// Copyright (C) Stichting Deltares 2024. 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.

using System;
using CommandLine;
using CommandLine.Text;

namespace Deltares.DamEngine.ConsoleRun;

internal class CommandOptions : CommandLineOptionsBase
{
    public const string DefaultInputFileName = "InputFile.xml";
    public const string DefaultOutputFileName = "OutputFile.xml";

    [Option("i", "input", Required = true, DefaultValue = DefaultInputFileName, HelpText = "Name and path of the input file.")]
    public string InputFileName { get; set; }

    [Option("o", "output", Required = false, DefaultValue = DefaultOutputFileName, HelpText = "Name and path of the output file.")]
    public string OutputFileName { get; set; }

    [HelpOption]
    public string GetUsage()
    {
        var help = new HelpText
        {
            Heading = "Dam Console Run",
            Copyright = "Copyright (c) 2018 Deltares",
            AdditionalNewLineAfterOption = true,
            AddDashesToOption = true
        };

        HandleParsingErrorsInHelp(help);

        help.AddPreOptionsLine("Usage: DamConsoleRunner[.exe] -i InputFile [ -o OutputFile]");
        help.AddOptions(this);

        return help;
    }

    void HandleParsingErrorsInHelp(HelpText help)
    {
        if (LastPostParsingState.Errors.Count > 0)
        {
            string errors = help.RenderParsingErrorsText(this, 2); // indent with two spaces					
            if (!string.IsNullOrEmpty(errors))
            {
                help.AddPreOptionsLine(string.Concat(Environment.NewLine, "ERROR(S):"));
                help.AddPreOptionsLine(errors);
            }
        }
    }
}