// Copyright (C) Stichting Deltares 2023. All rights reserved.
// 
// This file is part of the Dam Engine.
// 
// The Dam Engine is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// 
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
// 
// All names, logos, and references to "Deltares" are registered trademarks of
// Stichting Deltares and remain full property of Stichting Deltares at all times.
// All rights reserved.

namespace Deltares.DamEngine.Data.General.Specifications;

public class OrSpecification<TCandidate> : CompositeSpecification<TCandidate>
{
    private readonly ISpecification<TCandidate> one;
    private readonly ISpecification<TCandidate> other;

    public OrSpecification(ISpecification<TCandidate> one, ISpecification<TCandidate> other)
    {
        this.one = one;
        this.other = other;
    }

    /// <summary>
    /// Determines whether the candidate satisfies the specification.
    /// </summary>
    /// <param name="candidate">The candidate to test.</param>
    /// <returns>
    ///   <c>true</c> if the candidate satisfies the specification otherwise, <c>false</c>.
    /// </returns>
    public override bool IsSatisfiedBy(TCandidate candidate)
    {
        bool otherIsSatisfiedBy = other.IsSatisfiedBy(candidate);
        bool thisIsSatisfiedBy = one.IsSatisfiedBy(candidate);

        bool isSatisfied = (thisIsSatisfiedBy || otherIsSatisfiedBy);
        if (!isSatisfied)
        {
            Description = "This " + one.Description + " OR " + other.Description + " are not satisfied";
        }

        return isSatisfied;
    }
}