using System;
using System.Globalization;
using System.Windows.Data;
using DTS.Common.Enums;
using DTS.Common.Enums.DASFactory;

namespace DTS.Common.Converters
{
    public class TestDataToRegionOfInterestMinimumConverter : IMultiValueConverter
    {
        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
        {
            //values: DataStart, DataEnd, PreTrigger, PostTrigger, RecordingMode
            if (values.Length == 5 && values[2] is double preTrigger && values[3] is double postTrigger &&
                    values[4] is RecordingModes recordingMode)
            {
                if (RecordingModeExtensions.IsAHybridRecorderMode((RecordingModes)values[4]) &&
                    values[0] is double d && d == double.MinValue)
                {
                    return double.NegativeInfinity;
                }
                switch (recordingMode)
                {
                    case RecordingModes.CircularBuffer:
                    case RecordingModes.RAMActive:
                    case RecordingModes.MultipleEventRAMActive:
                    case RecordingModes.MultipleEventCircularBuffer:
                    case RecordingModes.CircularBufferPlusUART:
                    case RecordingModes.MultipleEventCircularBufferPlusUART:
                    case RecordingModes.CircularBufferAndStreamSubSample:
                    case RecordingModes.MultipleEventCircularBufferAndStream:
                        //minimum is -PreTrigger
                        return -1D * preTrigger;
                    case RecordingModes.Recorder:
                    case RecordingModes.RecorderPlusUART:
                    case RecordingModes.HybridRecorder:
                    case RecordingModes.HybridAndStream:
                    case RecordingModes.MultipleEventHybridAndStream:
                    case RecordingModes.MultipleEventHybridRecorder:
                    case RecordingModes.MultipleEventRecorder:
                    case RecordingModes.MultipleEventRecorderPlusUART:
                    case RecordingModes.ContinuousRecorder:
                    case RecordingModes.ContinuousRecorderPlusUART:
                    case RecordingModes.RecordOnBoot:
                    case RecordingModes.RecordOnBootPlusUART:
                    case RecordingModes.RecorderAndStreamSubSample:
                    case RecordingModes.MultipleEventRecorderAndStream:
                    case RecordingModes.Active:
                    case RecordingModes.MultipleEventActive:
                        // FB16465: minimum is DataStart. if it's currently unknown, return -PostTrigger
                        // FB17991: could also be set to Min instead of unknown, same difference
                        return values[0] is double recStart ? recStart > double.MinValue ? recStart : -1D * postTrigger : -1D * postTrigger;
                }
            }
            return double.NegativeInfinity;
        }

        public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}