using System;
using Actions;
using UnityEngine;
using UnityEngine.Serialization;

public class UnitAnimator : MonoBehaviour {
    [SerializeField] private Animator animator;
    [SerializeField] private Transform bulletProjectilePrefab;
    [FormerlySerializedAs("shootPoint")] [SerializeField] private Transform shootPointTransform;
    private static readonly int isWalking = Animator.StringToHash("IsWalking");
    private static readonly int shoot = Animator.StringToHash("Shoot");

    private void Awake() {
        if (TryGetComponent(out MoveAction moveAction)) {
            moveAction.OnStartMoving += MoveAction_OnStartMoving;
            moveAction.OnStopMoving += MoveAction_OnStopMoving;
        }

        if (TryGetComponent(out ShootAction shootAction)) {
            shootAction.OnShoot += ShootAction_OnShoot;
        }
    }

    private void MoveAction_OnStartMoving(object sender, EventArgs e) => animator.SetBool(isWalking, true);
    private void MoveAction_OnStopMoving(object sender, EventArgs e) => animator.SetBool(isWalking, false);
    private void ShootAction_OnShoot(object sender, ShootAction.OnShootEventArgs e) {
        animator.SetTrigger(shoot);
        Transform bulletProjectPrefab = Instantiate(bulletProjectilePrefab, shootPointTransform.position, Quaternion.identity);
        Vector3 targetUnitShootAtPosition = e.TargetUnit.GetWorldPosition();
        targetUnitShootAtPosition.y = shootPointTransform.position.y;
        bulletProjectPrefab.GetComponent<BulletProjectile>().Setup(targetUnitShootAtPosition);
    }
}