feat: implement one-time admin token generation and upgrade process

src/instrumentation.ts

@@ -1,9 +1,15 @@
-import { migrate } from 'drizzle-orm/better-sqlite3/migrator';
-import db from '@/lib/db';
-import { join } from 'path';
+import { eq } from 'drizzle-orm';
 
 export async function register() {
   if (process.env.NEXT_RUNTIME === 'nodejs') {
+    // Import nodejs-only modules dynamically
+    const { migrate } = await import('drizzle-orm/better-sqlite3/migrator');
+    const { join } = await import('path');
+    const { randomBytes } = await import('crypto');
+    const { count } = await import('drizzle-orm');
+    const db = (await import('@/lib/db')).default;
+    const { user } = await import('@/lib/model/auth-schema');
+
     try {
       console.log('Running database migrations...');
 
@@ -13,8 +19,30 @@ export async function register() {
       migrate(db, { migrationsFolder });
 
       console.log('✓ Database migrations completed successfully');
+
+      // Check if any admin exists
+      const adminCount = await db.select({ count: count() }).from(user).where(eq(user.admin, true));
+      const hasAdmin = adminCount.length > 0 && adminCount[0].count > 0;
+
+      // If no admin exists, generate a one-time token
+      if (!hasAdmin) {
+        const token = randomBytes(32).toString('hex');
+        process.env.ADMIN_SIGNUP_TOKEN = token;
+        console.log('\n╔════════════════════════════════════════════════════════════════╗');
+        console.log('║                   ADMIN TOKEN GENERATED                        ║');
+        console.log('╠════════════════════════════════════════════════════════════════╣');
+        console.log(`║ Token: ${token}                               ║`);
+        console.log('║                                                                ║');
+        console.log('║ This token can be used ONCE to upgrade a user to admin.        ║');
+        console.log('║ After the first use, it will become invalid.                   ║');
+        console.log('║                                                                ║');
+        console.log('║ 1. Sign in with your account                                   ║');
+        console.log('║ 2. Try to access /admin                                        ║');
+        console.log('║ 3. Enter this token when prompted                              ║');
+        console.log('╚════════════════════════════════════════════════════════════════╝\n');
+      }
     } catch (error) {
-      console.error('Failed to run database migrations:', error);
+      console.error('Failed to initialize app:', error);
       process.exit(1);
     }
   }