using System.Diagnostics.Contracts;
using Deltares.Geotechnics;
using Deltares.Geotechnics.Soils;
using Deltares.Standard;
using Deltares.Standard.Language;
using Deltares.Standard.Validation;

namespace Deltares.Stability
{
    /// <summary>
    /// Repairer for <see cref="StabilityModel"/>.<see cref="StabilityModel.PreConsolidationStressList"/>
    /// to add new data point if no data available.
    /// </summary>
    public class MissingPreconsolidationStressRepairer : IRepairer
    {
        /// <summary>
        /// <see cref="ValidationResult.ID"/> for <see cref="ValidationResult"/> in case
        /// no preconsolidation data is available while being required.
        /// </summary>
        public const string NoPreconsolidationStressDataId = "NO_PRE_CON_DATA";

        public void Repair(object subject, string property, string id)
        {
            CheckPreconditions(subject, property, id);

            var model = (StabilityModel) subject;

            if (model.SoilProfile.PreconsolidationStresses.Count == 0)
            {
                model.SoilProfile.PreconsolidationStresses.Add(new PreConsolidationStress());
            }
        }

        public string GetRepairDescription(object subject, string property, string id)
        {
            CheckPreconditions(subject, property, id);

            return this.Translate("MissingPreconsolidationStressRepairerDescription");
        }

        /// <summary>
        /// Checks the preconditions for this class.
        /// </summary>
        /// <param name="subject">The object to be repaired.</param>
        /// <param name="property">The relevant property.</param>
        /// <param name="id">The identifier for the type of problem.</param>
        private static void CheckPreconditions(object subject, string property, string id)
        {
            Contract.Requires(subject is StabilityModel);
            Contract.Requires(id == NoPreconsolidationStressDataId);
        }
    }
}