import {z} from 'zod'

export type SubjectReference = {type: string, image: Array<string>};

export type VideoGenerationReq = {prompt?: string | undefined, model: 'MiniMax-Hailuo-02' | 'T2V-01-Director' | 'T2V-01', prompt_optimizer?: boolean | undefined, seed?: number | undefined, callback_url?: string | undefined, first_frame_image?: string | undefined, watermark?: string | undefined, subject_reference?: Array<SubjectReference> | undefined, duration?: number | undefined, resolution?: string | undefined, aigc_watermark?: boolean | undefined, fast_pretreatment?: boolean | undefined, ignore_pretreatment_error?: boolean | undefined, user_translate?: boolean | undefined, last_frame_image?: string | undefined, priority?: number | undefined};

export type CreateApiV1VideoGenerationArgs = {body: VideoGenerationReq};

export type CreateApiV1VideoGenerationOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const videoGenerationResp = z.object({task_id: 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
};

/**
 * Video Generation
 * 
 * POST /v1/video_generation
 */
export const createApiV1VideoGeneration = async (args: CreateApiV1VideoGenerationArgs, options?: CreateApiV1VideoGenerationOptions) => {
const {baseUrl = "https://api.minimax.io", 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 = `${baseUrl.replace(/\/+$/, '')}/v1/video_generation${query.size > 0 ? `?${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(videoGenerationResp, await res.json())
};