using System;
using UnityEngine;

public class TestingSceneManager : MonoBehaviour
{
    [Header("Testing Scene Setup")]
    [Tooltip("Check if we're loading a saved game in the Testing Scene section")]
    [SerializeField] private Transform playerNewGameStartPosition;
    public bool isLoadingTestingScene;

    [Header("Puzzle Objects")]
    [Tooltip("Reference to the puzzle GameObject if applicable")]
    [SerializeField] private GameObject puzzleGameObject;
    [Tooltip("Optional puzzle solved effects, if needed")]
    [SerializeField] private GameObject puzzleSolvedEffects;

    // 1. Define the loop states (8 loops + 1 puzzle)
    public enum TestingSceneState
    {
        CheckLoad,
        TestingSceneGameplay
    }

    // Current loop state
    public TestingSceneState testingSceneState = TestingSceneState.CheckLoad;


    private void Awake()
    {
        // Assign this manager to GameManager so it can be activated/deactivated appropriately
        if (GameManager.GetInstance() != null)
        {
            GameManager.GetInstance().testingSceneManager = this;
        }

        // If we are loading a saved game, mark accordingly
        if (LoadManager.GetInstance() != null && LoadManager.GetInstance().LoadingGame)
        {
            isLoadingTestingScene = true;
        }
    }

    public void Activate()
    {
        Debug.Log("Testing Scene Manager Activated: Initializing Children Loops.");
        //TryLoadSavedState();
        UpdateStoryline();
    }

    public void Deactivate()
    {
        Debug.Log("Testing Scene Manager Deactivated.");

        StopAllCoroutines();
        SaveStorylineState();
        CleanupPlayerSettings();

        // If you want to automatically progress upon deactivation, uncomment below:
        // NotifyCompletion();
    }

    public void UpdateStoryline()
    {
        switch (testingSceneState)
        {
            case TestingSceneState.CheckLoad:
                HandleCheckLoadState();

                break;

            case TestingSceneState.TestingSceneGameplay:
                Debug.Log("Testing Scene Gameplay activated.");
                if (isLoadingTestingScene)
                {
                    isLoadingTestingScene = false;
                }
                SaveStorylineState();
                break;

            default:
                Debug.LogWarning("Unhandled Testing Scene State: " + testingSceneState);
                break;
        }
    }

    private void HandleCheckLoadState()
    {
        if (IsInitialCutscenePlayed())
        {
            print("Try Load Saved State");
            TryLoadSavedState();
        }
        else //If started new game for the first time:
        {
            print("New game started");
            PlayInitialCutscene();
            SetupPlayer(playerNewGameStartPosition, enableCameraCarMovement: false, enablePlayerController: true,
                pocketWatchIsObtained: false);
            UpdateToNextStorylineState();
        }
    }
    private bool IsInitialCutscenePlayed() => GameProgressManager.GetInstance().initialCutscenePlayed;

    private void PlayInitialCutscene()
    {
        Debug.Log("Playing initial cutscene...");
        SetInitialCutscenePlayed(true);
        var gameProgressManager = GameProgressManager.GetInstance();
        gameProgressManager.playerControllerShouldBeEnabledOnGameLoad = false;
        gameProgressManager.playerCameraControllerShouldBeEnabledOnGameLoad = true;
    }
    private void SetInitialCutscenePlayed(bool value) => GameProgressManager.GetInstance().initialCutscenePlayed = value;

    private void SetupPlayer(Transform newPosition, bool enableCameraCarMovement, bool enablePlayerController, bool pocketWatchIsObtained)
    {
        var playerManager = PlayerManager.GetInstance();
        if (playerManager == null)
        {
            Debug.LogError("PlayerManager instance is missing!");
            return;
        }

        //playerManager.DisablePlayerMovement();
        playerManager.playerGameObj.transform.position = newPosition.position;
        playerManager.playerGameObj.transform.rotation = newPosition.rotation;
        playerManager.playerGameObj.transform.SetParent(newPosition);
        playerManager._cameraMovement.cameraCarMovement = enableCameraCarMovement;

        var gameProgressManager = GameProgressManager.GetInstance();
        gameProgressManager.playerControllerShouldBeEnabledOnGameLoad = enablePlayerController;
        gameProgressManager.PocketWatchIsObtained = pocketWatchIsObtained;
        InventoryManager.GetInstance().SaveTemporarilyPocketWatchInventoryItemData(true); //Obtained pocket watch so save temporarily.
    }

    /// <summary>
    /// Moves to the next loop/puzzle state, if available.
    /// </summary>
    public void UpdateToNextStorylineState()
    {
        TestingSceneState[] allStates = (TestingSceneState[])Enum.GetValues(typeof(TestingSceneState));
        int currentIndex = Array.IndexOf(allStates, testingSceneState);

        if (currentIndex < allStates.Length - 1)
        {
            // Move to the next state
            testingSceneState = allStates[currentIndex + 1];
            UpdateStoryline();
        }
        else
        {
            Debug.Log("All Testing Scene & Puzzles are complete.");
            NotifyCompletion();
        }
    }

    /// <summary>
    /// Attempt to load the saved Children loop state from GameProgressManager.
    /// </summary>
    private void TryLoadSavedState()
    {
        var gameProgressManager = GameProgressManager.GetInstance();
        if (gameProgressManager == null) return;

        if (Enum.TryParse(gameProgressManager.currentStorylineState, out TestingSceneState savedState))
        {
            testingSceneState = savedState;
            Debug.Log("Loaded Children Loop State from save: " + savedState);
            UpdateStoryline();
        }
        else
        {
            Debug.LogWarning("No valid saved Children Loop state found. Starting at Long Hallway Before Mirror Library.");
            testingSceneState = TestingSceneState.TestingSceneGameplay;
            UpdateStoryline();
        }

        // After loading, no longer in a loading phase
        isLoadingTestingScene = false;
    }

    /// <summary>
    /// Saves the current Children loop state to GameProgressManager.
    /// </summary>
    private void SaveStorylineState()
    {
        var gameProgressManager = GameProgressManager.GetInstance();
        if (gameProgressManager == null) return;

        gameProgressManager.currentStorylineState = testingSceneState.ToString();
    }

    /// <summary>
    /// Performs any final logic, then notifies GameManager this section is complete.
    /// </summary>
    private void NotifyCompletion()
    {
        // Let GameManager know this story section (ChildrenLoops) is done
        GameManager.GetInstance().OnStorySectionComplete(GameManager.StoryState.ChildrenLoops);
    }

    /// <summary>
    /// Resets or cleans up player settings if needed.
    /// </summary>
    private void CleanupPlayerSettings()
    {
        var playerManager = PlayerManager.GetInstance();
        if (playerManager != null)
        {
            // Example: disable or reset player movement or camera
            // playerManager.DisablePlayerMovement();
        }

        Debug.Log("Cleaned up settings specific to Children Loops.");
    }

    // ------------------------ Puzzle Handler ------------------------
    private void HandlePuzzle()
    {
        // Activate puzzle elements
        if (puzzleGameObject != null)
        {
            puzzleGameObject.SetActive(true);
        }

        // Optionally handle puzzle-solved scenario:
        // puzzleSolvedEffects.SetActive(true); // if puzzle is solved
        // Then call UpdateToNextLoopState() or NotifyCompletion() if final
    }
}