using Quadarax.Foundation.Core.QConsole.Argument;
using Quadarax.Foundation.Core.QConsole.Command.Base;

namespace qdr.app.tools.qfu.Commands.Aspects
{
    internal class FilterAspect
    {
        #region *** Constants ***
        private const string ARG_FILTER_SEP = "|";
        public const string ARG_FILTER_NAME = "f";
        private const string ARG_FILTER_HINT = "filter";
        private const string ARG_FILTER_DESCR = "Search pattern for files or directories to delete (separated by pipe " + ARG_FILTER_SEP + "). Example: *.txt|*.log|temp*";
        #endregion

        #region *** Public Operations ***
        public static IEnumerable<AbstractArgument> SetupArguments()
        {
            return
            [
                new NamedArgument(ARG_FILTER_NAME, ARG_FILTER_DESCR, ARG_FILTER_HINT, Quadarax.Foundation.Core.QConsole.Value.TypeValuesEnum.String, string.Empty, false)
            ];
        }

        public static string[] GetSearchPatterns(AbstractCommand context)
        {
            if (context == null)
                throw new ArgumentNullException(nameof(context), "Command context cannot be null.");

            var filterArgument = context.Arguments.FirstOrDefault(x => string.Equals(x.Code, ARG_FILTER_NAME));
            if (filterArgument?.Value.Get() == null)
                return ["*"]; // Default pattern - match all

            var filterValue = filterArgument.Value.Get()?.ToString();
            if (string.IsNullOrWhiteSpace(filterValue))
                return ["*"]; // Default pattern - match all

            return ParseSearchPatterns(filterValue);
        }

        public static string[] ParseSearchPatterns(string filterArgument)
        {
            if (string.IsNullOrWhiteSpace(filterArgument))
                return ["*"];

            return filterArgument.Split(new[] { ARG_FILTER_SEP }, StringSplitOptions.RemoveEmptyEntries)
                                 .Select(f => f.Trim())
                                 .Where(f => !string.IsNullOrEmpty(f))
                                 .ToArray();
        }
        #endregion
    }
}