Station

CableBundleSide = "right"

Timer = 0
MineTimer = 3000
MineNeedsTrain = false
TrainToMine = false

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function GetSignal(Color)
    return redstone.testBundledInput(CableBundleSide, Color)
end

function SetSignal(Color)
    redstone.setBundledOutput(CableBundleSide, Color)
end

function ResetSignals()
    redstone.setBundledOutput(CableBundleSide, 0)
end

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function TrainReturn()
    print("Checking if Train is returning...")
    if GetSignal(colors.gray) == true then
        print("Train is returning from the powerplant.")
        print("Starting entering station...")

        SetSignal(colors.black + colors.brown)

        while GetSignal(colors.yellow) == false do
            sleep(1)
        end
        sleep(2)
        Timer = 0
        ResetSignals()
    elseif GetSignal(colors.red) == true then
        print("Train is returning from the mine.")
        print("Starting entering station...")

        SetSignal(colors.white)

        while GetSignal(colors.yellow) == false do
            sleep(1)
        end
  sleep(2)
        TrainToMine = false
        MineTimer = 0
        ResetSignals()
    end
end

function TrainLeave()
    print("Checking if Train is ready to leave...")
    if Timer == 180 then
        print("Train is leaving to the powerplant.")
        print("Starting leaving station...")

        SetSignal(colors.black + colors.brown + colors.green)

        while GetSignal(colors.gray) == false do
            sleep(1)
        end
        sleep(2)
        Timer = 0
        ResetSignals()
    elseif (MineNeedsTrain == true) and (TrainToMine == false) then
        print("Train is leaving to the mine.")
        print("Starting leaving station...")

        SetSignal(colors.white + colors.green)

        while GetSignal(colors.red) == false do
            sleep(1)
        end
        sleep(2)
        TrainToMine = true
        MineTimer = 0
        ResetSignals()
    elseif TrainToMine == true then
        MineNeedsTrain = false
        MineTimer = 0
    end
end

function Timers()
    if MineTimer >= 3600 then
        MineNeedsTrain = true
        Timer = 0
    elseif GetSignal(colors.lightGray) == true then
        Timer = Timer + 1
    end
 MineTimer = MineTimer + 1
 print("MineTimer = "..MineTimer)
 print("MainTimer = "..Timer)
end

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while true do
    term.clear()
    TrainReturn()
    TrainLeave()
    Timers()
    sleep(1)
end