import {z} from 'zod'

export type ConvertTextToSpeechParameters = {pitch_shift?: number | undefined, pitch_variance?: number | undefined, speed?: number | undefined, duration?: number | undefined, similarity?: number | undefined, text_guidance?: number | undefined, subharmonic_amplitude_control?: number | undefined};

export type PredictTTSDurationRequest = {text: string, language: 'en' | 'ko' | 'ja' | 'bg' | 'cs' | 'da' | 'el' | 'es' | 'et' | 'fi' | 'hu' | 'it' | 'nl' | 'pl' | 'pt' | 'ro' | 'ar' | 'de' | 'fr' | 'hi' | 'id' | 'ru' | 'vi' | 'hr' | 'lt' | 'lv' | 'sk' | 'sl' | 'sv' | 'tr' | 'uk', style?: string | undefined, model?: ('sona_speech_1' | 'sona_speech_2' | 'sona_speech_2_flash' | 'supertonic_api_1' | 'supertonic_api_3') | undefined, output_format?: ('wav' | 'mp3') | undefined, voice_settings?: ConvertTextToSpeechParameters | undefined};

export type CreateApiV1PredictDurationVoiceIdArgs = {voice_id: string, body: PredictTTSDurationRequest};

export type CreateApiV1PredictDurationVoiceIdOptions = {baseUrl?: string | undefined, apiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const createApiV1PredictDurationVoiceIdResponse = z.object({duration: z.number().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
};

/**
 * Predict text-to-speech duration
 * 
 * POST /v1/predict-duration/{voice_id}
 */
export const createApiV1PredictDurationVoiceId = async (args: CreateApiV1PredictDurationVoiceIdArgs, options?: CreateApiV1PredictDurationVoiceIdOptions) => {
const {baseUrl = "https://supertoneapi.com", fetch: fetchFn = fetch, apiKey} = options ?? {}

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

if (apiKey !== undefined) headers.set("x-sup-api-key", apiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/predict-duration/${encodeURIComponent(String(args.voice_id))}${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(createApiV1PredictDurationVoiceIdResponse, await res.json())
};