using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using BehaviorDesigner.Runtime;
using BehaviorDesigner.Runtime.Tasks;

namespace BehaviorDesigner.Runtime.Tasks
{
    /// <summary>
    /// 行为 攻击
    /// </summary>
    public class ActionAttack : Action
    {
        [Tooltip("攻击目标")]
        public SharedTransform target;

        [BehaviorDesigner.Runtime.Tasks.Tooltip("攻击条件")]
        public AttackCondition attackCondition = new AttackCondition();

        [BehaviorDesigner.Runtime.Tasks.Tooltip("animator的攻击触发器开关")]
        public SharedString attackTriggerName = "Attack1";

        [BehaviorDesigner.Runtime.Tasks.Tooltip("攻击条件成功后，等待时间多少时间离开此状态")]
        public SharedFloat waitTime = 2;

        [BehaviorDesigner.Runtime.Tasks.Tooltip("是否随机攻击")]
        public bool randomAttack = false;

        [BehaviorDesigner.Runtime.Tasks.Tooltip("失败是否自动继续执行后面逻辑")]
        public bool failAutoNext = false;

        [BehaviorDesigner.Runtime.Tasks.Tooltip("随机攻击攻击的触发器开关集合,随机攻击开启后会在列表内随机使用其中一个攻击，randomAttack为false时无效")]
        public List<string> randomAttackTriggerNames = new List<string>();

        /// <summary>
        /// 开始时间
        /// </summary>
        private float startTime;

        /// <summary>
        /// 动画控制器
        /// </summary>
        private Animator animator = null;

        /// <summary>
        /// 攻击条件是否达成
        /// </summary>
        private bool attackConditionSuccess = false;

        private Role role = null;

        public override void OnAwake()
        {
            animator = gameObject.GetComponentInChildren<Animator>();
            role = gameObject.GetComponent<Role>();
        }

        public override void OnStart()
        {
            startTime = Time.time;
            role.attacking = true;

            if (target.Value == null)
            {
                attackConditionSuccess = false;
                return;
            }

            switch (attackCondition.condition)
            {
                case eAttackCondition.None:
                    {
                        attackConditionSuccess = true;
                    }
                    break;
                case eAttackCondition.Distance:
                    {
                        float dis = Vector3.Distance(transform.position, target.Value.transform.position);
                        if (dis >= attackCondition.conditionMinValue && dis < attackCondition.conditionMaxValue)
                        {
                            attackConditionSuccess = true;
                        }
                        else
                        {
                            attackConditionSuccess = false;
                            return;
                        }
                    }
                    break;
                case eAttackCondition.HpPercentage:
                    {
                        Role selfRole = transform.GetComponent<Role>();
                        float hpPerc = selfRole.mData.HP_Final / selfRole.mData.MaxHP_Final;
                        if (hpPerc >= attackCondition.conditionMinValue && hpPerc < attackCondition.conditionMaxValue)
                        {
                            attackConditionSuccess = true;
                        }
                        else
                        {
                            attackConditionSuccess = false;
                            return;
                        }
                    }
                    break;
            }

            // 随机攻击
            if (randomAttack)
            {
                int randomVal = Random.Range(0, randomAttackTriggerNames.Count);
                animator.SetBool(randomAttackTriggerNames[randomVal], true);
            }
            else
            {
                animator.SetBool(attackTriggerName.Value, true);
            }

            // 朝向目标攻击
            Vector3 targetPos = target.Value.position;
            targetPos.y = transform.position.y;
            transform.LookAt(targetPos);

            //// 缓慢旋转
            //Vector3 dir = target.Value.position - transform.position;
            //dir.Normalize();
            //transform.rotation = Quaternion.Lerp(transform.rotation, Quaternion.LookRotation(dir), 60 * Time.deltaTime);
        }


        public override TaskStatus OnUpdate()
        {
            if (attackConditionSuccess == false)
            {
                if (failAutoNext)
                {
                    return TaskStatus.Success;
                }
                else
                {
                    return TaskStatus.Failure;
                }
            }

            if (startTime + waitTime.Value < Time.time)
            {
                return TaskStatus.Success;
            }

            return TaskStatus.Running;
        }

        /// <summary>
        /// 结束
        /// </summary>
        public override void OnEnd()
        {
            role.attacking = false;
        }
    }

    /// <summary>
    /// 攻击条件
    /// </summary>
    public enum eAttackCondition
    {
        /// <summary>
        /// 无
        /// </summary>
        None = 0,

        /// <summary>
        /// 距离(实际距离)
        /// </summary>
        Distance = 1,

        /// <summary>
        /// 血量百分百(0~1)
        /// </summary>
        HpPercentage = 2,
    }

    /// <summary>
    /// 攻击条件
    /// </summary>
    public class AttackCondition
    {
        [BehaviorDesigner.Runtime.Tasks.Tooltip("攻击条件类型")]
        public eAttackCondition condition = eAttackCondition.None;

        [BehaviorDesigner.Runtime.Tasks.Tooltip("攻击条件最小值")]
        public float conditionMinValue = 0;

        [BehaviorDesigner.Runtime.Tasks.Tooltip("攻击条件最大值")]
        public float conditionMaxValue = 0;
    }
}