-- startup

-- Function to display a full-screen error message
function displayError(message)
    term.clear()  -- Clear the screen
    term.setCursorPos(1, 1)  -- Set the cursor to the top-left corner
    local width, height = term.getSize()
    local xPos = math.floor((width - string.len(message)) / 2)  -- Center the text horizontally
    local yPos = math.floor(height / 2)  -- Center the text vertically
    term.setCursorPos(xPos, yPos)
    term.write(message)
    sleep(3)  -- Display the message for 3 seconds
    term.clear()  -- Clear the screen after showing the error
end

-- Function to run a program with error handling
function runWithErrorHandling(programName)
    local success, err = pcall(function()
        shell.run(programName)
    end)

    if not success then
        displayError("Error: " .. err)
    end
end

-- Execute the program with error handling
runWithErrorHandling("program.lua")