Merge branch 'master' into PlugsVersionNumberFix

1 files changed, 71 insertions, 0 deletions

diff --git a/Jellyfin.Api/Helpers/ClassMigrationHelper.cs b/Jellyfin.Api/Helpers/ClassMigrationHelper.cs
new file mode 100644
index 000000000..a911a3324
--- /dev/null
+++ b/Jellyfin.Api/Helpers/ClassMigrationHelper.cs
@@ -0,0 +1,71 @@
+using System;
+using System.Reflection;
+
+namespace Jellyfin.Api.Helpers
+{
+    /// <summary>
+    /// A static class for copying matching properties from one object to another.
+    /// TODO: remove at the point when a fixed migration path has been decided upon.
+    /// </summary>
+    public static class ClassMigrationHelper
+    {
+        /// <summary>
+        /// Extension for 'Object' that copies the properties to a destination object.
+        /// </summary>
+        /// <param name="source">The source.</param>
+        /// <param name="destination">The destination.</param>
+        public static void CopyProperties(this object source, object destination)
+        {
+            // If any this null throw an exception.
+            if (source == null || destination == null)
+            {
+                throw new Exception("Source or/and Destination Objects are null");
+            }
+
+            // Getting the Types of the objects.
+            Type typeDest = destination.GetType();
+            Type typeSrc = source.GetType();
+
+            // Iterate the Properties of the source instance and populate them from their destination counterparts.
+            PropertyInfo[] srcProps = typeSrc.GetProperties();
+            foreach (PropertyInfo srcProp in srcProps)
+            {
+                if (!srcProp.CanRead)
+                {
+                    continue;
+                }
+
+                var targetProperty = typeDest.GetProperty(srcProp.Name);
+                if (targetProperty == null)
+                {
+                    continue;
+                }
+
+                if (!targetProperty.CanWrite)
+                {
+                    continue;
+                }
+
+                var obj = targetProperty.GetSetMethod(true);
+                if (obj != null && obj.IsPrivate)
+                {
+                    continue;
+                }
+
+                var target = targetProperty.GetSetMethod();
+                if (target != null && (target.Attributes & MethodAttributes.Static) != 0)
+                {
+                    continue;
+                }
+
+                if (!targetProperty.PropertyType.IsAssignableFrom(srcProp.PropertyType))
+                {
+                    continue;
+                }
+
+                // Passed all tests, lets set the value.
+                targetProperty.SetValue(destination, srcProp.GetValue(source, null), null);
+            }
+        }
+    }
+}