Redirect old browsing urls

Old url

Main url: https://f-droid.org/repository/browse plus some parameters

Parameters:

• page_id
• Wordpress parameter for the browsing page
• It's not always defined; if yes, it's value is 0
• can be ignored when redirecting
• fdcategory:
• list of all apps with this category
• value is one of these escaped category names: All+categories, Writing, Navigation, Graphics, Phone+%26+SMS, Science+%26+Education, Time, Reading, Internet, Theming, Sports+%26+Health, Money, Security, Development, Connectivity, Multimedia, None, Games, System
• if not defined, defaults to `All+categories
• Warning: This parameter is often defined twice; the last one is used
• fdpage
• the current pagination number (starting from 1) in app list
• if not defined, defaults to 1
• fdfilter
• search for this parameter's value
• fdid
• the applications' package name on app detail page
• if fdid is defined, the other parameters are ignored -> if defined app detail, if not defined app list

Please correct me if I'm wrong.

Redirecting possibilities

1. PHP: Just access the $_REQUEST parameters and process them. Problem: PHP might make building and deploying more difficult
2. JS: Access the current url with window.location. Problem: JS could be disabled on the client; also I'd prefer using JS for some nice-to-have extra features only.