import {z} from 'zod'

export type Flux3VideoT2VInputs = {user?: (string | null) | undefined, prompt: string, aspect_ratio?: ('21:9' | '2:1' | '16:9' | '4:3' | '1:1' | '3:4' | '9:16' | '9:21' | 'auto') | undefined, duration?: (number | 'auto') | undefined, resolution?: ('hd' | 'fhd' | 'qhd' | 'uhd') | undefined, version?: 'latest' | undefined, generate_audio?: boolean | undefined, safety_tolerance?: number | undefined, draft?: boolean | undefined, mode: 't2v'};

export type Flux3VideoI2VInputs = {user?: (string | null) | undefined, prompt: string, aspect_ratio?: ('21:9' | '2:1' | '16:9' | '4:3' | '1:1' | '3:4' | '9:16' | '9:21' | 'auto') | undefined, duration?: (number | 'auto') | undefined, resolution?: ('hd' | 'fhd' | 'qhd' | 'uhd') | undefined, version?: 'latest' | undefined, generate_audio?: boolean | undefined, safety_tolerance?: number | undefined, draft?: boolean | undefined, mode: 'i2v', keyframes: string | Array<unknown> | Array<string> | Array<Array<unknown>>};

export type Flux3VideoV2VInputs = {user?: (string | null) | undefined, prompt: string, aspect_ratio?: ('21:9' | '2:1' | '16:9' | '4:3' | '1:1' | '3:4' | '9:16' | '9:21' | 'auto') | undefined, duration?: (number | 'auto') | undefined, resolution?: ('hd' | 'fhd' | 'qhd' | 'uhd') | undefined, version?: 'latest' | undefined, generate_audio?: boolean | undefined, safety_tolerance?: number | undefined, draft?: boolean | undefined, mode: 'v2v', start_video: string};

export type Flux3VideoDraftEnhanceInputs = {user?: (string | null) | undefined, mode: 'draft_enhance', draft_cache: string, resolution?: ('hd' | 'fhd' | 'qhd' | 'uhd') | undefined, safety_tolerance?: number | undefined};

export type Flux3VideoInputsBody = Flux3VideoT2VInputs | Flux3VideoI2VInputs | Flux3VideoV2VInputs | Flux3VideoDraftEnhanceInputs;

export type CreateApiV1Flux3VideoArgs = {body: Flux3VideoInputsBody};

export type CreateApiV1Flux3VideoOptions = {baseUrl?: string | undefined, APIKeyHeader?: string | undefined, fetch?: typeof fetch | undefined};

export const asyncResponse = z.object({id: z.string(), polling_url: z.string(), cost: z.number().nullable().optional(), input_mp: z.number().nullable().optional(), output_mp: z.number().nullable().optional()});

export const asyncWebhookResponse = z.object({id: z.string(), status: z.string(), webhook_url: z.string(), cost: z.number().nullable().optional(), input_mp: z.number().nullable().optional(), output_mp: z.number().nullable().optional()});

export const createApiV1Flux3VideoResponse = z.union([asyncResponse, asyncWebhookResponse]);

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
};

/**
 * Generate a video with FLUX 3.
 * 
 * POST /v1/flux-3-video
 */
export const createApiV1Flux3Video = async (args: CreateApiV1Flux3VideoArgs, options?: CreateApiV1Flux3VideoOptions) => {
const {baseUrl = "https://api.bfl.ai", fetch: fetchFn = fetch, APIKeyHeader} = options ?? {}

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

if (APIKeyHeader !== undefined) headers.set("x-key", APIKeyHeader)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/flux-3-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(createApiV1Flux3VideoResponse, await res.json())
};