-- jaimeiji Google Code-in, Introduction to Lua in Wikipedia
-- jaimeiji Google Code-in, Lua Task 2 - 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

function p.temperature(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."
	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", "爷爷", "ユ子ばあちゃん", "Cousin Stanley"}
	local msg = ""
	for i = 1, #family do
		msg = msg .. "Hello " .. family[i] .. "<br>"
	end
	return msg
end

-- Task 5 -------------

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.unpackdate2 = function(frame)
	local mdydate = frame.args.mdydate or ""
	local month, day, year = string.match(mdydate, "(%w+) (%d+), (%d+)")
	return "Year = " .. year .. "<br>Day = " .. day .. "<br>Month = " .. month
end

return p