using System;
using System.Collections.Generic;
using Serilog.Events;

namespace PepperDash.Core
{
	//*********************************************************************************************************
 /// <summary>
 /// Represents a Device
 /// </summary>
	public class Device : IKeyName
	{

		/// <summary>
		/// Unique Key
		/// </summary>
		public string Key { get; protected set; }
  /// <summary>
  /// Gets or sets the Name
  /// </summary>
		public string Name { get; protected set; }
		/// <summary>
		/// 
		/// </summary>
		public bool Enabled { get; protected set; }

		/// <summary>
		/// A place to store reference to the original config object, if any. These values should 
		/// NOT be used as properties on the device as they are all publicly-settable values.
		/// </summary>
		//public DeviceConfig Config { get; private set; }
		/// <summary>
		/// Helper method to check if Config exists
		/// </summary>
		//public bool HasConfig { get { return Config != null; } }

		List<Action> _PreActivationActions;
		List<Action> _PostActivationActions;

		/// <summary>
		/// 
		/// </summary>
		public static Device DefaultDevice { get { return _DefaultDevice; } }
		static Device _DefaultDevice = new Device("Default", "Default");

		/// <summary>
		/// Base constructor for all Devices.
		/// </summary>
		/// <param name="key"></param>
		public Device(string key)
		{
			Key = key;
			if (key.Contains(".")) Debug.LogMessage(LogEventLevel.Information, "WARNING: Device key should not include '.'", this);
			Name = "";
		}

		/// <summary>
		/// Constructor with key and name
		/// </summary>
		/// <param name="key"></param>
		/// <param name="name"></param>
		public Device(string key, string name) : this(key)
		{
			Name = name;

		}

		//public Device(DeviceConfig config)
		//    : this(config.Key, config.Name)
		//{
		//    Config = config;
		//}

		/// <summary>
		/// Adds a pre activation action
		/// </summary>
		/// <param name="act"></param>
		public void AddPreActivationAction(Action act)
		{
			if (_PreActivationActions == null)
				_PreActivationActions = new List<Action>();
			_PreActivationActions.Add(act);
		}

		/// <summary>
		/// Adds a post activation action
		/// </summary>
		/// <param name="act"></param>
  /// <summary>
  /// AddPostActivationAction method
  /// </summary>
		public void AddPostActivationAction(Action act)
		{
			if (_PostActivationActions == null)
				_PostActivationActions = new List<Action>();
			_PostActivationActions.Add(act);
		}

  /// <summary>
  /// PreActivate method
  /// </summary>
		public void PreActivate()
		{
			if (_PreActivationActions != null)
				_PreActivationActions.ForEach(a =>
				{
					try
					{
						a.Invoke();
					}
					catch (Exception e)
					{
						Debug.LogMessage(e, "Error in PreActivationAction: " + e.Message, this);
					}
				});
		}

  /// <summary>
  /// Activate method
  /// </summary>
		public bool Activate()
		{
			//if (_PreActivationActions != null)
			//    _PreActivationActions.ForEach(a => a.Invoke());
			var result = CustomActivate();
			//if(result && _PostActivationActions != null)
			//    _PostActivationActions.ForEach(a => a.Invoke());
			return result;
		}

  /// <summary>
  /// PostActivate method
  /// </summary>
		public void PostActivate()
		{
			if (_PostActivationActions != null)
				_PostActivationActions.ForEach(a =>
				{
					try
					{
						a.Invoke();
					}
					catch (Exception e)
					{
						Debug.LogMessage(e, "Error in PostActivationAction: " + e.Message, this);
					}
				});
		}

		/// <summary>
		/// Called in between Pre and PostActivationActions when Activate() is called. 
		/// Override to provide addtitional setup when calling activation.  Overriding classes 
		/// do not need to call base.CustomActivate()
		/// </summary>
		/// <returns>true if device activated successfully.</returns>
  /// <summary>
  /// CustomActivate method
  /// </summary>
		public virtual bool CustomActivate() { return true; }

		/// <summary>
		/// Call to deactivate device - unlink events, etc.  Overriding classes do not
		/// need to call base.Deactivate()
		/// </summary>
		/// <returns></returns>
		public virtual bool Deactivate() { return true; }

		/// <summary>
		/// Call this method to start communications with a device. Overriding classes do not need to call base.Initialize()
		/// </summary>
		public virtual void Initialize()
		{
		}

		/// <summary>
		/// Helper method to check object for bool value false and fire an Action method
		/// </summary>
		/// <param name="o">Should be of type bool, others will be ignored</param>
		/// <param name="a">Action to be run when o is false</param>
		public void OnFalse(object o, Action a)
		{
			if (o is bool && !(bool)o) a();
		}

        /// <summary>
        /// Returns a string representation of the object, including its key and name.
        /// </summary>
        /// <remarks>The returned string is formatted as "{Key} - {Name}". If the <c>Name</c> property is
        /// null or empty,  "---" is used in place of the name.</remarks>
        /// <returns>A string that represents the object, containing the key and name in the format "{Key} - {Name}".</returns>
  /// <summary>
  /// ToString method
  /// </summary>
		public override string ToString()
		{
			return string.Format("{0} - {1}", Key, string.IsNullOrEmpty(Name) ? "---" : Name);
		}
	}
}