User:LinkFA-Bot

About the Bot
The LinkFA - Bot has been written in PHP and tries to keep the usage of and  current.

If it's working, it has the following phases:
 * Init phase
 * Gather all articles that use a 'Link FA' template in those wikipedia-versions the bot should edit in one table. Check all featured - templates and categories from foreign wikipedias and gather the articles that are thus marked as featured in another table.


 * Check
 * For each article that holds a 'Link FA' template, check whether all Interwiki - linked articles are marked as "featured" (by checking whether they are in the table of featured articles) and set / remove the respective template (all in one go per article).


 * Search
 * For each featured article we gathered during init, try and check whether the remote article links to an article in one of the languages we work on. If so, and said article is not yet 'done' in the 'Check' step, that must be an unmarked and up to now unchecked article locally, so call a 'check'' on that article.

A more detailed description of the bot work can be found here

Requirements for the bot to work properly

 * The excellency -templates and -categories of foreign wikis must be listed as links either in Templates or Categories, or the bot won't accept foreign "featured" marks and dump the markup template.
 * The page to be updated locally must not be edit-protected with level 'sysop'.

Frequently asked questions

 * Why did the bot delete the 'Link FA' markup on Article XY?
 * There's a couple of possible answers to that:
 * The article at the other end of the interwiki link is not a featured article, but a featured portal or a featured list - those don't get marked with the 'Link FA' template, or the article isn't even "featured" but just good.
 * At the time the bot checked the list of 'featured articles' on the other wiki, that article wasn't marked (for whatever reason)
 * The bot didn't know/recognize the "Featured" template used in the remote article


 * Article XYZ is featured for a while now, why didn't the bot add the markup yet?
 * New markups (introducing to pages that don't have one) only happens when the page in question is linked from a 'featured' article on a remote wiki and already links back to that article. Building up the interwiki link net is something this bot does not participate in.

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