sync from local backup

user/qr_auth.py

@@ -0,0 +1,60 @@
+import uuid
+import time
+from django.core.cache import cache
+
+QR_TOKEN_PREFIX = "qr_token:"
+QR_TOKEN_EXPIRE = 300
+QR_CONFIRM_EXPIRE = 120
+
+
+def generate_qr_token():
+    token = uuid.uuid4().hex
+    key = f"{QR_TOKEN_PREFIX}{token}"
+    cache.set(key, {
+        "status": "waiting",
+        "user_id": None,
+        "scan_user_id": None,
+        "scan_username": None,
+        "created_at": time.time(),
+        "expires_at": time.time() + QR_TOKEN_EXPIRE,
+    }, QR_TOKEN_EXPIRE)
+    return token
+
+
+def get_qr_status(token):
+    key = f"{QR_TOKEN_PREFIX}{token}"
+    data = cache.get(key)
+    if not data:
+        return {"status": "expired"}
+    return data
+
+
+def scan_qr(token, user_id, username):
+    key = f"{QR_TOKEN_PREFIX}{token}"
+    data = cache.get(key)
+    if not data or data["status"] != "waiting":
+        return False
+    data["status"] = "scanned"
+    data["scan_user_id"] = user_id
+    data["scan_username"] = username
+    data["expires_at"] = time.time() + QR_CONFIRM_EXPIRE
+    cache.set(key, data, QR_CONFIRM_EXPIRE)
+    return True
+
+
+def confirm_qr(token):
+    key = f"{QR_TOKEN_PREFIX}{token}"
+    data = cache.get(key)
+    if not data or data["status"] != "scanned":
+        return None
+    data["status"] = "confirmed"
+    cache.set(key, data, 60)
+    return data
+
+
+def cancel_qr(token):
+    key = f"{QR_TOKEN_PREFIX}{token}"
+    data = cache.get(key)
+    if data:
+        data["status"] = "cancelled"
+        cache.set(key, data, 60)