using System;
using System.Collections.Generic;

namespace BlubbFish.Utils.IoT.Connector {
  public abstract class ADataBackend {

    public abstract event MqttMessage MessageIncomming;
    public abstract event MqttMessage MessageSending;
    public delegate void MqttMessage(Object sender, MqttEventArgs e);

    public static ADataBackend GetInstance(Dictionary<String, String> settings) {
      if(settings.Count == 0) {
        return null;
      }
      String object_sensor = "BlubbFish.Utils.IoT.Connector.Data." + Char.ToUpper(settings["type"][0]) + settings["type"].Substring(1).ToLower()+", "+ "ConnectorData" + Char.ToUpper(settings["type"][0]) + settings["type"].Substring(1).ToLower();
      Type t = null;
      try {
        t = Type.GetType(object_sensor, true);
      } catch (TypeLoadException) {
        Console.Error.WriteLine("settings.ini: " + settings["type"] + " is not a DataBackend");
        return null;
      } catch(System.IO.FileNotFoundException) {
        Console.Error.WriteLine("Driver " + settings["type"] + " could not load!");
        return null;
      }
      return (ADataBackend)t.GetConstructor(new Type[] { typeof(Dictionary<String, String>) }).Invoke(new Object[] { settings });
    }

    public abstract void Send(String topic, String data);

    public abstract void Dispose();
  }
}