Module:VersionMessageBox

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

-------------------------------------------------------------------------------
-- This module renders the {{Version}} template.
-- https://hoodedhorse.com/wiki/Against_the_Storm/Template:Version
--
-- This template #invokes VersionMessageBox.checkVersion(frame), below.
--
-- The template requires one argument provided by wiki page writers using the 
-- template, which is the version of the game when the wiki page was last 
-- updated. There is a second argument provided by the template itself that the
-- page writers canont overwrite, which always refers to the current version of
-- the game. The current version is identified by the wiki as 
-- {{CurrentVersion}}.
--
-- Depending on the arguments, this module creates a message box that displays
-- when a reader opens a page that hasn't been reviewed and updated since the
-- version changed. The message box tells the reader what version of the game
-- the page was udpated with, the current version, and an encouraging note to
-- help keep the wiki up to date.
-- @module VersionMessageBox
local VersionMessageBox = {}

--
-- Constants
--
-- specialization names
local CSS_VERSION_MESSAGE_BOX = "float:left; max-width: 400px; margin: auto; padding: 15px; border: 1px solid #366fe0; border-radius: 12px; background: #c9dcff"
local CSS_CLASS_VERSION_MESSAGE_BOX = "ATS-version-message-box"
local CSS_COLOR_VERSION_BACKGROUND = "#c9dcff"
local CSS_COLOR_VERSION_BORDER = "#366fe0"
local MESSAGE_BOX_ICON = "Hourglass_Icon_.png"



--
-- Main rendering function
--

-------------------------------------------------------------------------------
-- Checks whether a message box is necessary.
--
-- If the page is outdated, calls the method to draw the message box and adds 
-- the right category to the page.
-- @param frame a table describing the MediaWiki frame; frame['args'] is a 
-- table containg the template arguments; frame['args']['updated'] is the first
-- argument; frame['args']['currentVersion'] is the second argument.
-- @return a string containing the wiki markup for a message box, or an empty
-- string if the page is updated
function VersionMessageBox.checkVersion(frame)
	
	-- extract the arguments we care about from the frame
	local argLastUpdated = frame.args.updated
	local argCurrentVersion = frame.args.currentVersion
	
	-- validate that there are version values to use
	if not argLastUpdated or "" == argLastUpdated then
		return "Version error: please provide the game version with which you updated this page"
	end
	if not argCurrentVersion or "" == argCurrentVersion then
		return "Version error: template did not identify current version correctly"
	end
	
	-- let's try it for a while just checking whether they are different. In the
	-- future, we may need to add actual numerical-comparison checks.
	if argLastUpdated == argCurrentVersion then
		-- the page is up to date, nothing else needed
		return ""
	else
		-- render the message box
		local html = VersionMessageBox.renderMessageBox(argLastUpdated, argCurrentVersion)
		-- add the category at the bottom.
		--[[ mw:addCategory("Pages needing version review") this doesn't work --]]
		
		return tostring(html)
	end
end



---
-- Renders the message box.
--
-- Renders a div with the appropriate CSS class for correct display. The div
-- contains the message about the version of the page and the current version of
-- the game. And it includes a statement encouraging people to keep the wiki up
-- to date.
-- @param argLastUpdated the version of the game when the page was updated
-- @param argCurrentVersion the current version of the game
-- @return the HTML markup for a message box
function VersionMessageBox.renderMessageBox(argLastUpdated, argCurrentVersion)

	local div = mw.html.create('div')
	
	div:addClass(CSS_CLASS_VERSION_MESSAGE_BOX)
	div:cssText(CSS_VERSION_MESSAGE_BOX)
	
	messageText = "This article was last updated during version '''" .. argLastUpdated .. "'''.<br />" ..
		"The game is now in version '''" .. argCurrentVersion .. "'''.<br />" ..
		"Some information may be out of date.<br />" ..
		"Help us keep the wiki up to date by comparing this article against the patch notes and updating this page."
	
	div:wikitext("[[File:" .. MESSAGE_BOX_ICON .. "|left|x48px|link=|Out of date]] ")
		:tag('div'):cssText("margin-left: 60px")
		:wikitext(messageText)
	
	return div
end

-- return when required into another module
return VersionMessageBox