import {
  OnModuleInit,
  Inject,
  Injectable,
  HttpException,
  HttpStatus,
  InternalServerErrorException,
  ForbiddenException,
} from '@nestjs/common';

import { firstValueFrom, lastValueFrom } from 'rxjs';
import { DucClient } from '../duc/client.config';
import { ClientGrpc } from '@nestjs/microservices';
import { ProtoServices } from '@dadosfera/protospack-v2/dist/lib/Duc';
import { CustomerSetLinksRequest } from '@dadosfera/protospack-v2/dist/lib/Duc/interfaces/messages';
import { CustomersProtoService } from '@dadosfera/protospack-v2/dist/lib/Duc/interfaces/write-service';
import { CustomerLinksConfig } from './dtos/customers';
import ErrorCodes from 'src/utils/errorCodes';
import jwt from 'jsonwebtoken';
import {
  GetSecretValueCommand,
  SecretsManagerClient,
} from '@aws-sdk/client-secrets-manager';
import getEnv from 'src/utils/getEnv';
import { logger } from 'elastic-apm-node';
import {
  ReadService,
  ProtoServices as PipelineProtoServices,
} from '@dadosfera/protospack-v2/dist/lib/PipelineV2';
import { Metadata } from '@grpc/grpc-js';
import { PipelinesClientConfiguration } from '../pipelinesV2/pipelines-client';
import DadosferaLogger from '@dadosfera/dadosfera-logs';

// This function will accept any string, which may result in a bug.
@Injectable()
export class CustomersService implements OnModuleInit {

  private customerService: CustomersProtoService;
  private logger: DadosferaLogger;
  private pipelineReadService: ReadService.PipelineV2ReadService;

  constructor(
    @Inject(DucClient.name) private readonly grpcClient: ClientGrpc,
    @Inject(PipelinesClientConfiguration.name)
    private readonly pipelinesGrpcClient: ClientGrpc,
    @Inject(DadosferaLogger)
    dadosferaLogger: DadosferaLogger,
  ) {
    this.logger = dadosferaLogger.logger;
  }

  onModuleInit() {
    this.customerService = this.grpcClient.getService<CustomersProtoService>(
      ProtoServices.CustomersProtoService,
    );
    this.pipelineReadService =
      this.pipelinesGrpcClient.getService<ReadService.PipelineV2ReadService>(
        PipelineProtoServices.PipelineV2ReadService,
      );
  }

  async getCustomer(customerId: string) {
    return await lastValueFrom(
      this.customerService.CustomerFindOneById({
        id: customerId
      })
    )
  }

  async getLinks(customerId: string): Promise<CustomerLinksConfig | null> {
    try {
      const result = await lastValueFrom(
        this.customerService.CustomerGetLinks({ customerId }),
      );
      return (result.links as CustomerLinksConfig) || null;
    } catch (err) {
      if (err.details === ErrorCodes.CUSTOMER.NOT_FOUND)
        throw new HttpException(err.details, HttpStatus.NOT_FOUND);
      throw err;
    }
  }

  async setLinks(customerId: string, links: CustomerLinksConfig) {
    if (!customerId || !links) {
      throw new HttpException(null, HttpStatus.BAD_REQUEST);
    }

    try {
      return await firstValueFrom(
        this.customerService.CustomerSetLinks({
          customerId,
          links: links as CustomerSetLinksRequest['links'],
        }),
      );
    } catch (err) {
      if (err.details === ErrorCodes.CUSTOMER.NOT_FOUND)
        throw new HttpException(err.details, HttpStatus.NOT_FOUND);
      else throw err;
    }
  }

  async generateToken(
    expiresIn = '30m',
    data: { customerId: string; userId: string; customerName: string },
  ) {
    const { customerId, userId: generatedById, customerName } = data;

    const secretsManagerClient = new SecretsManagerClient({});

    const getSecretComand = new GetSecretValueCommand({
      SecretId: `${getEnv()}/${customerName}/jwt-signing-key`,
    });
    let private_key_pem;
    await secretsManagerClient
      .send(getSecretComand)
      .then((res) => {
        const secret = JSON.parse(res.SecretString);

        private_key_pem = secret.private_key_pem;
      })
      .catch((err) => {
        logger.error(err.stack);
        throw new InternalServerErrorException(
          'Error finding keys for customer',
        );
      });
    let jwt_token;
    try {
      jwt_token = jwt.sign(
        {
          customerId,
          generatedById,
        },
        private_key_pem,
        {
          algorithm: 'RS256',
          expiresIn,
          issuer: 'maestro',
        },
      );
    } catch (err) {
      logger.error(err.stack);
      throw new InternalServerErrorException('Error generating token');
    }
    // const verify = jwt.verify(jwt_token, public_key_pem, {
    //   algorithms: ['RS256'],
    //   issuer: 'maestro',
    // });
    // const decoded = jwt.decode(jwt_token, { complete: true });
    return jwt_token;
  }

  async getMonitoringDashboardUrl(metadata: Metadata) {
    logger.info('CustomersService - getMonitoringDashboardUrl');

    const res = await lastValueFrom(
      this.pipelineReadService.PipelineV2GetDashboardUrl(
        {
          dashboard_id: '98',
          exp: '15m',
          metabase_customer_name: 'dadosferatech',
        },
        metadata,
      ),
    );
    logger.info('Done');

    return res;
  }

  async getLogsDashboardUrl(metadata: Metadata) {
    logger.info('CustomersService - getMixPanelLogsDashboardUrl');
  
    const res = await lastValueFrom(
      this.pipelineReadService.PipelineV2GetDashboardUrl(
        {
          dashboard_id: '103',
          exp: '15m',
          metabase_customer_name: 'dadosferatech',
        },
        metadata,
      ),
    );
    logger.info('Done');
  
    return res;
  }

  async getAccessDashboardUrl(customerName: string, metadata: Metadata) {
    /*
     * TODO(Refactor): dar um jeito de exibir o dash da sbm diferente dos outros customer
     * pois o signicado de department para sbm significa as instituições do usuários
     */
    if (customerName !== 'sbmoffshorecom') {
      throw new ForbiddenException();
    }
    logger.info('CustomersService - getAccessDashboardUrl');
  
    const res = await this.getDashboardUrl('105', metadata);
    logger.info('Done');
  
    return res;
  }

  private async getDashboardUrl(dashboardId: string, metadata: Metadata) {
    return await lastValueFrom(
      this.pipelineReadService.PipelineV2GetDashboardUrl(
        {
          dashboard_id: dashboardId,
          exp: '15m',
          metabase_customer_name: 'dadosferatech',
        },
        metadata
      )
    );
  }

  async enableEnforceMfa(id: string, enabled: boolean) {
    return await lastValueFrom(
      this.customerService.CustomerUpdateEnforceMfa({
        customerId: id,
        enforceMfa: enabled
      })
    )
  }

  async updateOrganizationInfo(
    customerId: string,
    data: {
      companyName: string;
      companySite: string;
      domain: string;
      cnpj: string;
      description: string;
    },
  ) {
    try {
      const result = await lastValueFrom(
        this.customerService.OrganizationUpdate({
          customerId,
          companyName: data.companyName || '',
          companySite: data.companySite || '',
          domain: data.domain || '',
          cnpj: data.cnpj || '',
          description: data.description || '',
        }),
      );

      return result;
    } catch (err) {
      if (err.details === ErrorCodes.CUSTOMER.NOT_FOUND)
        throw new HttpException(err.details, HttpStatus.NOT_FOUND);
      else throw err;
    }
  }

  async getOrganizationInfo(customerId: string) {
    try {
      const customerResponse = await lastValueFrom(
        this.customerService.CustomerFindOneById({ id: customerId })
      );

      const customer = customerResponse.customer;
      
      return {
        companyName: customer.companyName || '',
        companySite: customer.companySite || '',
        domain: customer.domain || '',
        cnpj: customer.cnpj || '',
        description: customer.description || ''
      };
    } catch (err) {
      if (err.details === ErrorCodes.CUSTOMER.NOT_FOUND)
        throw new HttpException(err.details, HttpStatus.NOT_FOUND);
      else throw err;
    }
  }

}