Module:Sandbox/Redlead07

--Redlead07 Google Code-in, Introduction to Lua in Wikipedia
--Redlead07 Google Code-in, Working with modules
local p = {} -- p stands for package

function p.hello( frame )
    return "Hello, world!"
end

p.Hi = function(frame)
	strName = frame.args.name or "Jimbo"
	return "Hello from Lua to my friend " .. strName .. ".<br>"
end

p.temperature = function(frame)
	a = tonumber(frame.args.celsius) or 0
	fah = a*9/5+32
	msg = a.." degree Celsius is "..fah.." degree Fahrenheit."
	if a>9 then msg = msg.." It is warm." else msg = msg.." It is cold." end
	return msg  
end

-- Task 4
p.times = function(frame)
	local num = tonumber( frame.args.num ) or 2
	local out = num.." Times table<br>"
	for i = 1, 12 do
		out = out..num.." times "..i.." equals "..i*num..".<br>"
	end
	return out
end

p.mum = function(frame)
	local family = {"Dad", "Mum", "Uncle Stan", "Aunty Elsie", "Brian", "Charlie", "Michael", "Sarah"}
	local msg = ""
	for a = 1, #family do
	msg = msg .. "Hello " .. family[a] .. "<br>"
	end
	return msg
end

p.sentence = function(frame)
	local str = frame.args.words or ""
	local str = str:gsub("^%l", string.upper)
	local out = string.sub(str, 2)
	local out = str
	return out
end

p.unpackdate = function(frame)
	local dmydate = frame.args.dmydate or ""
	local day, month, year = string.match(dmydate, "(%d+) (%w+) (%d+)")
	return "Year = " .. year .. "<br>Day = " .. day .. "<br>Month = " .. month
end

p.langnames = function(frame)
	local langlist = mw.language.fetchLanguageNames()
	local langs = ""
	local count = 0
	for k, v in pairs(langlist) do
		langs = langs .. k .. " - " .. v .. "<br>"
		count = count + 1
	end
	return langs .. "<br>= " .. count .. " languages".."<br> "
end

p.fallbacks = function(frame)
	local langcode = frame.args.langcode
	local langlist = mw.language.getFallbacksFor(langcode)
	local langs = ""
	local count = 0
	for k = 1, #langlist do
		langs = langs .. langlist[k] .. "<br>"
	end
	return langcode.." =".."<br>".. langs.."<br>"
end

p.pagename = function( frame )
	local ttl = frame.args.title
	local ttlobj = mw.title.new( ttl )
	local txt = ttlobj.text
	return txt.."<br>"
end

p.pageinfo = function( frame )
	local title = frame.args.ttl or ""
	local ttlobj = mw.title.new( title )
	if ttlobj == nil then return "The title is invalid.".."<br>" end
	local txt = ttlobj.text
	if ttlobj.exists then
		txt = txt.." exists"
	else
		txt = txt.." does not exists"
	end
	if ttlobj.isRedirect then
		return txt.." and is a redirect.".."<br>"
	else
		return txt.." and is not a redirect.".."<br>"
	end
end

return p