import {z} from 'zod'

export type GetApiNaverReviewsArgs = {from: number, to: number, review_type: 'general' | 'premium', body: {channel_key: string}};

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

export const naverReviewAnnotation = z.object({review_id: z.string(), score: z.string(), title: z.string(), content: z.string().optional(), product_order_id: z.string(), product_id: z.string(), product_name: z.string(), product_option_name: z.string().optional(), writer: z.string(), created_at: z.number().int(), modified_at: z.number().int().optional()});

export const naverReviewsResponse = z.object({code: z.number().int().optional(), message: z.string().optional(), response: z.array(naverReviewAnnotation).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
};

/**
 * (주문형-네이버페이) 네이버페이 구매평 조회 API
 * 
 * GET /naver/reviews
 */
export const getApiNaverReviews = async (args: GetApiNaverReviewsArgs, options?: GetApiNaverReviewsOptions) => {
const {baseUrl = "https://api.iamport.kr", fetch: fetchFn = fetch} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('content-type', "application/x-www-form-urlencoded")
headers.set('accept', "application/json")

if (args.from != null) query.append("from", String(args.from))
if (args.to != null) query.append("to", String(args.to))
if (args.review_type != null) query.append("review_type", String(args.review_type))

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

const res = await fetchFn(url, {method: "GET", headers, body: new URLSearchParams(Object.entries(args.body).flatMap(([key, value]) => (value == null ? [] : [[key, String(value)]])))})

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

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