Bridge worker updates

apps/bridge-worker/tasks/voice/twilio-recording.ts

@@ -0,0 +1,101 @@
+import Wreck from "@hapi/wreck";
+import { withDb, AppDatabase } from "../../lib/db";
+import { twilioClientFor } from "../../lib/common";
+import { CallInstance } from "twilio/lib/rest/api/v2010/account/call";
+import workerUtils from "../../lib/utils";
+
+interface WebhookPayload {
+  startTime: string;
+  endTime: string;
+  to: string;
+  from: string;
+  duration: string;
+  callSid: string;
+  recording: string;
+  mimeType: string;
+}
+
+const getTwilioRecording = async (url: string) => {
+  try {
+    const { payload } = await Wreck.get(url);
+    return { recording: payload as Buffer };
+  } catch (error: any) {
+    console.error(error.output);
+    return { error: error.output };
+  }
+};
+
+const formatPayload = (
+  call: CallInstance,
+  recording: Buffer,
+): WebhookPayload => {
+  return {
+    startTime: call.startTime.toISOString(),
+    endTime: call.endTime.toISOString(),
+    to: call.toFormatted,
+    from: call.fromFormatted,
+    duration: call.duration,
+    callSid: call.sid,
+    recording: recording.toString("base64"),
+    mimeType: "audio/mpeg",
+  };
+};
+
+const notifyWebhooks = async (
+  db: AppDatabase,
+  voiceLineId: string,
+  call: CallInstance,
+  recording: Buffer,
+) => {
+  const webhooks = await db.webhooks.findAllByBackendId("voice", voiceLineId);
+  if (webhooks && webhooks.length === 0) return;
+
+  webhooks.forEach(({ id }) => {
+    const payload = formatPayload(call, recording);
+    workerUtils.addJob(
+      "notify-webhook",
+      {
+        payload,
+        webhookId: id,
+      },
+      {
+        // this de-depuplicates the job
+        jobKey: `webhook-${id}-call-${call.sid}`,
+      },
+    );
+  });
+};
+
+interface TwilioRecordingTaskOptions {
+  accountSid: string;
+  callSid: string;
+  recordingSid: string;
+  voiceLineId: string;
+}
+
+const twilioRecordingTask = async (
+  options: TwilioRecordingTaskOptions,
+): Promise<void> =>
+  withDb(async (db: AppDatabase) => {
+    const { voiceLineId, accountSid, callSid, recordingSid } = options;
+
+    const voiceLine = await db.voiceLines.findById({ id: voiceLineId });
+    if (!voiceLine) return;
+
+    const provider = await db.voiceProviders.findByTwilioAccountSid(accountSid);
+    if (!provider) return;
+
+    const client = twilioClientFor(provider);
+    const meta = await client.recordings(recordingSid).fetch();
+
+    const mp3Url = "https://api.twilio.com/" + meta.uri.slice(0, -4) + "mp3";
+    const { recording, error } = await getTwilioRecording(mp3Url);
+    if (error) {
+      throw new Error(`failed to get recording for call ${callSid}`);
+    }
+
+    const call = await client.calls(callSid).fetch();
+    await notifyWebhooks(db, voiceLineId, call, recording!);
+  });
+
+export default twilioRecordingTask;