Initial commit

README.md

+# Embed codimd pads into Discourse for libreho.st
+
+This allows you to embed libreho.st pads into discourse. Its based on https://github.com/fuerst/embed-etherpad-lite which embeds pads into posts using the Onebox mechanism.
+
+# Usage
+
+After installation just insert codimd links into your Discourse posts or comments. The Etherpad will be embedded using the famous and beloved [IFRAME](https://en.wikipedia.org/wiki/HTML_element#Frames) tag and is fully operational.
+
+# Installation
+
+Read [Install a Plugin](https://meta.discourse.org/t/install-a-plugin/19157) at meta.discourse.org.
+
+The configuration line you have to add to your container's app.yml file looks like:
+
+```
+- git clone https://lab.libreho.st/librehosters/embed-codimd.git
+```
+
+# Details
+
+The plugin uses the ["Brand new plugin interface"](https://meta.discourse.org/t/brand-new-plugin-interface/8793/88) to change URL's like `http(s)://domain.tld/pad-id` into HTML code like `<iframe src='http(s)://domain.tld/pad-id'></iframe>`.
+

plugin.rb

+# name: embed-codimd
+# about: Embed codimd pads using Onebox. Based on https://github.com/fuerst/embed-etherpad-lite
+# version: 0.1
+# author: realitygaps
+# url: https://lab.libreho.st/librehosters/embed-codimd
+
+class Onebox::Engine::CodimdOnebox
+  include Onebox::Engine
+  #we only want to match for a specific codimd domain
+  matches_regexp /pad.libreho.st/
+
+  def to_html
+    "<iframe name='embed_readwrite' src='#{@url}' style='border-width:0' frameborder='0' scrolling='no' width='100%' height=600></iframe><br><a href='#{@url}' target='_blank'>Goto this Pad</a>"
+  end
+end