namespace Chernobyl.Calculator
{
    /// <summary>
    /// A version of an ICalculator that can perform
    /// calculations on ints.
    /// </summary>
    public struct IntCalculator : ICalculator<int>
    {
        /// <summary>
        /// Adds one int to another.
        /// </summary>
        /// <param name="left">The left side of the addition operation.</param>
        /// <param name="right">The right side of the addition operation.</param>
        /// <returns>The result of the addition.</returns>
        public int Add(int left, int right)
        {
            return left + right;
        }

        /// <summary>
        /// Subtracts one int from another.
        /// </summary>
        /// <param name="left">The left side of the subtraction operation.</param>
        /// <param name="right">The right side of the subtraction operation.</param>
        /// <returns>The result of the subtraction.</returns>
        public int Subtract(int left, int right)
        {
            return left - right;
        }

        /// <summary>
        /// Divides two ints.
        /// </summary>
        /// <param name="dividend">The dividend.</param>
        /// <param name="divisor">The divisor.</param>
        /// <returns>The result of the divide.</returns>
        public int Divide(int dividend, int divisor)
        {
            return dividend / divisor;
        }

        /// <summary>
        /// Multiplies two ints together.
        /// </summary>
        /// <param name="left">The left side of the multiplication operation.</param>
        /// <param name="right">The right side of the multiplication operation.</param>
        /// <returns>The result of the multiplication.</returns>
        public int Multiply(int left, int right)
        {
            return left * right;
        }

        /// <summary>
        /// Negates a int.
        /// </summary>
        /// <param name="item">The int to negate.</param>
        /// <returns>The result of the negation.</returns>
        public int Negate(int item)
        {
            return -item;
        }

        /// <summary>
        /// Compares two ints.
        /// </summary>
        /// <param name="left">The left side of the comparison operation.</param>
        /// <param name="right">The right side of the comparison operation.</param>
        /// <returns>True if the two are the same, false if otherwise.</returns>
        public bool Compare(int left, int right)
        {
            return (left == right);
        }
    }
}