import {z} from 'zod'

export type GetApiV1RandomArgs = {q: string, key: string, locale?: string | undefined, contentfilter?: ('off' | 'low' | 'medium' | 'high') | undefined, media_filter?: ('basic' | 'minimal') | undefined, ar_range?: ('all' | 'wide' | 'standard') | undefined, limit?: number | undefined, pos?: string | undefined, anon_id?: string | undefined};

export type GetApiV1RandomOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const next = z.string();

export const mediaObject = z.object({preview: z.string(), url: z.string(), dims: z.array(z.number().int()), size: z.number().int()});

export const media = z.object({gif: mediaObject.optional(), mediumgif: mediaObject.optional(), tinygif: mediaObject.optional(), nanogif: mediaObject.optional(), mp4: mediaObject.optional(), loopedmp4: mediaObject.optional(), tinymp4: mediaObject.optional(), nanomp4: mediaObject.optional(), webm: mediaObject.optional(), tinywebm: mediaObject.optional(), nanowebm: mediaObject.optional()});

export const gifObject = z.object({created: z.number(), hasaudio: z.boolean(), id: z.string(), media: z.array(media), tags: z.array(z.string()), title: z.string(), content_description: z.string()});

export const searchResult = z.object({next: next, results: z.array(gifObject)});

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
};

/**
 * Get a randomized list of GIFs for a given search term. This differs from the search endpoint which returns a rank ordered list of GIFs for a given search term.
 * 
 * GET /v1/random
 */
export const getApiV1Random = async (args: GetApiV1RandomArgs, options?: GetApiV1RandomOptions) => {
const {baseUrl = "https://g.tenor.com", fetch: fetchFn = fetch} = options ?? {}

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

if (args.q != null) query.append("q", String(args.q))
if (args.key != null) query.append("key", String(args.key))
if (args.locale != null) query.append("locale", String(args.locale))
if (args.contentfilter != null) query.append("contentfilter", String(args.contentfilter))
if (args.media_filter != null) query.append("media_filter", String(args.media_filter))
if (args.ar_range != null) query.append("ar_range", String(args.ar_range))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.pos != null) query.append("pos", String(args.pos))
if (args.anon_id != null) query.append("anon_id", String(args.anon_id))

const url = `${baseUrl.replace(/\/+$/, '')}/v1/random${query.size > 0 ? `?${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(searchResult, await res.json())
};