mirror of
https://code.lenaisten.de/Lenaisten/advent22.git
synced 2024-12-26 14:13:02 +00:00
Jörn-Michael Miehe
3316bf2822
- `routers`: `admin`, `days`, `general`, `user` -> `admin`, `images` - `core.depends`: cleanup - `core.*_helpers`: joined in `core.helpers`
70 lines
1.7 KiB
Python
70 lines
1.7 KiB
Python
import itertools
|
|
import random
|
|
import re
|
|
from io import BytesIO
|
|
from typing import Any, Self, Sequence, TypeVar
|
|
|
|
from fastapi.responses import StreamingResponse
|
|
from PIL import Image
|
|
|
|
from .config import get_config
|
|
from .webdav import WebDAV
|
|
|
|
T = TypeVar("T")
|
|
|
|
|
|
class Random(random.Random):
|
|
@classmethod
|
|
async def get(cls, bonus_salt: Any = "") -> Self:
|
|
cfg = await get_config()
|
|
return cls(f"{cfg.puzzle.solution}{cfg.puzzle.random_seed}{bonus_salt}")
|
|
|
|
def shuffled(self, population: Sequence[T]) -> Sequence[T]:
|
|
return self.sample(population, k=len(population))
|
|
|
|
|
|
def set_len(seq: Sequence[T], len: int) -> Sequence[T]:
|
|
# `seq` unendlich wiederholen
|
|
infinite = itertools.cycle(seq)
|
|
|
|
# Die ersten `length` einträge nehmen
|
|
return list(itertools.islice(infinite, len))
|
|
|
|
|
|
async def list_images_auto() -> list[str]:
|
|
"""
|
|
Finde alle Bilddateien im "automatisch"-Verzeichnis
|
|
"""
|
|
|
|
return await WebDAV.list_files(
|
|
directory="/images_auto",
|
|
regex=re.compile(r"\.(gif|jpe?g|tiff?|png|bmp)$", flags=re.IGNORECASE),
|
|
)
|
|
|
|
|
|
async def load_image(file_name: str) -> Image.Image:
|
|
"""
|
|
Versuche, Bild aus Datei zu laden
|
|
"""
|
|
|
|
if not await WebDAV.file_exists(file_name):
|
|
raise RuntimeError(f"DAV-File {file_name} does not exist!")
|
|
|
|
return Image.open(BytesIO(await WebDAV.read_bytes(file_name)))
|
|
|
|
|
|
async def api_return_image(img: Image.Image) -> StreamingResponse:
|
|
"""
|
|
Bild mit API zurückgeben
|
|
"""
|
|
|
|
# JPEG-Daten in Puffer speichern
|
|
img_buffer = BytesIO()
|
|
img.save(img_buffer, format="JPEG", quality=85)
|
|
img_buffer.seek(0)
|
|
|
|
# zurückgeben
|
|
return StreamingResponse(
|
|
media_type="image/jpeg",
|
|
content=img_buffer,
|
|
)
|