using System.IO;

namespace fis.Vid.Visuals
{
    public enum VinnoUnit
    {
        None = 0,
        percent = 1,
        cm = 10,
        mm = 11,
        inch = 12,
        ft = 13,
        s = 20,
        minute = 21,
        hour = 22,
        day = 23,
        week = 24,
        week_day = 25,
        Tick = 26,
        msec = 27,
        degree = 30,
        radian = 31,
        g = 40,
        mg = 41,
        ng = 42,
        kg = 43,
        oz = 44,
        lb = 45,
        cm2 = 50,
        mm2 = 51,
        m2 = 52,
        cm3 = 60,
        mm3 = 61,
        ml = 62,
        L = 63,
        cms = 70,
        mms = 71,
        ms = 72,
        cms2 = 80,
        mms2 = 81,
        cm3s = 90,
        mls = 91,
        mlmin = 92,
        Lmin = 93,
        gcm3 = 100,
        gml = 101,
        ngml = 102,
        mmHg = 110,

        mV = 120,
        Hz = 130,
        KHz = 131,
        /// <summary>
        ///  beats per minute
        /// </summary>
        HR = 132,

        //SI
        cm3m2 = 140,
        mlm2 = 141,

        //CI
        cm3sm2 = 150,
        mlsm2 = 151,
        cm3minm2 = 153,
        mlminm2 = 154,
        Lminm2 = 155,

        /// <summary>
        /// MVCF:mean velocity of circumferential fiber shortening
        /// </summary>
        circs = 160,

        //CO 
        mlbeat = 170,

        mm2pa = 180,

        d1mpa = 181,

        kpa = 182,

        mmHgs = 190,

        gm2 = 200,

        /// AVA Index
        cm2m2 = 210
    }

    public class VinnoLogicalCoordinate
    {
        public bool IsFlipHorizontal { get; }

        public bool IsFlipVertical { get; }

        public VinnoRect Region { get; }

        public VinnoUnit XUnit { get; }

        public VinnoUnit YUnit { get; }

        public VinnoLogicalCoordinate(bool isFlipHorizontal, bool isFlipVertical, VinnoRect region, VinnoUnit xUnit, VinnoUnit yUnit)
        {
            YUnit = yUnit;
            XUnit = xUnit;
            Region = region;
            IsFlipVertical = isFlipVertical;
            IsFlipHorizontal = isFlipHorizontal;
        }

        public byte[] ToBytes()
        {
            byte[] result;
            using (var stream = new MemoryStream())
            {
                var writer = new VinnoStreamWriter(stream);
                writer.WriteBool(IsFlipHorizontal);
                writer.WriteBool(IsFlipVertical);
                writer.WriteByte((byte)XUnit);
                writer.WriteByte((byte)YUnit);
                writer.WriteDouble(Region.Left);
                writer.WriteDouble(Region.Top);
                writer.WriteDouble(Region.Right);
                writer.WriteDouble(Region.Bottom);
                result = stream.ToArray();
            }
            return result;
        }

        public static VinnoLogicalCoordinate FromBytes(byte[] bytes)
        {
            VinnoLogicalCoordinate result;
            using (var stream = new MemoryStream(bytes))
            {
                stream.Position = 0;
                var reader = new VinnoStreamReader(stream);
                var isFlipHorizontal = reader.ReadBool();
                var isFlipVertical = reader.ReadBool();
                var xUnit = (VinnoUnit)reader.ReadByte();
                var yUnit = (VinnoUnit)reader.ReadByte();
                var left = reader.ReadDouble();
                var top = reader.ReadDouble();
                var right = reader.ReadDouble();
                var bottom = reader.ReadDouble();
                var region = new VinnoRect(new VinnoPoint(left, top), new VinnoPoint(right, bottom));
                result = new VinnoLogicalCoordinate(isFlipHorizontal,isFlipVertical,region,xUnit,yUnit);
            }
            return result;
        }
    }
}