using System.Collections.Generic;
namespace Gameplay.Unit.Data
{
    public class UnitContainer
    {
        private List<GameUnit> _unitList = new List<GameUnit>();
        private Dictionary<uint, GameUnit> _unitDict = new Dictionary<uint, GameUnit>();

        public List<GameUnit> unitList
        {
            get
            {
                return _unitList;
            }
        }

        public int count { get; private set; }

        public void Add(GameUnit unit)
        {
            var guid = unit.GetID();
            if (_unitDict.ContainsKey(guid))
            {
                DebugUtil.LogError("已存在相同guid的单位:{0}", guid);
                return;
            }
            _unitDict.Add(guid, unit);
            _unitList.Add(unit);
            count++;
        }
        
        public void Remove(GameUnit unit)
        {
            var guid = unit.GetID();
            if (!_unitDict.ContainsKey(guid))
            {
                DebugUtil.LogError("不存在相同guid的单位:{0}", guid);
                return;
            }
            _unitDict.Remove(guid);
            _unitList.Remove(unit);
            count--;
        }
        
        public void RemoveAt(int index)
        {
            if (index < 0 || index >= _unitList.Count) {
                DebugUtil.LogError("不存在相同index的单位:{0}", index);
                return;
            }
            var unit = _unitList[index];
            _unitDict.Remove(unit.GetID());
            _unitList.RemoveAt(index);
            count--;
        }

        public bool Contains(uint guid)
        {
            return _unitDict.ContainsKey(guid);
        }

        public GameUnit Search(uint guid)
        {
            if (_unitDict.TryGetValue(guid, out var unit))
            {
                return unit;
            }
            DebugUtil.LogError("不存在指定guid的单位:{0}", guid);
            return null;
        }

        public GameUnit GetByIndex(int index)
        {
            if (index < 0 || index >= _unitList.Count) {
                DebugUtil.LogError("不存在指定index的单位:{0}", index);
                return null;
            }
            return _unitList[index];
        }
    }
}