using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Serialization;

namespace CloudBuilder.CodeGenerator.Config
{
    public class ToolInitConfig
    {
        private static ToolInitConfig instance = null;
        private static string filename = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "config\\tool-init-config.xml");
        private static ToolInitConfig Load()
        {
            if (!System.IO.File.Exists(filename))
            {
                throw new ValidationException("ToolInitConfig config file not found");
            }

            StringReader textReader = new StringReader(System.IO.File.ReadAllText(filename, Encoding.UTF8));
            XmlSerializer serializer = new XmlSerializer(typeof(ToolInitConfig));
            return (ToolInitConfig)serializer.Deserialize(textReader);
        }

        public static void ClearInstance()
        {
            instance = null;
        }

        public static ToolInitConfig GetInstance()
        {
            if (instance == null)
            {
                instance = Load();
            }
            return instance;
        }

        public string TemplatePath { get; set; }
        public string CurrentAssembly { get; set; }

        public string Using { get; set; }

        public NamespaceObject[] NamespaceObjects { get; set; }

        public AssemblyReference[] AssemblyReferences { get; set; }

        public string[] ExculdePropertyTypes { get; set; }

        public static void Save(ToolInitConfig toolInitConfig)
        {
            XmlSerializer xmlSerializer = new XmlSerializer(typeof(ToolInitConfig));
            string xml = null;

            using (MemoryStream stream = new MemoryStream())
            {
                StreamWriter writer = new StreamWriter(stream, Encoding.UTF8);
                xmlSerializer.Serialize((TextWriter)writer, toolInitConfig);
                stream.Seek(0L, SeekOrigin.Begin);
                StreamReader reader = new StreamReader(stream, Encoding.UTF8);
                xml = reader.ReadToEnd();
            }

            StreamWriter sw = new StreamWriter(filename, false);
            sw.WriteLine(xml);
            sw.Close();
            sw.Dispose();
        }
    }

    public class AssemblyReference
    {
        public string AssemblyFileName { get; set; }
    }

    public class NamespaceObject
    {
        public const string OUT_FILE_PATH = "OutFilePath";
        public const string ASSEMBLY = "Assembly";
        public const string NAMESPACE = "Namespace";

        public string TemplateType { get; set; }
        public string TemplateFileName { get; set; }
        public string OutFilePath { get; set; }
        public string Assembly { get; set; }
        public string Namespace { get; set; }

        public string FileNameSuffix { get; set; }

        public string FileNamePrefix { get; set; }

    }
}