using System;

namespace LinFu.Finders.Interfaces
{
    /// <summary>
    ///     Represents a class that describes the search criteria
    ///     for a given item <typeparamref name="T">type</typeparamref>.
    /// </summary>
    /// <typeparam name="T">The target item type.</typeparam>
    public interface ICriteria<T>
    {
        /// <summary>
        ///     Gets or sets a value indicating the <see cref="CriteriaType" />
        ///     of the current <see cref="ICriteria{T}" />.
        /// </summary>
        CriteriaType Type { get; set; }

        /// <summary>
        ///     The condition that will determine whether or not
        ///     the target item matches the criteria.
        /// </summary>
        Func<T, bool> Predicate { get; }

        /// <summary>
        ///     Gets or sets a value indicating the weight of the given <see cref="Predicate" />.
        /// </summary>
        int Weight { get; set; }
    }
}