Initial code commit

README.md

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+### Note ###
+The WebExtension, which can be found under "add-on", connects to the native application and downloads the video using youtube-dl
+
+The native application, which can be found under "app", listens for messages from the WebExtension. When it receives a message, the native application runs youtube-dl in the Downloads folder for the passed url from the WebExtension.
+
+*** Look in your Downloads folder to find your video. ***
+
+### Mac OS/Linux Setup ###
+To get this working do the following:
+
+1. Check that the [file permissions](https://en.wikipedia.org/wiki/File_system_permissions) for "youtube-dl-bridge.py" include the `execute` permission.
+2. Edit the "path" property of "web_video_dl.json" to point to the location of "youtube-dl-bridge.py" on your computer.
+3. copy "web_video_dl.json" to the correct location on your computer. See [App manifest location ](https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Native_manifests#Manifest_location) to find the correct location for your OS.
+4. Install the webextension and enjoy!

add-on/background.js

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+// On a click on the browser action, send the app a message.
+browser.browserAction.onClicked.addListener(() => {
+    // Create new connect to the app so we can dl multiple stuff at same time.
+    let port = browser.runtime.connectNative("web_video_dl");
+    browser.tabs.query({currentWindow: true, active: true}).then((tab) => {
+        tab = tab[0];
+        console.log("Downloding: " + tab.url);
+        port.postMessage(tab.url);
+    });
+});

add-on/manifest.json

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+{
+  "name": "Web Video Downloader",
+  "description": "Use youtube-dl to download videos from the web.",
+  "manifest_version": 2,
+  "version": "1.0",
+  "icons": { "64": "icons/video.png" },
+
+  "applications": {
+    "gecko": {
+      "id": "1itdominator@gmail.com",
+      "strict_min_version": "50.0"
+    }
+  },
+
+  "permissions": ["nativeMessaging", "activeTab"],
+  "background": { "scripts": ["background.js"] },
+  "browser_action": { "default_icon": "icons/video.png" }
+
+}

app/web_video_dl.json

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+{
+  "name": "web_video_dl",
+  "description": "Video downloader using youtube-dl",
+  "path": "/insert/your/path/here/to/youtube-dl-bridge.py",
+  "type": "stdio",
+  "allowed_extensions": [ "1itdominator@gmail.com" ]
+}

app/youtube-dl-bridge.py

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+#!/usr/bin/env python
+
+import sys
+import json
+import struct
+import subprocess
+
+# Python 2.x version (if sys.stdin.buffer is not defined)
+# Read a message from stdin and decode it.
+def getMessage():
+    rawLength = sys.stdin.read(4)
+    if len(rawLength) == 0:
+        sys.exit(0)
+    messageLength = struct.unpack('@I', rawLength)[0]
+    message = sys.stdin.read(messageLength)
+    return json.loads(message)
+
+while True:
+    receivedMessage = getMessage()
+
+    if receivedMessage:
+        command = "cd ~/Downloads && youtube-dl " + receivedMessage;
+        subprocess.Popen(command, shell=True, stdout=subprocess.PIPE)