first commit

backend/app/voice/validators.py

@@ -0,0 +1,52 @@
+import re
+from uuid import UUID
+
+from fastapi import HTTPException, status
+from sqlalchemy import select
+from sqlalchemy.orm import Session
+
+from ..models import PhoneNumber, UserAccount
+
+
+def normalize_phone_digits(value: str) -> str:
+    digits = re.sub(r"\D", "", value.strip())
+    if len(digits) > 10 and digits.startswith("91"):
+        digits = digits[2:]
+    if len(digits) > 10:
+        digits = digits[-10:]
+    return digits
+
+
+def format_bonvoice_destination(value: str) -> str:
+    digits = re.sub(r"\D", "", value.strip())
+    if len(digits) == 10:
+        return f"91{digits}"
+    return digits
+
+
+def require_owned_did(db: Session, user: UserAccount, from_value: str) -> PhoneNumber:
+    normalized = normalize_phone_digits(from_value)
+    if len(normalized) != 10:
+        raise HTTPException(
+            status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,
+            detail="from must be a valid 10-digit purchased number",
+        )
+    number = db.scalar(
+        select(PhoneNumber).where(
+            PhoneNumber.user_id == user.id,
+            PhoneNumber.status == "assigned",
+            PhoneNumber.phone_number == normalized,
+        )
+    )
+    if not number:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="from must be a purchased number assigned to your account",
+        )
+    return number
+
+def parse_user_id(value: str) -> UUID:
+    try:
+        return UUID(value)
+    except ValueError as exc:
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail="Invalid user id") from exc