using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;

[RequireComponent(typeof(Rigidbody2D), typeof(TouchingDirection), typeof(Damageable))]
public class ControllerButton : MonoBehaviour, IDataPresistence
{
    public float walkSpeed = 5f;
    public float jumpImpulse = 10f;
    Vector2 moveInput;
    TouchingDirection touchingDirection;
    Damageable damageable;

    int attackCount;

    Rigidbody2D rb;

    [SerializeField]
    private bool _isMoving = false;

    public bool IsMoving
    {
        get
        {
            return _isMoving;
        }
        private set
        {
            _isMoving = value;
            animator.SetBool(AnimationStrings.isMoving, value);
        }
    }

    public bool _isFacingRight = true;

    public bool IsFacingRight { get
        {
            return _isFacingRight;
        } private set
        {
            if (_isFacingRight != value)
            {
                transform.localScale *= new Vector2(-1, 1);
            }

            _isFacingRight = value;
        }
    }

    public bool CanMove {
        get 
        { 
            return animator.GetBool(AnimationStrings.canMove);
        }
    }

    public bool IsAlive
    {
        get
        {
            return animator.GetBool(AnimationStrings.isAlive);
        }
    }

    Animator animator;
    
    private void Awake()
    {
        rb = GetComponent<Rigidbody2D>();
        animator = GetComponent<Animator>();
        touchingDirection = GetComponent<TouchingDirection>();
        damageable = GetComponent<Damageable>();
    }

    private void FixedUpdate()
    {
        if (!damageable.LockVelocity)
        {
            rb.velocity = new Vector2(moveInput.x * walkSpeed, rb.velocity.y);
        }
        if (CanMove)
        {
            if (!touchingDirection.IsOnWall)
            {
                rb.velocity = new Vector2(moveInput.x * walkSpeed, rb.velocity.y);
            }
            else
            {
                rb.velocity = new Vector2(0, rb.velocity.y);
            }
        }
        else
        {
            rb.velocity = new Vector2(0, rb.velocity.y);
        }
    }

    public void OnMove(InputAction.CallbackContext context)
    {
        moveInput = context.ReadValue<Vector2>();

        if (IsAlive)
        {
            IsMoving = moveInput != Vector2.zero;

            SetFacingDirections(moveInput);
        }
        else
        {
            IsMoving = false;
        }
    }

    private void SetFacingDirections(Vector2 moveInput)
    {
        if (moveInput.x > 0 && !IsFacingRight)
        {
            // face right
            IsFacingRight = true;
        }
        else if (moveInput.x < 0 && IsFacingRight)
        {
            // face left
            IsFacingRight = false;
        }
    }

    public void OnJump(InputAction.CallbackContext context)
    {
        // TODO Check if alive
        if (context.started && touchingDirection.IsGrounded && CanMove)
        {
            rb.velocity = new Vector2(rb.velocity.x, jumpImpulse);
        }
    }

    public void OnAttack(InputAction.CallbackContext context)
    {
        if (context.started)
        {
            animator.SetTrigger(AnimationStrings.attackTrigger);
            attackCount++;
        }
    }

    public void OnHit(int damage, Vector2 knockback)
    {
        rb.velocity = new Vector2(knockback.x, rb.velocity.y + knockback.y);
    }

    public void LoadData(GameData data)
    {
        attackCount = data.attackCount;
    }

    public void SaveData(ref GameData data)
    {
        data.attackCount = attackCount;
    }
}