using UnityEngine;
using UnityEngine.AI;
using UnityEngine.Animations;

// ReSharper disable once CheckNamespace
namespace BlueWaterProject
{
    public abstract class HumanAi : BaseAi
    {
        #region Properties and variables
        
        // 일반 변수
        protected LayerMask targetLayer;
        protected Vector3 defensePos;
        
        // 모델링 관련 변수
        protected Transform backpackContainer;
        protected Transform leftWeaponContainer;
        protected Transform leftShieldContainer;
        protected Transform headContainer;
        protected Transform rightWeaponContainer;
        protected Transform bodyContainer;
        protected Transform flagContainer;
        
        // 컴포넌트 관련 변수
        protected Animator humanAnimator;
        protected NavMeshAgent humanAgent;
        protected CapsuleCollider myCollider;
        protected CapsuleCollider hitBoxCollider;
        protected LookAtConstraint lookAtConstraint;
        
        // 애니메이션 관련 변수
        protected static readonly int SpeedHash = Animator.StringToHash("Speed");
        protected static readonly int AttackHash = Animator.StringToHash("Attack");
        protected static readonly int DamageHash = Animator.StringToHash("TakeDamage");
        protected static readonly int DeathTypeHash = Animator.StringToHash("DeathType");
        protected static readonly int DeathHash = Animator.StringToHash("Death");
        protected static readonly int ShieldHash = Animator.StringToHash("Shield");
        protected static readonly int OutlineColorHash = Shader.PropertyToID("_OutlineColor");
        
        #endregion

        #region Abstract methods

        protected abstract void SetLayer();

        protected abstract void SetCurrentHp(float value);

        #endregion

        #region Unity built-in methods

        protected virtual void Awake()
        {
            InitComponent();
            FlagLookAtFlag();
            SetLayer();
        }

        #endregion

        #region Custom methods

        private void InitComponent()
        {
            backpackContainer = Utils.GetComponentAndAssert<Transform>(transform.
                Find("Bip001/Bip001 Pelvis/Bip001 Spine/Backpack_container"));
            leftWeaponContainer = Utils.GetComponentAndAssert<Transform>(transform.
                Find("Bip001/Bip001 Pelvis/Bip001 Spine/Bip001 L Clavicle/Bip001 L UpperArm/Bip001 L Forearm/Bip001 L Hand/L_hand_container"));
            leftShieldContainer = Utils.GetComponentAndAssert<Transform>(transform.
                Find("Bip001/Bip001 Pelvis/Bip001 Spine/Bip001 L Clavicle/Bip001 L UpperArm/Bip001 L Forearm/Bip001 L Hand/L_shield_container"));
            headContainer = Utils.GetComponentAndAssert<Transform>(transform.
                Find("Bip001/Bip001 Pelvis/Bip001 Spine/Bip001 Neck/Bip001 Head/Head_container"));
            rightWeaponContainer = Utils.GetComponentAndAssert<Transform>(transform.
                Find("Bip001/Bip001 Pelvis/Bip001 Spine/Bip001 R Clavicle/Bip001 R UpperArm/Bip001 R Forearm/Bip001 R Hand/R_hand_container"));
            bodyContainer = Utils.GetComponentAndAssert<Transform>(transform.
                Find("Body_container"));
            flagContainer = Utils.GetComponentAndAssert<Transform>(transform.
                Find("Flag_container"));
            
            humanAnimator = Utils.GetComponentAndAssert<Animator>(transform);
            humanAgent = Utils.GetComponentAndAssert<NavMeshAgent>(transform);
            myCollider = Utils.GetComponentAndAssert<CapsuleCollider>(transform);
            hitBoxCollider = Utils.GetComponentAndAssert<CapsuleCollider>(transform.Find("HitBox"));
            lookAtConstraint = Utils.GetComponentAndAssert<LookAtConstraint>(flagContainer);
        }

        private void FlagLookAtFlag()
        {
            if (Camera.main != null)
            {
                var source = new ConstraintSource
                {
                    sourceTransform = Camera.main.transform,
                    weight = 1f
                };
                lookAtConstraint.AddSource(source);
            }

            lookAtConstraint.constraintActive = true;
        }
        
        protected void SetActiveViewModel(Transform container, int model)
        {
            foreach (Transform item in container)
            {
                if (!item.gameObject.activeSelf) continue;
                
                item.gameObject.SetActive(false);
            }

            if (model != -1)
            {
                container.GetChild(model).gameObject.SetActive(true);
            }
        }

        protected void SetMoveSpeed(float value) => humanAgent.speed = value;

        #endregion
    }
}