Squash merge feature/fts into master

lib/db.dart

@@ -33,6 +33,29 @@ CREATE TABLE IF NOT EXISTS settings (
   key TEXT PRIMARY KEY NOT NULL,
   value TEXT NOT NULL
 );
+
+-- Create virtual FTS5 table for searching notes content
+CREATE VIRTUAL TABLE IF NOT EXISTS notes_fts USING fts5(
+  content,
+  date,
+  content='notes',
+  content_rowid='id'
+);
+
+-- Trigger to keep FTS table in sync with notes table when inserting
+CREATE TRIGGER IF NOT EXISTS notes_ai AFTER INSERT ON notes BEGIN
+  INSERT INTO notes_fts(rowid, content, date) VALUES (new.id, new.content, new.date);
+END;
+
+-- Trigger to keep FTS table in sync when deleting notes
+CREATE TRIGGER IF NOT EXISTS notes_ad AFTER DELETE ON notes BEGIN
+  DELETE FROM notes_fts WHERE rowid = old.id;
+END;
+
+-- Trigger to keep FTS table in sync when updating notes
+CREATE TRIGGER IF NOT EXISTS notes_au AFTER UPDATE ON notes BEGIN
+  UPDATE notes_fts SET content = new.content, date = new.date WHERE rowid = old.id;
+END;
 ''';
 
   static Future<String> _getDatabasePath() async {
@@ -44,7 +67,7 @@ CREATE TABLE IF NOT EXISTS settings (
       if (home == null) {
         throw Exception('Could not find home directory');
       }
-      debugPrint('Home directory found: home');
+      debugPrint('Home directory found: $home');
 
       final dbDir = Directory(path.join(home, settingsDir));
       if (!await dbDir.exists()) {
@@ -58,7 +81,7 @@ CREATE TABLE IF NOT EXISTS settings (
     } else {
       // Default path for other platforms
       final databasesPath = await databaseFactoryFfi.getDatabasesPath();
-      debugPrint('Using default databases path: databasesPath');
+      debugPrint('Using default databases path: $databasesPath');
       return path.join(databasesPath, dbFileName);
     }
   }
@@ -68,7 +91,7 @@ CREATE TABLE IF NOT EXISTS settings (
     sqfliteFfiInit();
 
     final dbPath = await _getDatabasePath();
-    debugPrint('Database path: dbPath');
+    debugPrint('Database path: $dbPath');
 
     try {
       db = await databaseFactoryFfi.openDatabase(
@@ -84,7 +107,7 @@ CREATE TABLE IF NOT EXISTS settings (
       );
       debugPrint('Database opened and initialized');
     } catch (e) {
-      debugPrint('Failed to initialize database: e');
+      debugPrint('Failed to initialize database: $e');
       rethrow;
     }
   }
@@ -104,11 +127,73 @@ CREATE TABLE IF NOT EXISTS settings (
   }
 
   static Future<void> setSetting(String key, String value) async {
-    await db.insert(
-      'settings',
-      {'key': key, 'value': value},
-      conflictAlgorithm: ConflictAlgorithm.replace,
-    );
+    await db.insert('settings', {
+      'key': key,
+      'value': value,
+    }, conflictAlgorithm: ConflictAlgorithm.replace);
     debugPrint("Setting updated: $key = $value");
   }
+
+  // Search notes using FTS
+  static Future<List<Map<String, dynamic>>> searchNotes(String query) async {
+    try {
+      if (query.trim().isEmpty) {
+        return [];
+      }
+
+      // Process the query for partial word matching
+      // Split into individual terms, filter empty ones
+      List<String> terms =
+          query
+              .trim()
+              .split(RegExp(r'\s+'))
+              .where((term) => term.isNotEmpty)
+              .toList();
+
+      if (terms.isEmpty) {
+        return [];
+      }
+
+      // Add wildcards to each term for prefix matching (e.g., "fuck*" will match "fucked")
+      // Join terms with AND for all-term matching (results must contain ALL terms)
+      String ftsQuery = terms
+          .map((term) {
+            // Remove any special characters that might break the query
+            String sanitizedTerm = term.replaceAll(RegExp(r'[^\w]'), '');
+            if (sanitizedTerm.isEmpty) return '';
+
+            // Add wildcard for stemming/prefix matching
+            return '$sanitizedTerm*';
+          })
+          .where((term) => term.isNotEmpty)
+          .join(' AND ');
+
+      if (ftsQuery.isEmpty) {
+        debugPrint('Query was sanitized to empty string');
+        return [];
+      }
+
+      debugPrint('FTS query: "$ftsQuery"');
+
+      // Execute the FTS query with AND logic
+      final List<Map<String, dynamic>> results = await db.rawQuery(
+        '''
+        SELECT n.id, n.date, n.content, snippet(notes_fts, 0, '<b>', '</b>', '...', 20) as snippet
+        FROM notes_fts
+        JOIN notes n ON notes_fts.rowid = n.id
+        WHERE notes_fts MATCH ?
+        ORDER BY n.date DESC
+        LIMIT 100
+      ''',
+        [ftsQuery],
+      );
+
+      debugPrint('Search query "$ftsQuery" returned ${results.length} results');
+      return results;
+    } catch (e) {
+      debugPrint('Search failed: $e');
+      // Return empty results rather than crashing on malformed queries
+      return [];
+    }
+  }
 }