import { Module } from '@nestjs/common';
import { ConfigModule, ConfigService } from '@nestjs/config';
import * as admin from 'firebase-admin';

@Module({
  imports: [ConfigModule],
  providers: [
    {
      provide: 'FIREBASE_ADMIN',
      inject: [ConfigService],
      useFactory: (configService: ConfigService) => {
        const serviceAccount = {
          projectId: configService.get<string>('FIREBASE_PROJECT_ID'),
          clientEmail: configService.get<string>('FIREBASE_CLIENT_EMAIL'),
          privateKey: configService.get<string>('FIREBASE_PRIVATE_KEY')?.replace(/\\n/g, '\n'),
        };

        if (!admin.apps.length) {
          admin.initializeApp({
            credential: admin.credential.cert(serviceAccount),
          });
        }

        return admin;
      },
    },
  ],
  exports: ['FIREBASE_ADMIN'],
})
export class FirebaseAdminModule {}