import {z} from 'zod'

export type CreateApiV2HailuoTextToVideoArgs = {body: {prompt: string, model: 'h3' | 'h3_max', number_of_videos: number, aspect_ratio?: ('21:9' | '16:9' | '4:3' | '1:1' | '3:4' | '9:16') | undefined, duration?: number | undefined, resolution?: ('480p' | '768p' | '2k') | undefined, callback_url?: string | undefined}};

export type CreateApiV2HailuoTextToVideoOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const h3Task = z.object({id: z.string().optional(), prompt: z.string().optional(), file_urls: z.array(z.string()).optional(), status: z.enum(["processing", "completed", "failed"]).optional(), error: z.string().optional(), failed_slots: z.array(z.object({index: z.number().int().optional(), error: z.string().optional()})).optional(), task_type: z.string().optional(), aspect_ratio: z.string().optional(), model: z.string().optional(), number_of_outputs: z.number().int().optional(), created_at: 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
};

/**
 * H3 Text to Video
 * 
 * POST /v2/hailuo/text-to-video
 */
export const createApiV2HailuoTextToVideo = async (args: CreateApiV2HailuoTextToVideoArgs, options?: CreateApiV2HailuoTextToVideoOptions) => {
const {baseUrl = "https://genaipro.io/api", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v2/hailuo/text-to-video${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(h3Task, await res.json())
};