Initial commit: InviteMe event registration app

app/services/qr_service.py

@@ -0,0 +1,37 @@
+import qrcode
+from pathlib import Path
+from flask import current_app, url_for
+
+
+def generate_qr_for_guest(guest, base_url=None):
+    """Генерирует QR-код для гостя и сохраняет его в uploads/qrcodes/."""
+    token = guest.token
+    qr_folder = Path(current_app.config["QR_FOLDER"])
+    qr_folder.mkdir(parents=True, exist_ok=True)
+
+    qr_filename = f"{token}.png"
+    qr_path = qr_folder / qr_filename
+
+    # URL, который будет закодирован в QR
+    if base_url is None:
+        try:
+            check_in_url = url_for("main.check_in", token=token, _external=True)
+        except Exception:
+            check_in_url = f"http://localhost:5000/check-in?token={token}"
+    else:
+        check_in_url = f"{base_url.rstrip('/')}/check-in?token={token}"
+
+    qr = qrcode.QRCode(
+        version=1,
+        error_correction=qrcode.constants.ERROR_CORRECT_H,
+        box_size=10,
+        border=4,
+    )
+    qr.add_data(check_in_url)
+    qr.make(fit=True)
+
+    img = qr.make_image(fill_color="black", back_color="white")
+    img.save(str(qr_path))
+
+    guest.qr_filename = qr_filename
+    return qr_path, check_in_url