import {z} from 'zod'

export type GetApiB2bV2ProductsOptions = {baseUrl?: string | undefined, Bearer?: string | undefined, fetch?: typeof fetch | undefined};

export const product = z.object({cd_nation: z.string().optional(), id_prod: z.string().optional(), id_proj: z.number().int().optional(), img_background_prod: z.string().optional(), img_mobile_background_prod: z.string().optional(), img_thumbnail_prod: z.string().optional(), nm_cert_agc: z.string().optional(), nm_proj_dev: z.string().optional(), productNameEn: z.string().optional(), productNameKr: z.string().optional(), product_stock_amount: z.string().optional(), projectNameEn: z.string().optional(), projectNameKr: z.string().optional(), project_effect: z.array(z.string()).optional(), project_type: z.string().optional(), unit_price: z.number().optional()});

export const winclResponseDataListProduct = z.object({code: z.string().optional(), currentPageNum: z.number().int().optional(), items: z.array(product).optional(), message: z.string().optional(), pageSize: z.number().int().optional(), sortType: z.enum(["AMOUNT_ASC", "AMOUNT_DESC", "ASC", "DESC", "NONE", "PRICE_ASC", "PRICE_DESC", "UNIT_PRICE_ASC", "UNIT_PRICE_DESC"]).optional(), totalCount: z.number().int().optional(), totalPages: z.number().int().optional()});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * B2B product list
 * 
 * GET /b2b/v2/products
 */
export const getApiB2bV2Products = async (options?: GetApiB2bV2ProductsOptions) => {
const {baseUrl = "https://api.wincl.io:443", fetch: fetchFn = fetch, Bearer} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

if (Bearer !== undefined) headers.set('authorization', `Bearer ${Bearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/b2b/v2/products${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(winclResponseDataListProduct, await res.json())
};