Module:Jcon/documentation

require('strict')

local p = {}
local data = mw.loadData('Module:Jcon/data')

-- Generates a list of supported regions
function p.supported(frame)
	local reverseAliases = {}
	local entries = {}
	local pre = 'Note: All inputs are converted to lowercase by the template and "Region of", "County Road", etc. are striped from the input.'
	local post = 'Table produced by [[Module:Jcon/documentation]] with data from [[Module:Jcon/data]] ('
		.. frame:expandTemplate{ title = 'edit', args = { 'Module:Jcon/data' } } .. ').'
	local tableEl = mw.html.create('table'):addClass('wikitable') -- Create output table element
	
	local headerRow = tableEl:tag('tr')
	headerRow:tag('th'):wikitext('Name')
	headerRow:tag('th'):wikitext('Aliases')
	headerRow:tag('th'):wikitext('Prefix')

	for alias, name in pairs(data.aliases) do -- Reverse the alias table to allow lookup by name
		if not reverseAliases[name] then
			reverseAliases[name] = {}
		end
		
		table.insert(reverseAliases[name], alias)
	end

	for name, info in pairs(data.types) do -- Create tables for each region
		local aliases = ''
		
		if reverseAliases[name] then
			for _, alias in ipairs(reverseAliases[name]) do
				aliases = aliases .. '\n* ' .. alias -- Add alias to list item
			end
		end
		
		local row = tableEl:tag('tr')
		row:tag('td'):wikitext(name)
		row:tag('td'):wikitext(aliases)
		row:tag('td'):wikitext(info.prefix .. ' ' .. info.type)
	end
		
	for sign, fileName in pairs(data.signs) do
		local aliases = ''
		
		if reverseAliases[sign] then
			for _, alias in ipairs(reverseAliases[sign]) do
				aliases = aliases .. '\n* ' .. alias -- Add alias to list item
			end
		end
		
		local row = tableEl:tag('tr')
		row:tag('td'):wikitext(sign)
		row:tag('td'):wikitext(aliases)
		row:tag('td'):wikitext('[[File:' .. fileName .. '|20px]]')
	end

	return pre .. tostring(tableEl) .. post
end

return p