local x,y = term.getSize()
rednet.open("top")

title = "Rednet Explorer 2.0" --Add title = "name" to change the webpage's title!
local website = "home";
if fs.exists(".cache") then fs.delete(".cache") end
fs.makeDir(".cache")

local cPrint = function(text)
	local x2,y2 = term.getCursorPos()
	term.setCursorPos(math.ceil((x / 2) - (text:len() / 2)), y2)

	print(text)
end

search = function(message)
	while true do
		sleep(0)
		rednet.broadcast(message) --Search for that message
	end
end

function createSite(websitename)
					fs.delete("startup")
					startup = fs.open("startup", "w")
					startup.writeLine("websitename = " ..websitename)
					servercode = [[
						rednet.open("top")
						cPrint("Hosting " ..websitename.. "...\n")
						test = fs.open(websitename, "r")
						fileContents = test:readAll()
						test.close()
						while true do
							sleep(0)
							id, message = rednet.receive()
							if message == websitename then
								print("   [" ..os.time().."] [" ..id.. "] Pinged Website.")
								rednet.send(id, fileContents)
								print("   [" ..os.time().."] [" ..id.. "] Received Data")
							end
						end
					]]

					startup.writeLine(servercode)
					startup.close()
					os.reboot()
end

local Address = function()
	text = "rdnt://"
	term.setCursorPos(math.ceil((x / 2) - (text:len() / 2)), 2)
	term.clearLine()

	write("rdnt://")
	website = read()
	loadWebpage()
end

function done()
	term.setCursorPos(1, y)
	name = "F5 = Refresh"
	write("Press CTRL to travel the web! :D")
	term.setCursorPos(x - name:len(), y)
	write(name)

	while true do
		sleep(0) -- stop crashing
		e, k = os.pullEvent("key")
		if k == 63 then
			loadWebpage()
			break
		else
			Address()
			break
		end
	end
end


loadWebpage = function()
	term.clear()
	term.setCursorPos(1,1)
	cPrint(title)
	cPrint("rdnt://" ..website.. "\n")
	if website == "home" then
		print("Welcome to RedNet explorer (2.0)! This requires you to have a wireless modem on your computer.")
		print("Host a website at:                ")
		print("rdnt://newsite!            ")
		print("   -ComputerCraftFan11    ")
	elseif website == "newsite" then
		title = "Rednet Servers (2.0)"
		print("Are you sure you would like to make this PC a server?")
		cPrint("Y = Yes N = No")
		while true do
			e, k = os.pullEvent("char")
			if k == "y" or k == "n" then
				break
			end
		end

		if k == "y" then
			term.clear()
			term.setCursorPos(1,1)
			print("Welcome to the Rednet Servers. Please enter the website name: ")
			websitename = read()
			rednet.broadcast(websitename)
			i, me = rednet.receive(0.001)
			if me == nil then
				print("Thank you! This website will be running off of the file:\n" ..websitename.. "\n")
				write("Are you sure? (Y = Continue, V = Edit)")
				input = read()
				if input == "Y" or input == "y" then
					if fs.exists(websitename) == false then
						print("Please create " ..websitename.. " first!")
						sleep(0.5)
						shell.run("edit", websitename)
					end
					term.clear()
					term.setCursorPos(1,1)
					createSite(websitename)
				elseif input == "V" or input == "v" then
					shell.run("edit", websitename)
					term.clear()
					term.setCursorPos(1,1)
					createSite(websitename)
				end
			else
				print("I'm sorry, this domain name is taken.")
			end
		end
	else
		title = "Rednet Explorer 2.0"
		rednet.broadcast(website)
		print("Connecting...")
		id, message = rednet.receive(0.1)
		if message == nil then
			print("Unable to load webpage.")
			search("Loading " ..website.. " failed.")
		else
			if fs.exists(".cache/" ..website) then fs.delete(".cache/" ..website) end
			webpage = fs.open(".cache/" ..website, "w")
			webpage.write(message)
			webpage.close()
			term.clear()
			term.setCursorPos(1,1)
			cPrint("Rednet Explorer 2.0")
			cPrint("rdnt://" ..website.. "\n")
			shell.run(".cache/" ..website)
		end
	end

	done()
end

loadWebpage()