web: Move web app to ‘web’ directory.

Ever since we started bundling the app with webpack, there’s been less
and less overlap between our ‘static’ directory (files belonging to
the frontend app) and Django’s interpretation of the ‘static’
directory (files served directly to the web).

Split the app out to its own ‘web’ directory outside of ‘static’, and
remove all the custom collectstatic --ignore rules.  This makes it
much clearer what’s actually being served to the web, and what’s being
bundled by webpack.  It also shrinks the release tarball by 3%.

Signed-off-by: Anders Kaseorg <anders@zulip.com>

web/src/message_helper.js

@@ -0,0 +1,83 @@
+import * as alert_words from "./alert_words";
+import * as message_store from "./message_store";
+import * as message_user_ids from "./message_user_ids";
+import * as people from "./people";
+import * as pm_conversations from "./pm_conversations";
+import * as recent_senders from "./recent_senders";
+import * as stream_topic_history from "./stream_topic_history";
+import * as user_status from "./user_status";
+import * as util from "./util";
+
+export function process_new_message(message) {
+    // Call this function when processing a new message.  After
+    // a message is processed and inserted into the message store
+    // cache, most modules use message_store.get to look at
+    // messages.
+    const cached_msg = message_store.get_cached_message(message.id);
+    if (cached_msg !== undefined) {
+        // Copy the match topic and content over if they exist on
+        // the new message
+        if (util.get_match_topic(message) !== undefined) {
+            util.set_match_data(cached_msg, message);
+        }
+        return cached_msg;
+    }
+
+    message_store.set_message_booleans(message);
+    message.sent_by_me = people.is_current_user(message.sender_email);
+
+    people.extract_people_from_message(message);
+    people.maybe_incr_recipient_count(message);
+
+    const sender = people.get_by_user_id(message.sender_id);
+    if (sender) {
+        message.sender_full_name = sender.full_name;
+        message.sender_email = sender.email;
+        message.status_emoji_info = user_status.get_status_emoji(message.sender_id);
+    }
+
+    // Convert topic even for PMs, as legacy code
+    // wants the empty field.
+    util.convert_message_topic(message);
+
+    switch (message.type) {
+        case "stream":
+            message.is_stream = true;
+            message.stream = message.display_recipient;
+            message.reply_to = message.sender_email;
+
+            stream_topic_history.add_message({
+                stream_id: message.stream_id,
+                topic_name: message.topic,
+                message_id: message.id,
+            });
+
+            recent_senders.process_stream_message(message);
+            message_user_ids.add_user_id(message.sender_id);
+            break;
+
+        case "private":
+            message.is_private = true;
+            message.reply_to = util.normalize_recipients(message_store.get_pm_emails(message));
+            message.display_reply_to = message_store.get_pm_full_names(message);
+            message.pm_with_url = people.pm_with_url(message);
+            message.to_user_ids = people.pm_reply_user_string(message);
+
+            pm_conversations.process_message(message);
+
+            recent_senders.process_private_message(message);
+            if (people.is_my_user_id(message.sender_id)) {
+                for (const recip of message.display_recipient) {
+                    message_user_ids.add_user_id(recip.id);
+                }
+            }
+            break;
+    }
+
+    alert_words.process_message(message);
+    if (!message.reactions) {
+        message.reactions = [];
+    }
+    message_store.update_message_cache(message);
+    return message;
+}