import {z} from 'zod'

export type GetApiUgcArgs = {store: string, sku?: string | undefined, tags?: string | undefined, categories?: string | undefined, include_videos?: boolean | undefined, per_page?: number | undefined};

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

export const timelineReviewAttribute = z.object({attribute_id: z.string().optional(), type: z.string().optional(), label: z.string().optional(), options: z.array(z.unknown()).optional(), value: z.string().optional()});

export const ugcTaggedProduct = z.object({sku: z.string().optional(), top: z.number().int().optional(), left: z.number().int().optional(), product: z.object({sku: z.string().optional(), name: z.string().optional(), description: z.string().optional(), link: z.string().optional(), image_url: z.string().optional(), price: z.string().optional(), rating: z.string().optional(), review_count: z.string().optional()}).optional()});

export const timelineReviewReply = z.object({comments: z.string().optional(), date_created: z.string().optional(), author: z.object({name: z.string().optional(), avatar: z.string().optional()}).optional()});

export const ugcItem = z.object({type: z.string().optional(), type_label: z.string().optional(), source: z.string().optional(), rating: z.number().int().optional(), comments: z.string().optional(), author: z.string().optional(), date_created: z.string().optional(), order_id: z.string().optional(), sku: z.string().optional(), helpful_count: z.string().optional(), is_video: z.number().int().optional(), image_raw: z.string().optional(), image_sm: z.string().optional(), image_md: z.string().optional(), image_lg: z.string().optional(), attributes: z.array(timelineReviewAttribute).optional(), tagged_products: z.array(ugcTaggedProduct).optional(), replies: z.array(timelineReviewReply).optional()});

export const ugcResponse = z.object({ugc: z.array(ugcItem).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
};

/**
 * Retrieve User Generated Content
 * 
 * GET /ugc
 */
export const getApiUgc = async (args: GetApiUgcArgs, options?: GetApiUgcOptions) => {
const {baseUrl = "https://api.reviews.io", fetch: fetchFn = fetch} = options ?? {}

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

if (args.store != null) query.append("store", String(args.store))
if (args.sku != null) query.append("sku", String(args.sku))
if (args.tags != null) query.append("tags", String(args.tags))
if (args.categories != null) query.append("categories", String(args.categories))
if (args.include_videos != null) query.append("include_videos", String(args.include_videos))
if (args.per_page != null) query.append("per_page", String(args.per_page))

const url = `${baseUrl.replace(/\/+$/, '')}/ugc${query.size > 0 ? `?${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(ugcResponse, await res.json())
};