Merge pull request #571 from Stremio/lib-update-optimization

prevent unnecessary library updates

src/models/ctx/update_library.rs

@@ -143,7 +143,13 @@ pub fn update_library<E: Env + 'static>(
             }))
             .unchanged(),
         },
-        Msg::Internal(Internal::UpdateLibraryItem(library_item)) => {
+        Msg::Internal(Internal::UpdateLibraryItem(library_item))
+            if library
+                .items
+                .get(&library_item.id)
+                .map(|prev_library_item| !library_item.eq_no_mtime(prev_library_item))
+                .unwrap_or(true) =>
+        {
             let mut library_item = library_item.to_owned();
             library_item.mtime = E::now();
 

src/types/library/library_item.rs

@@ -77,6 +77,20 @@ impl LibraryItem {
             && !self.removed
             && !self.temp
     }
+
+    #[inline]
+    pub fn eq_no_mtime(&self, other: &LibraryItem) -> bool {
+        self.id == other.id
+            && self.removed == other.removed
+            && self.temp == other.temp
+            && self.ctime == other.ctime
+            && self.state == other.state
+            && self.name == other.name
+            && self.r#type == other.r#type
+            && self.poster == other.poster
+            && self.poster_shape == other.poster_shape
+            && self.behavior_hints == other.behavior_hints
+    }
 }
 
 impl<E: Env + 'static> From<(&MetaItemPreview, PhantomData<E>)> for LibraryItem {