add number validation

app/schemas.py

@@ -1,3 +1,4 @@
+import re
 from datetime import datetime
 from typing import Literal
 
@@ -138,6 +139,24 @@ def _normalize_mac(mac: str) -> str:
     return mac.strip().upper().replace(":", "-")
 
 
+_PHONE_ERROR = "Enter a valid phone number"
+
+
+def _normalize_phone(raw: str) -> str:
+    """Validate a Maldivian mobile number and return the 7-digit local form.
+
+    Rules: 7 digits, starts with 9 or 7. A 960/+960 country code is stripped ONLY
+    when the number is 10 digits (960 + 7) — a bare 7-digit number like 9601234 is
+    a valid local number and is never stripped.
+    """
+    digits = re.sub(r"\D", "", raw or "")
+    if len(digits) == 10 and digits.startswith("960"):
+        digits = digits[3:]
+    if len(digits) == 7 and digits[0] in ("7", "9"):
+        return digits
+    raise ValueError(_PHONE_ERROR)
+
+
 class DeviceOut(BaseModel):
     mac_address: str
     group: str | None = None       # radusergroup.groupname
@@ -151,7 +170,7 @@ class DeviceCreate(BaseModel):
     mac_address: str = Field(pattern=_MAC_RE, max_length=17)
     group: str = Field(min_length=1, max_length=64)
     name: str = Field(min_length=1, max_length=128, description="Customer name (metadata, ignored by RADIUS)")
-    phone: str = Field(min_length=1, max_length=32, description="Phone number (metadata, ignored by RADIUS)")
+    phone: str = Field(min_length=1, max_length=32, description="7-digit mobile (9/7…), 960/+960 optional")
     alias: str | None = Field(default=None, max_length=64, description="Optional device alias (metadata)")
 
     @field_validator("mac_address")
@@ -159,6 +178,11 @@ class DeviceCreate(BaseModel):
     def _norm(cls, v: str) -> str:
         return _normalize_mac(v)
 
+    @field_validator("phone")
+    @classmethod
+    def _norm_phone(cls, v: str) -> str:
+        return _normalize_phone(v)
+
 
 class DeviceEdit(BaseModel):
     mac_address: str = Field(pattern=_MAC_RE, max_length=17)
@@ -173,6 +197,11 @@ class DeviceEdit(BaseModel):
     def _norm(cls, v: str) -> str:
         return _normalize_mac(v)
 
+    @field_validator("phone")
+    @classmethod
+    def _norm_phone(cls, v: str | None) -> str | None:
+        return None if v is None else _normalize_phone(v)
+
     @model_validator(mode="after")
     def _at_least_one(self):
         if all(v is None for v in (self.group, self.status, self.name, self.phone, self.alias)):