Additonal validation and better type hints

src/alpine_bits_python/schemas.py

@@ -10,10 +10,18 @@ from XML generation (xsdata) follows clean architecture principles.
 """
 
 from datetime import date
+from enum import Enum
 
 from pydantic import BaseModel, EmailStr, Field, field_validator, model_validator
 
 
+# phonetechtype enum 1,3,5 voice, fax, mobile
+class PhoneTechType(Enum):
+    VOICE = "1"
+    FAX = "3"
+    MOBILE = "5"
+
+
 class PhoneNumber(BaseModel):
     """Phone number with optional type."""
 
@@ -34,7 +42,7 @@ class CustomerData(BaseModel):
     surname: str = Field(..., min_length=1, max_length=100)
     name_prefix: str | None = Field(None, max_length=20)
     name_title: str | None = Field(None, max_length=20)
-    phone_numbers: list[PhoneNumber] = Field(default_factory=list)
+    phone_numbers: list[tuple[str, None | PhoneTechType]] = Field(default_factory=list)
     email_address: EmailStr | None = None
     email_newsletter: bool | None = None
     address_line: str | None = Field(None, max_length=255)