using System;
using System.Collections;
using System.Collections.Generic;
using Core.State;
using GameLogic.Combat.CombatTool;
using GameLogic.Combat.Hero;
using GameLogic.Combat.Hero.State;
using OfficeOpenXml.FormulaParsing.Excel.Functions.Logical;
using UnityEngine;
using UnityEngine.AI;

public class CombatAIBasic : IDisposable
{
    public StateControl stateControl;
    public NavMeshAgent NavMeshAgent;
    protected CombatHeroEntity _combatHeroEntity;
    protected float _r = 5;

    /// <summary>
    /// 当前聚焦的目标
    /// </summary>
    public CombatHeroEntity currFocusTarget;

    public void Init(CombatHeroEntity combatHeroEntity, NavMeshAgent navMeshAgent)
    {
        _combatHeroEntity = combatHeroEntity;
        stateControl = new StateControl();
        NavMeshAgent = navMeshAgent;
        ProInitState();
    }

    protected void ProInitState()
    {
        stateControl.AddState(CombatHeroStateType.idle, new CombatHeroIdleState(_combatHeroEntity));
        stateControl.AddState(CombatHeroStateType.move, new CombatHeroMoveState(_combatHeroEntity));
        stateControl.AddState(CombatHeroStateType.att, new CombatHeroAttState(_combatHeroEntity));
        stateControl.AddState(CombatHeroStateType.dile, new CombatHeroDieState(_combatHeroEntity));
    }

    public void ChangeState(string name)
    {
        stateControl.ChangeState(name);
    }

    public void Update(float t)
    {
        CombatHeroEntity[] allHero =
            CombatController.currActiveCombat.CombatHeroController.GetHero(!_combatHeroEntity.IsEnemy);
        FindMinDixtance(allHero, out currFocusTarget);
        stateControl.Update(t);
        if (currFocusTarget != null)
        {
            if (!stateControl.CurrStateName.Equals(CombatHeroStateType.move))
            {
                Vector3 nextPos = currFocusTarget.dotPos;
                Vector3 p = nextPos - _combatHeroEntity.dotPos;

                if (p.sqrMagnitude > 0.00001)
                {
                    _combatHeroEntity.combatHeroGameObject.rotation = Quaternion.Lerp(
                        _combatHeroEntity.combatHeroGameObject.rotation, Quaternion.LookRotation(p.normalized), 0.5f);
                }
            }
        }
    }

    protected void FindMinDixtance(CombatHeroEntity[] allHero, out CombatHeroEntity minDistanceHero)
    {
        minDistanceHero = null;
        if (allHero == null)
        {
            return;
        }

        float minDistance = float.MaxValue;
        for (int i = 0; i < allHero.Length; i++)
        {
            CombatHeroEntity hero = allHero[i];
            float distance = Vector3.Distance(hero.combatHeroGameObject.position,
                _combatHeroEntity.combatHeroGameObject.position);
            if (distance < minDistance)
            {
                minDistance = distance;
                minDistanceHero = hero;
            }
        }
    }

    public void Dispose()
    {
        // NavMeshAgent.enabled = false;
        _combatHeroEntity = null;
        stateControl.Dispose();
        stateControl = null;
    }
}