using Aurora.Api.Devices;
using Hermes;
using System;
using System.Collections.Generic;
using System.Linq;

namespace AuroraLight.LFINE
{
    internal class LCPLight : SerialConn, ILCPLight
    {
        private string _deviceId;
        private int _lightChannelCount;

        public bool _commError { get; set; } = false;
        private SerialConnConfig _connConfig;
        readonly int BYTE_MAX = 1024;
        public int[] LightValue { get; set; }

        const int LIGHT_MAX_VALUE = 255;
        protected int m_timeOut = 1;

        const byte bySTX = 0x02;
        const byte byETX = 0x03;
        private string STX = "";
        private string ETX = "";

        public LCPLight(string deviceId, bool isSimul, int lightChannelCount) : base(deviceId, isSimul)
        {
            _deviceId = deviceId;
            _lightChannelCount = lightChannelCount;
            LightValue = new int[lightChannelCount];

            // 한번에 바꾸지 않는 이유가 있나? 일단 Legacy 에서 옮겨옴
            STX = Convert.ToString(Convert.ToChar((int)bySTX));
            ETX = Convert.ToString(Convert.ToChar((int)byETX));
        }

        public bool InitInternal(SerialConnConfig conn)
        {
            _connConfig = conn;
            LightValue = Enumerable.Repeat(0, (int)_lightChannelCount).ToArray<int>();

            bool bRet = false;
            try {
                // Legacy 에는 Buffer clear 를 위한 Reset 함수가 있으나, Aurora SerialConn 에서는 Write 할때 Buffer clear 를 자동으로 해준다.
                // Open 할때 자동으로 켜줄것인가? 켜는함수는 따로 호출할것인가. Legacy 에서는 자동으로 켜줬는데 다른 Device 는 자동으로 켜주지 않는다.
                bRet = Open(_connConfig) == E1.OK;
                if (bRet) {
                    bRet = OffLightInternal() == E1.OK;
                    if (bRet)
                        Log.D(string.Format("[ {0} CONNECTED ]", _deviceId));
                    _commError = !bRet;
                } else {
                    _commError = true;
                }
                return bRet;
            } catch (Exception e) {
                Log.W($"InitInternal Failed. ( {e.Message} )");
                return bRet;
            }

        }
        public bool IsPortErrorInternal()
        {
            return _commError;
        }

        public int OffLightInternal()
        {
            try {
                if (!IsConnected()) return E2.NOT_CONNECTED;
                SetAllLightPowerStatus(false);
                return E1.OK;
            } catch (Exception e) {
                Log.W($"OffLightInternal Failed. ( {e.Message} )");
                return E2.CANCELLED;
            }
        }
        public int OffLightInternal(int iChannel)
        {
            try {
                if (!IsConnected()) return E2.NOT_CONNECTED;
                SetLightPowerStatus(iChannel, false);
                return E1.OK;
            } catch (Exception e) {
                Log.W($"{iChannel}ch OffLightInternal Failed. ( {e.Message} )");
                return E2.CANCELLED;
            }
        }
        public int SetLightValueInternal(List<int> values)
        {
            try {
                bool bRet = true;
                for (int i = 0; i < values.Count; i++) {
                    if (SetLightBrightness(i, values[i]) != E1.OK)
                        bRet = false;
                }
                return bRet ? E1.OK : E2.CANCELLED;
            } catch (Exception e) {
                Log.W($"SetLightValueInternal Failed. ( {e.Message} )");
                return E2.CANCELLED;
            }
        }

        public int SetLightValueInternal(int iChannel, int iValue)
        {
            try {
                return SetLightBrightness(iChannel, iValue);
            } catch (Exception e) {
                Log.W($"{iChannel}ch SetLightValueInternal Failed. ( {e.Message} )");
                return E2.CANCELLED;
            }
        }
        public void SetAllLightPowerStatus(bool on)
        {
            for (int i = 0; i < _lightChannelCount; i++) {
                SetLightPowerStatus(i, on);
            }
        }

        /// <summary>
        /// 조명의 채널을 키고 끄는 함수(밝기 값은 유지됨)
        /// </summary>
        /// <param name="channel">설정할 조명 채널(0부터 시작)</param>
        /// <param name="on">ON/OFF</param>
        public void SetLightPowerStatus(int channel, bool bOn)
        {
            try {
                if (!IsConnected())
                    return;
                else if (channel < 0 || _lightChannelCount - 1 < channel)
                    return;

                lock (this) {
                    if (bOn) {
                        string value = STX + channel + "o" + ETX;
                        Write(value);
                    } else {
                        string value = STX + channel + "f" + ETX;
                        Write(value);
                    }
                }
            } catch (Exception e) {
                Log.W($"{channel}ch SetLightPowerStatus Failed. ( {e.Message} )");
            }
        }
        public int SetLightBrightness(int channel, int brightnessValue)
        {
            // <param> brightnessValue : (0~1024)

            uint targetLightValue = (uint)(LIGHT_MAX_VALUE * (brightnessValue * 0.01));

            try {
                if (!IsConnected())
                    return E2.NOT_CONNECTED;

                if (!ChannelValidCheck(channel))
                    return E2.INVALID_ARGUMENT;

                if (!ValueValidCheck(brightnessValue))
                    return E2.INVALID_ARGUMENT;

                lock (this) {
                    string strValue = LightValueString(Convert.ToString(brightnessValue));
                    string value = STX + channel + "w" + strValue + ETX;

                    if (Write(value)) {
                        LightValue[channel] = brightnessValue;
                        return E1.OK;
                    } else {
                        return E2.CANCELLED;
                    }
                }
            } catch (Exception e) {
                Log.W($"{channel}ch SetLightBrightness Failed. ( {e.Message} )");
                return E2.CANCELLED;
            }

        }
        private bool ChannelValidCheck(int iChannel)
        {
            if (iChannel < _lightChannelCount && iChannel >= 0) {
                return true;
            } else {
                Log.W($"Channel is not exist. Range : 0~{(int)_lightChannelCount - 1} Input : {iChannel}");
                return false;
            }
        }

        private bool ValueValidCheck(int iValue)
        {
            if (iValue <= 1024 && iValue >= 0) {
                return true;
            } else {
                Log.W($"LightValue Range Error. Range : 0~255, Input : {iValue}");
                return false;
            }
        }
        private string LightValueString(string sNum)
        {
            string result = "";
            if (sNum.Length < 4) {
                for (int i = 0; i < 4 - sNum.Length; i++) {
                    result = result + "0";
                }
                result = result + sNum;
            } else {
                result = sNum;
            }

            return result;
        }
    }
}