Merge pull request #62 from RandomProgramm3r/develop

refactor(user, validators): extract PromoActivationService & simplify password validators

This commit consolidates and improves core user-related logic by:

- Extracting promo code activation functionality from `PromoActivateView` into a new `PromoActivationService` in `user/services.py`, which now handles:
  - User targeting (age, country) checks
  - Promo active status verification
  - Anti‑fraud validation
  - Atomic issuance for common and unique promo codes
  - Granular exceptions (`PromoActivationError`, `TargetingError`, etc.) for clearer API error responses
- Simplifying password validation by:
  - Removing the `BaseCountPasswordValidator` abstract class in favor of standalone validators
  - Renaming classes for brevity (e.g. `AsciiValidator`, `UppercaseValidator`)
  - Leveraging built‑in methods like `isascii()` and `isupper()` for clarity and performance
  - Using `ngettext` to enhance internationalized, pluralized error messages
  - Updating `settings.py` to reference new validator names and options

Both the view and validator integrations have been streamlined for maintainability and adherence to Django conventions.

Author: RandomProgramm3r

promo_code/promo_code/settings.py

@@ -178,27 +178,23 @@ def load_bool(name, default):
         '.NumericPasswordValidator',
     },
     {
-        'NAME': 'promo_code.validators.ASCIIOnlyPasswordValidator',
+        'NAME': 'promo_code.validators.AsciiValidator',
     },
     {
-        'NAME': 'promo_code.validators.SpecialCharacterPasswordValidator',
-        'OPTIONS': {'min_count': 1},
+        'NAME': 'promo_code.validators.SpecialCharacterValidator',
+        'OPTIONS': {'special_chars': '[@$!%*?&]'},
     },
     {
-        'NAME': 'promo_code.validators.NumericPasswordValidator',
-        'OPTIONS': {'min_count': 1},
+        'NAME': 'promo_code.validators.NumericValidator',
     },
     {
-        'NAME': 'promo_code.validators.LowercaseLatinLetterPasswordValidator',
-        'OPTIONS': {'min_count': 1},
+        'NAME': 'promo_code.validators.LowercaseValidator',
     },
     {
-        'NAME': 'promo_code.validators.UppercaseLatinLetterPasswordValidator',
-        'OPTIONS': {'min_count': 1},
+        'NAME': 'promo_code.validators.UppercaseValidator',
     },
 ]
 
-
 PASSWORD_HASHERS = [
     'django.contrib.auth.hashers.Argon2PasswordHasher',
     'django.contrib.auth.hashers.PBKDF2PasswordHasher',