MobFarmController_Slave

-- CONFIGURATION --
local redstoneSide = "bottom"     -- Side where redstone is connected
local listenChannel = 128         -- Wireless modem listen channel
local inverted = false            -- Invert redstone

-- Function to request and store the spawner ID
local function askForID()
    local idFile = "id_spawner.txt"

    -- Check if the ID file already exists
    if fs.exists(idFile) then
        local file = fs.open(idFile, "r")
        local id = tonumber(file.readAll())
        file.close()
        return id
    else
        write("Enter the spawner ID: ")
        local id = tonumber(read())

        local file = fs.open(idFile, "w")
        file.write(tostring(id))
        file.close()

        return id
    end
end

-- Ask for the spawner ID (and save it if first launch)
local SPAWNER_ID = askForID()

local modem = peripheral.find("modem")
if not modem then
    error("No modem detected")
end

modem.open(listenChannel) -- Open listening channel
redstone.setOutput(redstoneSide, false) -- Disable redstone by default

-- Function to get the current time in HH:mm:ss_DD/MM format
local function getTimestamp()
    local t = os.date("*t")
    return string.format("%02d:%02d:%02d_%02d/%02d", t.hour, t.min, t.sec, t.day, t.month)
end

print("Waiting for commands for spawner ID: " .. SPAWNER_ID)

while true do
    local event, side, senderChannel, replyChannel, message = os.pullEvent("modem_message")

    if type(message) == "table" and message.id == SPAWNER_ID then
        local state = message.state

        -- Apply inverted mode
        if inverted then
            state = not state
        end

        redstone.setOutput(redstoneSide, state)

        local timestamp = getTimestamp()
        print("[" .. timestamp .. "] Spawner " .. SPAWNER_ID .. " " ..
            ((state and not inverted) or (not state and inverted) and "activated" or "deactivated"))
    end
end