# coding: utf-8
require 'sunflower'

s = Sunflower.new 'commons'
#s.login 'Matma Rex', gets.strip
s.summary = 'fixing "null" author for cross-wiki uploads, see [[phab:T121097]]'

l = s.make_list 'whatlinkshere', 'User:Null'
puts l.length

l.each do |t|
	next unless t.start_with? 'File:'
	logs = s.API action: 'query', list: 'logevents', letype: 'upload', letitle: t
	next if logs['query']['logevents'].empty?
	if logs['query']['logevents'][0]['comment'].start_with? 'Cross-wiki upload from'
		author = logs['query']['logevents'][0]['user']
		next if !author || author.empty?
		page = s.page t
		next unless page.text.sub! '[[User:null|null]]', "[[User:#{author}|#{author}]]"
		if page.save
			puts "Fixed: #{t} -> #{author}"
		end
	end
end