namespace NucuCar.Sensors.Environment.Bmxx80.Units
{
    /// <summary>
    /// Structure representing pressure
    /// </summary>
    public struct Pressure
    {
        private const double MillibarRatio = 0.01;
        private const double KilopascalRatio = 0.001;
        private const double HectopascalRatio = 0.01;
        private const double InchOfMercuryRatio = 0.000295301;
        private const double MillimeterOfMercuryRatio = 0.00750062;
        private double _pascal;

        private Pressure(double pascal)
        {
            _pascal = pascal;
        }

        /// <summary>
        /// The mean sea-level pressure (MSLP) is the average atmospheric pressure at mean sea level
        /// </summary>
        public static Pressure MeanSeaLevel => Pressure.FromPascal(101325);

        /// <summary>
        /// Pressure in Pa
        /// </summary>
        public double Pascal => _pascal;

        /// <summary>
        /// Pressure in mbar
        /// </summary>
        public double Millibar => MillibarRatio * _pascal;

        /// <summary>
        /// Pressure in kPa
        /// </summary>
        public double Kilopascal => KilopascalRatio * _pascal;

        /// <summary>
        /// Pressure in hPa
        /// </summary>
        public double Hectopascal => HectopascalRatio * _pascal;

        /// <summary>
        /// Pressure in inHg
        /// </summary>
        public double InchOfMercury => InchOfMercuryRatio * _pascal;

        /// <summary>
        /// Pressure in mmHg
        /// </summary>
        public double MillimeterOfMercury => MillimeterOfMercuryRatio * _pascal;

        /// <summary>
        /// Creates Pressure instance from pressure in Pa
        /// </summary>
        /// <param name="value">Pressure value in Pa</param>
        /// <returns>Pressure instance</returns>
        public static Pressure FromPascal(double value)
        {
            return new Pressure(value);
        }

        /// <summary>
        /// Creates Pressure instance from pressure in mbar
        /// </summary>
        /// <param name="value">Pressure value in mbar</param>
        /// <returns>Pressure instance</returns>
        public static Pressure FromMillibar(double value)
        {
            return new Pressure(value / MillibarRatio);
        }

        /// <summary>
        /// Creates Pressure instance from pressure in kPa
        /// </summary>
        /// <param name="value">Pressure value in kPa</param>
        /// <returns>Pressure instance</returns>
        public static Pressure FromKilopascal(double value)
        {
            return new Pressure(value / KilopascalRatio);
        }

        /// <summary>
        /// Creates Pressure instance from pressure in hPa
        /// </summary>
        /// <param name="value">Pressure value in hPa</param>
        /// <returns>Pressure instance</returns>
        public static Pressure FromHectopascal(double value)
        {
            return new Pressure(value / HectopascalRatio);
        }

        /// <summary>
        /// Creates Pressure instance from pressure in inHg
        /// </summary>
        /// <param name="value">Pressure value in inHg</param>
        /// <returns>Pressure instance</returns>
        public static Pressure FromInchOfMercury(double value)
        {
            return new Pressure(value / InchOfMercuryRatio);
        }

        /// <summary>
        /// Creates Pressure instance from pressure in mmHg
        /// </summary>
        /// <param name="value">Pressure value in mmHg</param>
        /// <returns>Pressure instance</returns>
        public static Pressure FromMillimeterOfMercury(double value)
        {
            return new Pressure(value / MillimeterOfMercuryRatio);
        }
    }
}