Add activity.short_huddle_name().

(imported from commit e3f0389298631fd06169dbc9559691470ac19d00)

static/js/activity.js

@@ -74,6 +74,24 @@ exports.full_huddle_name = function (huddle) {
     return names.join(', ');
 };
 
+exports.short_huddle_name = function (huddle) {
+    var emails = huddle.split(',');
+
+    var names = _.map(emails.slice(0,2), function (email) {
+        var person = people_dict.get(email);
+        return person ? person.full_name : email;
+    });
+    var others = emails.length - 2;
+
+    if (others === 1) {
+        names.push("+ 1 other");
+    } else if (others >= 2) {
+        names.push("+ " + others + " others");
+    }
+
+    return names.join(', ');
+};
+
 exports.huddle_fraction_present = function (huddle, presence_info) {
     var emails = huddle.split(',');
 

zerver/tests/frontend/node/activity.js

@@ -29,6 +29,9 @@ set_global('people_dict', new global.Dict.from({
     },
     'jill@zulip.com': {
         full_name: 'Jill Hill'
+    },
+    'mark@zulip.com': {
+        full_name: 'Marky Mark'
     }
 }));
 
@@ -104,6 +107,28 @@ var activity = require('js/activity.js');
     );
 }());
 
+(function test_short_huddle_name() {
+    assert.equal(
+        activity.short_huddle_name('alice@zulip.com'),
+        'Alice Smith'
+    );
+
+    assert.equal(
+        activity.short_huddle_name('alice@zulip.com,jill@zulip.com'),
+        'Alice Smith, Jill Hill'
+    );
+
+    assert.equal(
+        activity.short_huddle_name('alice@zulip.com,fred@zulip.com,jill@zulip.com'),
+        'Alice Smith, Fred Flintstone, + 1 other'
+    );
+
+    assert.equal(
+        activity.short_huddle_name('alice@zulip.com,fred@zulip.com,jill@zulip.com,mark@zulip.com'),
+        'Alice Smith, Fred Flintstone, + 2 others'
+    );
+}());
+
 (function test_huddle_fraction_present() {
     var huddle = 'alice@zulip.com,fred@zulip.com,jill@zulip.com,mark@zulip.com';