import {z} from 'zod'

export type GenerateRequest = {prompt: string, model: 'nai-diffusion-4-5-full' | 'nai-diffusion-4-5-curated', n?: number | undefined, width?: number | undefined, height?: number | undefined, seed?: string | undefined, steps?: number | undefined, scale?: number | undefined, negative_prompt?: string | undefined, quality_toggle?: boolean | undefined, sampler?: ('Euler Ancestral' | 'Euler' | 'DPM++ 2S Ancestral' | 'DPM++ 2M SDE' | 'DPM++ 2M' | 'DPM++ SDE') | undefined, noise_schedule?: ('karras' | 'exponential' | 'polyexponential') | undefined, character_prompts?: (Array<{prompt: string, uc?: string | undefined, center: {x: number, y: number}}>) | undefined, vibe_transfer?: (Array<{image: string, strength?: number | undefined}>) | undefined, character_reference?: (Array<{image: string, type?: ('character&style' | 'character' | 'style') | undefined, strength?: number | undefined, fidelity?: number | undefined}>) | undefined, hook_url?: string | undefined};

export type CreateApiGrokGenerationsArgs = {body: GenerateRequest};

export type CreateApiGrokGenerationsOptions = {baseUrl?: string | undefined, CustomApiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const createApiGrokGenerationsResponse = z.object({status: z.string(), message: z.string(), data: z.object({})});

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 videos from text & images
 * 
 * POST /grok/generations
 */
export const createApiGrokGenerations = async (args: CreateApiGrokGenerationsArgs, options?: CreateApiGrokGenerationsOptions) => {
const {baseUrl = "https://api.ttapi.io", fetch: fetchFn = fetch, CustomApiKey} = options ?? {}

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

if (CustomApiKey !== undefined) headers.set("TT-API-KEY", CustomApiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/grok/generations${query.size > 0 ? `?${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(createApiGrokGenerationsResponse, await res.json())
};