FIX: time to first response metric

app/assets/javascripts/admin/models/report.js.es6

@@ -1,14 +1,12 @@
 import round from "discourse/lib/round";
 
 const Report = Discourse.Model.extend({
-  reportUrl: function() {
-    return("/admin/reports/" + this.get('type'));
-  }.property('type'),
+  reportUrl: Discourse.computed.fmt("type", "/admin/reports/%@"),
 
   valueAt(numDaysAgo) {
     if (this.data) {
-      var wantedDate = moment().subtract(numDaysAgo, 'days').format('YYYY-MM-DD');
-      var item = this.data.find( function(d) { return d.x === wantedDate; } );
+      const wantedDate = moment().subtract(numDaysAgo, "days").format("YYYY-MM-DD");
+      const item = this.data.find(d => d.x === wantedDate);
       if (item) {
         return item.y;
       }
@@ -16,128 +14,117 @@ const Report = Discourse.Model.extend({
     return 0;
   },
 
-  sumDays(startDaysAgo, endDaysAgo) {
+  valueFor(startDaysAgo, endDaysAgo) {
     if (this.data) {
-      var earliestDate = moment().subtract(endDaysAgo, 'days').startOf('day');
-      var latestDate = moment().subtract(startDaysAgo, 'days').startOf('day');
-      var d, sum = 0;
-      _.each(this.data,function(datum){
+      const earliestDate = moment().subtract(endDaysAgo, "days").startOf("day");
+      const latestDate = moment().subtract(startDaysAgo, "days").startOf("day");
+      var d, sum = 0, count = 0;
+      _.each(this.data, datum => {
         d = moment(datum.x);
-        if(d >= earliestDate && d <= latestDate) {
+        if (d >= earliestDate && d <= latestDate) {
           sum += datum.y;
+          count++;
         }
       });
+      if (this.get("method") === "average") { sum /= count; }
       return round(sum, -2);
     }
   },
 
-  todayCount: function() {
-    return this.valueAt(0);
-  }.property('data'),
+  todayCount:          function() { return this.valueAt(0); }.property("data"),
+  yesterdayCount:      function() { return this.valueAt(1); }.property("data"),
+  sevenDaysAgoCount:   function() { return this.valueAt(7); }.property("data"),
+  thirtyDaysAgoCount:  function() { return this.valueAt(30); }.property("data"),
 
-  yesterdayCount: function() {
-    return this.valueAt(1);
-  }.property('data'),
-
-  lastSevenDaysCount: function() {
-    return this.sumDays(1,7);
-  }.property('data'),
-
-  lastThirtyDaysCount: function() {
-    return this.sumDays(1,30);
-  }.property('data'),
-
-  sevenDaysAgoCount: function() {
-    return this.valueAt(7);
-  }.property('data'),
-
-  thirtyDaysAgoCount: function() {
-    return this.valueAt(30);
-  }.property('data'),
+  lastSevenDaysCount:  function() { return this.valueFor(1, 7); }.property("data"),
+  lastThirtyDaysCount: function() { return this.valueFor(1, 30); }.property("data"),
 
   yesterdayTrend: function() {
-    var yesterdayVal = this.valueAt(1);
-    var twoDaysAgoVal = this.valueAt(2);
-    if ( yesterdayVal > twoDaysAgoVal ) {
-      return 'trending-up';
-    } else if ( yesterdayVal < twoDaysAgoVal ) {
-      return 'trending-down';
+    const yesterdayVal = this.valueAt(1);
+    const twoDaysAgoVal = this.valueAt(2);
+    if (yesterdayVal > twoDaysAgoVal) {
+      return "trending-up";
+    } else if (yesterdayVal < twoDaysAgoVal) {
+      return "trending-down";
     } else {
-      return 'no-change';
+      return "no-change";
     }
-  }.property('data'),
+  }.property("data"),
 
   sevenDayTrend: function() {
-    var currentPeriod = this.sumDays(1,7);
-    var prevPeriod = this.sumDays(8,14);
-    if ( currentPeriod > prevPeriod ) {
-      return 'trending-up';
-    } else if ( currentPeriod < prevPeriod ) {
-      return 'trending-down';
+    const currentPeriod = this.valueFor(1, 7);
+    const prevPeriod = this.valueFor(8, 14);
+    if (currentPeriod > prevPeriod) {
+      return "trending-up";
+    } else if (currentPeriod < prevPeriod) {
+      return "trending-down";
     } else {
-      return 'no-change';
+      return "no-change";
     }
-  }.property('data'),
+  }.property("data"),
 
   thirtyDayTrend: function() {
-    if( this.get('prev30Days') ) {
-      var currentPeriod = this.sumDays(1,30);
-      if( currentPeriod > this.get('prev30Days') ) {
-        return 'trending-up';
-      } else if ( currentPeriod < this.get('prev30Days') ) {
-        return 'trending-down';
+    if (this.get("prev30Days")) {
+      const currentPeriod = this.valueFor(1, 30);
+      if (currentPeriod > this.get("prev30Days")) {
+        return "trending-up";
+      } else if (currentPeriod < this.get("prev30Days")) {
+        return "trending-down";
       }
     }
-    return 'no-change';
-  }.property('data', 'prev30Days'),
+    return "no-change";
+  }.property("data", "prev30Days"),
 
   icon: function() {
-    switch( this.get('type') ) {
-    case 'flags':
-      return 'flag';
-    case 'likes':
-      return 'heart';
-    default:
-      return null;
+    switch (this.get("type")) {
+      case "flags": return "flag";
+      case "likes": return "heart";
+      default:      return null;
     }
-  }.property('type'),
+  }.property("type"),
+
+  method: function() {
+    if (this.get("type") === "time_to_first_response") {
+      return "average";
+    } else {
+      return "sum";
+    }
+  }.property("type"),
 
   percentChangeString(val1, val2) {
-    var val = ((val1 - val2) / val2) * 100;
-    if( isNaN(val) || !isFinite(val) ) {
+    const val = ((val1 - val2) / val2) * 100;
+    if (isNaN(val) || !isFinite(val)) {
       return null;
-    } else if( val > 0 ) {
-      return '+' + val.toFixed(0) + '%';
+    } else if (val > 0) {
+      return "+" + val.toFixed(0) + "%";
     } else {
-      return val.toFixed(0) + '%';
+      return val.toFixed(0) + "%";
     }
   },
 
   changeTitle(val1, val2, prevPeriodString) {
-    var title = '';
-    var percentChange = this.percentChangeString(val1, val2);
-    if( percentChange ) {
-      title += percentChange + ' change. ';
-    }
-    title += 'Was ' + val2 + ' ' + prevPeriodString + '.';
+    const percentChange = this.percentChangeString(val1, val2);
+    var title = "";
+    if (percentChange) { title += percentChange + " change. "; }
+    title += "Was " + val2 + " " + prevPeriodString + ".";
     return title;
   },
 
   yesterdayCountTitle: function() {
-    return this.changeTitle( this.valueAt(1), this.valueAt(2),'two days ago');
-  }.property('data'),
+    return this.changeTitle(this.valueAt(1), this.valueAt(2), "two days ago");
+  }.property("data"),
 
   sevenDayCountTitle: function() {
-    return this.changeTitle( this.sumDays(1,7), this.sumDays(8,14), 'two weeks ago');
-  }.property('data'),
+    return this.changeTitle(this.valueFor(1, 7), this.valueFor(8, 14), "two weeks ago");
+  }.property("data"),
 
   thirtyDayCountTitle: function() {
-    return this.changeTitle( this.sumDays(1,30), this.get('prev30Days'), 'in the previous 30 day period');
-  }.property('data'),
+    return this.changeTitle(this.valueFor(1, 30), this.get("prev30Days"), "in the previous 30 day period");
+  }.property("data"),
 
   dataReversed: function() {
-    return this.get('data').toArray().reverse();
-  }.property('data')
+    return this.get("data").toArray().reverse();
+  }.property("data")
 
 });
 

test/javascripts/models/report-test.js.es6

@@ -14,8 +14,11 @@ test("counts", function() {
 
   equal(report.get('todayCount'), 5);
   equal(report.get('yesterdayCount'), 4);
-  equal(report.sumDays(2, 4), 6, "adds the values for the given range of days, inclusive");
+  equal(report.valueFor(2, 4), 6, "adds the values for the given range of days, inclusive");
   equal(report.get('lastSevenDaysCount'), 307, "sums 7 days excluding today");
+
+  report.set("method", "average");
+  equal(report.valueFor(2, 4), 2, "averages the values for the given range of days");
 });
 
 test("percentChangeString", function() {