Using tldr bot on a separate server

- Sending the PR id and message as a POST request.
- The bot running on a separate server receives the message and posts
the comment on the PR.

.travis.yml

@@ -10,6 +10,9 @@ cache: false
 after_success:
 - bash scripts/build.sh
 
+after_failure:
+- cat test_result | python scripts/send_to_bot.py
+
 env:
   global:
   - secure: ewQMcFd3wH8IHOeGhIkBr2kAgadONmesv2KB+9bPRCZ5gvtFFwlkCMdPnQBR9Kd3GKC8r+EO0JNNFWOvrDjPYhEHi9Ab26Q/qodwfwne9YloKXT+C48Zrbrj8q7kb/FeMYPev+RMuM96j5E5QyqBVohGP7hC2bpU3mvAhQ2wBCE=

package.json

@@ -12,7 +12,7 @@
     "precommit": "npm test",
     "lint-markdown": "markdownlint pages/**/*.md",
     "lint-tldr": "tldr-lint ./pages",
-    "test": "markdownlint pages/ && tldr-lint ./pages",
+    "test": "bash -c 'markdownlint pages/ && tldr-lint ./pages 2>&1 | tee test_result; test ${PIPESTATUS[0]} -eq 0'",
     "build-index": "node ./scripts/build-index.js > pages/index.json"
   },
   "repository": "tldr-pages/tldr",

scripts/send_to_bot.py

@@ -0,0 +1,38 @@
+import json
+import os
+import sys
+import urllib2
+
+URL = 'https://tldr-bot.starbeamrainbowlabs.com/'
+
+def post_comment(pr_id, comment_body):
+  # Constructing the url
+  req = urllib2.Request(URL,
+                       json.dumps({'body': comment_body, 'pr_id': pr_id }),
+                       {'Content-Type': 'application/json'})
+  # Making the request
+  f = urllib2.urlopen(req)
+  if f.getcode() != 200:
+    print f.read()
+
+
+# Get the environment variables
+PR_NUMBER = os.environ.get('TRAVIS_PULL_REQUEST')
+BUILD_ID = os.environ.get('TRAVIS_BUILD_ID')
+
+# Read the test result output from stdin
+test_result = sys.stdin.read().strip()
+# Populate the template text
+comment = (
+"The [build]"
+"(https://travis-ci.org/tldr-pages/tldr/builds/{build_id})"
+" for this PR has failed with the following message:"
+"\n```\n"
+"{comment_body}"
+"\n```\n"
+"Please fix the error(s) and push again."
+).format(build_id=BUILD_ID, comment_body=test_result)
+
+# If its a PR, post a comment on it
+if PR_NUMBER != "false":
+  post_comment(PR_NUMBER, comment)