From de000905b3e5a6213175a45b9317bae211889fdb Mon Sep 17 00:00:00 2001
From: Raykov-MS <raykovms@rshb.email.ru>
Date: Thu, 14 May 2026 16:04:39 +0300
Subject: [PATCH] Add Constants

---
 api/src/core/CONSTANTS.py          | 31 ++++++++++++++++++++++++++++++
 api/src/core/exception_handlers.py | 31 ++++++++++--------------------
 2 files changed, 41 insertions(+), 21 deletions(-)
 create mode 100644 api/src/core/CONSTANTS.py

diff --git a/api/src/core/CONSTANTS.py b/api/src/core/CONSTANTS.py
new file mode 100644
index 0000000..3cbaac0
--- /dev/null
+++ b/api/src/core/CONSTANTS.py
@@ -0,0 +1,31 @@
+VALIDATION_PREFIXES = (
+    "computed_field:",
+    "normative_field:",
+    "unknown_column:",
+    "key_field:",
+    "structural_field:",
+    "bad_column_format:",
+    "bad_booking_year:",
+    "bad_booking_quarter:",
+    "unsupported_scope:",
+)
+
+PG_404_ERRORS = (
+    "не существует",
+    "не принадлежит",
+    "not found",
+)
+PG_409_ERRORS = (
+    "unique",
+    "duplicate",
+    "foreign key",
+)
+PG_400_ERRORS = (
+    "violates check constraint",
+)
+PG_403_ERRORS = (
+    "permission denied",
+    "insufficient privilege",
+    "role_not_allowed:",
+    "window_closed:",
+)
diff --git a/api/src/core/exception_handlers.py b/api/src/core/exception_handlers.py
index 4559291..b1eaa97 100644
--- a/api/src/core/exception_handlers.py
+++ b/api/src/core/exception_handlers.py
@@ -9,21 +9,14 @@ from src.core.errors import (
     UsernameConflictException,
     ValidationException,
 )
-
-
-VALIDATION_PREFIXES = (
-    "computed_field:",
-    "normative_field:",
-    "unknown_column:",
-    "key_field:",
-    "structural_field:",
-    "bad_column_format:",
-    "bad_booking_year:",
-    "bad_booking_quarter:",
-    "unsupported_scope:",
+from src.core.CONSTANTS import (
+    VALIDATION_PREFIXES,
+    PG_404_ERRORS,
+    PG_409_ERRORS,
+    PG_400_ERRORS,
+    PG_403_ERRORS,
 )
 
-
 def _error_payload(code: str | int, message: str, field: str | None = None) -> dict:
     """Формирует структурированный payload ошибки по спеке."""
     return {
@@ -60,19 +53,15 @@ def map_sqlalchemy_error(exc: SQLAlchemyError) -> tuple[int, str, str, str | Non
     if any(low.startswith(prefix) for prefix in VALIDATION_PREFIXES):
         code, field = _parse_prefixed_validation_error(message)
         return status.HTTP_422_UNPROCESSABLE_ENTITY, code, message, field
-    if low.startswith("role_not_allowed:") or low.startswith("window_closed:"):
-        return status.HTTP_403_FORBIDDEN, "access_denied", message, None
-    if "не существует" in low or "не принадлежит" in low or "not found" in low:
+    if any(error in low for error in PG_404_ERRORS):
         return status.HTTP_404_NOT_FOUND, "not_found", message, None
-    if "permission denied" in low or "insufficient privilege" in low:
+    if any(error in low for error in PG_403_ERRORS):
         return status.HTTP_403_FORBIDDEN, "access_denied", message, None
 
     if isinstance(exc, IntegrityError):
-        if "unique" in low or "duplicate" in low:
+        if any(error in low for error in PG_409_ERRORS):
             return status.HTTP_409_CONFLICT, "conflict", message, None
-        if "foreign key" in low:
-            return status.HTTP_409_CONFLICT, "conflict", message, None
-        if "violates check constraint" in low:
+        if any(error in low for error in PG_400_ERRORS):
             return status.HTTP_400_BAD_REQUEST, "db_error", message, None
         return status.HTTP_400_BAD_REQUEST, "db_error", message, None