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

namespace DTS.Common.Converters
{
    public class TestDataToRegionOfInterestMaximumConverter : IMultiValueConverter
    {
        public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
        {
            //values: dataStart, dataEnd, PreTrigger, PostTrigger, RecordingMode
            if (values.Length == 5)
            {
                if (values[2] is double && values[3] is double postTrigger &&
                    values[4] is RecordingModes recordingMode)
                {
                    switch (recordingMode)
                    {
                        case RecordingModes.CircularBuffer:
                        case RecordingModes.RAMActive:
                        case RecordingModes.MultipleEventRAMActive:
                        case RecordingModes.CircularBufferAndStreamSubSample:
                        case RecordingModes.CircularBufferPlusUART:
                        case RecordingModes.MultipleEventCircularBuffer:
                        case RecordingModes.MultipleEventCircularBufferPlusUART:
                            //maximum is PostTrigger
                            return postTrigger;
                        case RecordingModes.Recorder:
                        case RecordingModes.RecorderPlusUART:
                        case RecordingModes.MultipleEventRecorder:
                        case RecordingModes.MultipleEventRecorderPlusUART:
                        case RecordingModes.HybridRecorder:
                        case RecordingModes.HybridAndStream:
                        case RecordingModes.MultipleEventHybridAndStream:
                        case RecordingModes.MultipleEventHybridRecorder:
                        case RecordingModes.ContinuousRecorder:
                        case RecordingModes.ContinuousRecorderPlusUART:
                        case RecordingModes.RecordOnBoot:
                        case RecordingModes.RecordOnBootPlusUART:
                        case RecordingModes.RecorderAndStreamSubSample:
                        case RecordingModes.MultipleEventRecorderAndStream:
                            // FB16465: maximum is DataEnd. if it's currently unknown, return PostTrigger
                            // FB17991: could also be set to Max instead of unknown, same difference
                        case RecordingModes.Active:
                        case RecordingModes.MultipleEventActive:
                            // FB18333: max holds for Active too.
                            return values[1] is double end ? end < double.MaxValue ? end : postTrigger : postTrigger;
                    }
                }
            }
            return double.PositiveInfinity;
        }

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