using System;

namespace OpenMacroBoard.SDK
{
    /// <summary>
    /// Represents a color value.
    /// </summary>
    public readonly partial struct OmbColor : IEquatable<OmbColor>
    {
        private OmbColor(byte r, byte g, byte b)
        {
            R = r;
            G = g;
            B = b;
        }

        /// <summary>
        /// The red part of the color.
        /// </summary>
        public byte R { get; }

        /// <summary>
        /// The green part of the color.
        /// </summary>
        public byte G { get; }

        /// <summary>
        /// The blue part of the color.
        /// </summary>
        public byte B { get; }

        /// <summary>
        /// Checks whether two <see cref="OmbColor"/> structures are equal.
        /// </summary>
        /// <param name="left">The left hand <see cref="OmbColor"/> operand.</param>
        /// <param name="right">The right hand <see cref="OmbColor"/> operand.</param>
        /// <returns>
        /// True if the <paramref name="left"/> parameter is equal to the <paramref name="right"/> parameter;
        /// otherwise, false.
        /// </returns>
        public static bool operator ==(OmbColor left, OmbColor right)
        {
            return left.Equals(right);
        }

        /// <summary>
        /// Checks whether two <see cref="OmbColor"/> structures are equal.
        /// </summary>
        /// <param name="left">The left hand <see cref="OmbColor"/> operand.</param>
        /// <param name="right">The right hand <see cref="OmbColor"/> operand.</param>
        /// <returns>
        /// True if the <paramref name="left"/> parameter is not equal to the <paramref name="right"/> parameter;
        /// otherwise, false.
        /// </returns>
        public static bool operator !=(OmbColor left, OmbColor right)
        {
            return !left.Equals(right);
        }

        /// <summary>
        /// Creates a <see cref="OmbColor"/> from RGB bytes.
        /// </summary>
        /// <param name="r">The red component (0-255).</param>
        /// <param name="g">The green component (0-255).</param>
        /// <param name="b">The blue component (0-255).</param>
        /// <returns>The <see cref="OmbColor"/>.</returns>
        public static OmbColor FromRgb(byte r, byte g, byte b)
        {
            return new OmbColor(r, g, b);
        }

        /// <inheritdoc />
        public override string ToString()
        {
            return $"#{R:X2}{G:X2}{B:X2}";
        }

        /// <inheritdoc />
        public bool Equals(OmbColor other)
        {
            return
                R == other.R &&
                G == other.G &&
                B == other.B;
        }

        /// <inheritdoc />
        public override bool Equals(object obj)
        {
            return obj is OmbColor other && Equals(other);
        }

        /// <inheritdoc />
        public override int GetHashCode()
        {
            return HashCode.Combine(R, G, B);
        }
    }
}