using Sarand.Net.Standard.Base.Core;
using System;
using System.Collections.Generic;
using System.Text;

namespace Sarand.Net.Standard.Base.Bus
{
	//=======================================================================
	public class DataItem
	{
		//-------------------------------------------------------------------
		// Data members.
		private readonly NamedValue.Map values = new NamedValue.Map();
		private readonly List<DataItem> childItems = new List<DataItem>();

		//-------------------------------------------------------------------
		// Construction.
		public DataItem (int itemType = 0)
		{
			this.ItemType = itemType;
		}
		public DataItem (NamedValue.Map values, int itemType = 0)
		{
			this.ItemType = itemType;
		}

		//-------------------------------------------------------------------
		// Properties.
		public int ItemType { get; }

		//-------------------------------------------------------------------
		// Values.
		public bool HasValue (String name)
		{
			return values.HasValue(name);
		}
		public DataValue.DataType GetValueType (String name)
		{
			return GetValue(name)?.GetDataType() ?? DataValue.DataType.Unknown;
		}
		public DataValue GetValue (String name)
		{
			return values.GetValue(name);
		}
		public NamedValue.Map GetValues ()
		{
			return new NamedValue.Map(values);
		}
		public bool SetValue (String name, DataValue value)
		{
			values.AddValue(name, value);
			return HasValue(name);
		}
		public bool SetValue (NamedValue value)
		{
			return SetValue(value.Name, value.Value);
		}
		public bool SetValues (NamedValue.Map values)
		{
			return this.values.AddValues(values);
		}
		public bool SetValues (ICollection<NamedValue> values)
		{
			return this.values.AddValues(values);
		}
		public bool RenameValue (String nameOld, String nameNew)
		{
			return values.RenameValue(nameOld, nameNew);
		}

		//-------------------------------------------------------------------
		// Child items.
		public long GetChildItemCount ()
		{
			return childItems.Count;
		}
		public DataItem GetChildItemByPos (int itemIdx)
		{
			if (itemIdx <= childItems.Count)
				return childItems[itemIdx];
			return null;
		}
		public DataItem GetChildItemByType (int itemType)
		{
			return childItems.Find(item => item.ItemType == itemType);
		}
		public List<DataItem> GetChildItemsByType (int itemType)
		{
			List<DataItem> items = new List<DataItem>();
			foreach (DataItem item in childItems)
			{
				if (item != null && item.ItemType == itemType)
					items.Add(item);
			}
			return items;
		}

		// Update child items.
		public bool ClearChildItems ()
		{
			childItems.Clear();
			return true;
		}
		public bool AddChildItem (DataItem item)
		{
			if (item != null)
				childItems.Add(item);
			return item != null;
		}

		//-------------------------------------------------------------------
	}

	//=======================================================================
	public static class SacsDataItemList
	{

	}
	//=======================================================================
}