Before this commit, a new unread message could contribute to unread
counter of conversation twice.
Steps to reproduce:
1. Log in as Demo and start a conversation with Mitchell Admin
2. Log in as Admin: if this is the first message in the conversation,
counter is correct and shows (1)
3. Log out as Admin
4. Send another message to Admin
5. Log in as Admin and notice that the counter is doubled
6. If the conversation was still open, counter is correct!
This happens because some notification are pending dispatch before
fetching messaging state initially. The counter at init_messaging
fetch takes into account the notification. However, when handling
the message notifcation, it's wrongly considered as a new
notification, thus incrementing the counter when it shouldn't.
This commit fixes the issue by fetching the last bus notification
when fetching init_messaging. Doing so allow to determine whether
a notification is newer or older than init_messaging state.
This helps deciding whether the counter should be incremented or not.
Task-3357960
closesodoo/odoo#124767
X-original-commit: 081ab772dece86f1b5a5d4b3f6227b4b311d9206
Signed-off-by: Stockbauer Matthieu (tsm) <tsm@odoo.com>
Alexandre Kühn
8f38b5130c