using System.Collections.Generic;
using System.Linq;

namespace ET
{
    public class StoreComponentSystemDestroySystem: DestroySystem<StoreComponent>
    {
        public override void Destroy(StoreComponent self)
        {
        }
    }

    [FriendClass(typeof (Item))]
    public static class StoreComponentSystem
    {
        public static void Add(this StoreComponent self, int configId, long amount, long id = 0, bool bUpdateTime = false)
        {
            var config = AllItemConfigCategory.Instance.Get(configId);
            if (config.SuperpositionMax > 1)
            {
                foreach (var v in self.Children.Values)
                {
                    var tempItem = (Item) v;
                    if (tempItem.ConfigId == configId)
                    {
                        tempItem.Amount += amount;
                        return;
                    }
                }

                Item item;
                if (id == 0)
                {
                    item = self.AddChild<Item>();
                }
                else
                {
                    item = self.AddChildWithId<Item>(id);
                }

                item.Amount = amount;
                item.ConfigId = configId;
                if (bUpdateTime)
                {
                    item.CreateTime = TimeHelper.ServerUnix();
                }
            }
            else
            {
                for (int i = 0; i < amount; i++)
                {
                    Item item;
                    if (id == 0)
                    {
                        item = self.AddChild<Item>();
                    }
                    else
                    {
                        item = self.AddChildWithId<Item>(id);
                    }

                    item.Amount = 1;
                    item.ConfigId = configId;
                    if (bUpdateTime)
                    {
                        item.CreateTime = TimeHelper.ServerUnix();
                    }
                }
            }
        }

        public static long GetItemNum(this StoreComponent self, int configId)
        {
            var config = AllItemConfigCategory.Instance.Get(configId);
            if (config.SuperpositionMax > 1)
            {
                foreach (var v in self.Children.Values)
                {
                    var item = (Item) v;
                    if (item.ConfigId == configId)
                    {
                        return item.Amount;
                    }
                }
            }
            else
            {
                long num = 0;
                foreach (var v in self.Children.Values)
                {
                    if (((Item) v).Config == config)
                    {
                        num++;
                    }

                    return num;
                }
            }

            return 0;
        }

        public static bool Remove(this StoreComponent self, int configId, int amount)
        {
            if (GetItemNum(self, configId) < amount)
            {
                return false;
            }

            var config = AllItemConfigCategory.Instance.Get(configId);
            if (config.SuperpositionMax > 1)
            {
                foreach (var v in self.Children.Values)
                {
                    var item = (Item) v;
                    if (item.ConfigId == configId)
                    {
                        item.Amount -= amount;
                        if (item.Amount <= 0)
                        {
                            item.Dispose();
                        }

                        return true;
                    }
                }
            }
            else
            {
                List<Item> removeList = new List<Item>();
                foreach (var v in self.Children)
                {
                    var item = (Item) v.Value;
                    if (item.ConfigId == configId)
                    {
                        removeList.Add(item);
                        if (removeList.Count == amount)
                        {
                            break;
                        }
                    }
                }

                foreach (var v in removeList)
                {
                    self.RemoveChildWithId(v.Id);
                }
            }

            return true;
        }

        /// <summary>
        /// 获得仓库内指定类型(可选子类型)的所有道具
        /// </summary>
        /// <param name="self"></param>
        /// <param name="mainType">AllItem表内的关联表ID</param>
        /// <param name="subType">关联表对应的子类型</param>
        /// <returns></returns>
        public static List<Item> GetItemsWithType(this StoreComponent self, int mainType, int subType = -1)
        {
            if (mainType == 0) return null;
            var result = new List<Item>();
            foreach (var v in self.Children.Values)
            {
                var item = (Item) v;
                var config = AllItemConfigCategory.Instance.Get(item.ConfigId);
                if (config.RelatedTable != mainType) continue;
                if (subType == -1)
                {
                    result.Add(item);
                }
                else
                {
                    switch (mainType)
                    {
                        case 1:
                        {
                            MaterialConfig materialConfig = MaterialConfigCategory.Instance.Get(config.RelatedId);
                            if (materialConfig == null) continue;
                            var types = materialConfig.Type.ToList();
                            if (types.Contains(subType))
                            {
                                result.Add(item);
                            }
                        }
                            break;
                    }
                }
            }

            return result;
        }

        public static bool IsEnoughItem(this StoreComponent self, Dictionary<int, int> itemDic)
        {
            foreach (var pair in itemDic)
            {
                if (self.GetItemNum(pair.Key) < pair.Value)
                {
                    return false;
                }
            }

            return true;
        }

        public static bool IsEnoughItem(this StoreComponent self, int configId, int amount)
        {
            if (self.GetItemNum(configId) < amount)
            {
                return false;
            }

            return true;
        }
    }
}