using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;
using TMPro;

public class TaskTimer : MonoBehaviour
{
    [Header("Timer Settings")]
    [Tooltip("Total time for the task in seconds")]
    public float taskDuration = 300f; // 5 minutes default
    
    [Tooltip("Start timer automatically on scene load")]
    public bool autoStart = true;
    
    [Tooltip("Show warning when time is low (in seconds)")]
    public float warningThreshold = 30f;

    [Header("UI References")]
    [Tooltip("TextMeshPro component to display timer (recommended for VR)")]
    public TextMeshProUGUI timerTextTMP;
    
    [Tooltip("Legacy UI Text component (if not using TextMeshPro)")]
    public Text timerTextLegacy;

    [Header("Visual Settings")]
    [Tooltip("Normal color for timer text")]
    public Color normalColor = Color.white;
    
    [Tooltip("Warning color when time is running low")]
    public Color warningColor = Color.red;
    
    [Tooltip("Format: 'MM:SS' or 'HH:MM:SS'")]
    public bool showHours = false;

    private float timeRemaining;
    private bool isRunning;

    private void Start()
    {
        timeRemaining = taskDuration;
        
        if (autoStart)
        {
            StartTimer();
        }
        
        UpdateTimerDisplay();
    }

    private void Update()
    {
        if (!isRunning)
            return;

        timeRemaining -= Time.deltaTime;

        // Check if time is up
        if (timeRemaining <= 0)
        {
            timeRemaining = 0;
            OnTimerExpired();
        }

        UpdateTimerDisplay();
    }

    public void StartTimer()
    {
        isRunning = true;
        Debug.Log($"TaskTimer: Timer started for {taskDuration} seconds");
    }

    public void PauseTimer()
    {
        isRunning = false;
        Debug.Log("TaskTimer: Timer paused");
    }

    public void ResumeTimer()
    {
        isRunning = true;
        Debug.Log("TaskTimer: Timer resumed");
    }

    public void ResetTimer()
    {
        timeRemaining = taskDuration;
        UpdateTimerDisplay();
        Debug.Log("TaskTimer: Timer reset");
    }

    public void AddTime(float seconds)
    {
        timeRemaining += seconds;
        Debug.Log($"TaskTimer: Added {seconds} seconds. New time: {timeRemaining}");
    }

    private void UpdateTimerDisplay()
    {
        string timeText = FormatTime(timeRemaining);
        
        // Update TextMeshPro
        if (timerTextTMP != null)
        {
            timerTextTMP.text = timeText;
            timerTextTMP.color = timeRemaining <= warningThreshold ? warningColor : normalColor;
        }
        
        // Update Legacy Text
        if (timerTextLegacy != null)
        {
            timerTextLegacy.text = timeText;
            timerTextLegacy.color = timeRemaining <= warningThreshold ? warningColor : normalColor;
        }
    }

    private string FormatTime(float time)
    {
        int hours = Mathf.FloorToInt(time / 3600f);
        int minutes = Mathf.FloorToInt((time % 3600f) / 60f);
        int seconds = Mathf.FloorToInt(time % 60f);

        if (showHours)
        {
            return string.Format("{0:00}:{1:00}:{2:00}", hours, minutes, seconds);
        }
        else
        {
            int totalMinutes = Mathf.FloorToInt(time / 60f);
            return string.Format("{0:00}:{1:00}", totalMinutes, seconds);
        }
    }

    private void OnTimerExpired()
    {
        isRunning = false;
        Debug.Log("TaskTimer: Time expired! Returning to Lobby...");
        
        // Load Lobby scene
        SceneManager.LoadScene("Lobby");
    }

    // Public methods for external control
    public float GetTimeRemaining()
    {
        return timeRemaining;
    }

    public bool IsRunning()
    {
        return isRunning;
    }

    public float GetProgress()
    {
        return 1f - (timeRemaining / taskDuration);
    }
}