feat: code quality (#31)

* feat: code quality

crud.py

@@ -1,12 +1,14 @@
-from typing import List, Optional
-
 import json
+from typing import Optional
+
+from lnbits.db import Database
 
-from . import db
 from .models import Config, Relay
 
+db = Database("ext_nostrclient")
 
-async def get_relays() -> List[Relay]:
+
+async def get_relays() -> list[Relay]:
     rows = await db.fetchall("SELECT * FROM nostrclient.relays")
     return [Relay.from_row(r) for r in rows]
 
@@ -37,27 +39,21 @@ async def create_config() -> Config:
         INSERT INTO nostrclient.config (json_data)
         VALUES (?)
         """,
-        (json.dumps(config.dict())),
-    )
-    row = await db.fetchone(
-        "SELECT json_data FROM nostrclient.config", ()
+        (json.dumps(config.dict()),),
     )
+    row = await db.fetchone("SELECT json_data FROM nostrclient.config", ())
     return json.loads(row[0], object_hook=lambda d: Config(**d))
 
 
 async def update_config(config: Config) -> Optional[Config]:
     await db.execute(
         """UPDATE nostrclient.config SET json_data = ?""",
-        (json.dumps(config.dict())),
-    )
-    row = await db.fetchone(
-        "SELECT json_data FROM nostrclient.config", ()
+        (json.dumps(config.dict()),),
     )
+    row = await db.fetchone("SELECT json_data FROM nostrclient.config", ())
     return json.loads(row[0], object_hook=lambda d: Config(**d))
 
 
 async def get_config() -> Optional[Config]:
-    row = await db.fetchone(
-        "SELECT json_data FROM nostrclient.config", ()
-    )
+    row = await db.fetchone("SELECT json_data FROM nostrclient.config", ())
     return json.loads(row[0], object_hook=lambda d: Config(**d)) if row else None