using System;
using System.Net;
using System.Text;

namespace WxOrder.Framework.Helpers
{
	/// <summary>
	/// 拼多多API请求类
	/// </summary>
	public class PddApi
	{
		private const string BASE_URL = "https://mobile.yangkeduo.com";

		/// <summary>
		/// 获取发票详情页
		/// </summary>
		/// <param name="orderSn">订单号</param>
		/// <param name="cookie">用户Cookie</param>
		/// <returns>返回页面HTML内容</returns>
		public static string GetReturnCompensation(string orderSn, string cookie)
		{
			string url = $"{BASE_URL}/transac_return_compensation.html?_t_timestamp=transac_modify_invoice&order_sn={orderSn}";

			var item = new HttpItem
			{
				URL = url,
				Method = MethodType.Get,
				Timeout = 30000,
				ReadWriteTimeout = 30000,
				KeepAlive = true,
				Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7",
				ContentType = "text/html",
				UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36",
				Cookie = cookie,
				Referer = BASE_URL,
				Allowautoredirect = true,
				Encoding = Encoding.UTF8,
				ResultType = ResultType.String
			};

			// 添加自定义Header
			item.Header.Add("sec-ch-ua", "\"Not)A;Brand\";v=\"8\", \"Chromium\";v=\"138\"");
			item.Header.Add("sec-ch-ua-mobile", "?0");
			item.Header.Add("sec-ch-ua-platform", "\"Windows\"");
			item.Header.Add("upgrade-insecure-requests", "1");
			item.Header.Add("sec-fetch-site", "none");
			item.Header.Add("sec-fetch-mode", "navigate");
			item.Header.Add("sec-fetch-user", "?1");
			item.Header.Add("sec-fetch-dest", "document");
			item.Header.Add("priority", "u=0, i");
			item.ProxyIp = "127.0.0.1:8080";
			var result = new HttpHelper().GetHtml(item);

			if (result.StatusCode != HttpStatusCode.OK)
			{
				throw new Exception($"请求失败: {result.StatusDescription}, 状态码: {result.StatusCode}");
			}

			return result.Html;
		}

		/// <summary>
		/// 异步获取退货补偿页面信息
		/// </summary>
		/// <param name="orderSn">订单号</param>
		/// <param name="cookie">用户Cookie</param>
		/// <returns>返回页面HTML内容</returns>
		public static async System.Threading.Tasks.Task<string> GetReturnCompensationAsync(string orderSn, string cookie)
		{
			return await System.Threading.Tasks.Task.Run(() => GetReturnCompensation(orderSn, cookie));
		}

		/// <summary>
		/// 获取退货补偿页面信息（带完整Cookie字符串）
		/// </summary>
		/// <param name="orderSn">订单号</param>
		/// <param name="accessToken">PDD访问令牌</param>
		/// <param name="userId">用户ID</param>
		/// <param name="userUin">用户UIN</param>
		/// <param name="extraCookies">额外Cookie键值对</param>
		/// <returns>返回页面HTML内容</returns>
		public static string GetReturnCompensationWithCookies(
			string orderSn,
			string accessToken,
			string userId,
			string userUin,
			System.Collections.Generic.Dictionary<string, string> extraCookies = null)
		{
			// 构建Cookie字符串
			var cookieBuilder = new StringBuilder();
			cookieBuilder.Append($"PDDAccessToken={accessToken}; ");
			cookieBuilder.Append($"pdd_user_id={userId}; ");
			cookieBuilder.Append($"pdd_user_uin={userUin}; ");

			// 添加额外Cookie
			if (extraCookies != null)
			{
				foreach (var kv in extraCookies)
				{
					cookieBuilder.Append($"{kv.Key}={kv.Value}; ");
				}
			}

			// 添加一些常用的固定Cookie
			cookieBuilder.Append("api_uid=CiNLVGqFh3IfyACAene3Ag==; ");
			cookieBuilder.Append("webp=1; ");
			cookieBuilder.Append("dilx=3EDqgJtFtp4E9OYvXLozM; ");

			string cookie = cookieBuilder.ToString().TrimEnd(' ', ';');

			return GetReturnCompensation(orderSn, cookie);
		}

		/// <summary>
		/// 构建完整的拼多多请求Cookie
		/// </summary>
		/// <param name="cookies">Cookie键值对</param>
		/// <returns>Cookie字符串</returns>
		public static string BuildCookieString(System.Collections.Generic.Dictionary<string, string> cookies)
		{
			if (cookies == null || cookies.Count == 0)
				return string.Empty;

			var builder = new StringBuilder();
			foreach (var kv in cookies)
			{
				builder.Append($"{kv.Key}={kv.Value}; ");
			}
			return builder.ToString().TrimEnd(' ', ';');
		}

		/// <summary>
		/// 通用拼多多请求方法
		/// </summary>
		/// <param name="path">请求路径</param>
		/// <param name="queryParams">查询参数</param>
		/// <param name="cookie">Cookie字符串</param>
		/// <param name="method">请求方法</param>
		/// <param name="postData">POST数据</param>
		/// <returns>返回结果</returns>
		public static string Request(
			string path,
			System.Collections.Generic.Dictionary<string, string> queryParams = null,
			string cookie = null,
			MethodType method = MethodType.Get,
			string postData = null)
		{
			// 构建完整URL
			var urlBuilder = new StringBuilder(BASE_URL);
			urlBuilder.Append(path);

			if (queryParams != null && queryParams.Count > 0)
			{
				urlBuilder.Append('?');
				int index = 0;
				foreach (var kv in queryParams)
				{
					if (index > 0) urlBuilder.Append('&');
					urlBuilder.Append($"{Uri.EscapeDataString(kv.Key)}={Uri.EscapeDataString(kv.Value)}");
					index++;
				}
			}

			var item = new HttpItem
			{
				URL = urlBuilder.ToString(),
				Method = method,
				Timeout = 30000,
				ReadWriteTimeout = 30000,
				KeepAlive = true,
				Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7",
				ContentType = "application/x-www-form-urlencoded",
				UserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36",
				Cookie = cookie,
				Referer = BASE_URL,
				Allowautoredirect = true,
				Encoding = Encoding.UTF8,
				ResultType = ResultType.String,
				Postdata = postData
			};

			// 添加安全相关Header
			item.Header.Add("sec-ch-ua", "\"Not)A;Brand\";v=\"8\", \"Chromium\";v=\"138\"");
			item.Header.Add("sec-ch-ua-mobile", "?0");
			item.Header.Add("sec-ch-ua-platform", "\"Windows\"");
			item.Header.Add("upgrade-insecure-requests", "1");
			item.Header.Add("sec-fetch-site", "none");
			item.Header.Add("sec-fetch-mode", "navigate");
			item.Header.Add("sec-fetch-dest", "document");

			var result = new HttpHelper().GetHtml(item);

			if (result.StatusCode != HttpStatusCode.OK)
			{
				throw new Exception($"请求失败: {result.StatusDescription}, 状态码: {result.StatusCode}");
			}

			return result.Html;
		}
	}

	/// <summary>
	/// 拼多多Cookie构建帮助类
	/// </summary>
	public static class PddCookieHelper
	{
		/// <summary>
		/// 从各个Cookie片段构建完整Cookie
		/// </summary>
		public static string BuildCookie(PddCookieInfo info)
		{
			var builder = new StringBuilder();

			if (!string.IsNullOrEmpty(info.ApiUid))
				builder.Append($"api_uid={info.ApiUid}; ");
			if (!string.IsNullOrEmpty(info.NanoFp))
				builder.Append($"_nano_fp={info.NanoFp}; ");
			if (!string.IsNullOrEmpty(info.AccessToken))
				builder.Append($"PDDAccessToken={info.AccessToken}; ");
			if (!string.IsNullOrEmpty(info.UserId))
				builder.Append($"pdd_user_id={info.UserId}; ");
			if (!string.IsNullOrEmpty(info.UserUin))
				builder.Append($"pdd_user_uin={info.UserUin}; ");
			if (!string.IsNullOrEmpty(info.PddVds))
				builder.Append($"pdd_vds={info.PddVds}; ");

			// 添加固定值
			builder.Append("webp=1; ");
			builder.Append("dilx=3EDqgJtFtp4E9OYvXLozM; ");

			return builder.ToString().TrimEnd(' ', ';');
		}
	}

	/// <summary>
	/// 拼多多Cookie信息类
	/// </summary>
	public class PddCookieInfo
	{
		public string ApiUid { get; set; } = "CiNLVGqFh3IfyACAene3Ag==";
		public string NanoFp { get; set; } = "XpmJnqgqnpCynqEYnC_vqOqYD6xToHisZXFzP~Qy";
		public string AccessToken { get; set; }
		public string UserId { get; set; }
		public string UserUin { get; set; }
		public string PddVds { get; set; }
		public string Jrpl { get; set; } = "m4Tc1seqEgg0YoYo7U4GeUxzylfpG8W7";
		public string Njrpl { get; set; } = "m4Tc1seqEgg0YoYo7U4GeUxzylfpG8W7";
	}
}