using AwInitilizer.Assist;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;

namespace AwInitilizer.Procedure
{
    public class WifRssiCheckProcedure : ProcedureBase
    {
        public WifRssiCheckProcedure() : base()
        {
            Name = "WiFi Rssi Check";
            Content = "Check Wifi Rssi Signal";
        }

        internal override async Task<bool> Run()
        {
            if (!UpdateData.SystemID.ModelName.Network.ToString().Contains("WiFi"))
            {
                //if does not support Wifi then end init
                InfoLog += "model name does not support Wifi ,skip check process\n";
                ReportLog.Add("Wifi not supported, skip procedure");
                return true;
            }

            Logger.Print("Connecting to EVSE");
            var checkResult = await CheckWifiRssi();
            return checkResult;
        }

        internal async Task<bool> CheckWifiRssi()
        {
            try
            {
                using (WebClientTimeout webClient = new WebClientTimeout())
                {
                    NameValueCollection parameters = new NameValueCollection();
                    parameters.Add("opt", "3");
                    webClient.QueryString = parameters;

                    using (Stream stream = await webClient.OpenReadTaskAsync($"https://{ServerIpAddress}/get_query_action.php"))
                    // 使用 StreamReader 讀取 stream 內的字元
                    using (StreamReader reader = new StreamReader(stream))
                    {
                        // 將 StreamReader 所讀到的字元轉為 string
                        string request = reader.ReadToEnd();
                        InfoLog += $"GetResponse:{request}";
                        Logger.Print($"GetResponse:{request}", isError: false);

                        Regex rx_mode = new Regex("(WifiMode)\\\": ([0-9]*)");
                        var matches_mode = rx_mode.Matches(request);

                        if (matches_mode.Count != 0)
                        {
                            var match = matches_mode[0];
                            if (match.Groups.Count != 3)
                            {
                                return false;
                            }
                            else
                            {
                                if (int.TryParse(match.Groups[2].Value, out var wifiMode))
                                {
                                    if (wifiMode != 1)
                                        return false;
                                }
                                else
                                {
                                    return false;
                                }
                            }
                        }
                        else
                        {
                            return false;
                        }

                        Regex rx = new Regex("(WifiRssi)\\\": (-?[0-9]*)");
                        var matches = rx.Matches(request);

                        if (matches.Count != 0)
                        {
                            var match = matches[0];
                            if (match.Groups.Count != 3)
                            {
                                return false;
                            }
                            else
                            {
                                if (int.TryParse(match.Groups[2].Value, out var rssiSignal))
                                {
                                    LogPair.Add("WifiRssi", rssiSignal.ToString());
                                    return rssiSignal >= -80;
                                }
                                return false;
                            }
                        }
                        else
                        {
                            return false;
                        }
                    }
                }
            }
            catch (Exception e)
            {
                Logger.Print("Get Wifi Rssi Failed", isError: true);
                Logger.Print(e.Message + "", isError: true);

                InfoLog += "Get Wifi Rssi Failed\n";
                InfoLog += e.Message;
                InfoLog += "\n";

                return false;
            }
        }
    }
}