From eead3717c616e424f90de21243e86fbf59996c2e Mon Sep 17 00:00:00 2001
From: Eryn Wells <eryn@erynwells.me>
Date: Mon, 26 Sep 2016 00:07:22 -0400
Subject: [PATCH] Add a host property to the SlackService

---
 rtmbot.py  |  6 +++++-
 service.py | 16 +++++++++++++++-
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/rtmbot.py b/rtmbot.py
index 163d39b..4e68f70 100755
--- a/rtmbot.py
+++ b/rtmbot.py
@@ -24,7 +24,11 @@ args = parse_args()
 config = None
 with open(args.config or 'rtmbot.conf', 'r') as f:
     config = yaml.load(f)
-service.slack = service.SlackService(config.get('SLACK_TOKEN'))
+
+token = config.get('SLACK_TOKEN')
+host = config.get('HOST')
+service.slack = service.SlackService(token, host)
+
 bot = client.init(config)
 try:
     bot.start()
diff --git a/service.py b/service.py
index b96629e..cc7548b 100644
--- a/service.py
+++ b/service.py
@@ -10,8 +10,22 @@ class SlackService(object):
 
     _API_BASE = 'https://slack.com/api'
 
-    def __init__(self, token):
+    def __init__(self, token, host):
         self.token = token
+        self.host = host
+
+    def permalink(self, channel, message):
+        '''
+        Generate a permalink to the given message object in the given channel.
+        Channel should be the name of the channel, without the leading '#'.
+        `message` should have a `ts` field.
+        '''
+        try:
+            ts = message['ts']
+        except KeyError:
+            return
+        ts = ts.replace('.', '')
+        return 'https://{}/archives/{}/p{}'.format(self.host, channel, ts)
 
     #
     # Endpoints