import {z} from 'zod'

export type GetApiAiImageGrokImagineArgs = {prompt: string, ratio: string};

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

export const aIImageResponse = z.object({creator: z.string().optional(), message: z.string().optional(), ok: z.boolean().optional(), jobId: z.number().optional(), task_url: z.string().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
};

/**
 * X.AI's Grok Imagine, Generate with prompt
 * 
 * GET /ai-image/grok-imagine
 */
export const getApiAiImageGrokImagine = async (args: GetApiAiImageGrokImagineArgs, options?: GetApiAiImageGrokImagineOptions) => {
const {baseUrl = "https://api.paxsenix.org", fetch: fetchFn = fetch} = options ?? {}

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

if (args.prompt != null) query.append("prompt", String(args.prompt))
if (args.ratio != null) query.append("ratio", String(args.ratio))

const url = `${baseUrl.replace(/\/+$/, '')}/ai-image/grok-imagine${query.size > 0 ? `?${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(aIImageResponse, await res.json())
};