Module:Sandbox/Artbarte

-- Artbarte Google Code-in, Introduction to Lua in Wikipedia

-- Arbarte 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" -- Step 13
	return "Hello from Lua to my friend " .. strName .. ".<br>"
end

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

-- Arbarte Google Code-in, Loops and tables
-- 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", "Tom", "Jerry", "Amelia"}
	local msg = ""
	for i = 1, #family do 
		msg = msg .. "Hello " .. family[i] .. "<br>"
	end
	return msg
end
-- Lua Task 5 - Lua libraries
p.sentence = function(frame)
	local str = frame.args.words or ""
	local out = string.upper(string.sub(str, 1, 1)) ..  string.sub(str, 2)
	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

-- Lua Task 6 - MediaWiki libraries
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"
end

p.fallbacks = function(frame)
	local langcode = frame.args.langcode
	local fallbacklist = mw.language.getFallbacksFor( langcode )
	local fallbacklangs = "Fallback language codes for " .. langcode .. " :<br>"
	for i = 1, #fallbacklist do
		fallbacklangs = fallbacklangs .. fallbacklist[i] .. "<br>"
	end
	return fallbacklangs
end

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

p.pageinfo = function( frame )
	local ttl = frame.args.title or ""
	if ttl == "" then return "Provided title is invalid" end
	local ttlobj = mw.title.new( ttl )
	
	local redirect = ""
	local exists = ""
	
	if ttlobj.isRedirect == true then
		redirect = " is a redirect"
	else
		redirect = " is not a redirect"
	end
	
	if ttlobj.exists == true then
		exists = " exists"
	else
		exists = " does not exist"
	end
	
	local msg = ttlobj.text .. exists .. " and" .. redirect
	return msg
end
return p