using OpenSearch.Client;

namespace Store.Modules.CloudProduct.Dtos
{
	/// <summary>
	/// 用户收藏商品搜索文档：OpenSearch 索引中的收藏模型。
	/// 一条收藏记录 = 用户 + 商品快照（标题/价格/销量/类目）+ 收藏分组，
	/// 文档 Id 固定为 "{user_name}:{goods_id}"（表 uk_user_goods 保证唯一），便于收藏/取消收藏时幂等覆盖与删除。
	/// </summary>
	public class UserFavoritesSearchDocument
	{
		/// <summary>
		/// 文档主键（同时作为 OpenSearch 的 _id）：{user_name}:{goods_id}
		/// </summary>
		[Keyword(Name = "id")]
		public string Id { get; set; } = string.Empty;

		/// <summary>
		/// 收藏记录自增主键（user_goods_favorites.id）
		/// </summary>
		[Number(NumberType.Long, Name = "fav_id")]
		public long FavId { get; set; }

		/// <summary>用户名（收藏归属人，检索时强制过滤）</summary>
		[Keyword(Name = "user_name")]
		public string UserName { get; set; } = string.Empty;

		/// <summary>收藏分组ID（0 表示默认分组）</summary>
		[Number(NumberType.Integer, Name = "group_id")]
		public int GroupId { get; set; }

		/// <summary>收藏分组名（分组ID为0时为默认分组名）</summary>
		[Keyword(Name = "group_name")]
		public string GroupName { get; set; } = string.Empty;

		/// <summary>商品编号</summary>
		[Number(NumberType.Long, Name = "goods_id")]
		public long GoodsId { get; set; }

		/// <summary>平台类型（1 PDD、2 WX）</summary>
		[Number(NumberType.Byte, Name = "platform")]
		public byte Platform { get; set; }

		/// <summary>商品标题，用于分词搜索</summary>
		[Text(Name = "title", Analyzer = "ik_max_word", SearchAnalyzer = "ik_smart")]
		public string Title { get; set; } = string.Empty;

		/// <summary>缩略图</summary>
		[Text(Name = "thumb_url")]
		public string? ThumbUrl { get; set; }

		/// <summary>一级类目ID</summary>
		[Number(NumberType.Integer, Name = "cat_id_1")]
		public int? CatId1 { get; set; }

		/// <summary>二级类目ID</summary>
		[Number(NumberType.Integer, Name = "cat_id_2")]
		public int? CatId2 { get; set; }

		/// <summary>三级类目ID</summary>
		[Number(NumberType.Integer, Name = "cat_id_3")]
		public int? CatId3 { get; set; }

		/// <summary>四级类目ID</summary>
		[Number(NumberType.Integer, Name = "cat_id_4")]
		public int? CatId4 { get; set; }

		/// <summary>最低价快照（分），用于价格区间过滤和按价格排序</summary>
		[Number(NumberType.Long, Name = "min_price")]
		public long? MinPrice { get; set; }

		/// <summary>销量，用于按销量排序</summary>
		[Number(NumberType.Integer, Name = "sold_quantity")]
		public int SoldQuantity { get; set; }

		/// <summary>收藏时间，默认按此字段倒序</summary>
		[Date(Name = "created_at")]
		public DateTime CreatedAt { get; set; }

		/// <summary>
		/// 生成文档主键：{user_name}:{goods_id}
		/// </summary>
		public static string BuildId(string userName, long goodsId) => $"{userName}:{goodsId}";

		public override string ToString() => $"[Id={Id}] User={UserName} Goods={GoodsId} Group={GroupId}({GroupName}) Title={Title} Price={MinPrice} Sold={SoldQuantity}";
	}
}