shuffle funktion

api/advent22_api/routers/_misc.py

@@ -0,0 +1,20 @@
+import itertools
+import random
+from typing import Sequence
+
+from ..dav_common import dav_get_file
+
+
+async def get_loesungswort() -> str:
+    fp = await dav_get_file("loesungswort.txt")
+    return fp.read().decode("utf8").strip()
+
+
+async def shuffle(seq: Sequence, length: int | None = None) -> list:
+    rnd = random.Random(await get_loesungswort())
+
+    if length is not None:
+        infinity = itertools.cycle(seq)
+        seq = list(itertools.islice(infinity, length))
+
+    return rnd.sample(seq, len(seq))

api/advent22_api/routers/days.py

@@ -10,21 +10,17 @@ from PIL import ImageDraw, ImageFont
 
 from ..dav_common import dav_get_file, dav_list_files
 from ._image import AdventImage
+from ._misc import shuffle
 
 router = APIRouter(prefix="/days", tags=["days"])
 
 loesungswort = "ABCDEFGHIJKLMNOPQRSTUVWX"
 
 
-async def shuffle(string: str) -> str:
-    rnd = random.Random(loesungswort)
-    return "".join(rnd.sample(string, len(string)))
-
-
 @router.on_event("startup")
 async def startup() -> None:
     print(loesungswort)
-    print(await shuffle(loesungswort))
+    print("".join(await shuffle(loesungswort)))
 
 
 @router.get("/letter/{index}")