using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Animations;

namespace Saltosion.OneWeapon {
    public class Player : MonoBehaviour {

        public Rigidbody2D Body;
        public Transform Hand;
        public Transform SubHand;
        public float MoveSpeed = 50f;

        public SpriteRenderer BodySprite;
        public Animator BodyAnim;
        public SpriteRenderer HeadSprite;
        public Animator HeadAnim;

        public Transform HandLeft;
        public Transform HandRight;
        public Transform HandMiddle;

        public CameraFX CameraFX;

        private Gun Gun;

        private Vector2 GunLocation = new Vector2(0, -0.6f);
        private Vector3 GunRotation = new Vector3(0, 0, -90);

        public float HandRetractSpeed = 10;
        public float HandRotationRetractSpeed = 300;
        private float CurrentHandRotation = 0f;
        private float CurrentHandDistance = 0f;

        public bool IsMoving {
            private set; get;
        } = false;

        void Update() {
            float X = Input.GetAxis("Horizontal");
            float Y = Input.GetAxis("Vertical");

            Vector2 Direction = new Vector2(X, Y).normalized;

            Body.velocity = Direction * MoveSpeed;

            Vector3 MousePos = Input.mousePosition;
            Vector3 PointedPos = Camera.main.ScreenToWorldPoint(MousePos);

            Vector2 LookDirection = (PointedPos - Hand.position).normalized;

            Vector3 Rot = Hand.localEulerAngles;
            Rot.z = Mathf.Atan2(LookDirection.y, LookDirection.x) * Mathf.Rad2Deg + 90;
            Hand.localEulerAngles = Rot;

            float Rotation = Rot.z;

            if (Rotation >= 45 && Rotation < 135) {
                BodyAnim.Play("HorizontalBody");
                BodySprite.flipX = false;
                HeadAnim.Play("HeadRight");
                HeadSprite.flipX = false;
                Hand.localPosition = HandMiddle.localPosition;
            } else if (Rotation >= 225 || Rotation < -45) {
                BodyAnim.Play("HorizontalBody");
                BodySprite.flipX = true;
                HeadAnim.Play("HeadRight");
                HeadSprite.flipX = true;
                Hand.localPosition = HandMiddle.localPosition;
            } else {
                if (Rotation >= 135 && Rotation < 225) {
                    HeadAnim.Play("HeadUp");
                    Hand.localPosition = HandRight.localPosition;
                } else {
                    HeadAnim.Play("HeadDown");
                    Hand.localPosition = HandLeft.localPosition;
                }
                BodyAnim.Play("VerticalBody");
                BodySprite.flipX = false;
                HeadSprite.flipX = false;
            }
            if (Gun != null) {
                if (Rotation >= 180 || Rotation <= -45) {
                    Gun.FlipGun(true);
                } else if (Rotation < 180 || Rotation > 45) {
                    Gun.FlipGun(false);
                }
            }


            if (Direction.magnitude > 0.05) {
                BodyAnim.SetFloat("Speed", 1);
                HeadAnim.SetFloat("Speed", 1);
                IsMoving = true;
            } else {
                BodyAnim.SetFloat("Speed", 0);
                HeadAnim.SetFloat("Speed", 0);
                IsMoving = false;
            }

            bool Shoot = Input.GetButtonDown("Shoot");
            if (Shoot) {
                if (Gun != null) {
                    Gun.Shoot(LookDirection, Rotation);
                    CameraFX.StopFor(0.03f);
                    CameraFX.ScreenShake(4f);
                } else if (CurrentHandDistance <= 0) {
                    CurrentHandDistance = 1.5f;
                    CurrentHandRotation = 100;
                }
            }

            if (CurrentHandDistance > 0) {
                CurrentHandDistance -= HandRetractSpeed * Time.deltaTime;
                CurrentHandDistance = Mathf.Max(CurrentHandDistance, 0);
            }

            if (CurrentHandRotation > 0) {
                CurrentHandRotation -= HandRotationRetractSpeed * Time.deltaTime;
                CurrentHandRotation = Mathf.Max(CurrentHandRotation, 0);
            }

            Vector3 HandPosition = SubHand.localPosition;
            HandPosition.y = -CurrentHandDistance;
            SubHand.localPosition = HandPosition;

            Vector3 HandRotation = SubHand.localEulerAngles;
            HandRotation.z = CurrentHandRotation;
            SubHand.localEulerAngles = HandRotation;
        }

        public void SetGun(Gun gun) {
            if (Gun != null) {
                Destroy(Gun.gameObject);
            }
            Gun = gun;
            Gun.transform.parent = Hand;
            Gun.transform.localPosition = GunLocation;
            Gun.transform.localEulerAngles = GunRotation;
        }
    }

}