import { forwardRef, Module } from '@nestjs/common';
import { AuthService } from './auth.service';
import { AuthController } from './auth.controller';
import { DbModule } from 'src/db/db.module';
import { ConfigService } from '@nestjs/config';
import { JwtService } from '@nestjs/jwt';
import { OracleModule } from 'src/oracle/oracle.module';

@Module({
  imports: [DbModule, forwardRef(() => OracleModule)],
  providers: [
    AuthService,
    {
      provide: "REGISTER_SIGN_JWT",
      useFactory: (config: ConfigService) => {
        const base64Key = config.get<string>('JWT_REGISTER_PRIVATE_KEY');
        if (!base64Key) {
          throw new Error('JWT_REGISTER_PRIVATE_KEY is not defined in the config');
        }
        const secretKey = Buffer.from(base64Key, 'base64').toString('utf-8');

        const expiry = config.get<string>('JWT_REGISTER_EXPIRY');

        if (!expiry) {
          throw new Error('JWT_REGISTER_PRIVATE_KEY is not defined in the config');
        }

        return new JwtService({
          secret: secretKey,
          signOptions: {
            expiresIn: expiry,
            algorithm: 'ES384'
          },
        })
      },
      inject: [ConfigService],
    },
    {
      provide: "REGISTER_VERIFY_JWT",
      useFactory: (config: ConfigService) => {
        const base64Key = config.get<string>('JWT_REGISTER_PUBLIC_KEY');
        if (!base64Key) {
          throw new Error('JWT_REGISTER_PRIVATE_KEY is not defined in the config');
        }
        const secretKey = Buffer.from(base64Key, 'base64').toString('utf-8');

        return new JwtService({
          secret: secretKey,
          verifyOptions: {
            algorithms: ['ES384']
          }
        })
      },
      inject: [ConfigService],
    }
  ],
  controllers: [AuthController],
  exports: [AuthService]
})
export class AuthModule { }