* Engine Switcher
A WebExtension to switch current page between various search engines in just one click (or =Ctrl+Alt+N=), if you are too lazy to type =!b=, =!g= (especially on mobile) in DuckDuckGo.

So you can easily keep your privacy as possible as you can.

Currently supported search engines:

** Private-focused
- DuckDuckGo
- Ecosia
- Brave
- Gibiru
- MetaGer (en / de)
- You.com

** Unknown
- Yahoo OneSearch
- StartPage
- Wikipedia English (Unrecommended)

** Commercial
- Bing
- Google
- goo
- Yahoo! JAPAN
- Yahoo!
- Yandex (en / ru)

For more information please see [[https://github.com/kuanyui/EngineSwitcher][GitHub]].

* Install
- [[https://addons.mozilla.org/en-US/firefox/addon/engine-switcher/][Mozilla Add-ons]]

* Screenshot
[[https://addons.mozilla.org/user-media/previews/full/268/268699.png]]
[[https://addons.mozilla.org/user-media/previews/full/268/268700.png]]

* Supported Browser
- Firefox for Desktop >= 61
- Firefox for Android >= 61


* Requirements for Development
- Node
- [[https://github.com/mozilla/web-ext][web-ext]]
- GNU Make
- Python 3 (For HTTP server)

* Development
** Prepare
#+BEGIN_SRC sh
npm i
#+END_SRC

** Run for development (Watch)
#+BEGIN_SRC sh
make watch
web-ext run --verbose --firefox-profile ~/.mozilla/firefox/PROFILE_DIR_NAME
#+END_SRC
#+BEGIN_QUOTE
If webpack watch exit immediately without any error, please try [[https://github.com/guard/listen/wiki/Increasing-the-amount-of-inotify-watchers]]
#+END_QUOTE

** Run Firefox for developing WebExtension
#+BEGIN_SRC sh
web-ext run --verbose --firefox-profile ~/.mozilla/firefox/XXXXXXX.NAME
#+END_SRC

** Deploy (Build .xpi file & run a HTTP server for download)
#+BEGIN_SRC sh
make xpi-server
#+END_SRC

** Zip this repository for uploading to addons.mozilla.org
#+BEGIN_SRC sh
make zip-repo
#+END_SRC

* Permission
For paranoid users such as me, these are all used permissions with its usages:
- =tabs=:
  - Watch the URL changing of all tabs, for checking if URL is supported stie, and decide if show / hide =pageAction= button. (=browser.tabs.onUpdated=).
  - Get the URL of current page (=Tab.url= in =pageAction.onClicked=)
  - Redirect to new URL (=tabs.update({url: string})=)
  #+BEGIN_QUOTE
    [[https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/Differences_between_desktop_and_Android#Effect_on_your_add-on_UI][Firefox for Android requires developer call =browser.pageAction.show()= explicitly]] and it's impossible to use =pageAction= with only =manifest.page_action.show_matches= to implement this extension.
  #+END_QUOTE

- =storage=:
  - For saving user preferences in your Mozilla account (=storage.sync=)

- =startpage.com=
  - =startpage.com= protect privacy in a extremely paranoid way: it's impossible to get query string from URL. Therefore, I have to inserting =content.js= to get query string from =<input>=.

* Acknowedgement
- Main icon is from Breeze of KDE Project

* TODOs
- Customizable keyboard shortcuts.
- More search engines.
- Buttons for Fenix
* License
WTFPL 2.0