using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using BlubbFish.IoT.Zway.Events;
using BlubbFish.IoT.Zway.Interfaces;
using BlubbFish.IoT.Zway.lib;
using BlubbFish.Utils.IoT.Interfaces.Language;
using LitJson;

namespace BlubbFish.IoT.Zway.Devices.CommandClasses.CommandClassSubs {
  public class Metersub : ACommandClass {
    public override event UpdatedValue Update;

    #region Properties
    /// <summary>
    /// Type of the Sensor
    /// </summary>
    public String Type { get; private set; }
    /// <summary>
    /// Actual value of the Sensor
    /// </summary>
    public Double Level { get; private set; }
    /// <summary>
    /// Scale of the Sensor
    /// </summary>
    public String Scale { get; private set; }
    #endregion

    #region Constructor
    public Metersub(JsonData json, Tuple<Int32, Int32, Classes, Int32> id, HttpConnection http, Boolean polling) : base(json, id, http, polling) {
      this.HasReset = true;
      this.IsSub = true;
      InitComplex(json);
    }

    private void InitComplex(JsonData json) {
      if (json.Keys.Contains("sensorTypeString") &&
        json["sensorTypeString"].Keys.Contains("value") &&
        json.Keys.Contains("val") &&
        json["val"].Keys.Contains("value") &&
        json.Keys.Contains("scaleString") &&
        json["scaleString"].Keys.Contains("value")) {
        this.Type = json["sensorTypeString"]["value"].ToString();
        this.Level = Double.Parse(json["val"]["value"].ToString());
        this.Scale = json["scaleString"]["value"].ToString();
      }
    }
    #endregion

    #region ACommandClass
    public override String ToString() {
      return "Meter " + this.Name + " [" + this.Id + "]: " + this.Type + " " + this.Level + "" + this.Scale;
    }

    public override Dictionary<String, Object> ToDictionary() {
      return new Dictionary<String, Object> {
        { "Level", this.Level },
        { "Type", this.Type },
        { "Scale", this.Scale },
      };
    }

    internal override void SetUpdate(JsonData json, Match match) {
      if (json.Keys.Contains("val") && json["val"].Keys.Contains("value") &&
          json.Keys.Contains("sensorTypeString") && json["sensorTypeString"].Keys.Contains("value") &&
          json.Keys.Contains("scaleString") && json["scaleString"].Keys.Contains("value") && 
          this.CheckSetUpdateTime(json)) {
        this.Level = Double.Parse(json["val"]["value"].ToString());
        this.Type = json["sensorTypeString"]["value"].ToString();
        this.Scale = json["scaleString"]["value"].ToString();
        this.Update?.Invoke(this, new DeviceUpdateEvent(new Tuple<String, String, Double>(this.Type, this.Scale, this.Level), this.LastUpdate, this));
      }
    }

    internal override void Poll() => this.PollNone();
    #endregion

    #region ISenml
    protected override List<Senml> ToSenmlList() {
      if (this.Scale == "W") {
        return new List<Senml>() { new SenmlDouble("power", Senml.Units.Watt, this.Level) };
      } else if(this.Scale == "kWh") {
        return new List<Senml>() { new SenmlDouble("consumption", Senml.Units.Joule, this.Level * 1000 * 3.6 * 1000) };
      }
      return new List<Senml>() {};
    }
    #endregion
  }
}