Common-VS2019/SacsStandardAccounts/Accounts/QuickBooks/Base/SaQuickBooksDataItem.cs

using Sarand.Net.Standard.Accounts.QuickBooks.App;
using Sarand.Net.Standard.Base.Core;
using Sarand.Net.Standard.Base.Bus;
using System;
using System.Collections.Generic;
using System.Text;

namespace Sarand.Net.Standard.Accounts.QuickBooks.Base
{
	//=======================================================================
	public class SaQuickBooksDataItem : SacsDisposable
	{
		//-------------------------------------------------------------------
		// Data members.
		private readonly NamedValue.Map values = new NamedValue.Map();

		//-------------------------------------------------------------------
		// Static initialisation.
		static SaQuickBooksDataItem ()
		{
		}

		//-------------------------------------------------------------------
		// Construction.
		protected SaQuickBooksDataItem (Qbk.EntityType entityType)
		{
			EntityType = entityType;
		}
		protected override void Dispose (bool disposing)
		{
			if (disposing)
			{
			}
		}

		//-------------------------------------------------------------------
		// Properties.
		public Qbk.EntityType EntityType { get; }

		//-------------------------------------------------------------------
		// Field values.
		public bool HasValue (String name)
		{
			return values.HasValue(name);
		}
		public DataValue.DataType GetValueType (String name)
		{
			DataValue value = GetValue(name);
			return value?.GetDataType() ?? DataValue.DataType.Unknown;
		}
		public DataValue GetValue (String name)
		{
			return values.GetValue(name);
		}
		public NamedValue.Map GetValues ()
		{
			return new NamedValue.Map(values.Values);
		}

		//-------------------------------------------------------------------
		// Update attributes.
		public bool SetValue (String name, DataValue value)
		{
			return values.AddValue(name, value);
		}
		public bool SetValue (String name, String value)
		{
			return SetValue(name, new DataValue(value));
		}
		public bool SetValue (String name, bool value)
		{
			return SetValue(name, new DataValue(value));
		}
		public bool SetValue (String name, long value)
		{
			return SetValue(name, new DataValue(value));
		}
		public bool SetValue (String name, double value)
		{
			return SetValue(name, new DataValue(value));
		}

		//-------------------------------------------------------------------
		//                        P a r a m e t e r s
		//-------------------------------------------------------------------
		/// <summary>Data item parameters.</summary>
		public class Params
		{
			/// <summary>Online: EntityId.</summary>
			public String EntityListId { get; set; } = "";
			/// <summary>Item identifier (ListId etc, partial = 'starts with').</summary>
			public String ItemId { get; set; } = "";
			/// <summary>Item identifier (ListId etc, partial = 'starts with').</summary>
			public String ItemIdPartial { get; set; } = "";
			public String EntityCode { get; set; } = "";
			/// <summary>Item name or description (partial = 'starts with').</summary>
			public String EntityName { get; set; } = "";
			/// <summary>Item name or description (partial = 'starts with').</summary>
			public String EntityNamePartial { get; set; } = "";
			/// <summary>FOB (invoice) filter.</summary>
			public String Fob { get; set; } = "";
			/// <summary>Avoid processing older items (orders etc.).</summary>
			public DateTime EarliestDate { get; set; } = DateTime.MinValue;
			public int MaxItems { get; set; } = 0;
		}

		//-------------------------------------------------------------------
		//                          I t e r a t o r
		//-------------------------------------------------------------------
		public abstract class Iterator : SaErrorStateItem
		{
			//---------------------------------------------------------------
			// Data members.
			private SaQuickBooksDataItem.Params prmQbk;
			private int itemCount = 0;
			//---------------------------------------------------------------
			// Construction.
			protected Iterator (Qbk.EntityType entityType)
			{
				EntityType = entityType;
			}
			protected override void Dispose (bool disposing)
			{
				if (disposing)
				{
				}
				base.Dispose(disposing);
			}
			//---------------------------------------------------------------
			// Properties.
			public Qbk.EntityType EntityType { get; }
			public SaQuickBooksDataItem.Params Params { get { return prmQbk; } }
			public static int PageLengthDefault { get; } = 20;
			public int ItemsFound { get; protected set; }
			public bool AtStart { get; protected set; }
			//---------------------------------------------------------------
			// Data items.
			/// <summary>Total number of items (do this after GotoStart).</summary>
			public virtual int GetItemCount ()
			{
				ClearErrorState();
				if (itemCount < 0 && AtStart)
				{
					// Retrieve and discard the first item in the list.
					SaQuickBooksDataItem item = GetNextItem();
					if (item != null) item.Dispose();
					// Reset to start of list.
					ItemsFound = 0;
				}
				return 0;
			}
			/// <summary>Reset the item iteration.</summary>
			public virtual void GotoStart (SaQuickBooksDataItem.Params prmQbk)
			{
				ClearErrorState();
				this.prmQbk = prmQbk;
				AtStart = true;
				ItemsFound = 0;
			}
			public abstract SaQuickBooksDataItem GetNextItem ();
			/// <summary>Retrieve specific item (exception if more than one found).</summary>
			public SaQuickBooksDataItem GetItem (SaQuickBooksDataItem.Params prmQbk)
			{
				ClearErrorState();
				Iterator iterator = Clone();
				iterator.GotoStart(prmQbk);
				SaQuickBooksDataItem item1 = iterator.GetNextItem();
				SaQuickBooksDataItem item2 = iterator.GetNextItem();
				if (item2 != null)
				{
					// Only 1 item expected.
					if (item1 != null) item1.Dispose(); item1 = null;
					if (item2 != null) item2.Dispose(); item2 = null;
					SetErrorState("Multiple items found");
				}
				return item1;
			}
			/// <summary>List of matching items (use where volume is limited).</summary>
			public List<SaQuickBooksDataItem> GetItems (SaQuickBooksDataItem.Params prmQbk)
			{
				ClearErrorState();
				List<SaQuickBooksDataItem> items = new List<SaQuickBooksDataItem>();
				Iterator iterator = Clone();
				iterator.GotoStart(prmQbk);
				SaQuickBooksDataItem item = null;
				while ((item = iterator.GetNextItem()) != null)
					items.Add(item);
				return items;
			}
			//---------------------------------------------------------------
			// Utilities.
			protected abstract Iterator Clone ();
			//---------------------------------------------------------------
		}

		//-------------------------------------------------------------------
	}
	//=======================================================================
}