Fix parsing phone and add redis storage for FSM in telegram bot

birthday_pool_bot/telegram_bot/ui/utils.py

@@ -3,13 +3,15 @@ import re
 
 from aiogram import types
 from aiogram.types import User as TelegramUser
+from pydantic_core import PydanticCustomError
+from pydantic_extra_types.phone_numbers import PhoneNumber
 
 
 BIRTHDATE_REGEXP = re.compile(r"^(?P<day>\d{2}).(?P<month>\d{2}).(?P<year>\d{4})$")
 
 
-def parse_date(message: types.Message) -> datetime.date:
-    if (re_match := BIRTHDATE_REGEXP.match(message.text)) is None:
+def parse_date(text: str) -> datetime.date | None:
+    if (re_match := BIRTHDATE_REGEXP.match(text)) is None:
         return
 
     return datetime.date(
@@ -19,7 +21,18 @@ def parse_date(message: types.Message) -> datetime.date:
     )
 
 
+def parse_phone(text: str) -> str | None:
+    phone = text
+    if not phone.startswith("+"):
+        phone = f"+{phone}"
+    try:
+        PhoneNumber._validate(phone, None)
+    except PydanticCustomError:
+        return
+
+    return phone
+
+
 def get_telegram_user_full_name(user: TelegramUser) -> str:
     name_parts = (user.first_name, user.last_name)
     return " ".join(filter(None, name_parts))
-