import {z} from 'zod'

export type GetApiV2ImagesRecommendationsArgs = {id: Array<string>, max_items?: number | undefined, safe?: boolean | undefined};

export type GetApiV2ImagesRecommendationsOptions = {baseUrl?: string | undefined, basic?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const getApiV2ImagesRecommendationsResponse = z.object({data: z.array(z.object({id: z.string()})).optional(), errors: z.array(z.object({statusCode: z.number().optional(), code: z.string().optional(), data: z.string().optional(), items: z.array(z.object({})).optional(), message: z.string(), path: z.string().optional()})).optional(), message: z.string().optional(), page: z.number().int().optional(), per_page: z.number().int().optional(), total_count: 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
};

/**
 * List recommended images
 * 
 * GET /v2/images/recommendations
 * 
 * Also accepts auth: customer_accessCode
 */
export const getApiV2ImagesRecommendations = async (args: GetApiV2ImagesRecommendationsArgs, options?: GetApiV2ImagesRecommendationsOptions) => {
const {baseUrl = "https://api.shutterstock.com", fetch: fetchFn = fetch, basic} = options ?? {}

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

for (const item of args.id ?? []) query.append("id", String(item))
if (args.max_items != null) query.append("max_items", String(args.max_items))
if (args.safe != null) query.append("safe", String(args.safe))
if (basic !== undefined) headers.set('authorization', `Basic ${btoa(`${basic.username}:${basic.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v2/images/recommendations${query.size > 0 ? `?${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(getApiV2ImagesRecommendationsResponse, await res.json())
};