feat(cli): Add uninstall command to CLI and update shutdown delay for graceful VM shutdown

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@serve.zone/nupst',
-  version: '2.0.1',
+  version: '2.1.0',
   description: 'Node.js UPS Shutdown Tool for SNMP-enabled UPS devices'
 }

ts/cli.ts

@@ -1,4 +1,7 @@
 import { execSync } from 'child_process';
+import { promises as fs } from 'fs';
+import { dirname, join } from 'path';
+import { fileURLToPath } from 'url';
 import { Nupst } from './nupst.js';
 
 /**
@@ -94,6 +97,10 @@ export class NupstCli {
       case 'update':
         await this.update();
         break;
+        
+      case 'uninstall':
+        await this.uninstall();
+        break;
 
       case 'help':
       default:
@@ -366,6 +373,7 @@ Usage:
   nupst setup          - Run the interactive setup to configure SNMP settings
   nupst test           - Test the current configuration by connecting to the UPS
   nupst update         - Update NUPST from repository and refresh systemd service (requires root)
+  nupst uninstall      - Completely uninstall NUPST from the system (requires root)
   nupst help           - Show this help message
 
 Options:
@@ -835,4 +843,99 @@ Options:
       }
     }
   }
+
+  /**
+   * Completely uninstall NUPST from the system
+   */
+  private 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 modulePath = dirname(dirname(binPath));
+        uninstallScriptPath = join(modulePath, 'uninstall.sh');
+        
+        // Check if the script exists
+        await fs.access(uninstallScriptPath);
+      } catch (error) {
+        // If we can't find it in the expected location, try common installation paths
+        const commonPaths = [
+          '/opt/nupst/uninstall.sh',
+          join(process.cwd(), 'uninstall.sh')
+        ];
+        
+        for (const path of commonPaths) {
+          try {
+            await fs.access(path);
+            uninstallScriptPath = path;
+            break;
+          } catch {
+            // Continue to next path
+          }
+        }
+        
+        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);
+    }
+  }
 }

ts/snmp/manager.ts

@@ -514,9 +514,10 @@ export class NupstSnmp {
   public async initiateShutdown(reason: string): Promise<void> {
     console.log(`Initiating system shutdown due to: ${reason}`);
     try {
-      // Execute shutdown command
-      const { stdout } = await execAsync('shutdown -h +1 "UPS battery critical, shutting down in 1 minute"');
+      // Execute shutdown command with 5 minute delay to allow for VM graceful shutdown
+      const { stdout } = await execAsync('shutdown -h +5 "UPS battery critical, shutting down in 5 minutes"');
       console.log('Shutdown initiated:', stdout);
+      console.log('Allowing 5 minutes for VMs to shut down safely');
     } catch (error) {
       console.error('Failed to initiate shutdown:', error);
       // Try a different method if first one fails