Use node email sig strip

Python deps are too complicated
Refs #826

.circleci/config.yml

@@ -38,6 +38,9 @@ jobs:
     # In many cases you can simplify this from what is generated here.
     # 'See docs on artifact collection here https://circleci.com/docs/2.0/artifacts/'
     - run: mkdir -p $CIRCLE_ARTIFACTS $CIRCLE_TEST_REPORTS
+    - run: curl -sL https://deb.nodesource.com/setup_6.x | sudo -E bash -
+    - run: sudo apt-get install -y nodejs
+    - run: sudo npm install -g [email protected]
     # Dependencies
     #   This would typically go in either a build or a build-and-test job when using workflows
     # Restore the dependency cache

app/models/message_thread.rb

@@ -213,8 +213,8 @@ def add_messages_from_email!(mail, in_reply_to)
 
     text = if mail.message.html_part
              # For multipart messages we pull out the html part content and use python to remove the signature
-             body = %x(./lib/sig_strip.py #{Shellwords.escape(mail.message.html_part.decoded)})
-             body.gsub(%r{(</?html>|</?body>|</?head>)},"")
+             body = %x(./lib/sig_strip.js #{Shellwords.escape(mail.message.html_part.decoded)})
+             body.gsub(%r{(</?html>|</?body>|</?head>|\r)},"")
            else
              # When there is no HTML we get the text part or just the message and use EmailReplyParser to remove the signature
              body = (mail.message.text_part || mail.message).decoded

lib/sig_strip.js

@@ -0,0 +1,6 @@
+#!/usr/bin/env node
+
+const planer = require('planer')
+const jsdom = require('jsdom')
+const dom = new jsdom.JSDOM().window.document
+console.log(planer.extractFrom(process.argv[2], 'text/html', dom))