Editing Module:Sandbox/Gnsjhenjie

--gnsJhenJie Google Code-in 2019, Introduction to Lua in Wikipedia
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)
	cel = tonumber(frame.args.celsius) or 0
	if cel >9 then msg = "It is warm." else msg = "It is cold." end
	fah = cel*9/5+32
	msg = msg .. " " .. cel .. " degrees Celsius is " .. fah .. " degrees Fahrenheit.<br>"
	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","John","Jonah","Bill"}
	local msg = ""
	for i = 1, #family do
		msg = msg .. "Hello " .. family[i] .. "<br>"
	end
	return msg
end

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

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 langlist = mw.language.getFallbacksFor( langcode )
	local langs = ""
	for k, v in pairs(langlist) do
		langs = langs .. k .. " - " .. v .. "<br>"
	end
	return langs
	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
	local ttlobj = mw.title.new(ttl)
	local exist = false
	local redirect = false
	if ttlobj.exists == true then exist = true end
	if ttlobj.isRedirect == true then redirect = true end
	if exist  then
		if redirect == true then
			return ttl .. " exists and is a redirect<br>"
		else
			return ttl .. " exists and is not a redirect<br>"
		end
	else
		return ttl .. " does not exist and is not a redirect<br>"
	end
end

return p