using AwInitilizer.Assist;
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.WifImeiRecord
{
    public enum ErrorType
    {
        None,
        WifiImeiNotFound,
    }

    public enum LogEvent
    {
        WifiImei
    }

    public class WifImeiRecordProcedure : ProcedureBase
    {
        private readonly static Dictionary<LogEvent, string> ReportDict = new Dictionary<LogEvent, string>()
        {
            { LogEvent.WifiImei, "WifiRssi" }
        };
        
        private readonly static Dictionary<LogEvent, string> LogDict = new Dictionary<LogEvent, string>()
        {
            { LogEvent.WifiImei, "Get Wifi IMEI : {0}" }
        };

        public WifImeiRecordProcedure() : base()
        {
            Name = "WiFi IMEI record";
            Content = "read and upload WIFI IMEI";

            LogWriter = new ProcedureLog.LogWriter<WifImeiRecordProcedure, LogEvent>(this)
            {
                ReportPair = ReportDict,
                LogPair = LogDict
            };
        }

        public ErrorType Error { get; set; } = ErrorType.None;
        private ProcedureLog.LogWriter<WifImeiRecordProcedure, LogEvent> LogWriter;

        internal override async Task<bool> Run()
        {
            if (!UpdateData.SystemID.ModelName.Network.Description.Contains("WiFi"))
            {
                LogWriter.Log("Wifi not supported, skip procedure");

                return true;
            }

            var imei = await GetWifiImei();
            LogWriter.Report(LogEvent.WifiImei, imei);
            return string.IsNullOrEmpty(imei);
        }

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

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

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

                        if (matches.Count != 0)
                        {
                            var match = matches[0];
                            if (match.Groups.Count != 3)
                            {
                                Error = ErrorType.WifiImeiNotFound;
                                return "";
                            }
                            else
                            {
                                if (match.Groups[2].Value is string imei)
                                {
                                    return imei;
                                }
                                Error = ErrorType.WifiImeiNotFound;
                                return "";
                            }
                        }
                        else
                        {
                            Error = ErrorType.WifiImeiNotFound;
                            return "";
                        }
                    }
                }
            }
            catch (Exception e)
            {
                Error = ErrorType.WifiImeiNotFound;

                LogWriter.Log("Get Wifi IMEI Failed");
                LogWriter.Log(e.Message, isDebugLog: true);

                return "";
            }
        }
    }
}