72 lines
3.7 KiB
TypeScript
72 lines
3.7 KiB
TypeScript
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import { connectSms, routeToAgent } from '../api/channels'
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import { env } from '../env'
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import { FakeExternals } from '../fakes/externals'
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import { unique } from '../support/ids'
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import { step } from '../support/step'
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import { Chat, hmac, phoneNumber, postWebhook, samePhone, type ChannelConnector } from './chat'
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// SMS webhooks are per account and signed over the public webhook URL, which the
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// backend rebuilds from BACKEND_URL — the same URL the test posts to.
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interface TwilioSend { From: string; To: string; Body: string }
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interface PlivoSend { src: string; dst: string; text: string }
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/** Twilio: X-Twilio-Signature = base64(HMAC-SHA1(auth token, url + sorted key/value pairs)). */
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export const twilio: ChannelConnector = ({ api, request, agentId }) =>
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step('Connect a Twilio number', async () => {
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const authToken = unique('twilio-token')
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const businessNumber = phoneNumber()
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const accountSid = unique('AC')
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const account = await connectSms(api, 'twilio', businessNumber, { account_sid: accountSid, auth_token: authToken })
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await routeToAgent(api, account.id, agentId)
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const externals = new FakeExternals(request)
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const path = `/webhooks/sms/twilio/${account.id}`
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return {
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chatWith(customerName) {
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const customerNumber = phoneNumber()
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return new Chat('SMS (Twilio)', customerName, async (text) => {
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const form = { From: customerNumber, To: businessNumber, Body: text, MessageSid: unique('SM') }
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const signed = `${env.apiUrl}${path}` + Object.keys(form).sort().map((k) => k + form[k as keyof typeof form]).join('')
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await postWebhook(request, path, { form }, { 'x-twilio-signature': hmac('sha1', authToken, signed).toString('base64') })
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}, async () => (await externals.calls('twilio', 'Messages.json', { contains: accountSid }))
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// Sent through this account (its SID in the path) from this number.
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.filter((c) => c.status === 200 && c.path.includes(`/Accounts/${accountSid}/`))
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.map((c) => c.body as TwilioSend)
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.filter((b) => samePhone(b.To, customerNumber) && samePhone(b.From, businessNumber))
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.map((b) => b.Body))
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},
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}
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})
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/** Plivo: X-Plivo-Signature-V3 = base64(HMAC-SHA256(auth token, url + nonce)). */
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export const plivo: ChannelConnector = ({ api, request, agentId }) =>
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step('Connect a Plivo number', async () => {
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const authToken = unique('plivo-token')
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const businessNumber = phoneNumber()
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const authId = unique('MA')
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const account = await connectSms(api, 'plivo', businessNumber, { auth_id: authId, auth_token: authToken })
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await routeToAgent(api, account.id, agentId)
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const externals = new FakeExternals(request)
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const path = `/webhooks/sms/plivo/${account.id}`
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return {
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chatWith(customerName) {
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// Plivo sends numbers without the leading +.
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const customerNumber = phoneNumber().slice(1)
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return new Chat('SMS (Plivo)', customerName, async (text) => {
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const nonce = unique('nonce')
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await postWebhook(request, path, {
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form: { From: customerNumber, To: businessNumber.slice(1), Text: text, MessageUUID: unique('uuid') },
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}, {
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'x-plivo-signature-v3': hmac('sha256', authToken, `${env.apiUrl}${path}${nonce}`).toString('base64'),
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'x-plivo-signature-v3-nonce': nonce,
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})
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}, async () => (await externals.calls('plivo', 'Message', { contains: authId }))
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.filter((c) => c.status === 200 && c.path.includes(`/Account/${authId}/`))
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.map((c) => c.body as PlivoSend)
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.filter((b) => samePhone(b.dst, customerNumber) && samePhone(b.src, businessNumber))
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.map((b) => b.text))
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},
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}
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})
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