@next-nest-auth/nestauth/src/nestauth.module.ts

NestAuth is an authentication solution for NestJS applications, designed to handle user login, session management, and token-based authentication (JWT). It integrates seamlessly with Next.js and other frontends to provide a unified authentication system,

import { Module, DynamicModule, Provider, forwardRef } from "@nestjs/common";
import { ConfigModule } from "@nestjs/config";
import { NestAuthService } from "./nestauth.service";
import { createDynamicController } from "./nestauth.controller";
import { NestAuthInterface, NestAuthModuleOptions } from "./nestauth.interface";
import { PassportModule } from "@nestjs/passport";
import { JwtModule, JwtService } from "@nestjs/jwt";
import { NestAuthJwtStrategy } from "./nestauth-jwt.strategy";
// import { NestAuthLocalStrategy } from "./nestauth-local.strategy";
import { NestAuthGoogleStrategy } from "./nestauth-google.strategy";
import { NestAuthFacebookStrategy } from "./nestauth-facebook.strategy";
import { StringValue } from "ms";
import { createLocalStrategy } from "./nestauth-local.strategy";
import { createLocalGuard } from "./nestauth-local.guard";

@Module({
  imports: [PassportModule, ConfigModule.forRoot({})],
})
export class NestAuthModule {
  static forRoot(options: NestAuthModuleOptions): DynamicModule {
    const JwtSecretProvider: Provider = {
      provide: "JWT_SECRET",
      useValue: options.jwtSecret || "60s",
    };

    const JwtExpiresInProvider: Provider = {
      provide: "JWT_EXPIRES_IN",
      useValue: options.jwtExpiresIn,
    };

    const JwtRefreshTokenExpiresInProvider: Provider = {
      provide: "JWT_REFRESH_TOKEN_EXPIRES_IN",
      useValue: options.jwtRefreshTokenExpiresIn,
    };

    const controllerPath = options.routePrefix
      ? `${options.routePrefix.replace(/^\/|\/$/g, "")}/nestauth`
      : "nestauth";

    const pathKey = controllerPath.replaceAll("/", "_").toUpperCase();

    const userServiceToken = `NEST_AUTH_USER_SERVICE_${pathKey}`;
    const nestAuthServiceToken = `NEST_AUTH_SERVICE_${pathKey}`;

    const strategyName = `${pathKey}-local`;

    const LocalStrategy = createLocalStrategy(strategyName, userServiceToken);

    const LocalGuard = createLocalGuard(strategyName);

    // console.log("controllerPath", controllerPath);
    // console.log("pathKey", pathKey);
    // console.log("userServiceToken", userServiceToken);
    // console.log("nestAuthServiceToken", nestAuthServiceToken);

    // console.log("------------------------------------------");

    const controller = createDynamicController(
      controllerPath,
      nestAuthServiceToken,
      LocalGuard,
    );

    return {
      module: NestAuthModule,
      imports: [
        JwtModule.registerAsync({
          imports: [],
          inject: [],
          useFactory: async () => ({
            secret: options.jwtSecret,
            signOptions: {
              expiresIn: options.jwtExpiresIn as StringValue | number,
            },
          }),
        }),
        forwardRef(() => options.UserModule),
      ],
      providers: [
        {
          provide: userServiceToken,
          useExisting: options.UserService,
        },
        {
          provide: nestAuthServiceToken,
          useFactory: (
            jwtService: JwtService,
            userService: NestAuthInterface,
            jwtExpiresIn: StringValue | number,
            jwtRefreshTokenExpiresIn: StringValue | number,
          ) =>
            new NestAuthService(
              jwtService,
              userService,
              jwtExpiresIn,
              jwtRefreshTokenExpiresIn,
            ),
          inject: [
            JwtService,
            userServiceToken,
            "JWT_EXPIRES_IN",
            "JWT_REFRESH_TOKEN_EXPIRES_IN",
          ],
        },
        NestAuthJwtStrategy,
        NestAuthGoogleStrategy,
        NestAuthFacebookStrategy,
        JwtSecretProvider,
        JwtExpiresInProvider,
        JwtRefreshTokenExpiresInProvider,
        LocalStrategy,
        LocalGuard,

        // {
        //     provide: APP_FILTER,
        //     useClass: HttpExceptionFilter,
        // },
      ],
      exports: [nestAuthServiceToken],
      controllers: [controller],
    };
  }
}