using AngleSharp.Dom;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Http.Headers;
using System.Security.Policy;
using System.Text;
using System.Threading.Tasks;

namespace WIDESEAWCS_Core.Helper
{
    public class HttpHelper
    {
        public static async Task<string> GetAsync(string serviceAddress, Dictionary<string, object> parameters, string contentType = "application/json", Dictionary<string, string>? headers = null)
        {
            try
            {
                string result = string.Empty;
                using HttpClient httpClient = new HttpClient();
                httpClient.Timeout = new TimeSpan(0, 0, 60);
                // 将参数拼接到URL中
                string queryString = string.Join("&", parameters.Select(x => $"{x.Key}={x.Value}"));
                serviceAddress += "?" + queryString;

                if (headers != null)
                {
                    foreach (var header in headers)
                        httpClient.DefaultRequestHeaders.Add(header.Key, header.Value);
                }

                result = await httpClient.GetAsync(serviceAddress).Result.Content.ReadAsStringAsync();
                return result;
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }
            return null;
        }


        // 用于追踪每个请求的调用次数和最后请求时间。
        private static readonly Dictionary<string, (int Count, DateTime LastRequestTime)> requestTracker = new();

        public static async Task<string> PostAsync(string serviceAddress, string requestJson = null, string contentType = "application/json", Dictionary<string, string>? headers = null)
        {
            try
            {
                if (serviceAddress.Contains("http://c24-cellmi3:12020"))
                {
                    // 将 JSON 字符串转换为字典
                    var parameters = JsonConvert.DeserializeObject<Dictionary<string, object>>(requestJson);

                    // 创建一个新的字典，排除 RequestTime 和 SessionId
                    var filteredParameters = parameters.Where(p => p.Key != "RequestTime" && p.Key != "SessionId").ToDictionary(p => p.Key, p => p.Value);

                    string requestKey = $"{serviceAddress}:{JsonConvert.SerializeObject(filteredParameters)}";

                    // 检查请求次数和时间限制
                    if (requestTracker.TryGetValue(requestKey, out var requestInfo))
                    {
                        if (requestInfo.Count >= 5 && DateTime.Now < requestInfo.LastRequestTime.AddMinutes(10))
                        {
                            // 如果请求次数超过限制且未超过10分钟，抛出异常
                            throw new InvalidOperationException("请求次数已达到限制，请稍后再试。");
                        }
                    }

                    // 更新请求跟踪信息
                    if (requestTracker.ContainsKey(requestKey))
                    {
                        requestTracker[requestKey] = (requestInfo.Count + 1, DateTime.Now);
                    }
                    else
                    {
                        requestTracker[requestKey] = (1, DateTime.Now);
                    }
                }
                string result = string.Empty;
                using (HttpContent httpContent = new StringContent(requestJson))
                {
                    httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
                    using HttpClient httpClient = new HttpClient();
                    httpClient.Timeout = new TimeSpan(0, 0, 60);

                    if (headers != null)
                    {
                        foreach (var header in headers)
                            httpClient.DefaultRequestHeaders.Add(header.Key, header.Value);
                    }
                    result = await httpClient.PostAsync(serviceAddress, httpContent).Result.Content.ReadAsStringAsync();
                }
                return result;
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }
            return null;
        }

        public static string Get(string serviceAddress, string contentType = "application/json", Dictionary<string, string>? headers = null)
        {
            try
            {
                string result = string.Empty;
                using HttpClient httpClient = new HttpClient();
                httpClient.Timeout = new TimeSpan(0, 0, 60);

                if (headers != null)
                {
                    foreach (var header in headers)
                        httpClient.DefaultRequestHeaders.Add(header.Key, header.Value);
                }

                result = httpClient.GetStringAsync(serviceAddress).Result;
                return result;
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }
            return null;
        }

        public static string Post(string serviceAddress, string requestJson = null, string contentType = "application/json", Dictionary<string, string>? headers = null)
        {
            try
            {
                string result = string.Empty;
                using (HttpContent httpContent = new StringContent(requestJson))
                {
                    httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
                    using HttpClient httpClient = new HttpClient();
                    httpClient.Timeout = new TimeSpan(0, 0, 60);

                    if (headers != null)
                    {
                        foreach (var header in headers)
                            httpClient.DefaultRequestHeaders.Add(header.Key, header.Value);
                    }

                    //foreach (var header in headers)
                    //    httpClient.DefaultRequestHeaders.Add(header.Key, header.Value);

                    result = httpClient.PostAsync(serviceAddress, httpContent).Result.Content.ReadAsStringAsync().Result;
                }
                return result;
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }
            return null;
        }
    }
}