import {z} from 'zod'

export type CreateApiKlingV1VideosImage2videoArgs = {body: {prompt?: string | undefined, negative_prompt?: string | undefined, image: string, callback_url?: string | undefined, mode?: string | undefined, model_name?: string | undefined, image_tail?: string | undefined, cfg_scale?: number | undefined, duration?: string | undefined, static_mask?: string | undefined, dynamic_masks?: ({mask?: string | undefined, trajectories?: ({x?: number | undefined, y?: number | undefined}) | undefined}) | undefined, external_task_id?: string | undefined}};

export type CreateApiKlingV1VideosImage2videoOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const createApiKlingV1VideosImage2videoResponse = z.object({code: z.number().int(), message: z.string(), request_id: z.string(), data: z.object({task_id: z.string(), task_status: z.string(), task_status_msg: z.string(), task_info: z.object({external_task_id: z.string()}), task_result: z.object({videos: z.object({id: z.string(), url: z.string(), duration: z.string()})}), created_at: z.number().int(), updated_at: z.number().int()})});

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
};

/**
 * DeerAPI Kling Image to Video
 * 
 * POST /kling/v1/videos/image2video
 */
export const createApiKlingV1VideosImage2video = async (args: CreateApiKlingV1VideosImage2videoArgs, options?: CreateApiKlingV1VideosImage2videoOptions) => {
const {baseUrl = "https://api.deerapi.com", 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 = `${baseUrl.replace(/\/+$/, '')}/kling/v1/videos/image2video${query.size > 0 ? `?${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(createApiKlingV1VideosImage2videoResponse, await res.json())
};