queue + local sqlite WIP

Azaion.CommonSecurity/Services/ResourceLoader.cs

@@ -0,0 +1,58 @@
+using System.Reflection;
+using Azaion.CommonSecurity.DTO;
+
+namespace Azaion.CommonSecurity.Services;
+
+public interface IResourceLoader
+{
+    Task<MemoryStream> Load(string fileName, CancellationToken cancellationToken = default);
+    Assembly? LoadAssembly(string asmName);
+}
+
+public class ResourceLoader(AzaionApiClient api, ApiCredentials credentials) : IResourceLoader
+{
+    private static readonly List<string> EncryptedResources =
+    [
+        "Azaion.Annotator",
+        "Azaion.Dataset"
+    ];
+
+    public Assembly? LoadAssembly(string resourceName)
+    {
+        var assemblyName = resourceName.Split(',').First();
+        if (EncryptedResources.Contains(assemblyName))
+        {
+            try
+            {
+                var stream = Load($"{assemblyName}.dll").GetAwaiter().GetResult();
+                return Assembly.Load(stream.ToArray());
+            }
+            catch (Exception e)
+            {
+                Console.WriteLine(e);
+                var currentLocation = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location)!;
+                var dllPath = Path.Combine(currentLocation, "dummy", $"{assemblyName}.dll");
+                return Assembly.LoadFile(dllPath);
+            }
+        }
+
+        var loadedAssembly = AppDomain.CurrentDomain.GetAssemblies()
+            .FirstOrDefault(a => a.GetName().Name == assemblyName);
+
+        return loadedAssembly;
+    }
+
+    public async Task<MemoryStream> Load(string fileName, CancellationToken cancellationToken = default)
+    {
+        var hardwareService = new HardwareService();
+        var hardwareInfo = hardwareService.GetHardware();
+
+        var encryptedStream = Task.Run(() => api.GetResource(fileName, credentials.Password, hardwareInfo), cancellationToken).Result;
+
+        var key = Security.MakeEncryptionKey(credentials.Email, credentials.Password, hardwareInfo.Hash);
+        var stream = new MemoryStream();
+        await encryptedStream.DecryptTo(stream, key, cancellationToken);
+        stream.Seek(0, SeekOrigin.Begin);
+        return stream;
+    }
+}