using Core;
using UnityEngine;
using UnityEngine.UI;
using UI.Core;
using Minigames.FortFight.Core;
using Minigames.FortFight.Data;
using Pixelplacement;

namespace Minigames.FortFight.UI
{
    /// <summary>
    /// UI page for selecting single-player or two-player mode
    /// </summary>
    public class ModeSelectionPage : UIPage
    {
        [Header("Mode Selection Buttons")]
        [SerializeField] private Button singlePlayerButton;
        [SerializeField] private Button twoPlayerButton;
        
        [Header("Optional Visual Elements")]
        [SerializeField] private GameObject titleText;
        [SerializeField] private CanvasGroup canvasGroup;
        
        #region Initialization
        
        internal override void OnManagedAwake()
        {
            base.OnManagedAwake();
            
            // Validate button references
            if (singlePlayerButton == null)
            {
                Logging.Error("[ModeSelectionPage] Single player button not assigned!");
            }
            else
            {
                singlePlayerButton.onClick.AddListener(OnSinglePlayerSelected);
            }
            
            if (twoPlayerButton == null)
            {
                Logging.Error("[ModeSelectionPage] Two player button not assigned!");
            }
            else
            {
                twoPlayerButton.onClick.AddListener(OnTwoPlayerSelected);
            }
            
            // Set up canvas group if available
            if (canvasGroup == null)
            {
                canvasGroup = GetComponent<CanvasGroup>();
            }
        }
        
        #endregion

        #region Button Callbacks
        
        /// <summary>
        /// Called when single player button is clicked
        /// </summary>
        private void OnSinglePlayerSelected()
        {
            Logging.Debug("[ModeSelectionPage] Single player mode selected");
            
            if (FortFightGameManager.Instance != null)
            {
                FortFightGameManager.Instance.SelectGameMode(FortFightGameMode.SinglePlayer);
            }
            else
            {
                Logging.Error("[ModeSelectionPage] FortFightGameManager instance not found!");
            }
        }
        
        /// <summary>
        /// Called when two player button is clicked
        /// </summary>
        private void OnTwoPlayerSelected()
        {
            Logging.Debug("[ModeSelectionPage] Two player mode selected");
            
            if (FortFightGameManager.Instance != null)
            {
                FortFightGameManager.Instance.SelectGameMode(FortFightGameMode.TwoPlayer);
            }
            else
            {
                Logging.Error("[ModeSelectionPage] FortFightGameManager instance not found!");
            }
        }
        
        #endregion

        #region Transitions
        
        protected override void DoTransitionIn(System.Action onComplete)
        {
            // Simple fade in if canvas group is available
            if (canvasGroup != null)
            {
                canvasGroup.alpha = 0f;
                Tween.CanvasGroupAlpha(canvasGroup, 1f, transitionDuration, 0f, Tween.EaseOut, 
                    completeCallback: () => onComplete?.Invoke());
            }
            else
            {
                onComplete?.Invoke();
            }
        }
        
        protected override void DoTransitionOut(System.Action onComplete)
        {
            // Simple fade out if canvas group is available
            if (canvasGroup != null)
            {
                Tween.CanvasGroupAlpha(canvasGroup, 0f, transitionDuration, 0f, Tween.EaseIn, 
                    completeCallback: () => onComplete?.Invoke());
            }
            else
            {
                onComplete?.Invoke();
            }
        }
        
        #endregion

        #region Cleanup
        
        internal override void OnManagedDestroy()
        {
            base.OnManagedDestroy();
            
            // Unsubscribe from button events
            if (singlePlayerButton != null)
            {
                singlePlayerButton.onClick.RemoveListener(OnSinglePlayerSelected);
            }
            
            if (twoPlayerButton != null)
            {
                twoPlayerButton.onClick.RemoveListener(OnTwoPlayerSelected);
            }
        }
        
        #endregion
    }
}