lots of notifier improvements

lib/plugins.js

@@ -2,7 +2,6 @@
 
 var _ = require('lodash')
 var async = require('async')
-var R = require('ramda')
 
 var BigNumber = require('bignumber.js')
 
@@ -15,6 +14,7 @@ var uuid = require('node-uuid')
 var tradeIntervals = {}
 
 var CHECK_NOTIFICATION_INTERVAL = 60 * 1000
+var ALERT_SEND_INTERVAL = 60 * 60 * 1000
 var POLLING_RATE = 60 * 1000 // poll each minute
 var REAP_RATE = 2 * 1000
 var PENDING_TIMEOUT = 70 * 1000
@@ -51,6 +51,9 @@ var coins = {
   ETH: {unitScale: 18}
 }
 
+var alertFingerprint = null
+var lastAlertTime = null
+
 // that's basically a constructor
 exports.init = function init (databaseHandle) {
   if (!databaseHandle) {
@@ -428,7 +431,9 @@ exports.dispenseAck = function dispenseAck (session, rec) {
 }
 
 exports.fiatBalance = function fiatBalance (cryptoCode) {
-  var rawRate = exports.getDeviceRate(cryptoCode).rates.ask
+  var deviceRate = exports.getDeviceRate(cryptoCode)
+  if (!deviceRate) return null
+  var rawRate = deviceRate.rates.ask
   var commission = cachedConfig.exchanges.settings.commission
   var lastBalance = lastBalances[cryptoCode]
 
@@ -634,49 +639,95 @@ exports.getcryptoCodes = function getcryptoCodes () {
   return cryptoCodes
 }
 
-function sendMessage (rec, cb) {
-  console.log('DEBUG5')
-  cb = cb || function () {}
+function sendMessage (rec) {
+  console.log('DEBUG50')
+  console.log('%j', rec)
   console.log(cachedConfig.exchanges.plugins.current.notify)
   var pluginTypes = JSON.parse(cachedConfig.exchanges.plugins.current.notify)
-  console.log('DEBUG7')
   console.log(pluginTypes)
   var pluginPromises = pluginTypes.map(function (pluginType) {
-    if (pluginType === 'email') return emailPlugin.sendMessage(rec, cb)
-    if (pluginType === 'sms') return smsPlugin.sendMessage(rec, cb)
+    if (pluginType === 'email') return emailPlugin.sendMessage(rec)
+    if (pluginType === 'sms') return smsPlugin.sendMessage(rec)
     throw new Error('No such plugin type: ' + pluginType)
   })
   return Promise.all(pluginPromises)
 }
+exports.sendMessage = sendMessage
+
+function sendNoAlerts () {
+  var subject = '[Lamassu] All clear'
+  var rec = {
+    sms: {
+      body: subject
+    },
+    email: {
+      subject: subject,
+      body: 'No errors are reported for your machines.'
+    }
+  }
+  return sendMessage(rec)
+}
 
 function checkNotification () {
-  notifier.checkStatus()
-  .then(function (alerts) {
-    if (alerts.length === 0) return
+  console.log('DEBUG39 ******************************')
+  return notifier.checkStatus()
+  .then(function (alertRec) {
+    console.log('DEBUG41 ******************************')
+    var fingerprint = notifier.alertFingerprint(alertRec)
+    if (!fingerprint) {
+      console.log('DEBUG40 ******************************')
+      var inAlert = !!alertFingerprint
+      alertFingerprint = null
+      lastAlertTime = null
+      if (inAlert) return sendNoAlerts()
+    }
 
-    // var devices = R.keys(alerts.devices)
-    var alertRecs = alerts.general
-    R.keys(alerts.devices).forEach(function (device) {
-      alertRecs = R.append(alerts.devices[device], alertRecs)
-    })
-    var alertTypes = alertRecs.pluck('code', alerts)
-    var body = ''
+    console.log('DEBUG42 ******************************')
+
+    var alertChanged = fingerprint === alertFingerprint &&
+      lastAlertTime - Date.now() < ALERT_SEND_INTERVAL
+    if (alertChanged) return
+
+    console.log('DEBUG43 ******************************')
+
+    var subject = notifier.alertSubject(alertRec)
     var rec = {
       sms: {
-        body: '[Lamassu] Errors reported: ' + alertTypes.join(', ')
+        body: subject
       },
       email: {
-        subject: '[Lamassu] Errors reported: ' + alertTypes.join(', '),
-        body: body
+        subject: subject,
+        body: notifier.printEmailAlerts(alertRec)
       }
     }
-    sendMessage(rec)
+    alertFingerprint = fingerprint
+    lastAlertTime = Date.now()
+    return sendMessage(rec)
+  })
+  .then(function () {
+    logger.debug('Successfully sent alerts')
   })
   .catch(function (err) {
     logger.error(err)
   })
 }
 
+function checkBalances () {
+  var cryptoCodes = exports.getcryptoCodes()
+
+  var balances = []
+  cryptoCodes.forEach(function (cryptoCode) {
+    var balance = exports.fiatBalance(cryptoCode)
+    if (!balance) return
+    var rec = {fiatBalance: balance, cryptoCode: cryptoCode, fiatCode: deviceCurrency}
+    balances.push(rec)
+  })
+
+  return balances
+}
+
 exports.startCheckingNotification = function startCheckingNotification () {
+  notifier.init(db, checkBalances)
+  checkNotification()
   setInterval(checkNotification, CHECK_NOTIFICATION_INTERVAL)
 }