using System.Linq;
using UnityEngine;
using UnityEngine.EventSystems;

public class CropHandler : MonoBehaviour, IPointerDownHandler, IPointerClickHandler,
    IPointerEnterHandler, IPointerExitHandler
{
    public Material hoverMaterial;

    // private Collider2D _collider2D;
    // private Collider2D _localCollider2D;
    private Material _originalMaterial;
    private GameObject _player;
    private Renderer _renderer;

    private void Start()
    {
        /*_player = GameObject.Find("Player");*/
        // _localCollider2D = GetComponent<Collider2D>();
        // _collider2D = _player.GetComponent<Collider2D>();
        _renderer = GetComponent<Renderer>();
        if (_renderer == null)
            _renderer = GetComponentInChildren<Renderer>();

        if (_renderer == null)
            Debug.LogError("CROP: No Renderer found on CropHandler");
        Debug.Log("CROP: CropHandler Start Complete");

        if (hoverMaterial == null)
            hoverMaterial = Resources.Load<Material>("Materials/Sprites/HighlightPixelOutline");
    }

    private void Update()
    {
        /*// if the crop is not visible, return
        if (!_renderer.isVisible)
            return;

        // if the crop is visible and the player is above the crop, set the sortingOrder to 4
        // Get the bounds of the player and the crop
        var playerBounds = _collider2D.bounds;
        var cropBounds = _localCollider2D.bounds;

        if (playerBounds.min.y > cropBounds.min.y && playerBounds.min.y < cropBounds.max.y)
            // Debug.Log("CROP: OnTriggerEnter2D: Bottom of player is inside crop");
            _renderer.sortingOrder = AppConfig.PLAYER_LAYER + 1;
        // Check if the bottom of the player is inside the crop
        if (playerBounds.max.y > cropBounds.min.y && playerBounds.max.y < cropBounds.max.y)
            // Debug.Log("CROP: OnTriggerEnter2D: Top of player is inside crop");
            _renderer.sortingOrder = AppConfig.PLAYER_LAYER - 1;

        // middle of the player is inside the crop
        if (playerBounds.center.y > cropBounds.min.y && playerBounds.center.y < cropBounds.max.y)
            _renderer.sortingOrder = AppConfig.PLAYER_LAYER + 1;

        var overlapArea = Mathf.Max(0,
                              Mathf.Min(playerBounds.max.x, cropBounds.max.x) -
                              Mathf.Max(playerBounds.min.x, cropBounds.min.x))
                          * Mathf.Max(0,
                              Mathf.Min(playerBounds.max.y, cropBounds.max.y) -
                              Mathf.Max(playerBounds.min.y, cropBounds.min.y));

        // Calculate the total area of the player's collider
        var playerArea = playerBounds.size.x * playerBounds.size.y;

        // Calculate the percentage of the player's collider that is inside the crop's collider
        var overlapPercentage = overlapArea / playerArea;

        // Adjust the opacity of the crop sprite based on the overlap percentage
        var color = _renderer.material.color;
        color.a = Mathf.Clamp(1 - overlapPercentage, 0.5f, 1); // Adjust the range as needed
        _renderer.material.color = color;*/
    }


    // private void Update()
    // {
    //     // Get the bounds of the player and the crop
    //     var playerBounds = _collider2D.bounds;
    //     var cropBounds = _localCollider2D.bounds;
    //
    //     // Calculate the overlap area
    // }

    /*private void OnTriggerEnter2D(Collider2D other)
    {
        Debug.Log("CROP: OnTriggerEnter2D");
        Debug.Log("CROP: OnTriggerEnter2D: " + other.name);
        if (other.CompareTag("Player"))
            // if the player is coming from above the crop down the crop should be above the player
            if (other.transform.position.y < transform.position.y)
            {
                Debug.Log("CROP: OnTriggerEnter2D: Player is below crop");
                _renderer.sortingOrder = 4;
            }
            else
            {
                Debug.Log("CROP: OnTriggerEnter2D: Player is above crop");
                _renderer.sortingOrder = 0;
            }

        // If the player is coming from the right of the crop, the crop should be above the player
        if (other.transform.position.x > transform.position.x)
        {
            Debug.Log("CROP: OnTriggerEnter2D: Player is to the right of crop");
            _renderer.sortingOrder = 4;
        }
        else
        {
            Debug.Log("CROP: OnTriggerEnter2D: Player is to the left of crop");
            _renderer.sortingOrder = 0;
        }
    }*/

    private void OnTriggerEnter2D(Collider2D other)
    {
        /*Debug.Log("CROP: OnTriggerEnter2D");
        Debug.Log("CROP: OnTriggerEnter2D: " + other.name);
        if (other.CompareTag("Player"))
        {
            // Get the bounds of the player and the crop
            var playerBounds = other.bounds;
            var cropBounds = GetComponent<Collider2D>().bounds;

            // Check if the top of the player is inside the crop
            if (playerBounds.min.y > cropBounds.min.y && playerBounds.min.y < cropBounds.max.y)
            {
                Debug.Log("CROP: OnTriggerEnter2D: Bottom of player is inside crop");
                _renderer.sortingOrder = 101;
            }

            // Check if the bottom of the player is inside the crop
            if (playerBounds.max.y > cropBounds.min.y && playerBounds.max.y < cropBounds.max.y)
            {
                Debug.Log("CROP: OnTriggerEnter2D: Top of player is inside crop");
                _renderer.sortingOrder = 99;
            }
        }*/
    }

    private void OnTriggerExit(Collider other)
    {
        // reset the sortingOrder
        // _renderer.sortingOrder = 0;
        // _player = null;
    }

    public void OnPointerClick(PointerEventData eventData)
    {
        Debug.Log("CROP: OnPointerClick");
        var cropComponent = GetComponent<CropInteractiveComponent>();

        if (cropComponent == null)
        {
            Debug.LogError("CROP: OnPointerClick: CropInteractiveComponent is null");
            return;
        }

        if (cropComponent.interactable == null)
        {
            Debug.LogError("CROP: OnPointerClick: CropInteractable is null");
            return;
        }

        // if no tool is equipped
        if (!cropComponent.interactable.IsToolRequired())
        {
            if (!cropComponent.interactable.IsHarvestable())
                return;

            cropComponent.Harvest();
            return;
        }

        // should check what tool is equipped and active on the Hotbar.
        var activeSlot = ToolbarManager.Instance.ActiveSlot;

        // check if slot is tool
        if (activeSlot.item is ToolItem tool)
            // if the toolType is in the list from the crop
            if (cropComponent.interactable.validToolTypes.Contains(tool.toolType))
            {
                // check what tool it is and what action to take water or harvest
                if (tool.toolType == ToolItem.ToolType.Watering)
                {
                    cropComponent.Water();
                    return;
                }

                if (tool.toolType == ToolItem.ToolType.Harvesting)
                {
                    if (!cropComponent.interactable.IsHarvestable())
                        return;

                    cropComponent.Harvest();
                }
            }
    }

    public void OnPointerDown(PointerEventData eventData)
    {
        Debug.Log("CROP: OnPointerDown");
    }

    public void OnPointerEnter(PointerEventData eventData)
    {
        Debug.Log("CROP: OnPointerEnter");
        // change the material of the crop to show it is selected
        if (_renderer != null && hoverMaterial != null)
            _originalMaterial = _renderer.material;
        _renderer.material = hoverMaterial; // Change to hover material
    }

    public void OnPointerExit(PointerEventData eventData)
    {
        Debug.Log("CROP: OnPointerExit");
        // change the material of the crop back to the original
        if (_renderer != null && _originalMaterial != null)
            Debug.Log("CROP: OnPointerExit: Changing Material");
        _renderer.material = _originalMaterial; // Change to original material
    }
}