import {z} from 'zod'

export type GetApiV1VoicesAccentsArgs = {language?: (string | null) | undefined, model_id?: (string | null) | undefined, 'xi-api-key'?: (string | null) | undefined};

export type GetApiV1VoicesAccentsOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const voiceAccentResponseModel = z.object({accent: z.string(), language: z.string(), code: z.string(), name: z.string()});

export const getVoiceAccentsResponseModel = z.object({accents: z.array(voiceAccentResponseModel)});

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
};

/**
 * Get Voice Accents
 * 
 * GET /v1/voices/accents
 */
export const getApiV1VoicesAccents = async (args: GetApiV1VoicesAccentsArgs, options: GetApiV1VoicesAccentsOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.language != null) query.append("language", String(args.language))
if (args.model_id != null) query.append("model_id", String(args.model_id))
if (args['xi-api-key'] != null) headers.set("xi-api-key", String(args['xi-api-key']))

const url = `${baseUrl.replace(/\/+$/, '')}/v1/voices/accents${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(getVoiceAccentsResponseModel, await res.json())
};