Enhance database management with cleanup and reset scripts

- Added a new database cleanup script to remove all data while preserving the schema, facilitating a clean state before seeding.
- Updated package.json to include new commands for database cleaning and resetting.
- Modified schema definitions to use an array format for index and constraint definitions, improving clarity and consistency.
- Updated product seeding logic to utilize role-based assignments directly from mock data, enhancing flexibility in product-role relationships.

server/database/clean.ts

@@ -0,0 +1,75 @@
+/**
+ * Database Clean Script
+ *
+ * Removes all data from the database while preserving the schema.
+ * Useful for resetting to a clean state before seeding.
+ * Run with: pnpm db:clean
+ */
+
+import 'dotenv/config'
+import { drizzle } from 'drizzle-orm/postgres-js'
+import { sql } from 'drizzle-orm'
+import postgres from 'postgres'
+
+async function clean() {
+  // Get database connection from environment
+  const connectionString = process.env.DATABASE_URL
+  if (!connectionString) {
+    throw new Error('DATABASE_URL environment variable is not set')
+  }
+
+  console.log('🧹 Starting database cleanup...\n')
+
+  // Create database connection
+  const client = postgres(connectionString)
+  const db = drizzle(client)
+
+  try {
+    // Delete all data in reverse order of dependencies
+    console.log('Deleting product-role assignments...')
+    await db.execute(sql`DELETE FROM product_role_visibility`)
+
+    console.log('Deleting user-role assignments...')
+    await db.execute(sql`DELETE FROM user_roles`)
+
+    console.log('Deleting order items...')
+    await db.execute(sql`DELETE FROM order_items`)
+
+    console.log('Deleting orders...')
+    await db.execute(sql`DELETE FROM orders`)
+
+    console.log('Deleting cart items...')
+    await db.execute(sql`DELETE FROM cart_items`)
+
+    console.log('Deleting carts...')
+    await db.execute(sql`DELETE FROM carts`)
+
+    console.log('Deleting products...')
+    await db.execute(sql`DELETE FROM products`)
+
+    console.log('Deleting roles...')
+    await db.execute(sql`DELETE FROM roles`)
+
+    console.log('Deleting users...')
+    await db.execute(sql`DELETE FROM users`)
+
+    console.log('\n✅ Database cleaned successfully!')
+    console.log('💡 Run `pnpm db:seed` to populate with fresh data')
+  } catch (error) {
+    console.error('❌ Error cleaning database:', error)
+    throw error
+  } finally {
+    // Close database connection
+    await client.end()
+  }
+}
+
+// Run clean function
+clean()
+  .then(() => {
+    process.exit(0)
+  })
+  .catch((error) => {
+    console.error('Fatal error:', error)
+    process.exit(1)
+  })