using System;
using System.Linq;

using Colosseum.Combat;

using Unity.Behavior;
using Unity.Properties;
using UnityEngine;

using Condition = Unity.Behavior.Condition;

namespace Colosseum.AI.BehaviorActions.Conditions
{
    /// <summary>
    /// 지정 거리 이상 떨어진 적대 대상이 존재하는지 확인합니다.
    /// 기동(도약) 또는 유틸리티(투척) 패턴의 전제 조건으로 사용됩니다.
    /// </summary>
    [Serializable, GeneratePropertyBag]
    [Condition(name: "Target Beyond Distance", story: "[{MinDistance}]m 이상 떨어진 대상이 있는가?", id: "e5f6a7b8-4444-5555-666677778888")]
    [NodeDescription(
        name: "Target Beyond Distance",
        story: "Target beyond [{MinDistance}]m exists",
        category: "Condition/Pattern")]
    public partial class IsTargetBeyondDistanceCondition : Condition
    {
        [SerializeReference]
        [Tooltip("이 거리 이상 떨어진 대상이 있는지 확인")]
        public BlackboardVariable<float> MinDistance = new BlackboardVariable<float>(8f);

        public override bool IsTrue()
        {
            float minDistance = Mathf.Max(0f, MinDistance.Value);
            IDamageable[] targets = UnityEngine.Object.FindObjectsByType<MonoBehaviour>(FindObjectsSortMode.None)
                .OfType<IDamageable>()
                .ToArray();

            for (int i = 0; i < targets.Length; i++)
            {
                IDamageable target = targets[i];
                if (target == null)
                    continue;

                Component component = target as Component;
                if (component == null || !component.gameObject.activeInHierarchy)
                    continue;

                GameObject candidate = component.gameObject;
                if (candidate == GameObject)
                    continue;

                if (Team.IsSameTeam(GameObject, candidate))
                    continue;

                if (target.IsDead)
                    continue;

                float distance = Vector3.Distance(GameObject.transform.position, candidate.transform.position);
                if (distance >= minDistance)
                    return true;
            }

            return false;
        }
    }
}