Add support for sending a reaction

A reaction can be added to the last message in the channel by writing

    +:reaction:

Where reaction is the name of the reaction. This is the same syntax that
Slacks web interface uses.

Additionally, it supports sending a reaction to an earlier message by
prefixing the text with a number. The number is the number of the
message to add a reaction to, counting from the bottom. E.g. 1 is the
last message (same as without a number), 2 is the one before etc.

This fixes #155.

1 files changed, 11 insertions, 1 deletions

diff --git a/wee_slack.py b/wee_slack.py
index e3df8af..c43f55d 100644
--- a/wee_slack.py
+++ b/wee_slack.py
@@ -324,10 +324,14 @@ class SlackServer(object):
             #w.prnt("", "%s\t%s" % (user, message))
 
 def buffer_input_cb(b, buffer, data):
-    if not data.startswith('s/') or data.startswith('+'):
+    reaction = re.match("(\d*)\+:(.*):", data)
+    if not reaction and not data.startswith('s/'):
         channel = channels.find(buffer)
         channel.send_message(data)
         #channel.buffer_prnt(channel.server.nick, data)
+    elif reaction:
+        channel = channels.find(buffer)
+        channel.send_reaction(int(reaction.group(1) or 1), reaction.group(2))
     elif data.count('/') == 3:
         old, new = data.split('/')[1:3]
         channel = channels.find(buffer)
@@ -694,6 +698,12 @@ class Channel(object):
             self.change_message(ts)
             return True
 
+    def send_reaction(self, msg_number, reaction):
+        if 0 < msg_number < len(self.messages):
+            timestamp = self.messages[-msg_number].message_json["ts"]
+            data = {"channel": self.identifier, "timestamp": timestamp, "name": reaction}
+            async_slack_api_request(self.server.domain, self.server.token, 'reactions.add', data)
+
     def change_previous_message(self, old, new):
         message = self.my_last_message()
         if new == "" and old == "":