Module:Error

This module provides functions which templates can invoke when they receive invalid input.

---

local utilsError = require("Module:UtilsError")

local p = {}

local DEFAULT_ERROR_MESSAGE = "Error"
local CATEGORY_ERRORS = "Category:Pages with template errors"

function p.Error(frame)
	local args = frame.args
	return p.printError(args[1], args[2])
end

function p.Warn(frame)
	local args = frame.args
	return p.warn(args[1], args[2])
end

-- Should maybe be moved to Module:UtilsError
function p.printError(message, category)
	local errorMessage = message and ("Error: " .. message) or DEFAULT_ERROR_MESSAGE
	local errorCategory = category or CATEGORY_ERRORS
	utilsError.warn(message or DEFAULT_ERROR_MESSAGE)
	local err = mw.html.create("strong")
		:addClass("error")
		:wikitext(errorMessage)
	return string.format("[[:%s|%s]][[%s]]", errorCategory, tostring(err), errorCategory)
end

function p.warn(message, category)
	utilsError.warn(message or "")
	return string.format("[[%s]]", category or CATEGORY_ERRORS)
end

return p