using System;
using System.ComponentModel;
using System.Text;

namespace Plane.Net
{
    public class PLNet : PLClass.PLNet
    {
        public PLNet(AsyncOperation asyncOperation) : base(asyncOperation)
        {
        }

        public event EventHandler<PositionEventArgs> GetUserLocation2;

        public event EventHandler<GpsTrackEndedEventArgs> GpsTrackEnded;

        public event EventHandler<PositionEventArgs> mynet_GPSTrackArrival2;

        /// <summary>
        /// 取轨迹。
        /// </summary>
        /// <param name="id">用户 ID。</param>
        /// <param name="date">日期字符串，"20150416"。</param>
        /// <param name="period">时间段，"145740-150306"。</param>
        public void GetGPSTrack2(string id, string date, string period)
        {
            SendCmd($"~{id}|{date}|{period.Replace('-', '|')}|0|1");
        }

        public override bool ProcessData(byte[] data)
        {
            switch ((char)data[0])
            {
                case 'G':
                    ProcessUserLocationMessage(data);
                    break;

                case '^':
                    ProcessGpsTrackMessage(data);
                    break;

                default:
                    return base.ProcessData(data);
            }
            return true;
        }

        /// <summary>
        /// 查询哪天有轨迹。
        /// </summary>
        /// <param name="id">用户 ID。</param>
        /// <param name="startDate">起始日期，"yyyyMMdd"。</param>
        /// <param name="endDate">结束日期，"yyyyMMdd"。</param>
        public void QueryTrackDays(string id, string startDate, string endDate)
        {
            var cmd = $"DD{id}|{startDate}|{endDate}|1";
            SendCmd(cmd);
        }

        /// <summary>
        /// 查询某天哪些时间段有轨迹。
        /// </summary>
        /// <param name="id">用户 ID。</param>
        /// <param name="date">日期字符串，格式为 "yyyyMMdd"。</param>
        public void QueryTrackPeriods(string id, string date)
        {
            var cmd = $"DT{id}|{date}|1";
            SendCmd(cmd);
        }

        private PositionEventArgs GetPositionEventArgs(byte[] data)
        {
            var getUserLocation2EventArgs = new PositionEventArgs();

            getUserLocation2EventArgs.Ident = (char)data[1];

            byte[] buffer = new byte[16];

            Array.Copy(data, 2, buffer, 0, 16);
            getUserLocation2EventArgs.Id = Encoding.GetEncoding("GBK").GetString(buffer).TrimEnd('\0');

            //buffer = new byte[4];
            Array.Copy(data, 23, buffer, 0, 4);
            getUserLocation2EventArgs.Longitude = BitConverter.ToSingle(buffer, 0);

            Array.Copy(data, 27, buffer, 0, 4);
            getUserLocation2EventArgs.Latitude = BitConverter.ToSingle(buffer, 0);

            Array.Copy(data, 33, buffer, 0, 4);
            getUserLocation2EventArgs.Roll = BitConverter.ToSingle(buffer, 0);

            Array.Copy(data, 37, buffer, 0, 4);
            getUserLocation2EventArgs.Pitch = BitConverter.ToSingle(buffer, 0);

            Array.Copy(data, 41, buffer, 0, 4);
            getUserLocation2EventArgs.Yaw = BitConverter.ToSingle(buffer, 0);

            getUserLocation2EventArgs.Mode = data[45];
            getUserLocation2EventArgs.Speed = data[46];
            getUserLocation2EventArgs.Satellite = data[47];
            getUserLocation2EventArgs.Battery = data[48];

            //buffer = new byte[2];

            //高度
            Array.Copy(data, 31, buffer, 0, 2);
            getUserLocation2EventArgs.Altitude = BitConverter.ToInt16(buffer, 0);

            Array.Copy(data, 49, buffer, 0, 2);
            getUserLocation2EventArgs.Distance = BitConverter.ToUInt16(buffer, 0);

            Array.Copy(data, 51, buffer, 0, 2);
            getUserLocation2EventArgs.FlySecond = BitConverter.ToUInt16(buffer, 0);

            //buffer = new byte[8];

            Array.Copy(data, 53, buffer, 0, 8);
            double r_time = BitConverter.ToDouble(buffer, 0);
            getUserLocation2EventArgs.RecordTime = (
                new DateTime(1899, 12, 30, 0, 0, 0, DateTimeKind.Utc) + TimeSpan.FromDays(r_time)
            ).ToString("yyyy-MM-dd HH:mm:ss.fff");

            //new DateTime(
            //        TimeSpan.FromMilliseconds(((r_time - 25569.0) * 86400000.0 - 28800000.0)).Ticks,
            //        DateTimeKind.Utc
            //    ).ToString("yyyy-MM-dd HH:mm:ss.fff");
            return getUserLocation2EventArgs;
        }

        private void ProcessGpsTrackMessage(byte[] data)
        {
            int commandLength = data.Length - 1;
            if (commandLength < 18)
            {
                GpsTrackEnded?.Invoke(this, new GpsTrackEndedEventArgs
                {
                    Id = Encoding.GetEncoding("GBK").GetString(data, 1, data.Length - 1)
                });
            }
            else
            {
                var positionEventArgs = GetPositionEventArgs(data);
                mynet_GPSTrackArrival2?.Invoke(this, positionEventArgs);
            }
        }

        private void ProcessUserLocationMessage(byte[] data)
        {
            var positionEventArgs = GetPositionEventArgs(data);
            GetUserLocation2?.Invoke(this, positionEventArgs);
        }
    }
}