import {z} from 'zod'

export type GetApiSearchSimilarImagesArgs = {api_token: string, vhash?: string | undefined, num_results_per_page?: number | undefined, page?: number | undefined, gallery_id?: string | undefined, url?: string | undefined};

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

export const getApiSearchSimilarImagesResponse = z.object({results: z.array(z.object({visual_id: z.string().optional(), org_image_key: z.string().optional(), source_url: z.string().optional()})).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
};

/**
 * Search by Image
 * 
 * GET /search_similar_images
 */
export const getApiSearchSimilarImages = async (args: GetApiSearchSimilarImagesArgs, options?: GetApiSearchSimilarImagesOptions) => {
const {baseUrl = "https://engine.prod.bria-api.com/v1", fetch: fetchFn = fetch} = options ?? {}

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

if (args.api_token != null) headers.set("api_token", String(args.api_token))
if (args.vhash != null) query.append("vhash", String(args.vhash))
if (args.num_results_per_page != null) query.append("num_results_per_page", String(args.num_results_per_page))
if (args.page != null) query.append("page", String(args.page))
if (args.gallery_id != null) query.append("gallery_id", String(args.gallery_id))
if (args.url != null) query.append("url", String(args.url))

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