fix(db): resolve SQLite channel and initialization issues

- Add sqlite-status to valid IPC channels
- Fix SQLite ready signal handling
- Improve database status tracking
- Add proper error handling for status updates
- Keep database connection open during initialization

Technical Details:
- Added sqlite-status to VALID_CHANNELS.invoke list
- Implemented sqlite-status handler with proper verification
- Added database open state verification
- Improved error handling and logging
- Fixed premature database closing

Testing Notes:
- Verify SQLite ready signal is received correctly
- Confirm database stays open after initialization
- Check status updates are processed properly
- Verify error handling for invalid states

Security:
- Validates all IPC channels
- Verifies database state before operations
- Maintains proper connection lifecycle
- Implements proper error boundaries

Author: Matthew Raymer

electron/src/preload.ts

@@ -38,7 +38,7 @@ interface SQLiteConnectionOptions {
 
 // Define valid channels for security
 const VALID_CHANNELS = {
-  send: ['toMain', 'sqlite-status'] as const,
+  send: ['toMain'] as const,
   receive: ['fromMain', 'sqlite-ready', 'database-status'] as const,
   invoke: [
     'sqlite-is-available',
@@ -51,6 +51,7 @@ const VALID_CHANNELS = {
     'sqlite-open',
     'sqlite-close',
     'sqlite-is-db-open',
+    'sqlite-status',
     'get-path',
     'get-base-path'
   ] as const

electron/src/rt/sqlite-init.ts

@@ -868,5 +868,35 @@ export function setupSQLiteHandlers(): void {
     }
   });
 
+  // Handler for SQLite status updates
+  registerHandler('sqlite-status', async (_event, status: { status: string; database: string; timestamp: number }) => {
+    logger.debug('SQLite status update:', status);
+    try {
+      startDatabaseOperation();
+      if (!pluginState.instance) {
+        throw new SQLiteError('Plugin not initialized', 'sqlite-status');
+      }
+      
+      // Verify database is still open
+      const isOpen = await pluginState.instance.isDBOpen({ database: status.database });
+      if (!isOpen) {
+        throw new SQLiteError('Database not open', 'sqlite-status');
+      }
+      
+      logger.info('SQLite status update processed:', { 
+        status: status.status,
+        database: status.database,
+        timestamp: new Date(status.timestamp).toISOString()
+      });
+      
+      return { success: true, isOpen };
+    } catch (error) {
+      logger.error('SQLite status update failed:', error);
+      throw error;
+    } finally {
+      endDatabaseOperation();
+    }
+  });
+
   logger.info('SQLite IPC handlers setup complete');
 } 

src/main.electron.ts

@@ -54,15 +54,15 @@ const sqliteReady = new Promise<void>((resolve, reject) => {
     
     // Set timeout for this attempt
     initializationTimeout = setTimeout(() => {
-      if (retryCount < SQLITE_CONFIG.INITIALIZATION.RETRY_ATTEMPTS) {
+      if (retryCount < 3) { // Use same retry count as ElectronPlatformService
         retryCount++;
         logger.warn(`[Main Electron] SQLite initialization attempt ${retryCount} timed out, retrying...`);
-        setTimeout(attemptInitialization, SQLITE_CONFIG.INITIALIZATION.RETRY_DELAY_MS);
+        setTimeout(attemptInitialization, 1000); // Use same delay as ElectronPlatformService
       } else {
         logger.error("[Main Electron] SQLite initialization failed after all retries");
         reject(new Error("SQLite initialization timeout after all retries"));
       }
-    }, SQLITE_CONFIG.INITIALIZATION.TIMEOUT_MS);
+    }, 10000); // Use same timeout as ElectronPlatformService
 
     // Wait for electron bridge to be available
     const checkElectronBridge = () => {
@@ -143,27 +143,24 @@ const sqliteReady = new Promise<void>((resolve, reject) => {
               logger.debug("[Main Electron] [IPC:sqlite-query] Executing test query");
               const testQuery = await ipcRenderer.invoke('sqlite-query', {
                 database: 'timesafari',
-                statement: 'SELECT * FROM secret;'
+                statement: 'SELECT 1 as test;'  // Safe test query
               }) as SQLiteQueryResult;
               logger.info("[Main Electron] [IPC:sqlite-query] Test query successful:", { 
                 hasResults: Boolean(testQuery?.values),
-                resultCount: testQuery?.values?.length,
-                results: testQuery?.values
+                resultCount: testQuery?.values?.length
               });
               
-              // Close the database
-              logger.debug("[Main Electron] [IPC:sqlite-close] Closing database");
-              await ipcRenderer.invoke('sqlite-close', {
-                database: 'timesafari'
+              // Signal that SQLite is ready - database stays open
+              logger.debug("[Main Electron] [IPC:sqlite-status] Sending SQLite ready status");
+              await ipcRenderer.invoke('sqlite-status', { 
+                status: 'ready',
+                database: 'timesafari',
+                timestamp: Date.now()
               });
-              logger.info("[Main Electron] [IPC:sqlite-close] Database closed successfully");
+              logger.info("[Main Electron] SQLite ready status sent, database connection maintained");
 
-              // Close the connection
-              logger.debug("[Main Electron] [IPC:sqlite-close-connection] Closing database connection");
-              await ipcRenderer.invoke('sqlite-close-connection', {
-                database: 'timesafari'
-              });
-              logger.info("[Main Electron] [IPC:sqlite-close-connection] Database connection closed successfully");
+              // Remove the close operations - database stays open for component use
+              // Database will be closed during app shutdown
             } catch (error) {
               logger.error("[Main Electron] [IPC:*] SQLite test operation failed:", {
                 error,

src/services/platforms/ElectronPlatformService.ts

@@ -44,6 +44,26 @@ export interface SQLiteQueryResult {
   changes?: { changes: number; lastId?: number };
 }
 
+/**
+ * Shared SQLite initialization state
+ * Used to coordinate initialization between main and service
+ * 
+ * @author Matthew Raymer
+ */
+export interface SQLiteInitState {
+  isReady: boolean;
+  isInitializing: boolean;
+  error?: Error;
+  lastReadyCheck?: number;
+}
+
+// Singleton instance for shared state
+const sqliteInitState: SQLiteInitState = {
+  isReady: false,
+  isInitializing: false,
+  lastReadyCheck: 0
+};
+
 /**
  * Platform service implementation for Electron (desktop) platform.
  * Provides native desktop functionality through Electron and Capacitor plugins for:
@@ -51,6 +71,8 @@ export interface SQLiteQueryResult {
  * - Camera integration (TODO)
  * - SQLite database operations
  * - System-level features (TODO)
+ * 
+ * @author Matthew Raymer
  */
 export class ElectronPlatformService implements PlatformService {
   private sqlite: any;
@@ -58,53 +80,152 @@ export class ElectronPlatformService implements PlatformService {
   private isInitialized = false;
   private dbFatalError = false;
   private sqliteReadyPromise: Promise<void> | null = null;
+  private initializationTimeout: NodeJS.Timeout | null = null;
+
+  // SQLite initialization configuration
+  private static readonly SQLITE_CONFIG = {
+    INITIALIZATION: {
+      TIMEOUT_MS: 10000,  // 10 seconds for initial setup
+      RETRY_ATTEMPTS: 3,
+      RETRY_DELAY_MS: 1000,
+      READY_CHECK_INTERVAL_MS: 100  // How often to check if SQLite is already ready
+    }
+  };
 
   constructor() {
-    this.sqliteReadyPromise = new Promise<void>(async (resolve, reject) => {
-      try {
-        // Verify Electron API exposure first
-        await verifyElectronAPI();
-        logger.info('[ElectronPlatformService] Electron API verification successful');
+    this.sqliteReadyPromise = new Promise<void>((resolve, reject) => {
+      let retryCount = 0;
       
-        if (!window.electron?.ipcRenderer) {
-          logger.warn('[ElectronPlatformService] IPC renderer not available');
-          reject(new Error('IPC renderer not available'));
+      const cleanup = () => {
+        if (this.initializationTimeout) {
+          clearTimeout(this.initializationTimeout);
+          this.initializationTimeout = null;
+        }
+      };
+
+      const checkExistingReadiness = async (): Promise<boolean> => {
+        try {
+          if (!window.electron?.ipcRenderer) {
+            return false;
+          }
+
+          // Check if SQLite is already available
+          const isAvailable = await window.electron.ipcRenderer.invoke('sqlite-is-available');
+          if (!isAvailable) {
+            return false;
+          }
+
+          // Check if database is already open
+          const isOpen = await window.electron.ipcRenderer.invoke('sqlite-is-db-open', {
+            database: this.dbName
+          });
+
+          if (isOpen) {
+            logger.info('[ElectronPlatformService] SQLite is already ready and database is open');
+            sqliteInitState.isReady = true;
+            sqliteInitState.isInitializing = false;
+            sqliteInitState.lastReadyCheck = Date.now();
+            return true;
+          }
+
+          return false;
+        } catch (error) {
+          logger.warn('[ElectronPlatformService] Error checking existing readiness:', error);
+          return false;
+        }
+      };
+
+      const attemptInitialization = async () => {
+        cleanup(); // Clear any existing timeout
+
+        // Check if SQLite is already ready
+        if (await checkExistingReadiness()) {
+          this.isInitialized = true;
+          resolve();
           return;
         }
 
-        const timeout = setTimeout(() => {
-          reject(new Error('SQLite initialization timeout'));
-        }, 30000);
+        // If someone else is initializing, wait for them
+        if (sqliteInitState.isInitializing) {
+          logger.info('[ElectronPlatformService] Another initialization in progress, waiting...');
+          setTimeout(attemptInitialization, ElectronPlatformService.SQLITE_CONFIG.INITIALIZATION.READY_CHECK_INTERVAL_MS);
+          return;
+        }
         
-        window.electron.ipcRenderer.once('sqlite-ready', async () => {
-          clearTimeout(timeout);
-          logger.info('[ElectronPlatformService] Received SQLite ready signal');
+        try {
+          sqliteInitState.isInitializing = true;
           
-          try {
-            // Test SQLite operations after receiving ready signal
-            await testSQLiteOperations();
-            logger.info('[ElectronPlatformService] SQLite operations test successful');
+          // Verify Electron API exposure first
+          await verifyElectronAPI();
+          logger.info('[ElectronPlatformService] Electron API verification successful');
 
-            this.isInitialized = true;
-            resolve();
-          } catch (error) {
-            logger.error('[ElectronPlatformService] SQLite operations test failed:', error);
-            reject(error);
+          if (!window.electron?.ipcRenderer) {
+            logger.warn('[ElectronPlatformService] IPC renderer not available');
+            reject(new Error('IPC renderer not available'));
+            return;
           }
-        });
 
-        window.electron.ipcRenderer.once('database-status', (...args: unknown[]) => {
-          clearTimeout(timeout);
-          const status = args[0] as { status: string; error?: string };
-          if (status.status === 'error') {
-            this.dbFatalError = true;
-            reject(new Error(status.error || 'Database initialization failed'));
-          }
-        });
-      } catch (error) {
-        logger.error('[ElectronPlatformService] Initialization failed:', error);
-        reject(error);
-      }
+          // Set timeout for this attempt
+          this.initializationTimeout = setTimeout(() => {
+            if (retryCount < ElectronPlatformService.SQLITE_CONFIG.INITIALIZATION.RETRY_ATTEMPTS) {
+              retryCount++;
+              logger.warn(`[ElectronPlatformService] SQLite initialization attempt ${retryCount} timed out, retrying...`);
+              setTimeout(attemptInitialization, ElectronPlatformService.SQLITE_CONFIG.INITIALIZATION.RETRY_DELAY_MS);
+            } else {
+              cleanup();
+              sqliteInitState.isInitializing = false;
+              sqliteInitState.error = new Error('SQLite initialization timeout after all retries');
+              logger.error('[ElectronPlatformService] SQLite initialization failed after all retries');
+              reject(sqliteInitState.error);
+            }
+          }, ElectronPlatformService.SQLITE_CONFIG.INITIALIZATION.TIMEOUT_MS);
+
+          // Set up ready signal handler
+          window.electron.ipcRenderer.once('sqlite-ready', async () => {
+            cleanup();
+            logger.info('[ElectronPlatformService] Received SQLite ready signal');
+            
+            try {
+              // Test SQLite operations after receiving ready signal
+              await testSQLiteOperations();
+              logger.info('[ElectronPlatformService] SQLite operations test successful');
+              
+              this.isInitialized = true;
+              sqliteInitState.isReady = true;
+              sqliteInitState.isInitializing = false;
+              sqliteInitState.lastReadyCheck = Date.now();
+              resolve();
+            } catch (error) {
+              sqliteInitState.error = error as Error;
+              sqliteInitState.isInitializing = false;
+              logger.error('[ElectronPlatformService] SQLite operations test failed:', error);
+              reject(error);
+            }
+          });
+
+          // Set up error handler
+          window.electron.ipcRenderer.once('database-status', (...args: unknown[]) => {
+            cleanup();
+            const status = args[0] as { status: string; error?: string };
+            if (status.status === 'error') {
+              this.dbFatalError = true;
+              sqliteInitState.error = new Error(status.error || 'Database initialization failed');
+              sqliteInitState.isInitializing = false;
+              reject(sqliteInitState.error);
+            }
+          });
+
+        } catch (error) {
+          cleanup();
+          sqliteInitState.error = error as Error;
+          sqliteInitState.isInitializing = false;
+          logger.error('[ElectronPlatformService] Initialization failed:', error);
+          reject(error);
+        }
+      };
+
+      // Start first initialization attempt
+      attemptInitialization();
     });
   }