using System;
using UnityEngine;
using UnityEngine.UI;
using Core;
using UI;

namespace Minigames.BirdPooper
{
    /// <summary>
    /// Game over screen for Bird Pooper minigame.
    /// Displays when the player dies and allows restarting the level.
    /// Uses unscaled time for UI updates (works when Time.timeScale = 0).
    /// </summary>
    public class GameOverScreen : MonoBehaviour
    {
        [Header("UI References")]
        [SerializeField] private Button dismissButton;
        [SerializeField] private CanvasGroup canvasGroup;
        
        private void Awake()
        {
            // Subscribe to button click
            if (dismissButton != null)
            {
                dismissButton.onClick.AddListener(OnDismissClicked);
            }
            else
            {
                Debug.LogError("[GameOverScreen] Dismiss button not assigned!");
            }
            
            // Get or add CanvasGroup for fade effects
            if (canvasGroup == null)
            {
                canvasGroup = GetComponent<CanvasGroup>();
                if (canvasGroup == null)
                {
                    canvasGroup = gameObject.AddComponent<CanvasGroup>();
                }
            }
            
            // Hide by default
            gameObject.SetActive(false);
        }
        
        private void OnDestroy()
        {
            // Unsubscribe from button
            if (dismissButton != null)
            {
                dismissButton.onClick.RemoveListener(OnDismissClicked);
            }
        }
        
        /// <summary>
        /// Show the game over screen and pause the game.
        /// </summary>
        public void Show()
        {
            gameObject.SetActive(true);
            
            // Set canvas group for interaction
            if (canvasGroup != null)
            {
                canvasGroup.alpha = 1f;
                canvasGroup.interactable = true;
                canvasGroup.blocksRaycasts = true;
            }
            
            // Pause the game (set timescale to 0)
            // PauseMenu uses unscaled time for tweens, so it will still work
            Time.timeScale = 0f;
            
            Debug.Log("[GameOverScreen] Game Over - Time.timeScale set to 0");
        }
        
        /// <summary>
        /// Called when dismiss button is clicked. Reloads the level.
        /// </summary>
        private async void OnDismissClicked()
        {
            Debug.Log("[GameOverScreen] Dismiss button clicked - Reloading level");
            
            // Hide this screen first
            if (canvasGroup != null)
            {
                canvasGroup.interactable = false;
                canvasGroup.blocksRaycasts = false;
            }
            gameObject.SetActive(false);
            
            // Reset time scale BEFORE reloading
            Time.timeScale = 1f;
            
            // Now reload the current scene with fresh state - skipSave=true prevents re-saving cleared data
            var progress = new Progress<float>(p => Logging.Debug($"Loading progress: {p * 100:F0}%"));
            await SceneManagerService.Instance.ReloadCurrentScene(progress, autoHideLoadingScreen: true, skipSave: true);
        }
    }
}