// Copyright (C) Stichting Deltares 2025. 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.Linq;
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 CsvImporterScenariosException : Exception
{
    public CsvImporterScenariosException(string message)
        : base(message) {}
}

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

    public CsvImporterScenarios(string fileName)
    {
        ErrorMessages.Clear();
        ThrowHelper.ThrowIfStringArgumentNullOrEmpty(fileName, StringResourceNames.CsvFileNotValid);
        ThrowHelper.ThrowIfFileNotExist(fileName, StringResourceNames.CsvFileNotFound);

        CultureInfo oldcur = 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.Count() < 2)
                {
                    string csvHeaderError = LocalizationManager.GetTranslatedText(GetType(), "csvHeaderError");
                    throw new CsvImporterSegmentsException($"{fileName} : {csvHeaderError}");
                }

                const string fieldLocationId = CsvColumnNames.LocationColumnName;
                int colIndexLocationId = CsvReaderUtilities.GetHeaderIndexByString(headers, fieldLocationId);
                CheckColumn(colIndexLocationId, fileName, fieldLocationId);

                const string fieldLocationScenarioId = CsvColumnNames.LocationScenarioColumnName;
                int colIndexLocationScenarioId = CsvReaderUtilities.GetHeaderIndexByString(headers, fieldLocationScenarioId);
                CheckColumn(colIndexLocationScenarioId, fileName, fieldLocationScenarioId);

                int colIndexRiverLevel = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.RiverLevelColumnName);
                int colIndexRiverLevelLow = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.RiverLevelLowColumnName);
                int colIndexDikeTableHeight = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.DikeTableHeightColumnName);

                int colIndexSafetyFactorPiping = CsvReaderUtilities.GetHeaderIndexByString(headers, ModelFactorCsvIdentifiers.SafetyFactorPiping);
                int colIndexSafetyFactorStabilityInnerSlope = CsvReaderUtilities.GetHeaderIndexByString(headers, ModelFactorCsvIdentifiers.SafetyFactorStabilityInnerslope);
                int colIndexSafetyFactorStabilityOuterSlope = CsvReaderUtilities.GetHeaderIndexByString(headers, ModelFactorCsvIdentifiers.SafetyFactorStabilityOuterslope);
                int colIndexUpliftCriterionPiping = CsvReaderUtilities.GetHeaderIndexByString(headers, ModelFactorCsvIdentifiers.UpliftCriterionPiping);
                int colIndexUpliftCriterionStability = CsvReaderUtilities.GetHeaderIndexByString(headers, ModelFactorCsvIdentifiers.UpliftCriterionStability);

                int colIndexPlLineOffsetBelowDikeTopAtRiver = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.PlLineOffsetBelowDikeTopAtRiverColumnName);
                int colIndexPlLineOffsetBelowDikeTopAtPolder = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.PlLineOffsetBelowDikeTopAtPolderColumnName);
                int colIndexPlLineOffsetBelowShoulderBaseInside = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.PlLineOffsetBelowShoulderBaseInsideColumnName);
                int colIndexPlLineOffsetBelowDikeToeAtPolder = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.PlLineOffsetBelowDikeToeAtPolderColumnName);
                int colIndexPlLineOffsetBelowDikeCrestMiddle = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.PlLineOffsetBelowDikeCrestMiddleColumnName);
                int colIndexPlLineOffsetFactorBelowShoulderCrest = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.PlLineOffsetFactorBelowShoulderCrestColumnName);
                int colIndexUsePlLineOffsetBelowDikeCrestMiddle = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.UsePlLineOffsetBelowDikeCrestMiddleColumnName);
                int colIndexUsePlLineOffsetFactorBelowShoulderCrest = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.UsePlLineOffsetFactorBelowShoulderCrestColumnName);
                int colIndexHeadPl3 = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.HeadPl3ColumnName);
                int colIndexHeadPl4 = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.HeadPl4ColumnName);
                int colIndexHeadPl3OldFormat = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.HeadPl3OldFormatColumnName);
                int colIndexHeadPl4OldFormat = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.HeadPl4OldFormatColumnName);
                int colIndexPolderLevel = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.PolderLevelColumnName);
                int colIndexHeadPl2 = CsvReaderUtilities.GetHeaderIndexByString(headers, CsvColumnNames.HeadPl2ColumnName);

                var index = 1;
                while (csv.ReadNextRecord())
                {
                    var scenario = new ScenarioRecord();
                    try
                    {
                        scenario.ScenarioRecordId = index;
                        index++;

                        scenario.LocationId = csv[colIndexLocationId];

                        // faassen: changed location scenario id type from int to string (default value was -1 now null is used)
                        string value = csv[colIndexLocationScenarioId];
                        scenario.LocationScenarioId = string.IsNullOrWhiteSpace(value) ? null : value;

                        scenario.RiverLevel = FetchOptionalColumnToDouble(colIndexRiverLevel, csv);
                        scenario.RiverLevelLow = FetchOptionalColumnToDouble(colIndexRiverLevelLow, csv);
                        scenario.DikeTableHeight = FetchOptionalColumnToDouble(colIndexDikeTableHeight, csv);
                        scenario.RequiredSafetyFactorPiping = FetchOptionalColumnToDouble(colIndexSafetyFactorPiping, csv);
                        scenario.RequiredSafetyFactorStabilityInnerSlope = FetchOptionalColumnToDouble(colIndexSafetyFactorStabilityInnerSlope, csv);
                        scenario.RequiredSafetyFactorStabilityOuterSlope = FetchOptionalColumnToDouble(colIndexSafetyFactorStabilityOuterSlope, csv);
                        scenario.UpliftCriterionPiping = FetchOptionalColumnToDouble(colIndexUpliftCriterionPiping, csv);
                        scenario.UpliftCriterionStability = FetchOptionalColumnToDouble(colIndexUpliftCriterionStability, csv);
                        scenario.PlLineOffsetBelowDikeTopAtRiver = FetchOptionalColumnToDouble(colIndexPlLineOffsetBelowDikeTopAtRiver, csv);
                        scenario.PlLineOffsetBelowDikeTopAtPolder = FetchOptionalColumnToDouble(colIndexPlLineOffsetBelowDikeTopAtPolder, csv);
                        scenario.PlLineOffsetBelowShoulderBaseInside = FetchOptionalColumnToDouble(colIndexPlLineOffsetBelowShoulderBaseInside, csv);
                        scenario.PlLineOffsetBelowDikeToeAtPolder = FetchOptionalColumnToDouble(colIndexPlLineOffsetBelowDikeToeAtPolder, csv);
                        scenario.PlLineOffsetBelowDikeCrestMiddle = FetchOptionalColumnToDouble(colIndexPlLineOffsetBelowDikeCrestMiddle, csv);
                        scenario.PlLineOffsetFactorBelowShoulderCrest = FetchOptionalColumnToDouble(colIndexPlLineOffsetFactorBelowShoulderCrest, csv);
                        scenario.UsePlLineOffsetBelowDikeCrestMiddle = FetchOptionalColumnToBoolean(colIndexUsePlLineOffsetBelowDikeCrestMiddle, csv);
                        scenario.UsePlLineOffsetFactorBelowShoulderCrest = FetchOptionalColumnToBoolean(colIndexUsePlLineOffsetFactorBelowShoulderCrest, csv);
                        scenario.HeadPl3 = FetchOptionalColumnToDouble(colIndexHeadPl3, csv) ?? FetchOptionalColumnToDouble(colIndexHeadPl3OldFormat, csv);
                        scenario.HeadPl4 = FetchOptionalColumnToDouble(colIndexHeadPl4, csv) ?? FetchOptionalColumnToDouble(colIndexHeadPl4OldFormat, csv);
                        scenario.PolderLevel = FetchOptionalColumnToDouble(colIndexPolderLevel, csv);
                        scenario.HeadPl2 = FetchOptionalColumnToDouble(colIndexHeadPl2, csv);

                        ImportedItems.Add(scenario);
                    }
                    catch (Exception e)
                    {
                        string csvScenarioError = string.Format(LocalizationManager.GetTranslatedText(GetType(), "csvScenarioError"), scenario.LocationId, currentColIndex + 1);
                        ErrorMessages.Add(csvScenarioError + e.Message);
                    }
                }
            }
        }
        finally
        {
            Thread.CurrentThread.CurrentCulture = oldcur;
        }
    }

    public List<ScenarioRecord> ImportedItems { get; } = new();

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

    private double? FetchOptionalColumnToDouble(int colIndex, CsvReader csv)
    {
        if (colIndex > -1)
        {
            currentColIndex = colIndex;
            return Convert.ToDouble(csv[colIndex]);
        }

        return null;
    }

    private bool? FetchOptionalColumnToBoolean(int colIndex, CsvReader csv)
    {
        if (colIndex > -1)
        {
            currentColIndex = colIndex;
            return Convert.ToBoolean(csv[colIndex]);
        }

        return null;
    }

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

    public class ScenarioRecord
    {
        public ScenarioRecord()
        {
            LocationScenarioId = null;
        }

        public int ScenarioRecordId { get; set; }
        public string LocationId { get; set; } //required
        public string LocationScenarioId { get; set; } //required
        public double? RiverLevel { get; set; } //optional
        public double? RiverLevelLow { get; set; } //optional
        public double? DikeTableHeight { get; set; } //optional
        public double? PlLineOffsetBelowDikeTopAtRiver { get; set; } //optional
        public double? PlLineOffsetBelowDikeTopAtPolder { get; set; } //optional
        public double? PlLineOffsetBelowShoulderBaseInside { get; set; } //optional
        public double? PlLineOffsetBelowDikeToeAtPolder { get; set; } //optional
        public double? PlLineOffsetBelowDikeCrestMiddle { get; set; } //optional
        public double? PlLineOffsetFactorBelowShoulderCrest { get; set; } //optional
        public bool? UsePlLineOffsetBelowDikeCrestMiddle { get; set; } //optional
        public bool? UsePlLineOffsetFactorBelowShoulderCrest { get; set; } //optional
        public double? HeadPl3 { get; set; } //optional
        public double? HeadPl4 { get; set; } //optional

        public double? PolderLevel { get; set; } // optional

        public double? HeadPl2 { get; set; } // Optional

        public double? UpliftCriterionPiping { get; set; } //optional
        public double? UpliftCriterionStability { get; set; } //optional
        public double? RequiredSafetyFactorPiping { get; set; } //optional
        public double? RequiredSafetyFactorStabilityInnerSlope { get; set; } //optional
        public double? RequiredSafetyFactorStabilityOuterSlope { get; set; } //optional
    }
}