Merge remote-tracking branch 'origin/develop' into websocket-fixes

* origin/develop: (119 commits)
  Apply 1 suggestion(s) to 1 file(s)
  Make it possible to localize user highlight options
  remove shoutbox test hacks
  fix shoutbox header, use custom scroll-to-bottom system, remove vue-chat-scroll, temporarily add chat test hack
  update changelog with 2.3.0
  change icons around
  Translated using Weblate (Japanese)
  Update timeline_quick_settings.js
  add screen_name_ui to tests
  separate screen_name and screen_name_ui with decoded punycode
  Update CHANGELOG.md
  add basic validation for statusless status notifications
  changelog mention
  fix chat unread badge
  update shelljs to get rid of warnings on build
  save a few characters
  focus input in emoji picker and react picker
  fix vue warnings
  add only to wording
  basic loggedin check for reply filtering
  ...

1 files changed, 17 insertions, 0 deletions

diff --git a/src/services/chat_service/chat_service.js b/src/services/chat_service/chat_service.js
index e653ebc1..92ff689d 100644
--- a/src/services/chat_service/chat_service.js
+++ b/src/services/chat_service/chat_service.js
@@ -48,6 +48,22 @@ const deleteMessage = (storage, messageId) => {
   }
 }
 
+const cullOlderMessages = (storage) => {
+  const maxIndex = storage.messages.length
+  const minIndex = maxIndex - 50
+  if (maxIndex <= 50) return
+
+  storage.messages = _.sortBy(storage.messages, ['id'])
+  storage.minId = storage.messages[minIndex].id
+  for (const message of storage.messages) {
+    if (message.id < storage.minId) {
+      delete storage.idIndex[message.id]
+      delete storage.idempotencyKeyIndex[message.idempotency_key]
+    }
+  }
+  storage.messages = storage.messages.slice(minIndex, maxIndex)
+}
+
 const handleMessageError = (storage, fakeId, isRetry) => {
   if (!storage) { return }
   const fakeMessage = storage.idIndex[fakeId]
@@ -201,6 +217,7 @@ const ChatService = {
   empty,
   getView,
   deleteMessage,
+  cullOlderMessages,
   resetNewMessageCount,
   clear,
   handleMessageError