using System;
using AppleHills.Core.Settings;
using Core;
using Input;
using Interactions;
using System.Threading.Tasks;
using PuzzleS;
using UnityEngine;


namespace Levels
{
    /// <summary>
    /// Saveable data for MinigameSwitch state
    /// </summary>
    [Serializable]
    public class MinigameSwitchSaveData
    {
        public bool isUnlocked;
    }

    /// <summary>
    /// Handles switching into minigame levels when interacted with. Applies switch data and triggers scene transitions.
    /// </summary>
    public class MinigameSwitch : SaveableInteractable
    {
        /// <summary>
        /// Data for this level switch (target scene, icon, etc).
        /// </summary>
        public LevelSwitchData switchData;
        
        /// <summary>
        /// If true, skip save/load logic and start the game active (unlocked by default)
        /// </summary>
        [SerializeField] private bool startUnlocked = false;
        
        private SpriteRenderer iconRenderer;
    
        // Settings reference
        private IInteractionSettings interactionSettings;

        private bool switchActive = true;
        private bool isUnlocked;

        /// <summary>
        /// Unity Awake callback. Sets up icon, interactable, and event handlers.
        /// </summary>
        protected override void OnManagedAwake()
        {
            base.OnManagedAwake();

            switchActive = true;
            if (iconRenderer == null)
                iconRenderer = GetComponent<SpriteRenderer>();

            // If startUnlocked is true, set isUnlocked and skip save/load logic
            if (startUnlocked)
            {
                isUnlocked = true;
            }

            // Initialize settings reference
            interactionSettings = GameManager.GetSettingsObject<IInteractionSettings>();
            ApplySwitchData();
        }
        
        protected override void OnManagedStart()
        {
            base.OnManagedStart();
            // If startUnlocked is true, always start active
            if (startUnlocked)
            {
                gameObject.SetActive(true);
                return;
            }
            
            if (PuzzleManager.Instance != null)
            {
                PuzzleManager.Instance.OnAllPuzzlesComplete += HandleAllPuzzlesComplete;
            }
            
            if (!IsRestoringFromSave && !isUnlocked)
            {
                gameObject.SetActive(false);
            }
        }
        
        protected override void OnDestroy()
        {
            base.OnDestroy();
            
            if (PuzzleManager.Instance != null)
            {
                PuzzleManager.Instance.OnAllPuzzlesComplete -= HandleAllPuzzlesComplete;
            }
        }

        private void HandleAllPuzzlesComplete(PuzzleS.PuzzleLevelDataSO _)
        {
            // Unlock the minigame
            isUnlocked = true;
            gameObject.SetActive(true);
            
            // Add to global unlocked minigames list
            if (switchData != null && !string.IsNullOrEmpty(switchData.targetLevelSceneName))
            {
                Core.SaveLoad.SaveLoadManager.Instance?.UnlockMinigame(switchData.targetLevelSceneName);
            }
            
            // Save will happen automatically on next save cycle via SaveableInteractable
        }

#if UNITY_EDITOR
        /// <summary>
        /// Unity OnValidate callback. Ensures icon and data are up to date in editor.
        /// </summary>
        void OnValidate()
        {
            if (iconRenderer == null)
                iconRenderer = GetComponent<SpriteRenderer>();
            ApplySwitchData();
        }
#endif

        /// <summary>
        /// Applies the switch data to the level switch (icon, name, etc).
        /// </summary>
        public void ApplySwitchData()
        {
            if (switchData != null)
            {
                if (iconRenderer != null)
                    iconRenderer.sprite = switchData.mapSprite;
                gameObject.name = switchData.targetLevelSceneName;
                // Optionally update other fields, e.g. description
            }
        }

        /// <summary>
        /// High-level validation: Only allow interaction if unlocked.
        /// </summary>
        protected override bool CanBeClicked()
        {
            return base.CanBeClicked() && isUnlocked;
        }

        /// <summary>
        /// Setup: Prevent re-entry while interaction is in progress.
        /// </summary>
        protected override void OnInteractionStarted()
        {
            switchActive = false;
        }

        /// <summary>
        /// Main interaction logic: Spawn menu and switch input mode.
        /// </summary>
        protected override bool DoInteraction()
        {
            if (switchData == null || string.IsNullOrEmpty(switchData.targetLevelSceneName))
            {
                Logging.Warning("MinigameSwitch has no valid switchData!");
                return false;
            }

            var menuPrefab = interactionSettings?.MinigameSwitchMenuPrefab;
            if (menuPrefab == null)
            {
                Debug.LogError("MinigameSwitchMenu prefab not assigned in InteractionSettings!");
                return false;
            }
            
            // Spawn the menu overlay
            var menuGo = Instantiate(menuPrefab);
            var menu = menuGo.GetComponent<MinigameSwitchMenu>();
            if (menu == null)
            {
                Debug.LogError("MinigameSwitchMenu component missing on prefab!");
                Destroy(menuGo);
                return false;
            }
            
            // Setup menu with data and callbacks
            menu.Setup(switchData, OnLevelSelectedWrapper, OnMenuCancel);
            
            // Switch input mode to UI only
            InputManager.Instance.SetInputMode(InputMode.UI);
            
            return true; // Menu spawned successfully
        }

        private void OnLevelSelectedWrapper()
        {
            _ = OnLevelSelected();
        }

        private async Task OnLevelSelected()
        {
            var progress = new Progress<float>(p => Logging.Debug($"Loading progress: {p * 100:F0}%"));
            await SceneManagerService.Instance.SwitchSceneAsync(switchData.targetLevelSceneName, progress);
        }
        
        private void OnMenuCancel()
        {
            switchActive = true; // Allow interaction again if cancelled
            InputManager.Instance.SetInputMode(InputMode.GameAndUI);
        }


        #region Save/Load Implementation

        protected override object GetSerializableState()
        {
            // Skip saving if startUnlocked is true
            if (startUnlocked)
                return null;
            
            return new MinigameSwitchSaveData
            {
                isUnlocked = isUnlocked
            };
        }

        protected override void ApplySerializableState(string serializedData)
        {
            // Skip loading if startUnlocked is true
            if (startUnlocked)
                return;
            
            MinigameSwitchSaveData data = JsonUtility.FromJson<MinigameSwitchSaveData>(serializedData);
            if (data == null)
            {
                Logging.Warning($"[MinigameSwitch] Failed to deserialize save data for {gameObject.name}");
                return;
            }

            isUnlocked = data.isUnlocked;
            
            // Sync with global unlocked minigames list
            if (isUnlocked && switchData != null && !string.IsNullOrEmpty(switchData.targetLevelSceneName))
            {
                Core.SaveLoad.SaveLoadManager.Instance?.UnlockMinigame(switchData.targetLevelSceneName);
            }
            
            // Show/hide based on unlock state
            gameObject.SetActive(isUnlocked);
        }

        #endregion
    }
}