Feature repricing min max (#10)

amazon settlement import/export improvements

src/bnhtrade.Core/Model/Data/DatabaseFileStream.cs

@@ -0,0 +1,98 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.IO;
+using System.Linq;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace bnhtrade.Core.Model.Data
+{
+    public class DatabaseFileStream : IDisposable, IValidatableObject
+    {
+        [Required()]
+        public Guid FileGUID { get; set; }
+
+        [Required()]
+        public MemoryStream FileData { get; set; }
+
+        public bool IsSetFileData
+        {
+            get { return FileData != null; }
+        }
+
+        [Required(), StringLength(3, MinimumLength = 3)]
+        public string FileExtention { get; set; }
+
+        [Required(), Range(1, 2147483647)]
+        public int FileSize { get; set; }
+
+        [Required(), StringLength(24, MinimumLength = 24)]
+        public string FileMD5base64 { get; set; }
+
+        public string CalculateContentMD5(MemoryStream stream)
+        {
+            MD5CryptoServiceProvider provider = new MD5CryptoServiceProvider();
+            byte[] hash = provider.ComputeHash(stream);
+            return Convert.ToBase64String(hash);
+        }
+
+        public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
+        {
+            var resultList = new List<ValidationResult>();
+
+            if (IsSetFileData && FileData.Length == 0)
+            {
+                var validate = new ValidationResult("Stream is empty");
+                resultList.Add(validate);
+            }
+            if (IsSetFileData && FileMD5base64 != new Logic.Utilities.CalculateMD5().Base64(FileData))
+            {
+                var validate = new ValidationResult("Calculated file MD5 hash does not match.");
+                resultList.Add(validate);
+            }
+
+            return resultList;
+        }
+
+        #region IDisposable Support
+        private bool disposedValue = false; // To detect redundant calls
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (!disposedValue)
+            {
+                if (disposing)
+                {
+                    // TODO: dispose managed state (managed objects).
+                    if (FileData != null)
+                        FileData.Dispose();
+                }
+
+                // TODO: free unmanaged resources (unmanaged objects) and override a finalizer below.
+                // TODO: set large fields to null.
+
+                disposedValue = true;
+            }
+        }
+
+        // TODO: override a finalizer only if Dispose(bool disposing) above has code to free unmanaged resources.
+        //~AmazonFeedSubmission()
+        //{
+        //    // Do not change this code. Put cleanup code in Dispose(bool disposing) above.
+        //    Dispose(false);
+        //}
+
+        // This code added to correctly implement the disposable pattern.
+        public void Dispose()
+        {
+            // Do not change this code. Put cleanup code in Dispose(bool disposing) above.
+            Dispose(true);
+            // TODO: uncomment the following line if the finalizer is overridden above.
+            // GC.SuppressFinalize(this);
+        }
+        #endregion
+    }
+}
+