Mini Kabibi Habibi

using System;
using System.Collections.Generic;
using System.Data.Services;
using System.Data.Services.Providers;
using System.IO;
using System.Linq;
using System.Web;

namespace DXSK8.Service {
    public interface IImageSource {
        byte[] Image { get; }
    }

    public class ImageStreamProvider : IDataServiceStreamProvider {
        public ImageStreamProvider(SK8DataContainer context) {
        }
        public void DeleteStream(object entity, DataServiceOperationContext operationContext) {
            throw new NotImplementedException();
        }
        public Stream GetReadStream(object entity, string etag, bool? checkETagForEquality, DataServiceOperationContext operationContext) {
            if(checkETagForEquality != null) {
                // This stream provider implementation does not support  
                // ETag headers for media resources. This means that we do not track  
                // concurrency for a media resource, and last-in wins on updates. 
                throw new DataServiceException(400,
                    "This sample service does not support the ETag header for a media resource.");
            }

            var imageSource = entity as IImageSource;
            if(imageSource == null) {
                throw new DataServiceException(500, "Internal Server Error.");
            }
            var image = imageSource.Image;
            // Build the full path to the stored image file, which includes the entity key. 
            /*string fullImageFilePath = imageFilePath + "image" + image.PhotoId;

            if(!File.Exists(fullImageFilePath)) {
                throw new DataServiceException(500, "The image file could not be found.");
            }

            // Return a stream that contains the requested file. 
            return new FileStream(fullImageFilePath, FileMode.Open);*/
            return new MemoryStream(image);
        }
        public Uri GetReadStreamUri(object entity, DataServiceOperationContext operationContext) {
            return null;
        }

        public string GetStreamContentType(object entity, DataServiceOperationContext operationContext) {
            return "image/png";
        }

        public string GetStreamETag(object entity, DataServiceOperationContext operationContext) {
            return null;
        }

        public Stream GetWriteStream(object entity, string etag, bool? checkETagForEquality, DataServiceOperationContext operationContext) {
            throw new NotImplementedException();
        }

        public string ResolveType(string entitySetName, DataServiceOperationContext operationContext) {
            // We should only be handling PhotoInfo types. 
            return "api." + entitySetName;
            //if(entitySetName == "Product") {
            //    return "api.Product";
            //}
            //else {
            //    // This will raise an DataServiceException. 
            //    return null;
            //}
        }

        public int StreamBufferSize {
            get { return 64000; }
        }
    }
}