using AsbCloudDb.Model;
using System.Linq;

namespace AsbCloudInfrastructure.Services.DetectOperations.Detectors
{
#nullable enable
    class DetectorDrillingSlide : DetectorAbstract
    {
        const double minRop = 5; //м/час
        const double minRotorSpeed = 5; //об/мин
        const double ticksPerHour = 60 * 60 * 10_000_000d;
        const double minPressure = 25;

        public DetectorDrillingSlide() : base(3)
        {
            FragmentLength = 10;
        }

        protected override bool DetectStart(DetectableTelemetry[] telemetry, int position)
        {
            var firstItem = telemetry[position];
            var deltaDepth = firstItem.WellDepth - firstItem.BitDepth;
            if (deltaDepth is not null &&
                System.Math.Abs((float)deltaDepth) > 1d)
                return false;

            if(firstItem.RotorSpeed < minRotorSpeed)
                return false;

            if (firstItem.Pressure < minPressure)
                return false;

            var fragment = telemetry[position..(position + FragmentLength)];

            var lineBlockPosition = new InterpolationLine(fragment.Select(d => (d.BlockPosition ?? 0d, d.DateTime.Ticks / ticksPerHour)));
            if (!lineBlockPosition.IsYDecreases(minRop))
                return false;

            var lineWellDepth = new InterpolationLine(fragment.Select(d => (d.WellDepth ?? 0d, d.DateTime.Ticks / ticksPerHour)));
            if (!lineWellDepth.IsYIncreases(minRop))
                return false;

            return true;
        }

        protected override bool DetectEnd(DetectableTelemetry[] telemetry, int position)
            => !DetectStart(telemetry, position);

        /// <summary>
        /// Рассчитываем МСП, м/час
        /// </summary>
        /// <param name="result"></param>
        protected override void CalcValue(ref DetectedOperation result)
        {
            result.Value = (result.DepthEnd - result.DepthStart) / (result.DateEnd - result.DateStart).TotalHours;
        }
    }
#nullable disable
}