using System.IO;

namespace SourceGit.Commands
{
    public class QueryGitCommonDir : Command
    {
        public QueryGitCommonDir(string workDir)
        {
            WorkingDirectory = workDir;
            Args = "rev-parse --git-common-dir";
            RaiseError = false;
        }

        public string Result()
        {
            var rs = ReadToEnd().StdOut;
            if (string.IsNullOrEmpty(rs))
                return null;

            rs = rs.Trim();
            if (Path.IsPathRooted(rs))
                return rs;
            return Path.GetFullPath(Path.Combine(WorkingDirectory, rs));
        }
    }
}