using System;
using System.Collections.Generic;

namespace AlicizaX.UI
{
    /// <summary>
    /// UGList 基类
    /// 提供简化的列表操作接口，封装 RecyclerView 和 Adapter 的交互
    /// </summary>
    /// <typeparam name="TData">数据类型</typeparam>
    /// <typeparam name="TAdapter">适配器类型</typeparam>
    public abstract class UGListBase<TData, TAdapter> where TAdapter : Adapter<TData> where TData : ISimpleViewData
    {
        protected readonly RecyclerView _recyclerView;

        protected readonly TAdapter _adapter;

        /// <summary>
        /// 获取关联的 RecyclerView 实例
        /// </summary>
        public RecyclerView RecyclerView => _recyclerView;

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="recyclerView">RecyclerView 实例</param>
        /// <param name="adapter">适配器实例</param>
        /// <param name="onItemClick">列表项点击回调</param>
        public UGListBase(RecyclerView recyclerView, TAdapter adapter, Action<TData> onItemClick = null)
        {
            _recyclerView = recyclerView;
            _adapter = adapter;

            if (_recyclerView != null)
            {
                _recyclerView.SetAdapter(_adapter);
            }

            if (onItemClick != null)
            {
                _adapter.SetOnItemClick(onItemClick);
            }
        }

        /// <summary>
        /// 获取适配器实例
        /// </summary>
        public TAdapter Adapter => _adapter;

        private List<TData> _datas;

        /// <summary>
        /// 获取或设置数据列表
        /// 设置时会自动更新适配器
        /// </summary>
        public List<TData> Data
        {
            get => _datas;
            set
            {
                _datas = value;
                _adapter.SetList(_datas);
            }
        }
    }

    /// <summary>
    /// 通用列表类
    /// 用于显示简单的单一类型数据列表
    /// </summary>
    /// <typeparam name="TData">数据类型，必须实现 ISimpleViewData</typeparam>
    public class UGList<TData> : UGListBase<TData, Adapter<TData>> where TData : ISimpleViewData
    {
        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="recyclerView">RecyclerView 实例</param>
        /// <param name="onItemClick">列表项点击回调</param>
        public UGList(RecyclerView recyclerView, Action<TData> onItemClick = null)
            : base(recyclerView, new Adapter<TData>(recyclerView), onItemClick)
        {
        }
    }

    /// <summary>
    /// 分组列表类
    /// 用于显示带有分组头的列表数据
    /// </summary>
    /// <typeparam name="TData">数据类型，必须实现 IGroupViewData</typeparam>
    public class UGGroupList<TData> : UGListBase<TData, GroupAdapter<TData>> where TData : class, IGroupViewData, new()
    {
        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="recyclerView">RecyclerView 实例</param>
        /// <param name="groupViewName">分组头视图名称</param>
        /// <param name="onItemClick">列表项点击回调</param>
        public UGGroupList(RecyclerView recyclerView, string groupViewName, Action<TData> onItemClick = null)
            : base(recyclerView, new GroupAdapter<TData>(recyclerView, groupViewName), onItemClick)
        {
        }
    }

    /// <summary>
    /// 循环列表类
    /// 用于实现无限循环滚动的列表
    /// </summary>
    /// <typeparam name="TData">数据类型，必须实现 ISimpleViewData</typeparam>
    public class UGLoopList<TData> : UGListBase<TData, LoopAdapter<TData>> where TData : ISimpleViewData, new()
    {
        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="recyclerView">RecyclerView 实例</param>
        /// <param name="onItemClick">列表项点击回调</param>
        public UGLoopList(RecyclerView recyclerView, Action<TData> onItemClick = null)
            : base(recyclerView, new LoopAdapter<TData>(recyclerView), onItemClick)
        {
        }
    }

    /// <summary>
    /// 混合列表类
    /// 用于显示多种不同类型的列表项
    /// </summary>
    /// <typeparam name="TData">数据类型，必须实现 IMixedViewData</typeparam>
    public class UGMixedList<TData> : UGListBase<TData, MixedAdapter<TData>> where TData : IMixedViewData
    {
        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="recyclerView">RecyclerView 实例</param>
        /// <param name="onItemClick">列表项点击回调</param>
        public UGMixedList(RecyclerView recyclerView, Action<TData> onItemClick = null)
            : base(recyclerView, new MixedAdapter<TData>(recyclerView), onItemClick)
        {
        }
    }

    /// <summary>
    /// UGList 创建辅助类
    /// 提供便捷的静态方法来创建各种类型的列表
    /// </summary>
    public static class UGListCreateHelper
    {
        /// <summary>
        /// 创建通用列表
        /// </summary>
        public static UGList<TData> Create<TData>(RecyclerView recyclerView, Action<TData> onItemClick = null) where TData : ISimpleViewData
            => new UGList<TData>(recyclerView, onItemClick);

        /// <summary>
        /// 创建分组列表
        /// </summary>
        public static UGGroupList<TData> CreateGroup<TData>(RecyclerView recyclerView, string groupViewName, Action<TData> onItemClick = null) where TData : class, IGroupViewData, new()
            => new UGGroupList<TData>(recyclerView, groupViewName, onItemClick);

        /// <summary>
        /// 创建循环列表
        /// </summary>
        public static UGLoopList<TData> CreateLoop<TData>(RecyclerView recyclerView, Action<TData> onItemClick = null) where TData : ISimpleViewData, new()
            => new UGLoopList<TData>(recyclerView, onItemClick);

        /// <summary>
        /// 创建混合列表
        /// </summary>
        public static UGMixedList<TData> CreateMixed<TData>(RecyclerView recyclerView, Action<TData> onItemClick = null) where TData : IMixedViewData
            => new UGMixedList<TData>(recyclerView, onItemClick);
    }

}