using System;
using System.IO;
using winsw.Configuration;

namespace winsw
{
    public class ServiceDescriptorYaml
    {
        public static DefaultWinSWSettings Defaults { get; } = new DefaultWinSWSettings();

        public string BasePath { get; set; }

        public string BaseName { get; set; }

        public virtual string ExecutablePath => Defaults.ExecutablePath;

        public ServiceDescriptorYaml()
        {
            string p = ExecutablePath;
            string baseName = Path.GetFileNameWithoutExtension(p);
            if (baseName.EndsWith(".vshost"))
                baseName = baseName.Substring(0, baseName.Length - 7);

            DirectoryInfo d = new DirectoryInfo(Path.GetDirectoryName(p));
            while (true)
            {
                if (File.Exists(Path.Combine(d.FullName, baseName + ".yaml")))
                    break;

                if (d.Parent is null)
                    throw new FileNotFoundException("Unable to locate " + baseName + ".yaml file within executable directory or any parents");

                d = d.Parent;
            }

            BaseName = baseName;
            BasePath = Path.Combine(d.FullName, BaseName);

            using(var reader = new StreamReader(BasePath + ".yaml"))
            {
                var file = reader.ReadToEnd();
                Console.WriteLine(file);
            }

            // yaml <> object - deserialization and schema validation
            // Set environment data
        }
    }
}