local cb = peripheral.find("chatBox")
local srn = peripheral.wrap("top")

local logFile = fs.open("log.txt", "a")

local lines = {}

while true do
    local event, username, message, uuid, isHidden = os.pullEvent("chat")

    -- Get the current Unix time
    local timestamp = os.epoch("utc")

    -- Format the chat message with timestamp for logging
    local logMessage = os.date("%Y-%m-%d %H:%M:%S", timestamp) .. " - " .. username .. ": " .. message
    -- Format the chat message without timestamp for display
    local displayMessage = username .. ": " .. message

    -- Log the chat to a file
    logFile.writeLine(logMessage)
    logFile.flush()

    -- Update the lines table with the new message for display
    table.insert(lines, displayMessage)
    if #lines > 15 then
        table.remove(lines, 1)
    end

    -- Clear the screen
    srn.clear()

    -- Display the chat on the monitor
    srn.setCursorPos(1, 1)
    for i = 1, #lines do
        srn.write(lines[i])
        srn.setCursorPos(1, i + 1)
    end
end

logFile.close()