Initial commit

backend/app/routers/branding.py

@@ -0,0 +1,64 @@
+import os
+from io import BytesIO
+from typing import Any, Dict
+
+from fastapi import APIRouter, HTTPException, UploadFile, File
+from fastapi.responses import FileResponse
+from PIL import Image
+
+router = APIRouter(prefix="/branding", tags=["branding"])
+
+_BRANDING_DIR = os.path.join(os.getcwd(), "data", "branding")
+_LOGO_PATH = os.path.join(_BRANDING_DIR, "logo.png")
+_FAVICON_PATH = os.path.join(_BRANDING_DIR, "favicon.ico")
+
+
+def _ensure_branding_dir() -> None:
+    os.makedirs(_BRANDING_DIR, exist_ok=True)
+
+
+def _resize_image(image: Image.Image, max_size: int = 300) -> Image.Image:
+    image = image.convert("RGBA")
+    image.thumbnail((max_size, max_size))
+    return image
+
+
+@router.get("/logo.png")
+async def branding_logo() -> FileResponse:
+    if not os.path.exists(_LOGO_PATH):
+        raise HTTPException(status_code=404, detail="Logo not found")
+    headers = {"Cache-Control": "public, max-age=300"}
+    return FileResponse(_LOGO_PATH, media_type="image/png", headers=headers)
+
+
+@router.get("/favicon.ico")
+async def branding_favicon() -> FileResponse:
+    if not os.path.exists(_FAVICON_PATH):
+        raise HTTPException(status_code=404, detail="Favicon not found")
+    headers = {"Cache-Control": "public, max-age=300"}
+    return FileResponse(_FAVICON_PATH, media_type="image/x-icon", headers=headers)
+
+
+async def save_branding_image(file: UploadFile) -> Dict[str, Any]:
+    if not file.content_type or not file.content_type.startswith("image/"):
+        raise HTTPException(status_code=400, detail="Please upload an image file.")
+    content = await file.read()
+    if not content:
+        raise HTTPException(status_code=400, detail="Uploaded file is empty.")
+    try:
+        image = Image.open(BytesIO(content))
+    except OSError as exc:
+        raise HTTPException(status_code=400, detail="Image file could not be read.") from exc
+
+    _ensure_branding_dir()
+    image = _resize_image(image, 300)
+    image.save(_LOGO_PATH, format="PNG")
+
+    favicon = image.copy()
+    favicon.thumbnail((64, 64))
+    try:
+        favicon.save(_FAVICON_PATH, format="ICO", sizes=[(32, 32), (64, 64)])
+    except OSError:
+        favicon.save(_FAVICON_PATH, format="ICO")
+
+    return {"status": "ok", "width": image.width, "height": image.height}