using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

namespace RomCheater.Serialization
{
    public abstract class SerializationReader : ISerializationResultCount, IDisposable
    {
        private const string DEFAULT_FOLDER = "tmp";
        private const string DEFAULT_FILENAME = "SerializedMemoryResults.tmp";
        private static string DEFAULT_PATH = string.Format(@"{0}\{1}", DEFAULT_FOLDER, DEFAULT_FILENAME);
        public SerializationReader() : this(DEFAULT_PATH) { }
        protected SerializationReader(string filename) { FileName = filename; CreateReader(); }


        #region ISerializationResultCount members
        public int ResultCount { get; protected set; }
        #endregion
        private FileStream fileStream;
        protected BinaryReader binReader;
        protected string FileName { get; private set; }
        private void CreateReader()
        {
            fileStream = new FileStream(FileName, FileMode.Open, FileAccess.Read, FileShare.Read);
            binReader = new BinaryReader(fileStream);
        }
            #region IDisposable Support
        // Track whether Dispose has been called.
        private bool disposed = false;
        // Implement IDisposable.
        // Do not make this method virtual.
        // A derived class should not be able to override this method.
        public void Dispose()
        {
            Dispose(true);
            // This object will be cleaned up by the Dispose method.
            // Therefore, you should call GC.SupressFinalize to
            // take this object off the finalization queue
            // and prevent finalization code for this object
            // from executing a second time.
            GC.SuppressFinalize(this);
        }
        // Dispose(bool disposing) executes in two distinct scenarios.
        // If disposing equals true, the method has been called directly
        // or indirectly by a user's code. Managed and unmanaged resources
        // can be disposed.
        // If disposing equals false, the method has been called by the
        // runtime from inside the finalizer and you should not reference
        // other objects. Only unmanaged resources can be disposed.
        protected virtual void Dispose(bool disposing)
        {
            // Check to see if Dispose has already been called.
            if (!this.disposed)
            {
                // If disposing equals true, dispose all managed
                // and unmanaged resources.
                if (disposing)
                {
                    // Dispose managed resources.
                    //component.Dispose();
                }

                // Call the appropriate methods to clean up
                // unmanaged resources here.
                // If disposing is false,
                // only the following code is executed.
               
                // clean up any resources
                binReader.Close();
                binReader = null;
                fileStream = null;                
                // Note disposing has been done.
                disposed = true;

            }
        }
        // Use C# destructor syntax for finalization code.
        // This destructor will run only if the Dispose method
        // does not get called.
        // It gives your base class the opportunity to finalize.
        // Do not provide destructors in types derived from this class.
        ~SerializationReader()
        {
            // Do not re-create Dispose clean-up code here.
            // Calling Dispose(false) is optimal in terms of
            // readability and maintainability.
            Dispose(false);
        }
        #endregion
    }
}