using System.ComponentModel;
using System.IO;

namespace KattekerCreator
{
    public class ApplicationArguments
    {
        private string _changeLog;
        private string _channel;
        private string _outputDir;
        private string _programFile;
        private string _publishDir;

        [DisplayName("Program")]
        [Description("Path to the program file")]
        public string ProgramFile
        {
            get => _programFile;
            set => SetPropertyIfNotDefault(ref _programFile, Path.GetFullPath(value));
        }

        [DisplayName("Changelog")]
        [Description("Filename of the changelog file")]
        public string ChangeLog
        {
            get => _changeLog;
            set => SetPropertyIfNotDefault(ref _changeLog, value);
        }

        [DisplayName("Channel")]
        [Description("Channel of releasing.")]
        public string Channel
        {
            get => _channel;
            set => SetPropertyIfNotDefault(ref _channel, value);
        }

        [DisplayName("OutDir")]
        [Description("Directory for output")]
        public string OutputDir
        {
            get => _outputDir;
            set => SetPropertyIfNotDefault(ref _outputDir, value);
        }

        [DisplayName("PublishDir")]
        [Description("Path for output from the point of view of the application.")]
        public string PublishDir
        {
            get => _publishDir;
            set => SetPropertyIfNotDefault(ref _publishDir, value);
        }

        private static bool SetPropertyIfNotDefault<T>(ref T field, T value)
        {
            if (Equals(value, field)) return false;
            if (!Equals(field, default(T))) return false;
            field = value;
            return true;
        }
    }
}