using DTS.Common.Enums.TestSetups.TestSetupList;
using DTS.Common.Interface.TestSetups.TestSetupsList;
using System;
using System.Collections.Generic;

namespace TestSetupsList.Model
{
    public class TestSetupComparer : IComparer<ITestSetup>
    {
        public TestSetupFields SortField { get; set; } = TestSetupFields.Name;
        public bool SortAscending { get; set; } = true;

        public int Compare(ITestSetup left, ITestSetup right)
        {
            if (left == right)
            {
                return 0;
            }
            var a = left;
            var b = right;
            if (!SortAscending)
            {
                a = right;
                b = left;
            }
            if (a == b)
            {
                return 0;
            }
            if (null == a)
            {
                return -1;
            }
            if (null == b)
            {
                return 1;
            }
            switch (SortField)
            {
                case TestSetupFields.Name:
                    return string.Compare(a.Name, b.Name, StringComparison.OrdinalIgnoreCase);
                case TestSetupFields.Description:
                    return string.Compare(a.Description, b.Description, StringComparison.OrdinalIgnoreCase);
                case TestSetupFields.RecordingMode:
                    return a.RecordingMode.CompareTo(b.RecordingMode);
                case TestSetupFields.PreTriggerSeconds:
                    return a.PreTriggerSeconds.CompareTo(b.PreTriggerSeconds);
                case TestSetupFields.PostTriggerSeconds:
                    return a.PostTriggerSeconds.CompareTo(b.PostTriggerSeconds);
                case TestSetupFields.LastModified:
                    return a.LastModified.CompareTo(b.LastModified);
                case TestSetupFields.LastModifiedBy:
                    return string.Compare(a.LastModifiedBy, b.LastModifiedBy, StringComparison.OrdinalIgnoreCase);
                case TestSetupFields.IsComplete:
                    return a.IsComplete.CompareTo(b.IsComplete);
            }
            return a.GetHashCode().CompareTo(b.GetHashCode());
        }
    }
}