Whether the emoji is valid is already being checked elsewhere, and
this duplicate regular expression makes it harder to understand what's
going on with Zulip's validation of emoji.
Adding a reaction is now a PUT request to
/messages/<message_id>/emoji_reactions/<emoji_name>
Similarly, removing a reaction is now a DELETE request to
/messages/<message_id>/emoji_reactions/<emoji_name>
This commit changes the url and updates the views and tests.
This commit also adds a test for invalid emoji when removing reaction.
This commit adds support for removing reactions via DELETE requests to
the /reactions endpoint with parameters emoji_name and message_id.
The reaction is deleted from the database and a reaction event is sent
out with 'op' set to 'remove'.
Tests are added to check:
1. Removing a reaction that does not exist fails
2. When removing a reaction, the event payload and users are correct
This commit adds the following:
1. A reaction model that consists of a user, a message and an emoji that
are unique together (a user cannot react to a particular message more
than once with the same emoji)
2. A reaction event that looks like:
{
'type': 'reaction',
'op': 'add',
'message_id': 3,
'emoji_name': 'doge',
'user': {
'user_id': 1,
'email': 'hamlet@zulip.com',
'full_name': 'King Hamlet'
}
}
3. A new API endpoint, /reactions, that accepts POST requests to add a
reaction to a message
4. A migration to add the new model to the database
5. Tests that check that
(a) Invalid requests cannot be made
(b) The reaction event body contains all the info
(c) The reaction event is sent to the appropriate users
(d) Reacting more than once fails
It is still missing important features like removing emoji and
fetching them alongside messages.