// Copyright (C) Stichting Deltares 2024. All rights reserved.
// 
// This file is part of the application DAM - UI.
// 
// DAM - UI 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 System.Globalization;
using System.IO;
using System.Threading;
using Deltares.Dam.Data.Importers;
using Deltares.Standard.IO;
using Deltares.Standard.Language;
using LumenWorks.Framework.IO.Csv;

namespace Deltares.Dam.Data.CsvImporters;

public class CsvImporterSigmaTauCurvesException : Exception
{
    public CsvImporterSigmaTauCurvesException(string message) : base(message)
    {
    }
}

public class CsvImporterSigmaTauCurves
{
    private readonly int currentColIndex = -1; // Keep track of column for error message

    public CsvImporterSigmaTauCurves(string fileName)
    {
        ErrorMessages.Clear();
        ThrowHelper.ThrowIfStringArgumentNullOrEmpty(fileName, StringResourceNames.CsvFileNotValid);
        ThrowHelper.ThrowIfFileNotExist(fileName, StringResourceNames.CsvFileNotFound);
        CultureInfo oldCultureInfo = Thread.CurrentThread.CurrentCulture;
        try
        {
            Thread.CurrentThread.CurrentCulture = CsvReaderUtilities.DetermineCultureForFile(fileName);
            using (var csv = new CsvReader(new StreamReader(fileName), true, ';'))
            {
                string[] headers = CsvImporterHelper.GetFieldHeaders(this, csv);
                if (headers.Length < 2)
                {
                    string csvHeaderError = LocalizationManager.GetTranslatedText(GetType(), "csvHeaderError");
                    throw new CsvImporterSoilsException($"{fileName} : {csvHeaderError}");
                }

                int colIndexSigmaTauCurveName = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.SigmaTauCurveNameColumnName);
                CheckColumn(colIndexSigmaTauCurveName, fileName, CsvColumnNames.SoilNameColumnName);

                int colIndexSigma = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.SigmaColumnName);
                CheckColumn(colIndexSigma, fileName, CsvColumnNames.SigmaColumnName);

                int colIndexTau = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.TauColumnName);
                CheckColumn(colIndexTau, fileName, CsvColumnNames.TauColumnName);

                while (csv.ReadNextRecord())
                {
                    var sigmaTauCurveRecord = new SigmaTauCurveRecord();
                    try
                    {
                        // Required columns
                        currentColIndex = colIndexSigmaTauCurveName;
                        sigmaTauCurveRecord.SigmaTauCurveName = csv[currentColIndex];

                        currentColIndex = colIndexSigma;
                        sigmaTauCurveRecord.Sigma = Convert.ToDouble(csv[currentColIndex]);

                        currentColIndex = colIndexTau;
                        sigmaTauCurveRecord.Tau = Convert.ToDouble(csv[currentColIndex]);

                        ImportedItems.Add(sigmaTauCurveRecord);
                    }
                    catch (Exception e)
                    {
                        string csvSigmaTauCurveError = string.Format(LocalizationManager.GetTranslatedText(GetType(), "csvSigmaTauCurveError"),
                                                                     sigmaTauCurveRecord.SigmaTauCurveName, currentColIndex + 1);
                        ErrorMessages.Add(csvSigmaTauCurveError + e.Message);
                    }
                }
            }
        }
        finally
        {
            Thread.CurrentThread.CurrentCulture = oldCultureInfo;
        }
    }

    public List<string> ErrorMessages { get; } = new();
    public List<SigmaTauCurveRecord> ImportedItems { get; } = new();

    private void CheckColumn(int index, string fileName, string fieldName)
    {
        if (index < 0)
        {
            string csvHeaderFieldError = LocalizationManager.GetTranslatedText(GetType(), "csvHeaderFieldError");
            throw new CsvImporterSigmaTauCurvesException($"{fileName} : {csvHeaderFieldError} {fieldName}");
        }
    }

    public class SigmaTauCurveRecord
    {
        public string SigmaTauCurveName { get; set; }
        public double Sigma { get; set; }
        public double Tau { get; set; }
    }
}