-- Function to clear the screen
local function clear()
    term.clear()
    term.setCursorPos(1, 1)
end

-- Function to open a file using the editor
local function openFileInEditor(filePath)
    shell.run("edit " .. filePath)
end

-- Function to handle sending redstone control signals
local function controlRedstone(computerID, sides)
    -- Attach the modem
    local modem = peripheral.find("modem")

    if not modem then
        print("No modem found. Please attach a modem.")
        return
    end

    modem.open(1) -- Open channel 1 for communication

    -- Iterate over each side
    for _, side in ipairs(sides) do
        -- Send signal to turn off redstone
        modem.transmit(1, 1, {action="off", duration=5, side=side, id=computerID})
        -- Wait for the specified duration
        sleep(5)
        -- Send signal to turn on redstone
        modem.transmit(1, 1, {action="on", side=side, id=computerID})
    end

    -- Close the modem channel
    modem.close(1)
end

-- Function to read the computer ID from the file
local function readComputerID()
    local file = fs.open("ID.txt", "r")
    local id = file.readLine()
    file.close()
    return tonumber(id)
end

-- Function to handle guest parking
local function handleGuest()
    clear()
    print("Guest Parking")
    write("Enter Number Plate: ")
    local numberPlate = read()
    write("Enter Car Make: ")
    local carMake = read()
    write("Enter Car Model: ")
    local carModel = read()
    write("Enter Your Name: ")
    local guestName = read()
    write("Enter Reason for Visit: ")
    local reason = read()

    -- Generate parking ticket content
    local ticket = "Parking Ticket\n"
    ticket = ticket .. "--------------------\n"
    ticket = ticket .. "Number Plate: " .. numberPlate .. "\n"
    ticket = ticket .. "Car Make: " .. carMake .. "\n"
    ticket = ticket .. "Car Model: " .. carModel .. "\n"
    ticket = ticket .. "Name: " .. guestName .. "\n"
    ticket = ticket .. "Reason for Visit: " .. reason .. "\n"
    ticket = ticket .. "--------------------\n"
    ticket = ticket .. "Thank you for visiting!"

    -- Write the ticket content to a file
    local filePath = "TICKET"
    local file = fs.open(filePath, "w")
    file.write(ticket)
    file.close()

    -- Notify user to print the file
    clear()
    print("The ticket has been created.")
    print("Press Ctrl+P to print the ticket.")
    print("Then press Ctrl+E to confirm and exit the editor.")
    print("You will be returned to the main menu once you confirm.")

    -- Open the file in the editor for printing
    openFileInEditor(filePath)

    -- Confirmation message after the editor is closed
    clear()
    print("The printing has been completed. You may proceed to the guest parking.")
    print("Press Ctrl+P and then Ctrl+E to confirm your ticket.")
    sleep(3) -- Wait for 3 seconds before returning to the main menu

    -- Control the redstone signal to the back
    local computerID = readComputerID()
    controlRedstone(computerID, {"back"})
    clear()
end

-- Function to handle resident parking
local function handleResident()
    clear()
    print("Resident Parking")
    write("Enter Your Name: ")
    local residentName = read()

    -- Check if the file exists
    local filePath = "/disk/" .. residentName
    if fs.exists(filePath) then
        write("Enter Password: ")
        local enteredPassword = read("*") -- Read password with hidden input

        -- Read the stored password from the file
        local file = fs.open(filePath, "r")
        local storedPassword = file.readLine()
        file.close()

        -- Check if the entered password matches the stored password
        if enteredPassword == storedPassword then
            clear()
            print("Welcome, " .. residentName .. "!")
            sleep(2)
            clear()
        else
            clear()
            print("Incorrect Password!")
            print("Press any key to return to main menu...")
            os.pullEvent("key")
        end
    else
        clear()
        print("Resident Not Found!")
        print("Press any key to return to main menu...")
        os.pullEvent("key")
    end

    -- Control the redstone signals for both back and left
    local computerID = readComputerID()
    controlRedstone(computerID, {"back", "left"})
    clear()
end

-- Main program loop
while true do
    clear()
    print("Parking System")
    print("1. Guest")
    print("2. Resident")
    write("Choose an option: ")
    local choice = read()

    if choice == "1" then
        handleGuest()
        fs.delete("TICKET") -- Ensure the ticket file is deleted after printing
    elseif choice == "2" then
        handleResident()
    else
        clear()
        print("Invalid option. Please try again.")
        sleep(2)
    end
end