fix: Make participants field nullable and improve database error handling

src/bot/utils/api.ts

@@ -33,8 +33,19 @@ export async function fetchGroups(communityId: string): Promise<Set<string>> {
 
           // Save the group to the database
           execute(
-            'INSERT OR REPLACE INTO groups (id, name, linked_parent) VALUES (?, ?, ?)',
-            [group.id, group.subject || 'Unnamed Group', group.linkedParent] // Provide a default name if missing
+            `INSERT INTO groups (id, name, participants, linked_parent, last_updated)
+             VALUES (?, ?, ?, ?, ?)
+             ON CONFLICT(id) DO UPDATE SET
+               name = excluded.name,
+               participants = excluded.participants,
+               last_updated = excluded.last_updated`,
+            [
+              group.id,
+              group.subject || 'Unnamed Group',
+              group.participants ? JSON.stringify(group.participants) : null,
+              group.linkedParent,
+              new Date().toISOString()
+            ]
           );
         }
       }

src/database/db.ts

@@ -12,9 +12,16 @@ if (!fs.existsSync(dbDir)) {
 const dbPath = path.join(dbDir, 'bot.db');
 export const db = new Database(dbPath);
 
-// Run the schema script
+// Run the schema script with error handling
+try {
   const schema = fs.readFileSync(path.join(__dirname, 'schema.sql'), 'utf8');
+  db.exec('PRAGMA foreign_keys=OFF;'); // Disable foreign keys during schema changes
   db.exec(schema);
+  db.exec('PRAGMA foreign_keys=ON;'); // Re-enable foreign keys
+} catch (error) {
+  console.error('Error initializing database schema:', error);
+  process.exit(1);
+}
 
 // Helper function to query the database
 export function query(sql: string, params: any[] = []) {

src/database/schema.sql

@@ -2,7 +2,7 @@
 CREATE TABLE IF NOT EXISTS groups (
   id TEXT PRIMARY KEY, -- WhatsApp group ID
   name TEXT NOT NULL DEFAULT 'Unnamed group',
-  participants TEXT NOT NULL, -- JSON array of phone numbers
+  participants TEXT DEFAULT NULL, -- JSON array of phone numbers (nullable)
   linked_parent TEXT, -- Parent community ID
   last_updated TEXT -- ISO 8601 timestamp of last update
 );