tArgs = { ... } -- Get the arguments passed by the user.
bCheckpointsPassed = false; -- True if we should continue with attempting to download the file, false otherwise.

if #tArgs < 2 then
	print( "Useage: dropbox <link> <filename>" )
else
	bCheckpointsPassed = true; -- There are enough arguments to proceed.
end

if fs.exists( tArgs[2] ) and bCheckpointsPassed then
	print( "File already exists." )
	bCheckpointsPassed = false; -- The file does not exist and therefore we shall not proceed.
end

-- If we're all clear to attempt to download this file.
if bCheckpointsPassed then
	while true do
		local Response = http.get( -- Request the file through the link passed as an argument.
			"https://www.dropbox.com/s/" .. tArgs[1]
		)

		if Response then -- If we got some sort of a response, or the variable is just not nil.
			print( "Success. Downloaded as " .. tArgs[2] )
			-- Write the response to the file. --
			local file = fs.open( tArgs[2], "w" )
			file.write( Response.readAll() )
			file.close()

			break
		else -- There was no response; the request timed out.
			print( "Failure." )
			break
		end
	end
end