implemented fetching of artist overview

src/music_kraken/objects/parents.py

@@ -1,6 +1,6 @@
 import random
 from collections import defaultdict
-from typing import Optional, Dict, Tuple, List
+from typing import Optional, Dict, Tuple, List, Type
 
 from .metadata import Metadata
 from .option import Options
@@ -129,6 +129,18 @@ class DatabaseObject:
         
         self._build_recursive_structures(build_version=random.randint(0, 99999), merge=merge_into)
 
+    def _add_other_db_objects(self, object_type: Type["DatabaseObject"], object_list: List["DatabaseObject"]):
+        pass
+
+    def add_list_of_other_objects(self, object_list: List["DatabaseObject"]):
+        d: Dict[Type[DatabaseObject], List[DatabaseObject]] = defaultdict(list)
+
+        for db_object in object_list:
+            d[type(db_object)].append(db_object)
+
+        for key, value in d.items():
+            self._add_other_db_objects(key, value)
+
 
 class MainObject(DatabaseObject):
     """

src/music_kraken/objects/song.py

@@ -1,6 +1,6 @@
 import random
 from collections import defaultdict
-from typing import List, Optional, Dict, Tuple
+from typing import List, Optional, Dict, Tuple, Type
 
 import pycountry
 
@@ -109,6 +109,19 @@ class Song(MainObject):
                 artist.main_album_collection.append(album, merge_on_conflict=merge, merge_into_existing=False)
                 artist._build_recursive_structures(build_version=build_version, merge=merge)
 
+    def _add_other_db_objects(self, object_type: Type["DatabaseObject"], object_list: List["DatabaseObject"]):
+        if object_type is Song:
+            return
+
+        if object_type is Artist:
+            self.main_artist_collection.extend(object_list)
+            return
+
+        if object_type is Album:
+            self.album_collection.extend(object_list)
+            return
+        
+
     @property
     def indexing_values(self) -> List[Tuple[str, object]]:
         return [
@@ -280,6 +293,22 @@ class Album(MainObject):
             label.album_collection.append(self, merge_on_conflict=merge, merge_into_existing=False)
             label._build_recursive_structures(build_version=build_version, merge=merge)
 
+    def _add_other_db_objects(self, object_type: Type["DatabaseObject"], object_list: List["DatabaseObject"]):
+        if object_type is Song:
+            self.song_collection.extend(object_list)
+            return
+
+        if object_type is Artist:
+            self.artist_collection.extend(object_list)
+            return
+
+        if object_type is Album:
+            return
+
+        if object_type is Label:
+            self.label_collection.extend(object_list)
+            return
+
     @property
     def indexing_values(self) -> List[Tuple[str, object]]:
         return [
@@ -483,6 +512,23 @@ class Artist(MainObject):
         self.main_album_collection: Collection[Album] = Collection(data=main_album_list, element_type=Album)
         self.label_collection: Collection[Label] = Collection(data=label_list, element_type=Label)
 
+    def _add_other_db_objects(self, object_type: Type["DatabaseObject"], object_list: List["DatabaseObject"]):
+        if object_type is Song:
+            # this doesn't really make sense
+            # self.feature_song_collection.extend(object_list)
+            return
+
+        if object_type is Artist:
+            return
+
+        if object_type is Album:
+            self.main_album_collection.extend(object_list)
+            return
+
+        if object_type is Label:
+            self.label_collection.extend(object_list)
+            return
+
     def compile(self, merge_into: bool = False):
         """
         compiles the recursive structures,
@@ -686,6 +732,18 @@ class Label(MainObject):
         self.album_collection: Collection[Album] = Collection(data=album_list, element_type=Album)
         self.current_artist_collection: Collection[Artist] = Collection(data=current_artist_list, element_type=Artist)
 
+    def _add_other_db_objects(self, object_type: Type["DatabaseObject"], object_list: List["DatabaseObject"]):
+        if object_type is Song:
+            return
+
+        if object_type is Artist:
+            self.current_artist_collection.extend(object_list)
+            return
+
+        if object_type is Album:
+            self.album_collection.extend(object_list)
+            return
+
     def _build_recursive_structures(self, build_version: int, merge: False):
         if build_version == self.build_version:
             return