API, Backend & Frontend

backend/migrate.js

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+import sqlite3 from 'sqlite3';
+import path from 'path';
+import { fileURLToPath } from 'url';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+const dbPath = path.join(__dirname, 'database.sqlite');
+const db = new sqlite3.Database(dbPath);
+
+console.log('🔄 Starting database migration...');
+
+// Promisify database operations
+function dbRun(sql, params = []) {
+  return new Promise((resolve, reject) => {
+    db.run(sql, params, function(err) {
+      if (err) reject(err);
+      else resolve({ lastID: this.lastID, changes: this.changes });
+    });
+  });
+}
+
+function dbAll(sql, params = []) {
+  return new Promise((resolve, reject) => {
+    db.all(sql, params, (err, rows) => {
+      if (err) reject(err);
+      else resolve(rows);
+    });
+  });
+}
+
+async function migrate() {
+  try {
+    // Check if old medicines table exists
+    const tables = await dbAll(`
+      SELECT name FROM sqlite_master 
+      WHERE type='table' AND name='medicines'
+    `);
+
+    if (tables.length > 0) {
+      console.log('📋 Found old medicines table');
+      
+      // Check if we need to migrate pharmacy_medicines
+      const columns = await dbAll(`PRAGMA table_info(pharmacy_medicines)`);
+      const hasMedicineId = columns.some(col => col.name === 'medicine_id');
+      const hasNregistro = columns.some(col => col.name === 'medicine_nregistro');
+
+      if (hasMedicineId && !hasNregistro) {
+        console.log('🔄 Migrating pharmacy_medicines table...');
+        
+        // Create new table with updated schema
+        await dbRun(`
+          CREATE TABLE pharmacy_medicines_new (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            pharmacy_id INTEGER NOT NULL,
+            medicine_nregistro TEXT NOT NULL,
+            medicine_name TEXT,
+            price REAL,
+            stock INTEGER DEFAULT 0,
+            FOREIGN KEY (pharmacy_id) REFERENCES pharmacies(id),
+            UNIQUE(pharmacy_id, medicine_nregistro)
+          )
+        `);
+
+        console.log('✅ Created new pharmacy_medicines table');
+        
+        // Copy data if any exists (though it will be invalid without nregistro)
+        const oldData = await dbAll('SELECT * FROM pharmacy_medicines');
+        console.log(`📦 Found ${oldData.length} old pharmacy-medicine relationships`);
+        
+        if (oldData.length > 0) {
+          console.log('⚠️  Warning: Old medicine relationships will be lost.');
+          console.log('   You will need to re-link medicines using the CIMA database.');
+        }
+        
+        // Drop old table
+        await dbRun('DROP TABLE pharmacy_medicines');
+        
+        // Rename new table
+        await dbRun('ALTER TABLE pharmacy_medicines_new RENAME TO pharmacy_medicines');
+        
+        console.log('✅ Migrated pharmacy_medicines table');
+      } else if (hasNregistro) {
+        console.log('✅ pharmacy_medicines table already migrated');
+      }
+
+      // We can keep the old medicines table for reference, or drop it
+      console.log('ℹ️  Old medicines table can be kept for reference or deleted manually');
+      console.log('   To delete: sqlite3 database.sqlite "DROP TABLE IF EXISTS medicines;"');
+    } else {
+      console.log('✅ No old medicines table found - creating new schema');
+      
+      // Create pharmacy_medicines table with new schema
+      await dbRun(`
+        CREATE TABLE IF NOT EXISTS pharmacy_medicines (
+          id INTEGER PRIMARY KEY AUTOINCREMENT,
+          pharmacy_id INTEGER NOT NULL,
+          medicine_nregistro TEXT NOT NULL,
+          medicine_name TEXT,
+          price REAL,
+          stock INTEGER DEFAULT 0,
+          FOREIGN KEY (pharmacy_id) REFERENCES pharmacies(id),
+          UNIQUE(pharmacy_id, medicine_nregistro)
+        )
+      `);
+      
+      console.log('✅ Created pharmacy_medicines table');
+    }
+
+    console.log('');
+    console.log('✨ Migration completed successfully!');
+    console.log('');
+    console.log('Next steps:');
+    console.log('1. Install Redis: brew install redis (macOS) or apt-get install redis-server (Linux)');
+    console.log('2. Start Redis: redis-server');
+    console.log('3. Install dependencies: npm install');
+    console.log('4. Start the server: npm start');
+    
+  } catch (error) {
+    console.error('❌ Migration failed:', error);
+    process.exit(1);
+  } finally {
+    db.close();
+  }
+}
+
+migrate();