Add support for coupon codes (#747)

* [BREAKING] `now domains`: remove `--config` flag

Needed so we can introduce `--coupon`

* Remove test code

* Fix the amount of erased lines upon error

* Make it async

* Add option to clear the output after adding the card

* Tweak success message

* Add support for coupon codes

bin/domains/buy.js

@@ -5,14 +5,14 @@ const wait = require('../../lib/utils/output/wait')
 const cmd = require('../../lib/utils/output/cmd')
 const param = require('../../lib/utils/output/param')
 const info = require('../../lib/utils/output/info')
-const uid = require('../../lib/utils/output/uid')
 const success = require('../../lib/utils/output/success')
 const stamp = require('../../lib/utils/output/stamp')
 const promptBool = require('../../lib/utils/input/prompt-bool')
 const eraseLines = require('../../lib/utils/output/erase-lines')
 const treatBuyError = require('../../lib/utils/domains/treat-buy-error')
+const NowCreditCards = require('../../lib/credit-cards')
 
-module.exports = async function({ domains, args, currentTeam, user }) {
+module.exports = async function({ domains, args, currentTeam, user, coupon }) {
   const name = args[0]
   let elapsed
 
@@ -21,14 +21,54 @@ module.exports = async function({ domains, args, currentTeam, user }) {
   }
 
   const nameParam = param(name)
-  elapsed = stamp()
+  let stopSpinner
-  let stopSpinner = wait(`Checking availability for ${nameParam}`)
 
   let price
   let period
+  let validCoupon
   try {
+    if (coupon) {
+      stopSpinner = wait(`Validating coupon ${param(coupon)}`)
+      const creditCards = new NowCreditCards({
+        apiUrl: domains._agent._url,
+        token: domains._token,
+        debug: domains._debug,
+        currentTeam
+      })
+      const [couponInfo, { cards }] = await Promise.all([
+        domains.coupon(coupon),
+        creditCards.ls()
+      ])
+      stopSpinner()
+
+      if (!couponInfo.isValid) {
+        return error(`The coupon ${param(coupon)} is invalid`)
+      }
+
+      if (!couponInfo.canBeUsed) {
+        return error(`The coupon ${param(coupon)} has already been used`)
+      }
+
+      validCoupon = true
+
+      if (cards.length === 0) {
+        info(
+          'You have no credit cards on file. Please add one in order to claim your free domain'
+        )
+        info(`Your card will ${bold('not')} be charged`)
+
+        await require('../now-billing-add')({
+          creditCards,
+          currentTeam,
+          user,
+          clear: true
+        })
+      }
+    }
+    elapsed = stamp()
+    stopSpinner = wait(`Checking availability for ${nameParam}`)
     const json = await domains.price(name)
-    price = json.price
+    price = validCoupon ? 0 : json.price
     period = json.period
   } catch (err) {
     stopSpinner()
@@ -61,9 +101,8 @@ module.exports = async function({ domains, args, currentTeam, user }) {
 
   stopSpinner = wait('Purchasing')
   elapsed = stamp()
-  let domain
   try {
-    domain = await domains.buy(name)
+    await domains.buy({ name, coupon })
   } catch (err) {
     stopSpinner()
     return treatBuyError(err)
@@ -71,7 +110,7 @@ module.exports = async function({ domains, args, currentTeam, user }) {
 
   stopSpinner()
 
-  success(`Domain purchased and created ${uid(domain.uid)} ${elapsed()}`)
+  success(`Domain ${nameParam} purchased ${elapsed()}`)
   info(
     `You may now use your domain as an alias to your deployments. Run ${cmd(
       'now alias --help'

bin/now-billing-add.js

@@ -19,7 +19,12 @@ function expDateMiddleware(data) {
   return data
 }
 
-module.exports = function({ creditCards, currentTeam, user }) {
+module.exports = async function({
+  creditCards,
+  currentTeam,
+  user,
+  clear = false
+}) {
   const state = {
     error: undefined,
     cardGroupLabel: `> ${chalk.bold(
@@ -221,6 +226,10 @@ module.exports = function({ creditCards, currentTeam, user }) {
         address1: state.address1.value
       })
       stopSpinner()
+      if (clear) {
+        const linesToClear = state.error ? 15 : 14
+        process.stdout.write(ansiEscapes.eraseLines(linesToClear))
+      }
       success(
         `${state.cardNumber
           .brand} ending in ${res.last4} was added to ${chalk.bold(
@@ -229,7 +238,7 @@ module.exports = function({ creditCards, currentTeam, user }) {
       )
     } catch (err) {
       stopSpinner()
-      const linesToClear = state.error ? 13 : 12
+      const linesToClear = state.error ? 15 : 14
       process.stdout.write(ansiEscapes.eraseLines(linesToClear))
       state.error = `${chalk.red(
         '> Error!'
@@ -238,5 +247,9 @@ module.exports = function({ creditCards, currentTeam, user }) {
     }
   }
 
-  render().catch(console.error)
+  try {
+    await render()
+  } catch (err) {
+    console.erorr(err)
+  }
 }

bin/now-domains.js

@@ -22,11 +22,11 @@ const toHost = require('../lib/to-host')
 const { handleError, error } = require('../lib/error')
 
 const argv = minimist(process.argv.slice(2), {
-  string: ['config', 'token'],
+  string: ['coupon', 'token'],
   boolean: ['help', 'debug', 'external', 'force'],
   alias: {
     help: 'h',
-    config: 'c',
+    coupon: 'c',
     debug: 'd',
     external: 'e',
     force: 'f',
@@ -44,9 +44,6 @@ const help = () => {
   ${chalk.dim('Options:')}
 
     -h, --help              Output usage information
-    -c ${chalk.bold.underline('FILE')}, --config=${chalk.bold.underline(
-    'FILE'
-  )}  Config file
     -d, --debug             Debug mode [off]
     -e, --external          Use external DNS server
     -f, --force             Skip DNS verification
@@ -142,10 +139,6 @@ const help = () => {
 const debug = argv.debug
 const apiUrl = argv.url || 'https://api.zeit.co'
 
-if (argv.config) {
-  cfg.setConfigFile(argv.config)
-}
-
 if (argv.help || !subcommand) {
   help()
   exit(0)
@@ -345,7 +338,8 @@ async function run({ token, config: { currentTeam, user } }) {
         domains: domain,
         args,
         currentTeam,
-        user
+        user,
+        coupon: argv.coupon
       })
       break
     }

lib/domains.js

@@ -197,18 +197,12 @@ module.exports = class Domains extends Now {
     })
   }
 
-  async buy(name) {
+  async buy({ name, coupon }) {
     if (!name) {
       throw new Error('`name` is not defined')
     }
 
-    const rawBody = { name }
+    const body = JSON.stringify({ name, coupon })
-
-    if (name.startsWith('test')) {
-      rawBody.dev = true
-    }
-
-    const body = JSON.stringify(rawBody)
 
     return this.retry(async (bail, attempt) => {
       if (this._debug) {
@@ -238,4 +232,33 @@ module.exports = class Domains extends Now {
       return json
     })
   }
+
+  async coupon(coupon) {
+    if (!coupon) {
+      throw new Error('`coupon` is not defined')
+    }
+
+    const query = encodeQuery({ coupon })
+
+    return this.retry(async (bail, attempt) => {
+      if (this._debug) {
+        console.time(`> [debug] #${attempt} GET /domains/buy?${query}`)
+      }
+
+      const res = await this._fetch(`/domains/buy?${query}`)
+      const json = await res.json()
+
+      if (res.status !== 200) {
+        const e = new Error(json.error.message)
+        e.code = json.error.code
+        return bail(e)
+      }
+
+      if (this._debug) {
+        console.timeEnd(`> [debug] #${attempt} GET /domains/buy?${query}`)
+      }
+
+      return json
+    })
+  }
 }

lib/utils/domains/treat-buy-error.js

@@ -18,6 +18,10 @@ module.exports = function(err) {
       error('Purchase failed – Unexpected error')
       break
     }
+    case 'forbidden_premium': {
+      error('A coupon cannot be used to register a premium domain')
+      break
+    }
     default: {
       error(err.message)
     }