using System;
using System.Windows;

namespace DatabaseImport
{
    public class TestObjectTemplateCollection //: BasePropertyChanged
    {
        private static volatile TestObjectTemplateCollection _testObjectCollection;
        public static TestObjectTemplateCollection TemplateCollection
        {
            get
            {
                if (null == _testObjectCollection)
                {
                    _testObjectCollection = new TestObjectTemplateCollection();
                }
                return _testObjectCollection;
            }
        }

        public void ReloadAll(bool loadSubComponents)
        {
            //UnloadAll();
            //if (loadSubComponents)
            //{
            //    (App.Current as App).IsoDb.RefreshAllData();
            //    DataModel.CustomChannelList.List.ReloadAll();
            //}
            //Reload();
        }
        private static volatile TestObjectTemplate _sysBuiltTestObjectTemplate;
        public TestObjectTemplate SysBuiltTestObjectTemplate => _sysBuiltTestObjectTemplate;

        public TestObjectTemplate GetTemplate(string templateId)
        {
            var db = ((App)Application.Current).IsoDb;
            var isoTemplate = ISO.TestObjectTemplate.GetTemplate(ref db, templateId);
            return null != isoTemplate ? new TestObjectTemplate(isoTemplate, ref db) : null;
        }
        /// <summary>
        /// deletes all test objects
        /// originally created so TDM imports could clear all tables
        /// </summary>
        public static void DeleteAll()
        {
            //if (TemplateCollection._bUnloaded) { Reload(); }
            _testObjectCollection.DeleteAllTemplates();
            _testObjectCollection = new TestObjectTemplateCollection();
            TemplateCollection.DeleteAllTemplates();
            //TemplateCollection._templates.Clear();            
        }
        private void DeleteAllTemplates()
        {
            try
            {
                //if (_bUnloaded) { Reload(); }
                ISO.TestObjectTemplate.DeleteAllTemplates();
            }
            catch (Exception) { /*APILogger.Log("failed to delete all templates"); */}
        }
    }
}