/*

  This Source Code Form is subject to the terms of the Mozilla Public

  License, v. 2.0. If a copy of the MPL was not distributed with this

  file, You can obtain one at http://mozilla.org/MPL/2.0/.

  Copyright (C) 2009-2012 Michael Möller <mmoeller@openhardwaremonitor.org>

*/

using System;

using System.Collections.Generic;

using OpenHardwareMonitor.Hardware;

using OpenHardwareMonitor.Utilities;

namespace OpenHardwareMonitor.GUI {

  public class SensorNode : Node {

    private ISensor sensor;

    private PersistentSettings settings;

    private UnitManager unitManager;

    private string format;

    private bool plot = false;       

    public string ValueToString(float? value) {

      if (value.HasValue) {

        if (sensor.SensorType == SensorType.Temperature && 

          unitManager.TemperatureUnit == TemperatureUnit.Fahrenheit) {

          return string.Format("{0:F1} °F", value * 1.8 + 32);

        } else {

          return string.Format(format, value);

        }                

      } else

        return "-";

    }

    public SensorNode(ISensor sensor, PersistentSettings settings, 

      UnitManager unitManager) : base() {      

      this.sensor = sensor;

      this.settings = settings;

      this.unitManager = unitManager;

      switch (sensor.SensorType) {

        case SensorType.Voltage: format = "{0:F3} V"; break;

        case SensorType.Clock: format = "{0:F0} MHz"; break;

        case SensorType.Load: format = "{0:F1} %"; break;

        case SensorType.Temperature: format = "{0:F1} °C"; break;

        case SensorType.Fan: format = "{0:F0} RPM"; break;

        case SensorType.Flow: format = "{0:F0} L/h"; break;

        case SensorType.Control: format = "{0:F1} %"; break;

        case SensorType.Level: format = "{0:F1} %"; break;

        case SensorType.Power: format = "{0:F1} W"; break;

        case SensorType.Data: format = "{0:F1} GB"; break;

        case SensorType.Factor: format = "{0:F3}"; break;

      }

      bool hidden = settings.GetValue(new Identifier(sensor.Identifier, 

        "hidden").ToString(), sensor.IsDefaultHidden);

      base.IsVisible = !hidden;

      this.Plot = settings.GetValue(new Identifier(sensor.Identifier, 

        "plot").ToString(), false);

    }

    public override string Text {

      get { return sensor.Name; }

      set { sensor.Name = value; }

    }

    public override bool IsVisible {

      get { return base.IsVisible; }

      set { 

        base.IsVisible = value;

        settings.SetValue(new Identifier(sensor.Identifier,

          "hidden").ToString(), !value);

      }

    }

    public bool Plot {

      get { return plot; }

      set { 

        plot = value;

        settings.SetValue(new Identifier(sensor.Identifier, "plot").ToString(), 

          value);

        if (PlotSelectionChanged != null)

          PlotSelectionChanged(this, null);

      }

    }

    public event EventHandler PlotSelectionChanged;

    public ISensor Sensor {

      get { return sensor; }

    }

    public string Value {

      get { return ValueToString(sensor.Value); }

    }

    public string Min {

      get { return ValueToString(sensor.Min); }

    }

    public string Max {

      get { return ValueToString(sensor.Max); }

    }

    public override bool Equals(System.Object obj) {

      if (obj == null) 

        return false;

      SensorNode s = obj as SensorNode;

      if (s == null) 

        return false;

      return (sensor == s.sensor);

    }

    public override int GetHashCode() {

      return sensor.GetHashCode();

    }

  }

}