import { TuyaService } from '@app/common/integrations/tuya/services/tuya.service';
import { CommunityRepository } from '@app/common/modules/community/repositories';
import { SpaceRepository } from '@app/common/modules/space/repositories';
import { HttpException, HttpStatus, Injectable } from '@nestjs/common';
import { GetDeviceDetailsInterface } from 'src/device/interfaces/get.device.interface';
import { GetSpaceParam } from '../dtos';
import { BaseResponseDto } from '@app/common/dto/base.response.dto';
import { SuccessResponseDto } from '@app/common/dto/success.response.dto';
import { convertKeysToCamelCase } from '@app/common/helper/camelCaseConverter';
import { ProductRepository } from '@app/common/modules/product/repositories';

@Injectable()
export class SpaceDeviceService {
  constructor(
    private readonly spaceRepository: SpaceRepository,
    private readonly tuyaService: TuyaService,
    private readonly productRepository: ProductRepository,
    private readonly communityRepository: CommunityRepository,
  ) {}

  async listDevicesInSpace(params: GetSpaceParam): Promise<BaseResponseDto> {
    const { spaceUuid, communityUuid } = params;
    try {
      const space = await this.validateCommunityAndSpace(
        communityUuid,
        spaceUuid,
      );

      const detailedDevices = await Promise.all(
        space.devices.map(async (device) => {
          const tuyaDetails = await this.getDeviceDetailsByDeviceIdTuya(
            device.deviceTuyaUuid,
          );

          return {
            uuid: device.uuid,
            deviceTuyaUuid: device.deviceTuyaUuid,
            productUuid: device.productDevice.uuid,
            productType: device.productDevice.prodType,
            isActive: device.isActive,
            updatedAt: device.updatedAt,
            ...tuyaDetails,
          };
        }),
      );

      return new SuccessResponseDto({
        data: detailedDevices,
        message: 'Successfully retrieved list of devices',
      });
    } catch (error) {
      console.error('Error listing devices in space:', error);
      throw new HttpException(
        error.message || 'Failed to retrieve devices in space',
        error.status || HttpStatus.INTERNAL_SERVER_ERROR,
      );
    }
  }

  async validateCommunityAndSpace(communityUuid: string, spaceUuid: string) {
    const community = await this.communityRepository.findOne({
      where: { uuid: communityUuid },
    });
    if (!community) {
      this.throwNotFound('Community', communityUuid);
    }

    const space = await this.spaceRepository.findOne({
      where: { uuid: spaceUuid, community: { uuid: communityUuid } },
      relations: ['devices', 'devices.productDevice'],
    });
    if (!space) {
      this.throwNotFound('Space', spaceUuid);
    }
    return space;
  }

  private throwNotFound(entity: string, uuid: string) {
    throw new HttpException(
      `${entity} with ID ${uuid} not found`,
      HttpStatus.NOT_FOUND,
    );
  }

  private async getDeviceDetailsByDeviceIdTuya(
    deviceId: string,
  ): Promise<GetDeviceDetailsInterface> {
    try {
      const tuyaDeviceDetails =
        await this.tuyaService.getDeviceDetails(deviceId);

      // Convert keys to camel case
      const camelCaseResponse = convertKeysToCamelCase(tuyaDeviceDetails);

      // Exclude specific keys and add `productUuid`
      // eslint-disable-next-line @typescript-eslint/no-unused-vars
      const { uuid, ...rest } = camelCaseResponse;
      return {
        ...rest,
      } as GetDeviceDetailsInterface;
    } catch (error) {
      throw new HttpException(
        `Error fetching device details from Tuya for device id ${deviceId}`,
        HttpStatus.INTERNAL_SERVER_ERROR,
      );
    }
  }
}