local version = "Version 1.2"
local description = "'SSH'-Client for connecting to a remote controlable PC/Turtle via Rednet"

old_commands = {}

running = true
side = "left"			 --Side where the Modem is attached on
w, h = term.getSize()
Send_ID = 0
send_to = 0
nbr_com = 0
commandSpec = ""

--Functions

local function printCentered(str, ypos)
	term.setCursorPos(w/2 - #str/2, ypos)
	term.write(str)
end

local function printRight(str, ypos)
	term.setCursorPos(w - #str, ypos)
	term.write(str)
end

local function printLeft(str, ypos)
	term.setCursorPos(1, ypos)
	term.write(str)
end

function drawHeader()
	printCentered("SSH-System for Rednet.", 1)
	printCentered(string.rep("-", w), 2)
	printLeft(version, h)
	printRight("by Dean4Devil", h)
end


function ssh_send(msg)
	rednet.open(side)
	rednet.send(send_to, msg)
	id, answer, distance = rednet.receive(5)
	answer = tostring(answer)
	rednet.close(side)
end

--Funktions END
--Main
term.clear()
while running == true do
	term.clear()
	drawHeader()
	term.setCursorPos(1, 4)
	write( "> " )
	commandRaw = read()
	commandMain = tostring(commandRaw)
	table.insert(old_commands, commandMain)
	commandMainLower = string.lower(commandMain)
	commandSpec = string.sub(commandMain, 1, 1)
	if commandSpec == "/" then			--lokales Kommando -> nicht versenden!
		if commandMainLower == "/exit" then
			running = false
		elseif commandMainLower == "/connect" then
			print("Give ID:")
			write("> ")
			send_to = tonumber(read())
		elseif commandMainLower == "/disconnect" then
			send_to = 0
		elseif commandMainLower == "/dito" then
			write("\n")
			write(old_commands[#old_commands-1])
			ssh_send(old_commands[#old_commands-1])
		else
			print("Unknown Command!")
		end
	elseif commandSpec == "#" then		--Server-Präprozessor -> versenden

	else								--normale Kommandos -> versenden
		ssh_send(commandMain)
		print(answer)
		sleep(1)
	end

end
term.clear()
term.setCursorPos(1,1)
--Main END