import {z} from 'zod'

export type ElevenLabsVoiceSettings = {stability?: number | undefined, similarity_boost?: number | undefined, style?: number | undefined, use_speaker_boost?: boolean | undefined};

export type ElevenLabsTTSRequest = {text: string, model_id?: (string | null) | undefined, voice_settings?: (ElevenLabsVoiceSettings | null) | undefined};

export type CreateApi11labsV1TextToSpeechVoiceIdArgs = {voice_id: string, output_format?: (string | null) | undefined, body: ElevenLabsTTSRequest};

export type CreateApi11labsV1TextToSpeechVoiceIdOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const createApi11labsV1TextToSpeechVoiceIdResponse = z.unknown();

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
};

/**
 * Text To Speech
 * 
 * POST /11labs/v1/text-to-speech/{voice_id}
 */
export const createApi11labsV1TextToSpeechVoiceId = async (args: CreateApi11labsV1TextToSpeechVoiceIdArgs, options: CreateApi11labsV1TextToSpeechVoiceIdOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.output_format != null) query.append("output_format", String(args.output_format))

const url = `${baseUrl.replace(/\/+$/, '')}/11labs/v1/text-to-speech/${encodeURIComponent(String(args.voice_id))}${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(createApi11labsV1TextToSpeechVoiceIdResponse, await res.json())
};