Send email with X-Slack-Header to specify channel

This is slightly more accurate than using channel names to lookup where
to post.

Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>

slack/channels.py

@@ -30,6 +30,9 @@ class Channel:
             self.__unread  = json.get("unread_count", None)
             self.__last_ts = json.get("last_read", None)
 
+    def id(self):
+        return self.__id
+
     def is_member(self):
         return self.__member
 

slackmail.py

@@ -23,6 +23,7 @@ for channel in slack.channels.list():
     print()
 
     msg = MIMEText("\n".join(text))
+    msg["X-Slack-Channel"] = channel.id()
     msg["Subject"] = "[%s] %s" % (slack.team(), channel.name())
     msg["From"] = "SlackMail@OcarinaProject.net"
     msg["To"] = slack.user().email()

slackpost.py

@@ -13,12 +13,11 @@ if headers['from'] != "Anna Schumaker <schumaker.anna@gmail.com>":
 
 
 # Determine which channel to post to
+chan_id = headers["X-Slack-Channel"]
 channel = None
-subject = headers['subject']
-ch_name = subject.split("[%s]" % slack.team())[-1].strip()
 
 for c in slack.channels.list():
-    if c.name() == ch_name:
+    if c.id() == chan_id:
         channel = c
         break