import {
  Body,
  Controller,
  Headers,
  Post,
  HttpCode,
  HttpStatus,
  Inject,
  UseFilters,
  Get,
  UseGuards,
  Redirect,
  Req,
  Param,
} from '@nestjs/common';
import {
  ApiHeaders,
  ApiOkResponse,
  ApiSecurity,
  ApiTags,
} from '@nestjs/swagger';
import {
  AuthChangePasswordRequest,
  AuthResetPasswordRequest,
  AuthVerifyResetPasswordCodeRequest,
  AuthConfirmResetPasswordRequest,
  AuthEnableTotpMfaRequest,
  AuthDisableTotpMfaRequest,
  AuthVerifyTotpMfaRequest
} from '@dadosfera/protospack-v2/dist/lib/Duc/interfaces/messages';

import { PERMISSIONS_GROUPS } from 'src/authentication/permissions.enum';
import {
  Authenticated,
  RequireAllPermissions,
} from 'src/decorators/authentication.decorator';
import { AuthClientService } from './auth.service';
import { DadosferaLogger } from '@dadosfera/dadosfera-logs';
import { GrpcToHttpExceptionFilter } from '../../error/grpc-to-http-exception.filter';
import { RequestUser, User } from 'src/decorators/user.decorator';
import {
  AuthRefreshAccessTokenReq,
  AuthRefreshAccessTokenRes,
  AuthSignInReq,
  AuthSignInRes,
  BulkEditRequest,
} from './dtos/login';
import { PackTheMetadata } from 'src/utils/PackTheMetadata';
import { AuthGuard } from '@nestjs/passport';
import { Request } from 'express';
import ErrorCodes, { OauthErrors } from 'src/utils/errorCodes';
import jwt from 'jsonwebtoken';
import { LanguageEnum } from 'src/utils/languages.enum';
import { Language } from 'src/decorators/language.decorator';
import { ApiInternalOnlyEndpoint } from 'src/decorators/swagger.decorator';

@ApiTags('Auth')
@ApiHeaders([{ name: 'dadosfera-lang', enum: LanguageEnum, required: false }])
@UseFilters(new GrpcToHttpExceptionFilter())
@Controller('auth')
export class AuthController {
  logger: DadosferaLogger;
  redirectUrl: string;

  constructor(
    @Inject(DadosferaLogger)
    dadosferaLogger: DadosferaLogger,
    private authClient: AuthClientService,
  ) {
    this.logger = dadosferaLogger.logger;

    switch (process.env.ENV) {
      case 'stg':
        this.redirectUrl = `https://app.${process.env.ENV}.dadosfera.ai/auth/login`;
        break;
      case 'prd':
        this.redirectUrl = `https://app.dadosfera.ai/auth/login`;
        break;
      default:
        this.redirectUrl = `http://localhost:4200/auth/login`;
    }
  }

  @Post('sign-in')
  @HttpCode(HttpStatus.OK)
  async signIn(
    @Body() { username, password, totp }: AuthSignInReq,
    @Language() language: LanguageEnum,
  ): Promise<AuthSignInRes> {
    this.logger.info('/auth - SignIn');
    const metadata = PackTheMetadata({ language });
    this.logger.info('metadata: ' + JSON.stringify(metadata.toJSON()));
    return this.authClient.signIn({ username, password, totp }, metadata);
  }

  @Post('refresh-access-token')
  @HttpCode(HttpStatus.OK)
  @ApiOkResponse({ type: AuthRefreshAccessTokenRes })
  async refreshAccessToken(
    @Body() body: AuthRefreshAccessTokenReq,
    @Language() language: LanguageEnum,
    @Headers('origin') origin: string,
  ) {
    this.logger.info('/auth - RefreshAccessToken');
    const { refreshToken, userId } = body;
    const frontHost = origin.replace(/^https?:\/\//, '');
    const metadata = PackTheMetadata({
      language,
      custom_host: frontHost,
    });

    return this.authClient.refreshAccessToken({ refreshToken, userId }, metadata);
  }

  @ApiInternalOnlyEndpoint()
  @Post('/sso/snowflake')
  @RequireAllPermissions(PERMISSIONS_GROUPS.SNOWFLAKE.permissions.OPEN)
  @HttpCode(HttpStatus.OK)
  async snowflakeSignIn(
    @User() user: RequestUser,
    @Body('RelayState') relayState: string,
  ) {
    this.logger.info('/auth - snowflakeSignIn');

    return this.authClient.snowflakeSignIn({
      userId: user.user_id,
      relayState,
    });
  }

  @ApiInternalOnlyEndpoint()
  @Post('change-password')
  @HttpCode(HttpStatus.OK)
  async changePassword(
    @Body() body: AuthChangePasswordRequest,
    @Headers() headers,
  ) {
    this.logger.info('/auth - change-password');

    const { oldPassword, newPassword } = body;
    const { authorization: accessToken } = headers;

    return this.authClient.changePassword({
      accessToken,
      oldPassword,
      newPassword,
    });
  }

  @ApiInternalOnlyEndpoint()
  @Post('reset-password')
  @HttpCode(HttpStatus.OK)
  async resetPassword(
    @Body() body: AuthResetPasswordRequest,
    @Language() language: LanguageEnum,
  ) {
    this.logger.info('/auth - reset-password');
    const metadata = PackTheMetadata({
      language: language,
    });

    const { username } = body;

    return this.authClient.resetPassword({ username }, metadata);
  }

  @ApiInternalOnlyEndpoint()
  @Post('verify-reset-password-code')
  @HttpCode(HttpStatus.OK)
  async verifyResetPasswordCode(
    @Body() body: AuthVerifyResetPasswordCodeRequest,
  ) {
    this.logger.info('/auth - verify-reset-password-code');

    const { username, code } = body;

    return this.authClient.verifyResetPasswordCode({ username, code });
  }

  @ApiInternalOnlyEndpoint()
  @Post('confirm-reset-password')
  @HttpCode(HttpStatus.OK)
  async confirmResetPassword(
    @Body() body: AuthConfirmResetPasswordRequest,
    @Headers('origin') origin: string,
  ) {
    this.logger.info('/auth - confirm-reset-password');
    const frontHost = origin.replace(/^https?:\/\//, '');
    const metadata = PackTheMetadata({ custom_host: frontHost });
    const { username, code, newPassword } = body;

    return this.authClient.confirmResetPassword(
      {
        username,
        code,
        newPassword,
      },
      metadata,
    );
  }

  @ApiInternalOnlyEndpoint()
  @Post('enable-totp')
  @HttpCode(HttpStatus.OK)
  async enableTotpMFA(
    @Body() body: AuthEnableTotpMfaRequest,
    @Headers() headers,
  ) {
    this.logger.info('/auth - enable-totp');

    const { password } = body;
    const { authorization: accessToken } = headers;

    return this.authClient.enableTotpMFA({ accessToken, password });
  }

  @ApiInternalOnlyEndpoint()
  @Post('disable-totp')
  @HttpCode(HttpStatus.OK)
  async disableTotpMFA(
    @Body() body: AuthDisableTotpMfaRequest,
    @Headers() headers,
  ) {
    this.logger.info('/auth - disable-totp');

    const { password } = body;
    const { authorization: accessToken } = headers;

    return this.authClient.disableTotpMFA({ accessToken, password });
  }

  @ApiInternalOnlyEndpoint()
  @Post('dismiss-totp')
  @HttpCode(HttpStatus.OK)
  async dismissTotpMFA(@Headers() headers) {
    this.logger.info('/auth - disable-totp');

    const { authorization: accessToken } = headers;

    return this.authClient.dismissTotpMFA({ accessToken });
  }

  @ApiInternalOnlyEndpoint()
  @Post('verify-totp')
  @HttpCode(HttpStatus.OK)
  async verifyTotp(@Body() body: AuthVerifyTotpMfaRequest, @Headers() headers) {
    this.logger.info('/auth - enable-totp');

    const { totp } = body;
    const { authorization: accessToken } = headers;

    return this.authClient.verifyTotp({ accessToken, totp });
  }

  @ApiInternalOnlyEndpoint()
  @Authenticated()
  @ApiSecurity('access-token')
  @Get('verify-access-token')
  verifyAccessToken() {
    return { access_token_status: 'valid' };
  }

  @ApiInternalOnlyEndpoint()
  @Get('session/:session')
  getSession(@Param('session') session: string) {
    return this.authClient.getSession(session);
  }

  @ApiInternalOnlyEndpoint()
  @Get('oauth/google')
  @UseGuards(AuthGuard('google-login'))
  googleOauth() {
    this.logger.info('/oauth/google');
    return true;
  }

  @ApiInternalOnlyEndpoint()
  @Get('oauth/google/callback')
  @UseGuards(AuthGuard('google-login'))
  @Redirect()
  async googleOauthCallback(@Req() req) {
    const { url, email, token, language = 'pt-br' } = await this.callback(req);
    if (url.searchParams.get('error')) {
      this.logger.error('/oauth/google - ERROR');
      return { url: url.href };
    }

    await this.authClient
      .oauthSignIn({
        username: email,
        token,
      })
      .then(({ session }) => {
        this.logger.info('/oauth/google - SUCESS');
        url.searchParams.set('session', session);
      })
      .catch((err) => {
        this.logger.error('/oauth/google - ERROR');
        let error = OauthErrors.INVALID_CREDENTIALS[language].error;
        let error_description =
          OauthErrors.INVALID_CREDENTIALS[language].error_description;
        switch (err.details) {
          case ErrorCodes.USER.NOT_FOUND:
            error = OauthErrors.USER_NOT_FOUND[language].error;
            error_description =
              OauthErrors.USER_NOT_FOUND[language].error_description(email);
            break;
          case ErrorCodes.AUTH.UNAUTHORIZED:
            error = OauthErrors.INVALID_SESSION[language].error;
            error_description =
              OauthErrors.INVALID_SESSION[language].error_description;
            break;
        }
        url.searchParams.set('error', error);
        url.searchParams.set('error_description', error_description);
        return null;
      });
    return { url: url.href };
  }

  async callback(req: Request) {
    const { error, state } = req.query;
    const { authInfo } = req;
    const url = new URL(this.redirectUrl);
    let email, token, error_title, error_description;
    let language: 'pt-br' | 'en-us' = 'pt-br';

    const stateObject = jwt.verify(
      state as string,
      process.env.JWT_PRIVATE_KEY,
    );
    if (typeof stateObject != 'string') language = stateObject.language;

    if (error || !authInfo) {
      this.logger.error(error);
      if (!authInfo) this.logger.error('No authInfo', { request: req });

      error_title = OauthErrors.INVALID_CREDENTIALS[language].error;
      error_description =
        OauthErrors.INVALID_CREDENTIALS[language].error_description;
      if (error) error_description += ` - [${error}]`;
    } else {
      const { accessToken } = authInfo as any;
      const { _json: userInfo } = req.user as any;

      email = userInfo.email;
      token = accessToken;
    }

    if (error_title) {
      url.searchParams.set('error', error_title);
      url.searchParams.set('error_description', error_description);
    }

    return { token, email, url, language };
  }

  @ApiInternalOnlyEndpoint()
  @Post('users/block')
  @RequireAllPermissions(PERMISSIONS_GROUPS.USERS.permissions.ADMIN)
  @HttpCode(HttpStatus.OK)
  async blockUsers(
    @Language() language: LanguageEnum,
    @User() user: RequestUser,
    @Body() body: BulkEditRequest,
  ) {
    this.logger.info('blockUsers - Starting request');

    try {
      const metadata = PackTheMetadata(user);

      this.logger.debug('Calling blockUsers service', {
        metadata: {
          access_token: metadata.get('access_token'),
          language: metadata.get('language'),
        },
      });

      const result = await this.authClient.blockUsers(body.users, metadata);
      this.logger.info('blockUsers - Success', { result });
      return result;
    } catch (error) {
      this.logger.error('blockUsers - Error', {
        error: error.message,
        stack: error.stack,
      });
      throw error;
    }
  }

  @ApiInternalOnlyEndpoint()
  @Post('users/unblock')
  @RequireAllPermissions(PERMISSIONS_GROUPS.USERS.permissions.ADMIN)
  @HttpCode(HttpStatus.OK)
  async unblockUsers(
    @Language() language: LanguageEnum,
    @User() user: RequestUser,
    @Body() body: BulkEditRequest,
  ) {
    this.logger.info('unblockUsers');
    const metadata = PackTheMetadata(user);

    return this.authClient.unblockUsers(body.users, metadata);
  }

  @ApiInternalOnlyEndpoint()
  @Post('users/reset')
  @RequireAllPermissions(PERMISSIONS_GROUPS.USERS.permissions.ADMIN)
  @HttpCode(HttpStatus.OK)
  async resetUsers(
    @Language() language: LanguageEnum,
    @User() user: RequestUser,
    @Body() body: BulkEditRequest,
  ) {
    this.logger.info('resetUsers');
    const metadata = PackTheMetadata(user);

    return this.authClient.resetUsers(body.users, metadata);
  }

}