using Newtonsoft.Json;
using System;
using System.Collections.Generic;

namespace _29WxOrderWpf.Ctrls.Statistics.Models
{
	/// <summary>
	/// 店铺营收统计 - 查询参数
	/// </summary>
	public class ShopRevenueStatisticsQuery
	{
		/// <summary>开始时间</summary>
		public DateTime StartDate { get; set; }

		/// <summary>结束时间</summary>
		public DateTime EndDate { get; set; }

		/// <summary>店铺 app_key（A.app_key），空/Null 表示全部店铺</summary>
		public string ShopKey { get; set; }
	}

	/// <summary>
	/// 店铺营收统计 - 接口返回的原始明细行。
	/// 对应接口返回字段：
	///   A.app_key, B.create_time, B.order_id, B.status,
	///   B.product_price, B.order_price, B.purchase_price, B.freight,
	///   B.predict_commission_fee, B.commission_amount, B.discounted_price, B.profit,
	///   B.purchase_status, c.refund_status
	/// 其中 A 为店铺表，B 为订单表，c 为售后/退款表。
	/// 金额字段单位均为“分”，展示时需除以 100。
	/// </summary>
	public class ShopRevenueStatisticsRow
	{
		/// <summary>A.app_key 店铺 app_key</summary>
		[JsonProperty("app_key")]
		public string AppKey { get; set; }

		/// <summary>B.create_time 订单创建时间（接口为秒级时间戳，由 UnixDateTimeConverter 转换为 DateTime）</summary>
		[JsonProperty("create_time")]
		[JsonConverter(typeof(UnixDateTimeConverter))]
		public DateTime CreateTime { get; set; }

		/// <summary>B.order_id 订单号</summary>
		[JsonProperty("order_id")]
		public string OrderId { get; set; }

		/// <summary>B.status 订单状态：10-待付款；20-待发货；21-部分发货；30-待收货；100-完成；200-全部商品售后之后订单取消；250-未付款用户主动取消或超时未付款订单自动取消</summary>
		public int Status { get; set; }

		/// <summary>B.product_price 商品总价（分）</summary>
		[JsonProperty("product_price")]
		public int ProductPrice { get; set; }

		/// <summary>B.order_price 订单金额（分），计算公式：order_price = original_order_price - discounted_price - deduction_price - change_down_price</summary>
		[JsonProperty("order_price")]
		public int OrderPrice { get; set; }

		/// <summary>B.purchase_price 采购价（分）</summary>
		[JsonProperty("purchase_price")]
		public int PurchasePrice { get; set; }

		/// <summary>B.freight 运费（分）</summary>
		public int Freight { get; set; }

		/// <summary>B.predict_commission_fee 平台服务费（微信小店：预计技术服务费）（分）</summary>
		[JsonProperty("predict_commission_fee")]
		public int PredictCommissionFee { get; set; }

		/// <summary>B.commission_amount 达人佣金（微信小店：分账金额）（分）</summary>
		[JsonProperty("commission_amount")]
		public int CommissionAmount { get; set; }

		/// <summary>B.discounted_price 优惠券优惠金额（分）</summary>
		[JsonProperty("discounted_price")]
		public int DiscountedPrice { get; set; }

		/// <summary>B.profit 利润（分），计算公式：实付金额 - 采购价 - 平台服务费 - 达人佣金（采购价、达人佣金为空值则按 0）</summary>
		public int Profit { get; set; }

		/// <summary>B.purchase_status 采购状态：0-未采购；1-采购（默认值 0，推送仓库时修改为 1）</summary>
		[JsonProperty("purchase_status")]
		public int PurchaseStatus { get; set; }

		/// <summary>c.refund_status 退款状态（4/11 视为已退款，与 RevenueStatisticsAggregator.IsRefunded 保持一致）</summary>
		[JsonProperty("refund_status")]
		public int RefundStatus { get; set; }

		/// <summary>店铺名称（由 app_key 关联店铺表得到，展示用，非接口原始字段）</summary>
		[JsonProperty("shop_name")]
		public string ShopName { get; set; }

	}

	/// <summary>
	/// 顶部汇总卡片数据（金额单位：元）
	/// </summary>
	public class ShopRevenueSummary
	{
		/// <summary>销售额（最终有效销售额）</summary>
		public decimal SalesAmount { get; set; }

		/// <summary>有效订单数（已扣除退款订单）</summary>
		public int ValidOrderCount { get; set; }

		/// <summary>利润（实际利润）</summary>
		public decimal Profit { get; set; }

		/// <summary>退款金额（统计期间退款）</summary>
		public decimal RefundAmount { get; set; }

		/// <summary>商品销量（有效销量）</summary>
		public int ProductSalesVolume { get; set; }

		/// <summary>客户数（成交客户）</summary>
		public int CustomerCount { get; set; }

		/// <summary>客单价（平均每单金额）</summary>
		public decimal AvgOrderAmount { get; set; }

		/// <summary>退款率（退款订单占比，百分数，如 2.31 表示 2.31%）</summary>
		public decimal RefundRate { get; set; }
	}

	/// <summary>
	/// 销售趋势数据点（金额单位：元）
	/// </summary>
	public class RevenueTrendPoint
	{
		/// <summary>日期</summary>
		public DateTime Date { get; set; }

		/// <summary>日期文本（MM-dd）</summary>
		public string DateText { get { return Date.ToString("MM-dd"); } }

		/// <summary>当日销售额（元）</summary>
		public decimal SalesAmount { get; set; }

		/// <summary>当日有效订单数</summary>
		public int OrderCount { get; set; }
	}

	/// <summary>
	/// 店铺销售占比数据（金额单位：元）
	/// </summary>
	public class ShopSalesProportionItem
	{
		/// <summary>店铺名称</summary>
		public string ShopName { get; set; }

		/// <summary>销售额（元）</summary>
		public decimal SalesAmount { get; set; }

		/// <summary>占比（0~100）</summary>
		public double Percentage { get; set; }
	}

	/// <summary>
	/// 店铺统计表格行（金额单位：元）
	/// </summary>
	public class ShopStatisticsItem
	{
		/// <summary>店铺名称</summary>
		public string ShopName { get; set; }

		/// <summary>订单数</summary>
		public int OrderCount { get; set; }

		/// <summary>销售额（元）</summary>
		public decimal SalesAmount { get; set; }

		/// <summary>利润（元）</summary>
		public decimal Profit { get; set; }

		/// <summary>退款金额（元）</summary>
		public decimal RefundAmount { get; set; }

		/// <summary>客户数</summary>
		public int CustomerCount { get; set; }

		/// <summary>客单价（元）</summary>
		public decimal AvgOrderAmount { get; set; }
	}

	/// <summary>
	/// 统计周期类型：天 / 周 / 月
	/// </summary>
	public enum PeriodStatisticType
	{
		/// <summary>按天统计</summary>
		Day = 0,

		/// <summary>按周统计（周一起始）</summary>
		Week = 1,

		/// <summary>按月统计</summary>
		Month = 2
	}

	/// <summary>
	/// 天/周/月周期统计表格行（金额单位：元）。
	/// 按所选店铺（或全部店铺）统计：天统计每天一行；周统计每周一行；月统计每月一行。
	/// </summary>
	public class ShopPeriodStatisticsItem
	{
		/// <summary>周期开始日期（用于排序）</summary>
		public DateTime PeriodStart { get; set; }

		/// <summary>周期显示文本（天：yyyy-MM-dd；周：yyyy-MM-dd ~ yyyy-MM-dd；月：yyyy-MM）</summary>
		public string Period { get; set; }

		/// <summary>订单数</summary>
		public int OrderCount { get; set; }

		/// <summary>销售额（元）</summary>
		public decimal SalesAmount { get; set; }

		/// <summary>利润（元）</summary>
		public decimal Profit { get; set; }

		/// <summary>退款金额（元）</summary>
		public decimal RefundAmount { get; set; }

		/// <summary>客户数</summary>
		public int CustomerCount { get; set; }

		/// <summary>客单价（元）</summary>
		public decimal AvgOrderAmount { get; set; }
	}

	/// <summary>
	/// 店铺下拉选项
	/// </summary>
	public class ShopOption
	{
		/// <summary>店铺 app_key（A.app_key）</summary>
		public string AppKey { get; set; }

		/// <summary>店铺名称</summary>
		public string ShopName { get; set; }
	}

	/// <summary>
	/// 时间范围下拉选项
	/// </summary>
	public class TimeRangeOption
	{
		/// <summary>显示文本（如：今天、昨天、本周、本月、最近10天、自定义）</summary>
		public string Text { get; set; }

		/// <summary>值（today / yesterday / week / month / last10 / custom）</summary>
		public string Value { get; set; }
	}

	class UnixDateTimeConverter : JsonConverter
	{
		public override bool CanConvert(Type objectType)
		{
			return objectType == typeof(DateTime);
		}

		public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
		{
			// 读取数值（支持 long 和 int 类型）
			if (reader.TokenType == JsonToken.Integer)
			{
				long milliseconds = (long)reader.Value;
				// Unix 纪元：1970-01-01 UTC
				DateTime epoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
				if (milliseconds.ToString().Length == 13)
				{
					return epoch.AddMilliseconds(milliseconds);
				}
				return epoch.AddSeconds(milliseconds);


			}
			// 如果传入的是字符串（如 "1700000000000"），也支持
			else if (reader.TokenType == JsonToken.String)
			{
				if (long.TryParse((string)reader.Value, out long milliseconds))
				{
					DateTime epoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
					if (milliseconds.ToString().Length == 13)
					{
						return epoch.AddMilliseconds(milliseconds);
					}
					return epoch.AddSeconds(milliseconds);
				}
			}
			throw new JsonSerializationException($"无法将 {reader.Value} 转换为 DateTime");
		}


		public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
		{
			// 序列化时转回时间戳
			DateTime epoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
			long milliseconds = (long)((DateTime)value - epoch).TotalMilliseconds;
			writer.WriteValue(milliseconds);
		}
	}
}