*: add some API for RPC server

feeluown/collection.py

@@ -220,6 +220,23 @@ def _write_metadata_if_needed(self, f):
                 f.write('\n')
             f.write(TOML_DELIMLF)
 
+    def raw_data(self):
+        """Return the raw data of the collection file.
+
+        .. versionadded:: 4.1.11
+        """
+        with open(self.fpath, encoding='utf-8') as f:
+            return f.read()
+
+    def overwrite_with_raw_data(self, raw_data):
+        """Overwrite the collection file with the provided raw data.
+
+        .. versionadded:: 4.1.11
+        """
+        with open(self.fpath, 'w', encoding='utf-8') as f:
+            f.write(raw_data)
+        self.load()
+
 
 class CollectionManager:
 

feeluown/library/models.py

@@ -237,8 +237,21 @@ def _serialize(self, f):
         from feeluown.library import reverse
 
         js = f(self)
-        js.pop('meta')
-        js.pop('state')
+        # FIXME: pydantic >=2.11 has a bug that it may call this method
+        # multiple times -> https://github.com/pydantic/pydantic/issues/11505
+        # So the `js` may not have `meta` and `state` field sometimes.
+        # What's even more buggy is that it does not raise exception when
+        # `js` does not have `meta` and `state`.
+        #
+        # For example, SongModel has a field album with TAlbum type,
+        # pydantic may try to serialize the model with BriefAlbumModel even
+        # if the model is actually AlbumModel.
+        #
+        # Without this workaround, the test case `test_serialize_model`
+        # will fail with pydantic >=2.11. See
+        # https://github.com/feeluown/FeelUOwn/pull/922 for more details.
+        js.pop('meta', None)
+        js.pop('state', None)
         js['provider'] = js['source']
         js['uri'] = reverse(self)
         js['__type__'] = f'feeluown.library.{self.__class__.__name__}'

feeluown/serializers/__init__.py

@@ -19,8 +19,6 @@ def register_deserializer(type_, deserializer_cls):
 
 
 def get_serializer(format_):
-    global _MAPPING
-
     if not _MAPPING:
         register_serializer('plain', PlainSerializer)
         register_serializer('json', JsonSerializer)
@@ -31,8 +29,6 @@ def get_serializer(format_):
 
 
 def get_deserializer(format_: str):
-    global _DE_MAPPING
-
     if not _DE_MAPPING:
         register_deserializer('python', PythonDeserializer)
     if format_ not in _DE_MAPPING:

feeluown/serializers/python.py

@@ -97,7 +97,7 @@ def serialize_search_result_list(self, list_):
 
 class SimpleTypeSerializer(PythonSerializer, metaclass=SerializerMeta):
     class Meta:
-        types = (str, int, float, type(None))
+        types = (str, int, float, type(None), dict)
 
     def serialize(self, object):
         return object