using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using ConsoleHttp.Model;
using MqttMsgServer.HttpService.dto;
using MqttMsgServer.Service.Client;
using MqttMsgServer.Service.ClientMessage;
using MqttMsgServer.Service.ClientMessage.Dto;
using MqttMsgServer.Tools;
using Newtonsoft.Json;

namespace MqttMsgServer.HttpService
{
    public class CustomHttpServer : HttpServerBase
    {
        public CustomHttpServer(int maxThreads) : base(maxThreads)
        {
        }
        protected override void ProcessHttpRequest(HttpListenerContext ctx)
        {
            try
            {
                var url = ctx.Request.Url.AbsolutePath;
                string httpMethod = ctx.Request.HttpMethod.ToLower();
                StreamReader reader = new StreamReader(ctx.Request.InputStream, Encoding.UTF8);
                string content = reader.ReadToEnd();
                this.LogDebug($"http request IP:{ctx.Request.UserHostAddress}----requestUri:{url}-------data:{content}");
                string response = "";
                switch (httpMethod)
                {
                    case "get":
                        response = "{\"url\":\"" + url + "\"}";
                        break;
                    case "post":
                        response = JsonConvert.SerializeObject(HandlePostRequest(url, content));
                        break;
                }
                byte[] buffer = Encoding.UTF8.GetBytes(response);
                ctx.Response.StatusCode = 200;
                ctx.Response.ContentType = "application/json; charset=UTF-8";
                ctx.Response.ContentLength64 = buffer.Length;
                ctx.Response.OutputStream.Write(buffer, 0, buffer.Length);
                ctx.Response.OutputStream.Close();
                ctx.Response.Close();
            }
            catch (Exception e)
            {
                this.LogError($"ProcessHttpRequest has error:"+e.Message);
            }
            
        }

        private ResponseResult HandlePostRequest(string url, string data)
        {
            ResponseResult result = new ResponseResult()
            {
                IsSuccess = false
            };
            if (string.IsNullOrEmpty(data))
            {
                result.ErrorMessage= "参数为空!";
                return result;
            }
            //if (!url.EndsWith("regClient"))
            //{
            //    result.ErrorMessage = "资源不存在404!";
            //    return result;
            //}
            string lastUrl = url.Substring(url.LastIndexOf('/'));
            lastUrl = lastUrl?.ToLower();
            switch (lastUrl)
            {
                case "/regclient":
                    result = RegisterClient(data);
                    break;
                case "/querymsg":
                    result = QueryMessageInfos(data);
                    break;
                case "/countmsg":
                    result = CountMessage(data);
                    break;
                default:
                    result.ErrorMessage = "资源不存在404!";
                    return result;
            }
            
            return result;
        }
        /// <summary>
        /// 注册客户端
        /// </summary>
        /// <param name="inputData"></param>
        /// <returns></returns>
        private ResponseResult RegisterClient(string inputData)
        {
            var clientDto = JsonConvert.DeserializeObject<ClientDto>(inputData);
            ClientInfoService cs = new ClientInfoService();
            return cs.AddOrUpdateClient(clientDto);
        }
        /// <summary>
        /// 查询消息信息（消息详情）1.根据查询条件查询（时间范围  客户端 主题  ）
        /// </summary>
        /// <returns></returns>
        private ResponseResult QueryMessageInfos(string inputData)
        {
            var inputDto = JsonConvert.DeserializeObject<MsgQueryParamDto>(inputData);
            ClientMessageService cmService = new ClientMessageService();
            return cmService.QueryMsgInfo(inputDto);
        }
        /// <summary>
        /// 统计消息（根据查询条件按时间段分组统计（小时，天,月,年）.）
        /// </summary>
        /// <returns></returns>
        private ResponseResult CountMessage(string inputData)
        {
            var inputDto = JsonConvert.DeserializeObject<MsgQueryCount>(inputData);
            ClientMessageService cmService = new ClientMessageService();
            return cmService.CountMsgInfo(inputDto);
        }
    }
}