local termWidth, termHeight = term.getSize()
local selectedItem = 1
local selectedItemRC = 1
local onMainMenu = true
local onRContMenu = false
local onPowerMenu = false
reactor = peripheral.wrap("back")


function Choice1()
 term.clear()
 term.setCursorPos(1,1)
 RCmenuMain()
end

function Choice2()
term.clear()
term.setCursorPos(1,1)
print("Environment")
sleep(1)
end

function Exit()

end

mainMenu = {
[1] = { text = "Reactor", handler = RCmenuMain },
[2] = { text = "Environment", handler = Choice2 },
[3] = { text = "Exit", handler = Exit }
}

function printMenu( menu )
 for i=1,#menu do
  if i == selectedItem then
   print(">> "..menu[i].text)
  else
   print("   "..menu[i].text)
  end
 end
end

function onKeyPressed( key, menu )
 if key == keys.enter then
  onItemSelected(menu)
 elseif key == keys.up then
  if selectedItem > 1 then
   selectedItem = selectedItem - 1
  end
 elseif key == keys.down then
  if selectedItem < #menu then
   selectedItem = selectedItem + 1
  end
 end
end

function onItemSelected( menu )
 menu[selectedItem].handler()
end

function main()
 while onMainMenu == true do
  term.clear()
  term.setCursorPos(1,1)
  printMenu(mainMenu)
  event, key = os.pullEvent("key")
  onKeyPressed(key,mainMenu)
 end
end

main()

-- Reactor Menu --

function rCont1()
 term.clear()
 term.setCursorPos(1,1)
 print("Tempetature")
 sleep(1)
end

function rCont2()
term.clear()
term.setCursorPos(1,1)
print("Output Level")
sleep(1)
end

function rCont3()
 term.clear()
 term.setCursorPos(1,1)
 print("Fuel")
 sleep(1)
end

function rCont4()
term.clear()
term.setCursorPos(1,1)
print("Shutting System Down")
rs.setOutput("left", false)
sleep(1)
end

function rCont5()
 term.clear()
 term.setCursorPos(1,1)
 print("Power Control")
 onRContMenu = false
 onMainMenu = false
 onPowerMenu = true
 sleep(1)
end

function rCont6()
term.clear()
term.setCursorPos(1,1)
print("-Back-")
sleep(1)
onPowerMenu = false
onRContMenu = false
onMainMenu = true
end


-- Heat functions --

function heatLevel()
term.setCursorPos(1,1)
reactor.isActive()
        if reactor.isActive() == true then
        print("Reactor Is Currently: Online")
        else
        print("Reactor Is Currently: Offline")
        end
reactor.getHeat()
reactor.getMaxHeat()
danger = reactor.getMaxHeat
        if reactor.getHeat >= (.75 * danger) then
        print("!~~!WARNING! HEAT LEVEL CRITICAL!~~!")
        else
        print("Within Normal Operating Temp")
        end
print("Current Temp")
print("  ")
print(reactor.getHeat)
print("  ")
print("Max Temp")
print("  ")
print(reactor.getMaxHeat)
end


RCmenu = {
[1] = { text = "Tempetature", handler = rCont1 },
[2] = { text = "Output Level", handler = rCont2 },
[3] = { text = "Fuel", handler = rCont3 },
[4] = { text = "Emergency Shutdown", handler = rCont4 },
[5] = { text = "Power Control", handler = rCont5 },
[6] = { text = "-Back-", handler = rCont6 },
[7] = { text = "Exit", handler = Exit }
}

function printMenuRC( RCmenu )
 for b=1,#RCmenu do
  if b == selectedItemRC then
   print(">> "..RCmenu[b].text)
  else
   print("   "..RCmenu[b].text)
  end
 end
end

function onKeyPressedRC( key, RCmenu )
 if key == keysRC.enter then
  onItemSelectedRC(RCmenu)
 elseif key == keysRC.up then
  if selectedItemRC > 1 then
   selectedItemRC = selectedItemRC - 1
  end
 elseif key == keysRC.down then
  if selectedItemRC < #RCmenu then
   selectedItemRC = selectedItemRC + 1
  end
 end
end

function onItemSelectedRC( RCmenu )
 RCmenu[selectedItemRC].handler()
end

function RCmenuMain()
b=1
i=2
 onMainMenu = false
 onRContMenu = true
 while onRContMenu == true do
  term.clear()
  term.setCursorPos(1,1)
  printMenuRC( RCmenu )
  eventRC, key = os.pullEvent("key")
  onKeyPressedRC(key,RCmenu)
 end
end

RCmenuMain()