using System.Threading.Tasks;
using Babushka.scripts.CSharp.Common.Inventory;
using Godot;

namespace Babushka.scripts.CSharp.Common.CharacterControls;

public partial class Player2D : CharacterBody2D
{
	[Export] private float _speed = 100f;
	[Export] private AnimatedSprite2D _sprite;
	[Export] private SceneTree.GroupCallFlags _fieldFlags;

	// -1 means no tool.
	private int _toolID = -1;
	private string _toolString;
	private bool anyActionPressed;
	private bool _canHandleInput = true;
	private Vector2 _lastDirection = Vector2.Zero;
	private InventoryManager _inventoryManager;

	public override void _Ready()
	{
		InventoryManager.Instance.playerInventory.InventoryContentsChanged += HandleNewItemInInventory;
	}

	private void HandleNewItemInInventory()
	{
		// for future Kathi: this does not, in fact, check if an item has been added only, but triggers on every content change!
		PlayPickUpAnimation();
	}
	

	public override void _Process(double delta)
	{
		anyActionPressed = false;
		
		if (!_canHandleInput)
			return;
		
		if (Input.IsActionPressed("move_right"))
		{
			Velocity = new Vector2(_speed, 0);
			MoveAndSlide();
			_sprite.FlipH = false;
			_sprite.Animation = "side walking" + _toolString;
			anyActionPressed = true;
			_lastDirection = Vector2.Right;
		}

		if (Input.IsActionPressed("move_left"))
		{
			Velocity = new Vector2(-_speed, 0);
			MoveAndSlide();
			_sprite.FlipH = true;
			_sprite.Animation = "side walking" + _toolString;
			anyActionPressed = true;
			_lastDirection = Vector2.Left;
		}

		if (Input.IsActionPressed("move_up"))
		{
			Velocity = new Vector2(0, -_speed);
			MoveAndSlide();
			_sprite.Animation = "back walking" + _toolString;
			anyActionPressed = true;
			_lastDirection = Vector2.Up;
		}

		if (Input.IsActionPressed("move_down"))
		{
			Velocity = new Vector2(0, _speed);
			MoveAndSlide();
			_sprite.Animation = "front walking" + _toolString;
			anyActionPressed = true;
			_lastDirection = Vector2.Down;
		}

		if (Input.IsActionPressed("interact2"))
		{
			_sprite.Animation = "back interact";
			anyActionPressed = true;
			_lastDirection = Vector2.Up;
		}
		
		if (Input.IsActionPressed("item"))
		{
			_sprite.Animation = "diagonal item";
			anyActionPressed = true;
			_lastDirection = Vector2.Right;
		}

		if (anyActionPressed)
		{
			_sprite.Play();
		}
		else
		{
			//idle
			if(_lastDirection == Vector2.Zero || _lastDirection == Vector2.Down)
				_sprite.Animation = "front idle" + _toolString;
			else if(_lastDirection == Vector2.Left || _lastDirection == Vector2.Right)
				_sprite.Animation = "side idle" + _toolString;
			else if(_lastDirection == Vector2.Up)
				_sprite.Animation = "back idle" + _toolString;
		}
	}

	public void ActivateTool(bool success, int id)
	{
		if (success)
		{
			_toolID = id;
		}
		else _toolID = -1;

		switch (_toolID)
		{
			case 0:
				_toolString = " rake";
				break;
			case 1:
				_toolString = " wateringcan";
				break;
			default:
				_toolString = "";
				break;
		}
	}

	/// <summary>
	/// Called by FarmingControls Signal.
	/// </summary>
	public void PlayWateringAnimation()
	{
		if (_toolID == 1 && _canHandleInput)
		{
			_sprite.Animation = "diagonal wateringcan";
			_sprite.Play();
			_canHandleInput = false;
			Task.Run(DelayedInputHandlerReset);
		}
	}

	private async Task DelayedInputHandlerReset()
	{
		await Task.Delay(1000); 
		_canHandleInput = true;
	}
	
	public void PlayPickUpAnimation()
	{
		_sprite.Animation = "side pickup";
		_sprite.Play();
		_canHandleInput = false;
		Task.Run(DelayedInputHandlerReset);
	}
	
	public void PlayFarmingAnimation()
	{
		_sprite.Animation = "diagonal farming";
		_sprite.Play();
		_canHandleInput = false;
		Task.Run(DelayedInputHandlerReset);
	}
	
	
	public void PlayWateringCanFillupAnimation()
	{
		_sprite.Animation = "back interact";
		_sprite.Play();
		_canHandleInput = false;
		_lastDirection = Vector2.Up;
		Task.Run(DelayedInputHandlerReset);
	}
	
	
}