eve/dist/src/public/channels/twilio/twilioChannel.js

Filesystem-first framework for durable backend AI agents that run anywhere.

import{createLogger}from"#internal/logging.js";import{readNonEmptyString}from"#shared/guards.js";import{GET,POST,defineChannel}from"#public/definitions/channel.js";import"#public/channels/twilio/verify.js";import{callTwilioApi,sendTwilioMessage,twilioContinuationToken,updateTwilioCall}from"#public/channels/twilio/api.js";import{emptyTwilioResponse,gatherSpeechTwilioResponse,sayTwilioResponse}from"#public/channels/twilio/twiml.js";import{defaultEvents,defaultOnText,defaultOnVoice,defaultOnVoiceTranscription}from"#public/channels/twilio/defaults.js";import{formatTwilioContextBlock,parseTwilioTextMessage,parseTwilioVoiceCall,parseTwilioVoiceTranscription}from"#public/channels/twilio/inbound.js";import{buildTwilioActionUrl,buildTwilioRoutes,verifyTwilioInbound}from"#public/channels/twilio/routing.js";const log=createLogger(`twilio.channel`);function twilioChannel(e){assertAllowFromConfigured(e);let t=buildTwilioRoutes(e.route??`/eve/v1/twilio`),n=e.onText??defaultOnText,r=e.onVoice??defaultOnVoice,i=e.onVoiceTranscription??defaultOnVoiceTranscription,a={...defaultEvents,...e.events},o=handleTwilioMessages({config:e,onText:n}),s=handleTwilioVoice({config:e,onVoice:r,routes:t}),c=handleTwilioTranscription({config:e,onVoiceTranscription:i,routes:t});return defineChannel({kindHint:`twilio`,turnPolicy:e.turnPolicy,state:{from:null,to:null,lastCallSid:null,lastMessageSid:null},metadata(e){return{from:e.from,lastCallSid:e.lastCallSid??null,lastMessageSid:e.lastMessageSid??null,to:e.to}},audience:()=>`private`,context(t,n){return rebuildTwilioContext(t,n,e)},routes:[GET(t.messages,o),POST(t.messages,o),GET(t.voice,s),POST(t.voice,s),GET(t.transcription,c),POST(t.transcription,c)],async receive(t,{from:n}){let r=readNonEmptyString(t.target.phoneNumber);if(!r)throw Error(`twilioChannel().receive requires target.phoneNumber.`);let i=readNonEmptyString(t.target.from)??e.messaging?.from??null;return n(twilioContinuationToken(r,i??void 0)).send(t.message,{auth:t.auth,state:{from:r,lastCallSid:null,lastMessageSid:null,to:i}})},events:a})}function handleTwilioMessages(e){return async(t,{from:n,waitUntil:r})=>{let i=await verifyTwilioInbound(t,e.config);if(i===null)return new Response(`unauthorized`,{status:401});let a=parseTwilioTextMessage(i.params);return a?await isAllowed(a.from,e.config.allowFrom)?(r(dispatchText({config:e.config,message:a,onText:e.onText,from:n})),emptyTwilioResponse()):new Response(`forbidden`,{status:403}):emptyTwilioResponse()}}function handleTwilioVoice(e){return async t=>{let n=await verifyTwilioInbound(t,e.config);if(n===null)return new Response(`unauthorized`,{status:401});let r=parseTwilioVoiceCall(n.params);if(!r)return sayTwilioResponse(`Missing caller information.`);if(!await isAllowed(r.from,e.config.allowFrom))return new Response(`forbidden`,{status:403});let i=await acceptVoiceCall({call:r,config:e.config,onVoice:e.onVoice});if(i===null)return new Response(`forbidden`,{status:403});let a=i??{};return gatherSpeechTwilioResponse({actionUrl:await buildTwilioActionUrl(t,e.config,e.routes.transcription),hints:a.hints??e.config.voice?.hints,language:a.language??e.config.voice?.language,profanityFilter:a.profanityFilter??e.config.voice?.profanityFilter,prompt:a.prompt??e.config.voice?.prompt??`Please say your message after the tone.`,speechModel:a.speechModel??e.config.voice?.speechModel,speechTimeout:a.speechTimeout??e.config.voice?.speechTimeout??`auto`,timeoutSeconds:a.timeoutSeconds??e.config.voice?.timeoutSeconds,voice:a.voice??e.config.voice?.voice})}}function handleTwilioTranscription(e){return async(t,{from:n,waitUntil:r})=>{let i=await verifyTwilioInbound(t,e.config);if(i===null)return new Response(`unauthorized`,{status:401});let a=parseTwilioVoiceTranscription(i.params);return a?await isAllowed(a.from,e.config.allowFrom)?(r(dispatchVoiceTranscription({config:e.config,onVoiceTranscription:e.onVoiceTranscription,from:n,transcription:a})),sayTwilioResponse(e.config.voice?.acknowledgement??`Thanks. I'll follow up by text.`)):new Response(`forbidden`,{status:403}):gatherSpeechTwilioResponse({actionUrl:await buildTwilioActionUrl(t,e.config,e.routes.transcription),language:e.config.voice?.language,prompt:e.config.voice?.prompt??`Please say your message after the tone.`,speechTimeout:e.config.voice?.speechTimeout??`auto`,timeoutSeconds:e.config.voice?.timeoutSeconds})}}function rebuildTwilioContext(e,t,n){return{state:e,twilio:buildTwilioHandle({callSid:e.lastCallSid??void 0,config:n,from:e.from??``,to:e.to??void 0})}}function buildTwilioHandle(e){let t=e.config.api,n=e.config.credentials,r=e.config.messaging?.from??e.to,i=e.config.messaging?.messagingServiceSid,a=e.config.messaging?.statusCallbackUrl;return{callSid:e.callSid,from:e.from,to:e.to,request(e,r){return callTwilioApi({apiBaseUrl:t?.apiBaseUrl,body:r,credentials:n,fetch:t?.fetch,path:e})},sendMessage(o,s){return sendTwilioMessage({apiBaseUrl:t?.apiBaseUrl,body:o,credentials:n,fetch:t?.fetch,from:s?.from??r,messagingServiceSid:s?.messagingServiceSid??i,statusCallbackUrl:s?.statusCallbackUrl??a,to:s?.to??e.from})},updateCall(e,r){return updateTwilioCall({apiBaseUrl:t?.apiBaseUrl,callSid:e,credentials:n,fetch:t?.fetch,twiml:r})}}}function assertAllowFromConfigured(e){if(e?.allowFrom===void 0)throw Error(`twilioChannel requires allowFrom. Use allowFrom: "*" to allow all numbers.`)}async function dispatchText(e){let{message:t}=e,n={twilio:buildTwilioHandle({callSid:void 0,config:e.config,from:t.from,to:t.to})},r;try{r=await e.onText(n,t)}catch(e){log.error(`text handler failed`,{error:e});return}if(r==null)return;let i=formatTwilioContextBlock({channel:`text`,from:t.from,messageSid:t.messageSid,to:t.to});try{await e.from(twilioContinuationToken(t.from,t.to)).send(t.body,{auth:r.auth,context:[i],state:{from:t.from,lastCallSid:null,lastMessageSid:t.messageSid??null,to:t.to??null},title:r.title})}catch(e){log.error(`text delivery failed`,{error:e})}}async function acceptVoiceCall(e){let{call:t}=e,n={twilio:buildTwilioHandle({callSid:t.callSid,config:e.config,from:t.from,to:t.to})};try{return await e.onVoice(n,t)}catch(e){return log.error(`voice handler failed`,{error:e}),null}}async function dispatchVoiceTranscription(e){let{transcription:t}=e,n={twilio:buildTwilioHandle({callSid:t.callSid,config:e.config,from:t.from,to:t.to})},r;try{r=await e.onVoiceTranscription(n,t)}catch(e){log.error(`voice transcription handler failed`,{error:e});return}if(r==null)return;let i=formatTwilioContextBlock({callSid:t.callSid,channel:`voice`,from:t.from,to:t.to});try{await e.from(twilioContinuationToken(t.from,t.to)).send(t.text,{auth:r.auth,context:[i],state:{from:t.from,lastCallSid:t.callSid??null,lastMessageSid:null,to:t.to??null},title:r.title})}catch(e){log.error(`voice transcription delivery failed`,{error:e})}}async function isAllowed(e,t){let n=typeof t==`function`?await t():t;return n===`*`?!0:typeof n==`string`?n===e:n.includes(e)}export{twilioChannel};