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{POST,defineChannel}from"#public/definitions/defineChannel.js";import{verifyTwilioRequest}from"#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";const log=createLogger(`twilio.channel`);function twilioChannel(e){assertAllowFromConfigured(e);let r=buildRoutes(e.route??`/eve/v1/twilio`),i=e.onText??defaultOnText,a=e.onVoice??defaultOnVoice,s=e.onVoiceTranscription??defaultOnVoiceTranscription,l={...defaultEvents,...e.events};return defineChannel({kindHint:`twilio`,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}},context(t,n){return rebuildTwilioContext(t,n,e)},routes:[POST(r.messages,async(t,{send:n,waitUntil:r})=>{let a=await verifyInbound(t,e);if(a===null)return new Response(`unauthorized`,{status:401});let o=parseTwilioTextMessage(a.params);return o?await isAllowed(o.from,e.allowFrom)?(r(dispatchText({config:e,message:o,onText:i,send:n})),emptyTwilioResponse()):new Response(`forbidden`,{status:403}):emptyTwilioResponse()}),POST(r.voice,async t=>{let n=await verifyInbound(t,e);if(n===null)return new Response(`unauthorized`,{status:401});let i=parseTwilioVoiceCall(n.params);if(!i)return sayTwilioResponse(`Missing caller information.`);if(!await isAllowed(i.from,e.allowFrom))return new Response(`forbidden`,{status:403});let o=await acceptVoiceCall({call:i,config:e,onVoice:a});if(o===null)return new Response(`forbidden`,{status:403});let s=o??{};return gatherSpeechTwilioResponse({actionUrl:await buildActionUrl(t,e,r.transcription),hints:s.hints??e.voice?.hints,language:s.language??e.voice?.language,profanityFilter:s.profanityFilter??e.voice?.profanityFilter,prompt:s.prompt??e.voice?.prompt??`Please say your message after the tone.`,speechModel:s.speechModel??e.voice?.speechModel,speechTimeout:s.speechTimeout??e.voice?.speechTimeout??`auto`,timeoutSeconds:s.timeoutSeconds??e.voice?.timeoutSeconds,voice:s.voice??e.voice?.voice})}),POST(r.transcription,async(t,{send:n,waitUntil:i})=>{let a=await verifyInbound(t,e);if(a===null)return new Response(`unauthorized`,{status:401});let o=parseTwilioVoiceTranscription(a.params);return o?await isAllowed(o.from,e.allowFrom)?(i(dispatchVoiceTranscription({config:e,onVoiceTranscription:s,send:n,transcription:o})),sayTwilioResponse(e.voice?.acknowledgement??`Thanks. I'll follow up by text.`)):new Response(`forbidden`,{status:403}):gatherSpeechTwilioResponse({actionUrl:await buildActionUrl(t,e,r.transcription),language:e.voice?.language,prompt:e.voice?.prompt??`Please say your message after the tone.`,speechTimeout:e.voice?.speechTimeout??`auto`,timeoutSeconds:e.voice?.timeoutSeconds})})],async receive(t,{send:n}){let r=readString(t.target.phoneNumber);if(!r)throw Error(`twilioChannel().receive requires target.phoneNumber.`);let i=readString(t.target.from)??e.messaging?.from??null;return n(t.message,{auth:t.auth,continuationToken:twilioContinuationToken(r,i??void 0),state:{from:r,lastCallSid:null,lastMessageSid:null,to:i}})},events:l})}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,o=e.config.messaging?.messagingServiceSid,c=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(i,s){return sendTwilioMessage({apiBaseUrl:t?.apiBaseUrl,body:i,credentials:n,fetch:t?.fetch,from:s?.from??r,messagingServiceSid:s?.messagingServiceSid??o,statusCallbackUrl:s?.statusCallbackUrl??c,to:s?.to??e.from})},updateCall(e,r){return updateTwilioCall({apiBaseUrl:t?.apiBaseUrl,callSid:e,credentials:n,fetch:t?.fetch,twiml:r})}}}function buildRoutes(e){let t=e.endsWith(`/`)?e.slice(0,-1):e;return{messages:`${t}/messages`,transcription:`${t}/voice/transcription`,voice:`${t}/voice`}}function assertAllowFromConfigured(e){if(e?.allowFrom===void 0)throw Error(`twilioChannel requires allowFrom. Use allowFrom: "*" to allow all numbers.`)}async function verifyInbound(e,t){try{return await verifyTwilioRequest(e,{authToken:t.credentials?.authToken,webhookUrl:t.webhookUrl})}catch(e){return log.warn(`twilio inbound verification failed`,{error:e}),null}}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.send({message:t.body,context:[i]},{auth:r.auth,continuationToken:twilioContinuationToken(t.from,t.to),state:{from:t.from,lastCallSid:null,lastMessageSid:t.messageSid??null,to:t.to??null}})}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.send({message:t.text,context:[i]},{auth:r.auth,continuationToken:twilioContinuationToken(t.from,t.to),state:{from:t.from,lastCallSid:t.callSid??null,lastMessageSid:null,to:t.to??null}})}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)}async function buildActionUrl(e,t,n){let r=typeof t.publicBaseUrl==`function`?await t.publicBaseUrl(e):t.publicBaseUrl;if(r)return new URL(n,ensureTrailingSlash(r)).toString();let i=new URL(e.url);return i.pathname=n,i.search=``,i.toString()}function ensureTrailingSlash(e){return e.endsWith(`/`)?e:`${e}/`}function readString(e){return typeof e==`string`&&e.length>0?e:void 0}export{twilioChannel};