refactor: external sources update

src/arcaea_offline/external/arcaea/packlist.py

@@ -0,0 +1,31 @@
+import json
+from typing import List, Union
+
+from ...models.songs import Pack, PackLocalized
+from .common import ArcaeaParser, is_localized, set_model_localized_attrs
+
+
+class PacklistParser(ArcaeaParser):
+    def __init__(self, filepath):
+        super().__init__(filepath)
+
+    def parse(self) -> List[Union[Pack, PackLocalized]]:
+        with open(self.filepath, "r", encoding="utf-8") as pl_f:
+            packlist_json_root = json.loads(pl_f.read())
+
+        packlist_json = packlist_json_root["packs"]
+        results = []
+        for item in packlist_json:
+            pack = Pack()
+            pack.id = item["id"]
+            pack.name = item["name_localized"]["en"]
+            pack.description = item["description_localized"]["en"] or None
+            results.append(pack)
+
+            if is_localized(item, "name") or is_localized(item, "description"):
+                pack_localized = PackLocalized(id=pack.id)
+                set_model_localized_attrs(pack_localized, item, "name")
+                set_model_localized_attrs(pack_localized, item, "description")
+                results.append(pack_localized)
+
+        return results