using System.Text.RegularExpressions;

namespace SourceGit.Commands
{
    public partial class QueryStagedFileBlobGuid : Command
    {
        [GeneratedRegex(@"^\d+\s+([0-9a-f]+)\s+.*$")]
        private static partial Regex REG_FORMAT();

        public QueryStagedFileBlobGuid(string repo, string file)
        {
            WorkingDirectory = repo;
            Context = repo;
            Args = $"ls-files -s -- \"{file}\"";
        }

        public string Result()
        {
            var rs = ReadToEnd();
            var match = REG_FORMAT().Match(rs.StdOut.Trim());
            if (match.Success)
            {
                return match.Groups[1].Value;
            }

            return string.Empty;
        }
    }
}