Module:Util

Documentation for this module may be created at Module:Util/doc

local p = {}
local cargo = mw.ext.cargo

p.getMaterial = function(itemName)
	local tables = 'Materials'
	local queryFields = '_pageName=page,Name,Type'
	local queryArgs = {
		where = 'Name="' .. itemName .. '"',
		limit = 1
	}
		
	local query = cargo.query(tables, queryFields, queryArgs)
	return query[1]
end

function p.fetchPath(frame, image, thumb)
	local search_title
	if frame.args.image ~= nil then
		search_title = mw.text.decode(frame.args.image, true)
	else
		search_title = image
	end
	local thumb_size
	if frame.args.size ~= nil then
		thumb_size = frame.args.size
	else
		thumb_size = thumb
	end
	if (thumb_size ~= nil) and (string.match(thumb_size, '^%d+px$') == nil) then
		error('thumb_size value not valid', 1)
	end
		

	local title = p.fetchFinalTitle(mw.title.makeTitle('Image', search_title))
	if title == nil then
		return ''
	end
	
	--mw.log(title)
	local filename = title:partialUrl()
	--mw.log(filename)
	local hash_path = p.calcHashPath(filename)
	--mw.log(md5)
	if thumb ~= nil then
		local encoded_filename = mw.uri.encode(filename, 'WIKI')
		return '/images/thumb/' .. hash_path .. '/' .. encoded_filename .. '/' .. thumb_size .. '-' .. encoded_filename;
	else
		return '/images/' .. hash_path .. '/' .. mw.uri.encode(filename, 'WIKI');
	end
end

function p.fetchURL(frame, image, thumb)
	return 'https://anothereden.wiki' .. p.fetchPath(frame, image, thumb)
end

function p.calcHashPath(filename)
	local md5 = mw.hash.hashValue('md5', filename)
	return string.sub(md5, 1, 1) .. '/' .. string.sub(md5, 1, 2)
end

function p.fetchFinalTitle(title)
	if title == nil then
		return nil
	elseif title.redirectTarget == false then
		return title
	else
		return p.fetchFinalTitle(title.redirectTarget)
	end
end

return p