frontend: Add basic user_status module.

So far this processes page_params, but it's otherwise
an unused internal API.

.eslintrc.json

@@ -197,6 +197,7 @@
         "user_groups": false,
         "user_pill": false,
         "user_search": false,
+        "user_status": false,
         "util": false,
         "poll_widget": false,
         "widgetize": false,

frontend_tests/node_tests/user_status.js

@@ -0,0 +1,39 @@
+set_global('channel', {});
+set_global('page_params', {});
+zrequire('user_status');
+
+function initialize() {
+    page_params.away_user_ids = [1, 2, 3];
+    user_status.initialize();
+}
+
+run_test('basics', () => {
+    initialize();
+    assert(user_status.is_away(2));
+    assert(!user_status.is_away(99));
+
+    assert(!user_status.is_away(4));
+    user_status.set_away(4);
+    assert(user_status.is_away(4));
+    user_status.revoke_away(4);
+    assert(!user_status.is_away(4));
+});
+
+run_test('server', () => {
+    initialize();
+
+    var away_arg;
+
+    channel.post = (opts) => {
+        away_arg = opts.data.away;
+        assert.equal(opts.url, '/json/users/me/status');
+    };
+
+    assert.equal(away_arg, undefined);
+
+    user_status.server_set_away();
+    assert.equal(away_arg, true);
+
+    user_status.server_revoke_away();
+    assert.equal(away_arg, false);
+});

static/js/bundles/app.js

@@ -152,6 +152,7 @@ import "js/server_events_dispatch.js";
 import "js/zulip.js";
 import "js/presence.js";
 import "js/user_search.js";
+import "js/user_status.js";
 import "js/buddy_data.js";
 import "js/padded_widget.js";
 import "js/buddy_list.js";

static/js/ui_init.js

@@ -297,6 +297,7 @@ $(function () {
     }
     server_events.initialize();
     people.initialize();
+    user_status.initialize();
     compose_pm_pill.initialize();
     search_pill_widget.initialize();
     reload.initialize();

static/js/user_status.js

@@ -0,0 +1,49 @@
+var user_status = (function () {
+
+var exports = {};
+
+var away_user_ids = new Dict();
+
+exports.server_set_away = function () {
+    channel.post({
+        url: '/json/users/me/status',
+        data: {away: true},
+        idempotent: true,
+    });
+};
+
+exports.server_revoke_away = function () {
+    channel.post({
+        url: '/json/users/me/status',
+        data: {away: false},
+        idempotent: true,
+    });
+};
+
+exports.set_away = function (user_id) {
+    away_user_ids.set(user_id, true);
+};
+
+exports.revoke_away = function (user_id) {
+    away_user_ids.del(user_id);
+};
+
+exports.is_away = function (user_id) {
+    return away_user_ids.has(user_id);
+};
+
+exports.initialize = function () {
+    _.each(page_params.away_user_ids, function (user_id) {
+        away_user_ids.set(user_id, true);
+    });
+
+    delete page_params.away_user_ids;
+};
+
+return exports;
+
+}());
+if (typeof module !== 'undefined') {
+    module.exports = user_status;
+}
+window.user_status = user_status;

tools/test-js-with-node

@@ -83,6 +83,7 @@ enforce_fully_covered = {
     'static/js/user_groups.js',
     'static/js/user_pill.js',
     'static/js/user_search.js',
+    'static/js/user_status.js',
     'static/js/util.js',
     'static/js/widgetize.js',
     'static/js/poll_widget.js',