import {z} from 'zod'

export type ContentItem = {type: 'text' | 'image_url' | 'video_url' | 'audio_url', text?: string | undefined, image_url?: {url: string} | undefined, video_url?: {url: string} | undefined, audio_url?: {url: string} | undefined, role?: ('first_frame' | 'last_frame' | 'reference_image' | 'reference_video' | 'reference_audio') | undefined};

export type VideoGenerationV2Req = {model: 'MiniMax-H3' | 'MiniMax-H3-Highspeed' | 'MiniMax-H3-Lite' | 'MiniMax-H3-Max', content: Array<ContentItem>, resolution: '480P' | '768P' | '2K', duration: 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15, ratio?: ('adaptive' | '21:9' | '16:9' | '4:3' | '1:1' | '3:4' | '9:16') | undefined, extra?: ({prompt_expansion_mode?: ('disabled' | 'balanced' | 'quality') | undefined}) | undefined, callback_url?: string | undefined};

export type CreateApiV2VideoGenerationArgs = {'Content-Type': 'application/json', body: VideoGenerationV2Req};

export type CreateApiV2VideoGenerationOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const videoGenerationV2Resp = 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
};

/**
 * Create video generation task
 * 
 * POST /v2/video_generation
 */
export const createApiV2VideoGeneration = async (args: CreateApiV2VideoGenerationArgs, options?: CreateApiV2VideoGenerationOptions) => {
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 (args['Content-Type'] != null) headers.set("Content-Type", String(args['Content-Type']))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v2/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(videoGenerationV2Resp, await res.json())
};