import {z} from 'zod'

export type CreateApiGenerateImageGoogleNanoBananaProArgs = {'X-Webhook-URL'?: string | undefined, body: {prompt: string, width?: number | undefined, height?: number | undefined, image_urls?: Array<string> | undefined, aspect_ratio?: ('21:9' | '1:1' | '4:3' | '3:2' | '2:3' | '5:4' | '4:5' | '3:4' | '16:9' | '9:16') | undefined, resolution?: ('1K' | '2K' | '4K') | undefined}};

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

export const createApiGenerateImageGoogleNanoBananaProResponse = z.object({job_id: z.string(), status: z.enum(["backlogged", "queued", "scheduled", "processing", "sampling", "intermediate-complete", "completed", "failed", "cancelled"]), created_at: z.string(), completed_at: z.unknown(), result: z.unknown(), error: z.object({code: z.string(), message: z.string().optional(), param: z.string().optional()}).optional(), progress: z.number().gte(0).lte(1).nullable().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
};

/**
 * Nano Banana Pro
 * 
 * POST /generate/image/google/nano-banana-pro
 */
export const createApiGenerateImageGoogleNanoBananaPro = async (args: CreateApiGenerateImageGoogleNanoBananaProArgs, options?: CreateApiGenerateImageGoogleNanoBananaProOptions) => {
const {baseUrl = "https://api.krea.ai", 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['X-Webhook-URL'] != null) headers.set("X-Webhook-URL", String(args['X-Webhook-URL']))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/generate/image/google/nano-banana-pro${query.size > 0 ? `?${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(createApiGenerateImageGoogleNanoBananaProResponse, await res.json())
};