name}`, boxWidth);
+      logger.logBoxLine(`Power Status: ${status.powerStatus}`);
+      logger.logBoxLine(`Battery Capacity: ${status.batteryCapacity}%`);
+      logger.logBoxLine(`Runtime Remaining: ${status.batteryRuntime} minutes`);
+      
+      // Show threshold status
+      logger.logBoxLine('');
+      logger.logBoxLine('Thresholds:');
+      logger.logBoxLine(`  Battery: ${status.batteryCapacity}% / ${ups.thresholds.battery}% ${
+        status.batteryCapacity < ups.thresholds.battery ? '⚠️' : '✓'
+      }`);
+      logger.logBoxLine(`  Runtime: ${status.batteryRuntime} min / ${ups.thresholds.runtime} min ${
+        status.batteryRuntime < ups.thresholds.runtime ? '⚠️' : '✓'
+      }`);
+      
+      logger.logBoxEnd();
+    } catch (error) {
+      logger.logBoxTitle(`UPS Status: ${ups.name}`, boxWidth);
+      logger.logBoxLine(`Failed to retrieve UPS status: ${error.message}`);
+      logger.logBoxEnd();
     }
   }
 
@@ -221,10 +292,10 @@ WantedBy=multi-user.target
       
       // Reload systemd daemon
       execSync('systemctl daemon-reload');
-      console.log('Systemd daemon reloaded');
+      logger.log('Systemd daemon reloaded');
-      console.log('NUPST service has been successfully uninstalled');
+      logger.success('NUPST service has been successfully uninstalled');
     } catch (error) {
-      console.error('Failed to disable and uninstall service:', error);
+      logger.error(`Failed to disable and uninstall service: ${error}`);
       throw error;
     }
   }
@@ -235,11 +306,11 @@ WantedBy=multi-user.target
    */
   private async stopService(): Promise<void> {
     try {
-      console.log('Stopping NUPST service...');
+      logger.log('Stopping NUPST service...');
       execSync('systemctl stop nupst.service');
     } catch (error) {
       // Service might not be running, that's okay
-      console.log('Service was not running or could not be stopped');
+      logger.log('Service was not running or could not be stopped');
     }
   }
 
@@ -249,10 +320,10 @@ WantedBy=multi-user.target
    */
   private async disableService(): Promise<void> {
     try {
-      console.log('Disabling NUPST service...');
+      logger.log('Disabling NUPST service...');
       execSync('systemctl disable nupst.service');
     } catch (error) {
-      console.log('Service was not enabled or could not be disabled');
+      logger.log('Service was not enabled or could not be disabled');
     }
   }
 
@@ -262,11 +333,11 @@ WantedBy=multi-user.target
    */
   private async removeServiceFile(): Promise<void> {
     if (await fs.stat(this.serviceFilePath).catch(() => null)) {
-      console.log(`Removing service file ${this.serviceFilePath}...`);
+      logger.log(`Removing service file ${this.serviceFilePath}...`);
       await fs.unlink(this.serviceFilePath);
-      console.log('Service file removed');
+      logger.log('Service file removed');
     } else {
-      console.log('Service file did not exist');
+      logger.log('Service file did not exist');
     }
   }
 }