import DadosferaLogger from '@dadosfera/dadosfera-logs';
import {
  Body,
  Controller,
  Delete,
  Get,
  HttpCode,
  HttpStatus,
  Inject,
  Param,
  Post,
  Put,
  Redirect,
  Req,
} from '@nestjs/common';
import { IdentityProviderService } from './identity-provider.service';
import { RequestUser, User } from 'src/decorators/user.decorator';
import { Language } from 'src/decorators/language.decorator';
import { LanguageEnum } from 'src/utils/languages.enum';
import { PackTheMetadata } from 'src/utils/PackTheMetadata';
import { ApiOkResponse } from '@nestjs/swagger';
import {
  CreateIdentityProvider,
  IdentityProviderListResponse,
  IdentityProviderResponse,
} from './dto/identity-provider.dto';
import { Request } from 'express';
import ErrorCodes from 'src/utils/errorCodes';
import {
  Authenticated,
  RequireModule,
  RequireSomePermission,
} from 'src/decorators/authentication.decorator';
import { PERMISSIONS_GROUPS } from 'src/authentication/permissions.enum';

@Controller('identity-providers')
export class IdentityProviderController {
  logger: DadosferaLogger;

  constructor(
    @Inject(DadosferaLogger)
    dadosferaLogger: DadosferaLogger,
    private identityProviderService: IdentityProviderService,
  ) {
    this.logger = dadosferaLogger.logger;
  }

  @Post()
  @HttpCode(HttpStatus.OK)
  @ApiOkResponse({ type: IdentityProviderResponse })
  @Authenticated()
  @RequireModule('sso')
  @RequireSomePermission(PERMISSIONS_GROUPS.USERS.permissions.ADMIN)
  async addIdentityProvider(
    @User() user: RequestUser,
    @Body() body: CreateIdentityProvider,
    @Language() language: LanguageEnum,
  ) {
    this.logger.info('POST /identity-providers');

    const metadata = PackTheMetadata({
      ...user,
      language,
    });

    return await this.identityProviderService.create(body, metadata);
  }

  @Get()
  @HttpCode(HttpStatus.OK)
  @ApiOkResponse({ type: IdentityProviderListResponse })
  @Authenticated()
  @RequireModule('sso')
  @RequireSomePermission(PERMISSIONS_GROUPS.USERS.permissions.ADMIN)
  async getProviders(
    @User() user: RequestUser,
    @Language() language: LanguageEnum,
  ) {
    this.logger.info('GET identity-providers');
    const metadata = PackTheMetadata({
      ...user,
      language,
    });

    const result = await this.identityProviderService.getList(metadata);
    return result;
  }

  @Delete(':id')
  @HttpCode(HttpStatus.NO_CONTENT)
  @RequireModule('sso')
  @RequireSomePermission(PERMISSIONS_GROUPS.USERS.permissions.ADMIN)
  async deleteIdentityProvider(
    @Param('id') id: string,
    @User() user: RequestUser,
  ) {
    this.logger.info('DELETE /identity-providers');

    const metadata = PackTheMetadata({
      ...user,
    });

    return await this.identityProviderService.deleteIdentityProvider(
      id,
      metadata,
    );
  }

  @Put(':id')
  @HttpCode(HttpStatus.OK)
  @Authenticated()
  @RequireModule('sso')
  @RequireSomePermission(PERMISSIONS_GROUPS.USERS.permissions.ADMIN)
  async updateIdentityProviders(
    @Param('id') id: string,
    @Body() body: CreateIdentityProvider,
    @User() user: RequestUser,
  ) {
    this.logger.info('PUT /identity-providers');

    const metadata = PackTheMetadata({
      ...user,
    });

    return await this.identityProviderService.updateIdentityProviders(
      id,
      body,
      metadata,
    );
  }

  @Post('/callback')
  @HttpCode(HttpStatus.OK)
  async callbackIdp(
    @Req() req: Request,
    @Language() language: LanguageEnum,
    @Body()
    body: {
      state: string;
      code: string;
    },
  ) {
    this.logger.info('GET /identity-providers/callback');
    const { code, state } = body;

    if (!code) {
      this.logger.error('No code received from IDP');
      throw new Error(ErrorCodes.IDENTITY_PROVIDER.INVALID_RESPONSE);
    }

    if (!state) {
      this.logger.error('No state received from IDP');
      throw new Error(ErrorCodes.IDENTITY_PROVIDER.INVALID_RESPONSE);
    }

    try {
      const origin = req.headers['origin'] as string;
      this.logger.info('Header Origin: ' + origin);

      const lang =
        language.substring(0, 2) + language.substring(2).toUpperCase();
      const callbackUrl =
        process.env.ENV !== 'prd'
          ? `${origin}/auth/callback`
          : `${origin}/${lang}/auth/callback`;

      this.logger.info('Callback URL: ' + callbackUrl);
      return await this.identityProviderService.getTokenByIdp(
        code,
        state,
        callbackUrl,
      );
    } catch (error) {
      this.logger.error(error);
      throw error;
    }
  }

  @Get('/links')
  @HttpCode(HttpStatus.OK)
  async providerLinks(@Req() req: Request) {
    this.logger.info('GET /identity-providers/links');

    try {
      const frontDomain = req.headers['origin'] as string;
      this.logger.info('Header Origin: ' + frontDomain);

      if (!frontDomain) {
        this.logger.info('Not found front domain');
        throw new Error(ErrorCodes.IDENTITY_PROVIDER.INVALID_HEADER);
      }

      const result =
        await this.identityProviderService.identityProvidersLinksPerDomain(
          frontDomain,
        );
      return result;
    } catch (error) {
      this.logger.error(error);
      throw error;
    }
  }

  @Get(':id')
  @HttpCode(HttpStatus.OK)
  @Redirect()
  async loginIdp(
    @Param('id') id: string,
    @Req() req: Request,
    @Language() language: LanguageEnum,
  ) {
    this.logger.info('GET /identity-providers/:id');

    try {
      const frontDomain =
        (req.headers['origin'] as string) || (req.headers['referer'] as string);
      this.logger.info(`Front domain: ${frontDomain}`);
      const host =
        frontDomain.lastIndexOf('/') !== -1
          ? frontDomain.substring(0, frontDomain.lastIndexOf('/'))
          : frontDomain;

      const lang =
        language.substring(0, 2) + language.substring(2).toUpperCase();
      const callbackUrl =
        process.env.ENV !== 'prd'
          ? `${host}/auth/callback`
          : `${host}/${lang}/auth/callback`;

      this.logger.info('Callback URL: ' + callbackUrl);
      const redirectUrl =
        await this.identityProviderService.loginIdentityProvider(
          id,
          callbackUrl,
        );

      this.logger.info(`Redirecting to: ${redirectUrl}`);
      return {
        url: redirectUrl,
      };
    } catch (error) {
      this.logger.error(error);
      throw error;
    }
  }
}