// Copyright (C) Stichting Deltares 2016. All rights reserved.
//
// This file is part of Ringtoets.
//
// Ringtoets is free software: you can redistribute it and/or modify
// it under the terms of the GNU 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 General Public License for more details.
//
// You should have received a copy of the GNU 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.

using System;
using System.Collections.Generic;
using Ringtoets.HydraRing.Calculation.Data.Output;
using Ringtoets.HydraRing.Calculation.Exceptions;
using Ringtoets.HydraRing.Calculation.Properties;

namespace Ringtoets.HydraRing.Calculation.Parsers
{
    /// <summary>
    /// Parser for the reliability index of failure of Hydra-Ring calculations.
    /// </summary>
    public class ReliabilityIndexCalculationParser : IHydraRingFileParser
    {
        private const string sectionIdParameterName = "@sectionId";
        private const string betaColumnName = "BetaValue";
        private const string valueColumnName = "Value";

        private readonly string query = $"SELECT {betaColumnName}, {valueColumnName} " +
                                        "FROM IterateToGivenBetaConvergence " +
                                        $"WHERE SectionId = {sectionIdParameterName} " +
                                        "ORDER BY OuterIterationId DESC " +
                                        "LIMIT 1;";

        /// <summary>
        /// Gets a <see cref="ReliabilityIndexCalculationOutput"/> 
        /// corresponding to the section id if <see cref="Parse"/> executed successfully; or <c>null</c> otherwise.
        /// </summary>
        public ReliabilityIndexCalculationOutput Output { get; private set; }

        public void Parse(string workingDirectory, int sectionId)
        {
            Dictionary<string, object> result = HydraRingDatabaseParseHelper.ReadSingleLine(
                workingDirectory,
                query,
                sectionId,
                Resources.ReliabilityIndexCalculationParser_Parse_No_reliability_found_in_output_file);

            ReadResult(result);
        }

        /// <summary>
        /// Reads the <paramref name="result"/>.
        /// </summary>
        /// <param name="result">The result from the database read.</param>
        /// <exception cref="HydraRingFileParserException">Thrown when the result
        /// cannot be converted to the output format.</exception>
        private void ReadResult(IDictionary<string, object> result)
        {
            try
            {
                Output = new ReliabilityIndexCalculationOutput(
                    Convert.ToDouble(result[valueColumnName]),
                    Convert.ToDouble(result[betaColumnName]));
            }
            catch (InvalidCastException e)
            {
                throw new HydraRingFileParserException(Resources.ReliabilityIndexCalculationParser_Parse_No_reliability_found_in_output_file, e);
            }
        }
    }
}