Module:Backlog table

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Implements {{backlog table}}.

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--[=[
Implements [[Template:Backlog table]]
]=]
require('strict')

local p = {} --p stands for package

local getArgs = require('Module:Arguments').getArgs

local function backlog_status(cat)
	if not cat then
		return nil
	end
	
	local count = mw.site.stats.pagesInCategory(cat, 'all')
	local frame = mw.getCurrentFrame()
	if count < 20 then
		return frame:expandTemplate {
			['title'] = 'done',
			['args'] = {}
		}
	elseif count < 50 then
		return frame:expandTemplate {
			['title'] = 'doing',
			['args'] = {'No backlog'}
		}
	else
		return frame:expandTemplate {
			['title'] = 'not done'
		}
	end
end

local function backlog_button(cat)
	return '<span class="submit ui-button ui-widget ui-state-default ui-corner-all ui-button-text-only" role="button" aria-disabled="false"><span class="ui-button-text">[[:Category:' .. cat .. '|' .. cat .. ']]</span></span>'
end

local function backlog_tr(cat)
	if not cat then
		return nil
	end
	
	local link = backlog_button(cat)
	local status = backlog_status(cat)
	
	return '<tr><td>' .. link .. '</td><td>' .. status .. '</td></tr>'
end

function p._backlog_table(args)
	local table_open = '<table class="wikitable" style="float:right;">'
	
	local frame = mw.getCurrentFrame()
	local purge = frame:expandTemplate {
		['title'] = 'purge',
		['args'] = {}
	}
	local caption = '<caption>Backlog status (' .. purge .. ')'..'</caption>'
	
	local header_row = '<tr><th>Category</th><th>Current status</th></tr>'
	
	local row_table = {}
	for k, v in pairs(args) do
		row_table[k] = backlog_tr(v)
	end
	local rows = table.concat(row_table)
	
	return table_open .. caption .. header_row .. rows .. '</table>'
end

function p.backlog_table(frame)
	return p._backlog_table(getArgs(frame))
end

return p