--[[ VARIABLES ]]--
local x, y = term.getSize()
local SolarPanelsStat = true
local QuarryStat = false
local rSide = "left"
local selectedItem = 1
local inMainMenu = true

--[[ HANDLER FUNCTIONS ]]--

function Quarry()
    QuarryStat = not QuarryStat
end


--[[ FUNCTIONS ]]--

function Clear()
    term.setBackgroundColor(colors.black)
    term.setTextColor(colors.white)
    term.clear()
    term.setCursorPos(1, 1)
end

function writeSolarPanelsStatus()
    term.setCursorPos(x/1.3, 2)
    if SolarPanelsStat == true then
        term.setTextColor(colors.green)
        print("On ")
    elseif SolarPanelsStat == false then
        term.setTextColor(colors.red)
        print("Off")
    end
end

function writeStats()
    writeSolarPanelsStatus()
end

function ReceiveStats()
    rednet.open("left")
    local event, id, msg = os.pullEvent("rednet_message")
            if msg == "SolarPanelsOn" then
                SolarPanelsStat = true
            elseif msg == "SolarPanelsOff" then
                SolarPanelsStat = false
            elseif msg == "QuarryOn" then
                QuarryStat = true
            elseif msg == "QuarryOff" then
                QuarryStat = false
            end
        end

function CheckTime()
    term.setCursorPos(x/2-4.5, 1)
    local time = os.time()
    time = textutils.formatTime(time, false)
    term.setTextColor(colors.white)
    print(time)
end

function printDisplay()
    for i=1 , #display do
        term.setCursorPos(x/2, i+1)
        term.setTextColor(colors.white)
        print(display[i].text)
        term.setCursorPos(x/.5, 3)

        writeStats()
    end
end

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 onItemSelected(menu)
    menu[selectedItem].handler()
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 writeQuarryStats()
    term.setCursorPos(x/4, 2)
    if QuarryStat == true then
        term.setTextColor(colors.green)
        print("On ")
    elseif QuarryStat == false then
        term.setTextColor(colors.red)
        print("Off")
    end
end

function writeMenuStats()
    writeQuarryStats()
end

function main()
    while inMainMenu do
    Clear()
    term.setTextColor(colors.white)
    term.setCursorPos(1, 2)
    printMenu(mainMenu)
    writeMenuStats()

    local event,key = os.pullEvent("key")
    onKeyPressed(key, mainMenu)
    end
end

function PrintFinalStats()
    while true do
    CheckTime()
    printDisplay()
    ReceiveStats()
    end
end

function Parallel1()
    parallel.waitForAny(PrintFinalStats(),main())
end

function Parallel2()
    parallel.waitForAny(main(), PrintFinalStats())
end

--[[ TABLES ]]--

mainMenu = {
[1] = {text = "Quarry", handler = Quarry}
}

display = {
[1] = {text = "SolarPanels"}
}

--[[ MAIN CODE ]]--

Clear()
parallel.waitForAny(Parallel1, Parallel2)