analytics: Add total messages sent summary statistic.

static/js/stats/stats.js

@@ -122,6 +122,18 @@ function get_user_summary_statistics(data) {
     $("#id_active_fifteen_day_users").closest("summary-stats").show();
 }
 
+function get_total_messages_sent(data) {
+    if (data.length === 0) {
+        return;
+    }
+
+    const total_messages_sent = data.human.at(-1) + data.bot.at(-1);
+    const total_messages_string = total_messages_sent.toLocaleString();
+
+    $("#id_total_messages_sent").text(total_messages_string);
+    $("#id_total_messages_sent").closest("summary-stats").show();
+}
+
 // PLOTLY CHARTS
 function populate_messages_sent_over_time(data) {
     if (data.end_times.length === 0) {
@@ -312,6 +324,7 @@ function populate_messages_sent_over_time(data) {
     date_formatter = function (date) {
         return format_date(date, true);
     };
+    get_total_messages_sent(values);
     const cumulative_traces = make_traces(dates, values, "scatter", date_formatter);
 
     // Functions to draw and interact with the plot

templates/analytics/stats.html

@@ -26,7 +26,7 @@
                 <ul>
                     <li>{{ _("Number of users") }}: <span id="id_total_users"></span></li>
                     <li>{{ _("Users active during the last 15 days") }}: <span id="id_active_fifteen_day_users"></span></li>
-
+                    <li>{{ _("Total number of messages") }}: <span id="id_total_messages_sent"></span></li>
                 </ul>
             </div>
             <div class="flex-container">