using Sarand.Net.Standard.Base.App;
using Sarand.Net.Standard.Base.Utils;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;

namespace Sarand.Net.Standard.Base.Core
{
	//=======================================================================
	public class NamedValue
	{
		//-------------------------------------------------------------------
		// Data members.

		//-------------------------------------------------------------------
		// Construction.
		private NamedValue (String name, DataValue value)
		{
			Name = StringUtil.EmptyOnNull(name);
			Value = value ?? new DataValue();
		}

		//-------------------------------------------------------------------
		// Properties.
		public String Name { get; private set; }
		public DataValue Value { get; private set; }

		//-------------------------------------------------------------------
		/// <summary>Associative array of named values, case insensitive.</summary>
		public class Map
		{
			//---------------------------------------------------------------
			// Data members.
			private readonly Dictionary<String,DataValue> values = new Dictionary<String, DataValue>(StringComparer.OrdinalIgnoreCase);

			//---------------------------------------------------------------
			// Construction.
			public Map (Dictionary<String, DataValue> values = null)
			{
				if (values != null)
					this.values.AddRange(values);
			}
			public Map (NamedValue.Map values)
			{
				if (values != null)
					this.values.AddRange(values.values);
			}

			//---------------------------------------------------------------
			// Properties.
			/// <summary>Optional identifier for the set of values.</summary>
			public String Id { get; set; } = String.Empty;
			/// <summary>Retrieve a copy of the value list.</summary>
			public Dictionary<String, DataValue> Values { get { return new Dictionary<String, DataValue>(values); } }
			/// <summary>Number of values in collection.</summary>
			public int Count { get { return values.Count; } }

			//---------------------------------------------------------------
			// Update list.
			public void Clear ()
			{
				values.Clear();
			}
			public bool AddValue (String name, DataValue value)
			{
				if (String.IsNullOrEmpty(name) || value == null)
				{
					if (SacsSystem.DebugMode) SaLogger.Debug(GetType().Name + ".AddValue Invalid named value. Name: " + StringUtil.EmptyOnNull(name) + ". Value: " + (value != null ? value.GetDataType().ToString() : "null"));
					return false;
				}
				values[name] = value;
				return true;
			}
			public bool AddValues (NamedValue.Map values)
			{
				return AddValues(values.ToNamedValueList());
			}
			public bool AddValues (ICollection<NamedValue> values)
			{
				bool addValues = true;
				foreach (NamedValue value in values)
				{
					if (!AddValue(value.Name, value.Value))
						addValues = false;
				}
				return addValues;
			}
			/// <summary>Remove the named value from the list if present.</summary>
			public bool RemoveValue (String name)
			{
				if (!HasValue(name)) return false;
				return values.Remove(name);
			}
			/// <summary>Change the name of a value in the list.</summary>
			public bool RenameValue (String nameOld, String nameNew)
			{
				if (StringUtil.IsEmpty(nameOld) || !HasValue(nameOld) || StringUtil.IsEmpty(nameNew) || nameOld.EqualsCI(nameNew)) return false;
				DataValue value = GetValue(nameOld);
				RemoveValue(nameOld);
				return AddValue(nameNew, value);
			}

			//---------------------------------------------------------------
			/// <summary>Does the list include a value with the specified name.</summary>
			public bool HasValue (String name)
			{
				return values.HasValue(name);
			}

			//---------------------------------------------------------------
			/// <summary>Retrieve the value with the specified name.</summary>
			public DataValue GetValue (String name)
			{
				return values.GetValue(name);
			}
			/// <summary>Retrieve the named value as a String.</summary>
			public String GetString (String name, String defaultValue = "")
			{
				return values.GetString(name, defaultValue);
			}
			/// <summary>Retrieve the named value as a boolean.</summary>
			public bool GetBool (String name, bool defaultValue = false)
			{
				return values.GetBool(name, defaultValue);
			}
			/// <summary>Retrieve the named value as a long integer.</summary>
			public long GetLong (String name, long defaultValue = 0)
			{
				return values.GetLong(name, defaultValue);
			}
			/// <summary>Retrieve the named value as a double.</summary>
			public double GetDouble (String name, double defaultValue = 0)
			{
				return values.GetDouble(name, defaultValue);
			}
			/// <summary>Retrieve the named value as a decimal.</summary>
			public decimal GetDecimal (String name, decimal defaultValue = 0)
			{
				return values.GetDecimal(name, defaultValue);
			}
			/// <summary>Retrieve the named value as a DateTime.</summary>
			public DateTime GetDateTime (String name)
			{
				return values.GetDateTime(name);
			}
			/// <summary>Retrieve the named value as a date.</summary>
			public DateTime GetDate (String name)
			{
				return values.GetDate(name);
			}
			/// <summary>Retrieve the named value as a time.</summary>
			public DateTime GetTime (String name)
			{
				return values.GetTime(name);
			}

			//---------------------------------------------------------------
			// Conversion.
			//---------------------------------------------------------------
			public List<NamedValue> ToNamedValueList ()
			{
				List<NamedValue> values = new List<NamedValue>();
				foreach (String name in this.values.Keys)
					values.Add(new NamedValue(name, this.values.GetValue(name)));
				return values;
			}

			/// <summary>Concatenate the values with the specified delimiters.</summary>
			public String Concat (String entryDelim = ".", String valueDelim = "=")
			{
				return values.Concat(entryDelim, valueDelim);
			}

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

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

	//=======================================================================
	public static class NamedValueDictionary
	{
		//-------------------------------------------------------------------
		/// <summary>Does the list include a value with the specified name, case insensitive.</summary>
		public static bool HasValue (this Dictionary<String, DataValue> values, String name)
		{
			if (String.IsNullOrEmpty(name)) return false;
			return values.ContainsKey(name);
		}

		//-------------------------------------------------------------------
		/// <summary>Retrieve the value with the specified name.</summary>
		public static DataValue GetValue (this Dictionary<String, DataValue> values, String name)
		{
			if (StringUtil.IsEmpty(name)) return DataValue.NullValue;
			if (values.ContainsKey(name))
				return values[name];
			return DataValue.NullValue;
		}
		/// <summary>Retrieve the named value as a String.</summary>
		public static String GetString (this Dictionary<String, DataValue> values, String name, String defaultValue = "")
		{
			if (values.HasValue(name)) return values.GetValue(name).ToString();
			return defaultValue;
		}
		/// <summary>Retrieve the named value as a boolean.</summary>
		public static bool GetBool (this Dictionary<String, DataValue> values, String name, bool defaultValue = false)
		{
			if (values.HasValue(name)) return values.GetValue(name).AsBool();
			return defaultValue;
		}
		/// <summary>Retrieve the named value as a long integer.</summary>
		public static long GetLong (this Dictionary<String, DataValue> values, String name, long defaultValue = 0)
		{
			if (values.HasValue(name)) return values.GetValue(name).AsLong();
			return defaultValue;
		}
		/// <summary>Retrieve the named value as a double.</summary>
		public static double GetDouble (this Dictionary<String, DataValue> values, String name, double defaultValue = 0)
		{
			if (values.HasValue(name)) return values.GetValue(name).AsDouble();
			return defaultValue;
		}
		/// <summary>Retrieve the named value as a decimal.</summary>
		public static decimal GetDecimal (this Dictionary<String, DataValue> values, String name, decimal defaultValue = 0)
		{
			if (values.HasValue(name)) return values.GetValue(name).AsDecimal();
			return defaultValue;
		}
		/// <summary>Retrieve the named value as a DateTime.</summary>
		public static DateTime GetDateTime (this Dictionary<String, DataValue> values, String name)
		{
			if (values.HasValue(name)) return values.GetValue(name).AsDateTime();
			return DateTime.MinValue;
		}
		/// <summary>Retrieve the named value as a date.</summary>
		public static DateTime GetDate (this Dictionary<String, DataValue> values, String name)
		{
			if (values.HasValue(name)) return values.GetValue(name).AsDate();
			return DateTime.MinValue;
		}
		/// <summary>Retrieve the named value as a time.</summary>
		public static DateTime GetTime (this Dictionary<String, DataValue> values, String name)
		{
			if (values.HasValue(name)) return values.GetValue(name).AsTime();
			return DateTime.MinValue;
		}

		//-------------------------------------------------------------------
		// Conversion.
		/// <summary>Concatenate the values with the specified delimiters.</summary>
		public static String Concat (this Dictionary<String, DataValue> values, String entryDelim = ".", String valueDelim = "=")
		{
			List<String> dataValues = new List<string>();
			foreach (String name in values.Keys)
				dataValues.Add(name + valueDelim + values[name]);
			return dataValues.Concat(entryDelim);
		}

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

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