import { UploadedFileTypes } from '@/common/enums/enums'
import { GoodPricingModel } from '@/generated/prisma/enums'
import { GoodSelect } from '@/generated/prisma/models'
import { UploaderService } from '@/modules/uploader/uploader.service'
import { Injectable } from '@nestjs/common'

export interface CreateGoodDto {
  name: string
  sku_id: string
  category_id: string
  measure_unit_id: string
  pricing_model: GoodPricingModel
  description?: string
  is_default_guild_good?: boolean
}

export interface UpdateGoodDto extends Partial<CreateGoodDto> {}

@Injectable()
export class GoodsSharedService {
  constructor(private readonly uploaderService: UploaderService) {}

  readonly defaultSelect: GoodSelect = {
    id: true,
    name: true,
    pricing_model: true,
    image_url: true,
    description: true,
    sku: {
      select: {
        id: true,
        name: true,
      },
    },
    measure_unit: {
      select: {
        id: true,
        name: true,
      },
    },
    category: {
      select: {
        id: true,
        name: true,
      },
    },
  }

  async prepareCreateData(data: CreateGoodDto, file?: Express.Multer.File) {
    const { category_id, measure_unit_id, sku_id, ...rest } = data

    let image_url = ''
    if (file) {
      const uploadedUrl = await this.uploaderService.uploadFile(
        file,
        UploadedFileTypes.GOOD,
      )
      image_url = uploadedUrl || ''
    }

    return {
      ...rest,
      image_url,
      sku: {
        connect: {
          id: sku_id,
        },
      },
      measure_unit: {
        connect: {
          id: measure_unit_id,
        },
      },
      category: {
        connect: {
          id: category_id,
        },
      },
    }
  }

  async prepareUpdateData(id: string, data: UpdateGoodDto, file?: Express.Multer.File) {
    const { category_id, measure_unit_id, sku_id, ...rest } = data

    let image_url = ''
    if (file) {
      const uploadedUrl = await this.uploaderService.uploadFile(
        file,
        UploadedFileTypes.GOOD,
      )
      image_url = uploadedUrl || ''
    }

    const updateData: any = {
      ...rest,
      image_url,
    }

    if (sku_id) {
      updateData.sku = { connect: { id: sku_id } }
    }
    if (measure_unit_id) {
      updateData.measure_unit = { connect: { id: measure_unit_id } }
    }
    if (category_id) {
      updateData.category = { connect: { id: category_id } }
    }

    return updateData
  }

  async handleImageUpdate(id: string, prisma: any, image_url: string) {
    if (image_url) {
      const prevImage = await prisma.good.findUnique({
        where: { id },
        select: { image_url: true },
      })

      if (prevImage?.image_url) {
        this.uploaderService.deleteFile(prevImage.image_url, UploadedFileTypes.GOOD)
      }
    }
  }
}