first commit

backend/app/phone_number_validators.py

@@ -0,0 +1,30 @@
+import re
+
+INDIAN_MOBILE_RE = re.compile(r"^[6-9]\d{9}$")
+
+
+def normalize_phone_number(value: str) -> str:
+    cleaned = re.sub(r"\D", "", value.strip())
+    if cleaned.startswith("91") and len(cleaned) == 12:
+        cleaned = cleaned[2:]
+    if cleaned.startswith("0") and len(cleaned) == 11:
+        cleaned = cleaned[1:]
+    if not INDIAN_MOBILE_RE.fullmatch(cleaned):
+        raise ValueError("Enter a 10-digit mobile number without +91, e.g. 9876543210")
+    return cleaned
+
+
+def validate_price(value: float, label: str) -> float:
+    if value < 0:
+        raise ValueError(f"{label} must be zero or greater")
+    if value > 999999:
+        raise ValueError(f"{label} is too large")
+    return round(float(value), 2)
+
+
+def validate_per_min_price(value: float, label: str) -> float:
+    if value < 0:
+        raise ValueError(f"{label} must be zero or greater")
+    if value > 9999:
+        raise ValueError(f"{label} is too large")
+    return round(float(value), 4)