using System;
using System.Collections.Generic;

namespace BITKit
{
    #region 物品枚举

    public enum ItemQuality
    {
        /// <summary>
        /// 常见的
        /// </summary>
        Common,

        /// <summary>
        /// 罕见的
        /// </summary>
        Uncommon,

        /// <summary>
        /// 稀有的
        /// </summary>
        Rare,

        /// <summary>
        /// 史诗的
        /// </summary>
        Epic,

        /// <summary>
        /// 传奇的
        /// </summary>
        Legendary,

        /// <summary>
        /// 神话的
        /// </summary>
        Mythical,

        /// <summary>
        /// 开发者
        /// </summary>
        Develop,
    }

    #endregion

    #region 物品接口

    /// <summary>
    /// 物品属性
    /// </summary>
    public interface IScriptableItemProperty
    {
    }
    /// <summary>
    /// 控制器(分)类
    /// </summary>
    public interface IScriptableControllerClass
    {
        
    }
    /// <summary>
    /// 基础物品
    /// </summary>
    public interface IScriptableItem
    {
        /// <summary>
        /// 唯一Id
        /// </summary>
        int Id { get; }

        /// <summary>
        /// 物品名，一般用于查找物品的主键
        /// </summary>
        string Name { get; }

        /// <summary>
        /// 物品描述
        /// </summary>
        string Description { get; }

        /// <summary>
        /// 最大堆叠数量
        /// </summary>
        public int MaxStack { get; }

        /// <summary>
        /// 物品品质
        /// </summary>
        ItemQuality Quality { get; }

        /// <summary>
        /// 属性
        /// </summary>
        IReadOnlyDictionary<Type, IScriptableItemProperty> Properties { get; }
        
        /// <summary>
        /// 控制器类
        /// </summary>
        IScriptableControllerClass ControllerClass { get; }

        /// <summary>
        /// 价值
        /// </summary>
        /// <returns></returns>
        int Value => 10;
        /// <summary>
        /// 创建运行时物品
        /// </summary>
        /// <returns></returns>
        IRuntimeItem CreateRuntimeItem();
    }

    public interface IRuntimeItem : ICloneable
    {
        /// <summary>
        /// 运行时Id
        /// </summary>
        public int Id { get; set; }

        /// <summary>
        /// 配置Id
        /// </summary>
        public int ScriptableId { get; }

        /// <summary>
        /// 数量
        /// </summary>
        public int Amount { get; set; }

        /// <summary>
        /// 运行时属性
        /// </summary>
        IDictionary<Type, IScriptableItemProperty> RuntimeProperties { get; }

        /// <summary>
        /// 当运行时属性改变时
        /// </summary>
        // ReSharper disable once EventNeverInvoked.Global
        event Action<IRuntimeItem> OnRuntimePropertiesChanged;
    }

    #endregion

    #region 物品实现

    /// <summary>
    /// 被托管的物品
    /// </summary>
    [Serializable]
    public struct RuntimeItem : IRuntimeItem
    {
        public static RuntimeItem Create()
        {
            var item = new RuntimeItem()
            {
                Id  = new Random().Next(),
                RuntimeProperties =
                new Dictionary<Type, IScriptableItemProperty>()
            };
            return item;
        }
        public int Id { get; set; }
        public int ScriptableId { get; set; }
        public int Amount { get; set; }

        public IDictionary<Type, IScriptableItemProperty> RuntimeProperties { get; set; } 

        public event Action<IRuntimeItem> OnRuntimePropertiesChanged;

        object ICloneable.Clone()
        {
            return new RuntimeItem
            {
                Id = new Random().Next(),
                ScriptableId = ScriptableId,
                Amount = Amount,
                RuntimeProperties = new Dictionary<Type, IScriptableItemProperty>(RuntimeProperties),
                OnRuntimePropertiesChanged = null,
            };
        }
    }

    #endregion
}