using System;
using System.Collections.Generic;
using System.Linq;

namespace DatabaseExport
{
    public class TestEngineerDetails
    {
        private readonly ISO.TestEngineerDetails _testEngineerDetails;
        public string Name
        {
            get => _testEngineerDetails.Name;
            set => _testEngineerDetails.Name = value;
        }
        public TestEngineerDetails()
        {
            _testEngineerDetails = new ISO.TestEngineerDetails();
            _testEngineerDetails.Name = "(none)"; // Strings.StringResources.TestTemplate_EmptyListName;
        }
        public TestEngineerDetails(ISO.TestEngineerDetails testEngineerDetails)
        {
            _testEngineerDetails = new ISO.TestEngineerDetails(testEngineerDetails);
        }
        public ISO.TestEngineerDetails GetISOTestEngineer()
        {
            return _testEngineerDetails;
        }
        public override string ToString()
        {
            return Name;
        }
    }
    public class TestEngineerDetailsList
    {
        private static TestEngineerDetailsList _testEngineerList = new TestEngineerDetailsList();
        public static TestEngineerDetailsList TestEngineerList => _testEngineerList;
        private static object _testEngineerLock = new object();
        private Dictionary<string, TestEngineerDetails> _testEngineers = null;
        public TestEngineerDetails[] TestEngineers
        {
            get
            {
                lock (_testEngineerLock)
                {
                    if (null == _testEngineers)
                    {
                        PopulateEngineers();
                    }
                }
                var testEngineers = new List<TestEngineerDetails>(_testEngineers.Values);
                testEngineers.Sort(CompareTestEngineers);
                return testEngineers.ToArray();
            }
        }
        private void PopulateEngineers()
        {
            _testEngineers = new Dictionary<string, TestEngineerDetails>();
            foreach (var t in _testEngineerList.GetAllTestEngineers())
            {
                if (!_testEngineers.ContainsKey(t.Name)) { _testEngineers.Add(t.Name, t); }
            }
        }
        private static int CompareTestEngineers(TestEngineerDetails a, TestEngineerDetails b)
        {
            if (a == b) { return 0; }
            if (null == a) { return -1; }
            if (null == b) { return 1; }
            return a.Name.CompareTo(b.Name);
        }

        private TestEngineerDetails[] GetAllTestEngineers()
        {
            var list = new List<TestEngineerDetails>();
            list.Add(new TestEngineerDetails()); //This is the "(none)" entry
            foreach (var ts in ISO.TestEngineerDetails.GetAllTestEngineerDetails())
            {
                list.Add(new TestEngineerDetails(ts));
            }
            return list.ToArray();
        }
        public TestEngineerDetails GetTestEngineerDetail(string name)
        {
            var testEngineers = from t in TestEngineers.AsParallel() where t.Name == name select t;
            if (null != testEngineers && testEngineers.Count() > 0) { return testEngineers.First(); }
            return null;
        }
    }
}