createSayHandler.ts•2.11 kB
/**
* Copyright (C) 2025 by Fonoster Inc (https://fonoster.com)
* http://github.com/fonoster/fonoster
*
* This file is part of Fonoster
*
* Licensed under the MIT License (the "License");
* you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* https://opensource.org/licenses/MIT
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { SayRequest } from "@fonoster/common";
import { Client } from "ari-client";
import { nanoid } from "nanoid";
import { struct } from "pb-util";
import { z } from "zod";
import { APISERVER_HOST, HTTP_BRIDGE_PORT } from "../../envs";
import { VoiceClient } from "../types";
import { awaitForPlaybackFinished } from "./utils/awaitForPlaybackFinished";
import { withErrorHandling } from "./utils/withErrorHandling";
const sayRequestSchema = z.object({
text: z.string(),
sessionRef: z.string(),
playbackRef: z.string().optional(),
options: z.record(z.unknown()).optional()
});
const getMediaUrl = (filename: string) =>
`sound:http://${APISERVER_HOST}:${HTTP_BRIDGE_PORT}/api/sounds/${filename}.sln16`;
function createSayHandler(ari: Client, voiceClient: VoiceClient) {
return withErrorHandling(async (request: SayRequest) => {
const { sessionRef: channelId } = request;
sayRequestSchema.parse(request);
const playbackRef = request.playbackRef || nanoid(10);
const mediaId = await voiceClient.synthesize(
request.text,
request.options ? struct.decode(request.options) : {}
);
await ari.channels.play({
channelId,
media: getMediaUrl(mediaId),
playbackId: playbackRef
});
await awaitForPlaybackFinished(ari, playbackRef);
voiceClient.sendResponse({
sayResponse: {
playbackRef
}
});
});
}
export { createSayHandler };