-- Get modem
local modem = peripheral.find("modem", rednet.open)

local reactorStatus = false
while true do
    -- Get power level from behind
    local block = peripheral.wrap("back")
    local power = block.getEnergyStored()
    local maxPower = block.getEnergyCapacity()

    -- Check if there is a redstone signal from the front side
    local redstoneSignal = redstone.getInput("front")

    -- If the power is less than x%, send a redstone signal until it's above 90%
    local powerThMin = 0.5
    local powerThMax = 0.9

    if redstoneSignal then
        redstone.setOutput("left", true)
        reactorStatus = true
    else if power < maxPower * powerThMin then
        redstone.setOutput("left", true)

        -- Send a message to the server
        reactorStatus = true
    else
        if power > maxPower * powerThMax then
            redstone.setOutput("left", false)
            
            -- Send a message to the server
            reactorStatus = false
        end
    end
    end

    local message = reactorStatus and "reactor_charging" or "reactor_discharging"
    rednet.broadcast(message, "cakehud_reactor")

    -- Make the screen
    term.clear()
    term.setCursorPos(1, 1)
    print("Power: " .. power .. "/" .. maxPower .. " (" .. math.floor(power / maxPower * 100) .. "%)")
    local thMsg = reactorStatus and
        "Power is below " .. powerThMin * 100 .. "%\nReactor is charging until " .. powerThMax * 100 .. "%" or
        "Power is above " .. powerThMin * 100 .. "%\nReactor is discharging until " .. powerThMin * 100 .. "%"
    print(thMsg)
    print("\nCTRL + T to exit")
    print("\nCakeHUD v1.0")

    -- Wait
    sleep(0.5)
end