using System;
using System.Collections.Generic;
using Sarand.Net.Standard.Base.App;
using Sarand.Net.Standard.Base.Core;
using Sarand.Net.Standard.Base.Bus;
using Sarand.Net.Standard.Base.Dbas;

namespace Sarand.Net.Standard.Base.ReferenceData
{
	//=======================================================================
	public abstract partial class SaReferenceDataMgr : SacsItemMgr
	{
		//*******************************************************************
		//                         L a n g u a g e s
		//*******************************************************************
		// Retrieve individual languages.
		public abstract bool LanguageExistsById (SysId id);
		public abstract bool LanguageExistsByCode (String code);
		public abstract SaLanguage GetLanguageById (SysId id);
		public abstract SaLanguage GetLanguageByCode (String code);
		public abstract SaLanguage GetLanguage (SaLanguage.Params prm);

		// Create language.
		public abstract SaLanguage CreateLanguage ();

		//-------------------------------------------------------------------
		// Validate language data.
		public bool IsValidLanguage (SaLanguage language)
		{
			ClearErrorState();
			if (language == null) return SetErrorState(ErrorMessage.ItemNotSpecified);
			return IsValidLanguageData(language.GetData(), new SaLanguage.ErrField());
		}
		public virtual bool IsValidLanguageData (SaLanguage.Data data, SaLanguage.ErrField errField)
		{
			ClearErrorState();
			// Language properties.
			if (errField.Code != SacsHierarchyItem.ValidValue.Ignore && !IsValidValue(data.Code, "code", (long)SaReferenceDataDbDfn.GetColTextLen(SaReferenceDataDbDfn.ColumnIdx.Language_Code), true))
			{
				errField.Code = SacsHierarchyItem.ValidValue.Invalid;
				return false;
			}
			if (errField.Name != SacsHierarchyItem.ValidValue.Ignore && !IsValidValue(data.Name, "name", (long)SaReferenceDataDbDfn.GetColTextLen(SaReferenceDataDbDfn.ColumnIdx.Language_Name), true))
			{
				errField.Name = SacsHierarchyItem.ValidValue.Invalid;
				return false;
			}
			if (errField.Unicode != SacsHierarchyItem.ValidValue.Ignore && data.Unicode)
			{
				errField.Unicode = SacsHierarchyItem.ValidValue.Invalid;
				return false;
			}
			if (errField.Translation != SacsHierarchyItem.ValidValue.Ignore && data.Translation)
			{
				errField.Translation = SacsHierarchyItem.ValidValue.Invalid;
				return false;
			}
			// Validate associated data.
			if (errField.LanguageIdPrimary != SacsHierarchyItem.ValidValue.Ignore && SysId.IsValid(data.LanguageIdPrimary))
			{
				if (!LanguageExistsById(data.LanguageIdPrimary))
				{
					errField.LanguageIdPrimary = SacsHierarchyItem.ValidValue.Invalid;
					return SetErrorState("Language's parent not found");
				}
			}
			return true;

		}

		//-------------------------------------------------------------------
		// Language database interface.
		public abstract bool InsertLanguage (SaLanguage language, DbUpdateInfo dbUpdateInfo);
		public abstract bool UpdateLanguage (SaLanguage language, DbUpdateInfo dbUpdateInfo);
		public virtual bool LanguageCanBeDeleted (SaLanguage language)
		{
			ClearErrorState();
			if (language == null) return SetErrorState(Msg_ItemNotSpecified);
			if (language.HasDependentLanguages()) return SetErrorState("Has dependent languages");
			return true;
		}
		public abstract bool DeleteLanguage (SaLanguage language, DbUpdateInfo dbUpdateInfo);

		//-------------------------------------------------------------------
		// Language list.
		public abstract ColumnDfn GetLanguageColumnDfn (SaLanguage.Column columnId, String caption = "", int width = 0);
		public abstract List<String> GetLanguageQueryFilter (SaLanguage.Params prm);
		public abstract long GetLanguageCount (SaLanguage.Params prm);
		public abstract List<SaLanguage> GetLanguageList (SaLanguage.Params prm);
		public abstract DbResultSet ExecuteLanguageQuery (List<ColumnDfn> columns, SaLanguage.Params prm);

		//-------------------------------------------------------------------
		/// <summary>
		/// Extract and format result set data value where specific handling is required.
		/// <para>Where response is an invalid data value, format value using column.FormatValue(values).</para>
		/// </summary>
		public virtual DataValue GetLanguageDataValue (ColumnDfn column, NamedValue.Map values)
		{
			DataValue value = new DataValue();
			switch ((SaLanguage.Column)column.Id)
			{
				//-----------------------------------------------------------
				// Default.
				default:
					break;

				//-----------------------------------------------------------
			}
			return value;
		}

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