using System;
using Babushka.scripts.CSharp.Common.CharacterControls;
using Babushka.scripts.CSharp.Common.Inventory;
using Godot;

namespace Babushka.scripts.CSharp.Common.Farming;

[GlobalClass]
public partial class FieldBehaviour2D : Sprite2D
{
    [Export] private Sprite2D _fieldSprite;
    [Export] private Sprite2D _maskSprite;
    [Export] private Texture2D[] _maskTexture;
    [Export] private Texture2D Tilled;
    [Export] private Texture2D Watered;
    [Export] public FieldState FieldState = FieldState.Tilled;
    [Export] public InteractionArea2D PlantingInteraction;
    [Export] public Node2D PlantingPlaceholder;


    public Vector2 FieldPosition;

    public override void _Ready()
    {
        UpdateFieldState(FieldState);
        int randomIndex = new Random().Next(0, _maskTexture.Length);
        _maskSprite.Texture = _maskTexture[randomIndex];
        base._Ready();
    }
    
    public void UpdateFieldState(FieldState state)
    {
        switch (state)
        {
            case FieldState.Empty:
                FieldState = FieldState.Empty;
                PlantingInteraction.IsActive = false;
                break;
            case FieldState.Tilled:
                FieldState = FieldState.Tilled;
                _fieldSprite.Texture = Tilled;
                PlantingInteraction.IsActive = true;
                break;
            case FieldState.Watered:
                FieldState = FieldState.Watered;
                _fieldSprite.Texture = Watered;
                PlantingInteraction.IsActive = true;
                break;
            case FieldState.Planted:
                FieldState = FieldState.Planted;
                _fieldSprite.Texture = Tilled;
                PlantingInteraction.IsActive = false;
                break;
            default:
                FieldState = FieldState.NotFound;
                break;
        }
    }


    public void Water()
    {
        UpdateFieldState(FieldState.Watered);
    }
    
    /// <summary>
    /// Called when the player enters the field's interaction area and presses <E>.
    /// </summary>
    public void Farm()
    {
        if (TryPlant())
        {
           UpdateFieldState(FieldState.Planted);
        }
    }

    private bool TryPlant()
    {
        bool success = false;
        int currentSlotIndex = InventoryManager.Instance.CurrentSelectedSlotIndex;
        ItemInstance? item = InventoryManager.Instance.playerInventory.Slots[currentSlotIndex].itemInstance;

        if (item == null || PlantingPlaceholder.GetChildCount() > 0)
            return success;

        PackedScene? plantPrefab = item.blueprint.itemPrefab;

        if (plantPrefab != null)
        {
            Node plantInstance = plantPrefab.Instantiate();
            if (plantInstance is Node2D plant2d)
            {
                PlantingPlaceholder.AddChild(plant2d);
                plant2d.GlobalPosition = PlantingPlaceholder.GlobalPosition;
                PlantBehaviour2D? plantBehaviour = plant2d as PlantBehaviour2D;

                if (plantBehaviour != null)
                {
                    plantBehaviour.Field = this;
                }
                
                success = true;
            }
        }

        return success;
    }

}