import {z} from 'zod'

export type CreateApiSpeechToTextTranslateArgs = {'api-subscription-key': string, body: BodyInit};

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

export const sarvamModelAPISpeechToTextTranslateLanguage = z.enum(["hi-IN", "bn-IN", "kn-IN", "ml-IN", "mr-IN", "od-IN", "pa-IN", "ta-IN", "te-IN", "gu-IN", "en-IN", "as-IN", "ur-IN", "ne-IN", "kok-IN", "ks-IN", "sd-IN", "sa-IN", "sat-IN", "mni-IN", "brx-IN", "mai-IN", "doi-IN"]);

export const sarvamModelAPIDiarizedEntry = z.object({transcript: z.string(), start_time_seconds: z.number(), end_time_seconds: z.number(), speaker_id: z.string()});

export const sarvamModelAPIDiarizedTranscript = z.object({entries: z.array(sarvamModelAPIDiarizedEntry)});

export const sarvamModelAPISpeechToTextTranslateResponse = z.object({request_id: z.string().nullable(), transcript: z.string(), language_code: sarvamModelAPISpeechToTextTranslateLanguage.nullable(), diarized_transcript: sarvamModelAPIDiarizedTranscript.nullable().optional(), language_probability: z.number().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
};

/**
 * Speech To Text Translate
 * 
 * POST /speech-to-text-translate
 */
export const createApiSpeechToTextTranslate = async (args: CreateApiSpeechToTextTranslateArgs, options?: CreateApiSpeechToTextTranslateOptions) => {
const {baseUrl = "https://api.sarvam.ai", fetch: fetchFn = fetch} = options ?? {}

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

if (args['api-subscription-key'] != null) headers.set("api-subscription-key", String(args['api-subscription-key']))

const url = `${baseUrl.replace(/\/+$/, '')}/speech-to-text-translate${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: args.body})

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

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