Update to support Pydantic v2 syntax

- Replaced BaseSettings import from pydantic to pydantic-settings
- Updated validator to field_validator with mode='before'
- Changed Config inner class to model_config dict
- Added pydantic-settings to requirements.txt

app/core/config.py

@@ -1,7 +1,8 @@
 from pathlib import Path
-from typing import List
+from typing import List, Union
 
-from pydantic import BaseSettings, validator
+from pydantic import field_validator
+from pydantic_settings import BaseSettings
 
 
 class Settings(BaseSettings):
@@ -13,8 +14,8 @@ class Settings(BaseSettings):
     # CORS settings
     BACKEND_CORS_ORIGINS: List[str] = ["*"]
 
-    @validator("BACKEND_CORS_ORIGINS", pre=True)
+    @field_validator("BACKEND_CORS_ORIGINS", mode="before")
-    def assemble_cors_origins(cls, v: str | List[str]) -> List[str] | str:
+    def assemble_cors_origins(cls, v: Union[str, List[str]]) -> Union[List[str], str]:
         if isinstance(v, str) and not v.startswith("["):
             return [i.strip() for i in v.split(",")]
         elif isinstance(v, (list, str)):
@@ -37,9 +38,10 @@ class Settings(BaseSettings):
     # Configure logging
     LOG_LEVEL: str = "INFO"
     
-    class Config:
+    model_config = {
-        case_sensitive = True
+        "case_sensitive": True,
-        env_file = ".env"
+        "env_file": ".env"
+    }
 
 
 # Create all necessary directories

requirements.txt

@@ -4,6 +4,7 @@ sqlalchemy>=2.0.0
 alembic>=1.10.0
 pydantic>=2.0.0
 pydantic[email]>=2.0.0
+pydantic-settings>=2.0.0
 python-jose[cryptography]>=3.3.0
 passlib[bcrypt]>=1.7.4
 python-multipart>=0.0.6