///
/// Copyright (c) 2013-2015 Sensus Metering Systems
///
using System.Collections.Generic;
using TBF.BenchControl.Generic;

namespace TBF.BenchControl
{
	public static class TbfComponents
	{
		public readonly static IList<IComponentFactory> Factories;

		static TbfComponents()
		{
			Factories = new List<IComponentFactory>();

			Factories.Add(new TestMethods.Adjustment.TestMethodFactory());
			Factories.Add(new ResultsPrinters.Basic.PrinterFactory());
			Factories.Add(new ResultsWriters.Basic.WriterFactory());
			Factories.Add(new BenchId.ComponentFactory());
			Factories.Add(new Cameras.CameraRoi.CameraRoiFactory());
			Factories.Add(new TestMethods.CombinedMeters.TestMethodFactory());
			Factories.Add(new TestMethods.CombinedWithDetection.TestMethodFactory());
			Factories.Add(new Elde.ControlBoardFactory());
			Factories.Add(new DataEntry.Combined.EntryFormFactory());
			Factories.Add(new DataEntry.Munich3.EntryFormFactory());
			Factories.Add(new DataEntry.Munich.EntryFormFactory());
            Factories.Add(new DataEntry.Standard.EntryFormFactory());
			Factories.Add(new DataEntry.Standard24.EntryFormFactory());
			Factories.Add(new Elde.Diverter.DiverterFactory());
			Factories.Add(new TestMethods.FixedStartMassCollection.TestMethodFactory());
			Factories.Add(new Elde.FixedStartRegisterReader.RegisterReaderFactory());
			Factories.Add(new Elde.FlowMeter.FlowMeterFactory());
			Factories.Add(new Elde.FlowMeterTwins.FlowMeterFactory());
			Factories.Add(new TestMethods.FlyingStart.TestMethodFactory());
			Factories.Add(new TestMethods.FlyingStartCollectionMethod.TestMethodFactory());
			Factories.Add(new DataEntry.WMStates.EntryFormFactory());
			Factories.Add(new Ambient.Comet.Factory());
			Factories.Add(new Ambient.Greco.Factory());
			Factories.Add(new Cameras.IdcCamera.IdcCameraFactory());
			Factories.Add(new TestMethods.LeakTest.TestMethodFactory());
			Factories.Add(new MettlerToledo.Standard.BalanceFactory());
			Factories.Add(new MettlerToledo.Standard.BalanceNewFactory());
			Factories.Add(new MettlerToledo.Multi.BalanceFactory());
			Factories.Add(new TestMethods.PMaxTest.TestMethodFactory());
			Factories.Add(new Elde.PressureMeter.PressureMeterFactory());
			Factories.Add(new Elde.PressureMeterInternal.PressureMeterFactory());
			Factories.Add(new Elde.Pump.PumpFactory());
			Factories.Add(new Danfoss.VLT2800.PumpFactory());
			Factories.Add(new Elde.PumpWithFM.PumpFactory());
            Factories.Add(new Elde.PumpTandem.PumpFactory());
			Factories.Add(new TestMethods.ReferenceFlowmeterCalibration.TestMethodFactory());
			Factories.Add(new Elde.RegisterReader.RegisterReaderFactory());
			Factories.Add(new Elde.RegulValve.RegulValveFactory());
			Factories.Add(new Elde.RegulValveTandem.RegulValveTandemFactory());
			Factories.Add(new ResultsPrinters.Munich.PrinterFactory());
			Factories.Add(new TestMethods.CameraRoiDetection.RoiDetectionFactory());
			Factories.Add(new Elde.TempMeter.TempMeterFactory());
			Factories.Add(new Elde.TempMeterInternal.TempMeterFactory());
			Factories.Add(new Elde.Valve.ValveFactory());
            Factories.Add(new WaterMeter.WaterMeterFactory());
		}

		/// <summary>
		/// Get a component factory given the component name
		/// </summary>
		/// <param name="className">Component class name</param>
		/// <returns>Component factory instance</returns>
		public static IComponentFactory CmpntFactoryFromClassName(string className)
		{
			foreach (var factory in Factories)
			{
				if (factory.ClassName.Equals(className)) return factory;
			}
			return null;
		}

        /// <summary>
        /// Get a component configuration given a component DB entity
        /// </summary>
        /// <param name="entity">DB entity</param>
        /// <returns>An appropriate component configuration or null if factory was not found</returns>
		public static IComponentCfg CmpntCfgFromCmpntEntity(Entities.Component entity)
		{
            IComponentFactory cmpntFactory = CmpntFactoryFromClassName(entity.ClassName);
            return (cmpntFactory != null) ? cmpntFactory.CmpntCfgFromCmpntEntity(entity) : null;
		}

		/// <summary>
		/// Load component entities from the database and convert them to TBF components
		/// derived from IComponent with mutual references.
		/// </summary>
		/// <param name="session">NHibernate DB session</param>
		/// <returns>A list of TBF Components</returns>
        public static IList<IComponent> LoadComponentsFromDB(NHibernate.ISession session)
        {
			foreach (var factory in Factories) factory.ResetStaticProperties();

			/// Load the list of components from the database
			IList<Entities.Component> cmptnEntities = session
				.CreateQuery("FROM Component ORDER BY ItemNr")
				.List<Entities.Component>();

			/// Convert database entities to TBF components
			IList<IComponent> components = new List<BenchControl.Generic.IComponent>();
			foreach (var entity in cmptnEntities)
            {
                IComponentFactory cmpntFactory = BenchControl.TbfComponents.CmpntFactoryFromClassName(entity.ClassName);
                if (cmpntFactory == null) continue;

				IComponent cmpnt = cmpntFactory.CmpntCfgFromCmpntEntity(entity).GetComponent(components);

                ///
				/// Inherit DebugMode from the parent (if any)
                ///
				if ((cmpnt.Cfg.DebugLevel == Entities.DebugMode.Inherit) &&
                    (cmpnt.Cfg is IChildComponentCfg) &&
					!string.IsNullOrEmpty(cmpnt.Cfg.ParentName))
				{
                    bool inherited = false;
					foreach (var par in components)
					{
						if (par.Cfg.Name.Equals(cmpnt.Cfg.ParentName))
                        {
                            /// Parent found, inherit the debug mode
                            cmpnt.Cfg.DebugLevel = par.Cfg.DebugLevel;
                            inherited = true;
                            break;
                        }
					}
                    if (!inherited)
                    {
                        /// Applied when the parent is (most likely) in DebugMode.Off
                        cmpnt.Cfg.DebugLevel = Entities.DebugMode.Off;
                    }
				}

				if (cmpnt.Cfg.DebugLevel != Entities.DebugMode.Off) components.Add(cmpnt);
            }

            return components;
        }

		/// <summary>
		/// Get a reference to a component with a given name from a list of components.
		/// </summary>
		/// <param name="name">Component name</param>
		/// <param name="components">A list of components</param>
		/// <returns>Matching component or null</returns>
		public static IComponent FindComponent(string name, IList<IComponent> components)
		{
			if (string.IsNullOrEmpty(name)) return null;
			foreach (var cmpnt in components)
			{
				if (cmpnt.Cfg.Name.Equals(name)) return cmpnt;
			}
			return null;
		}

		public static IComponent FindComponent(string name)
		{
			return FindComponent(name, StateMachine.Components);
		}
	}
}