"""Application configuration using pydantic-settings."""
from functools import lru_cache
from typing import Literal
from pydantic_settings import BaseSettings, SettingsConfigDict
class Settings(BaseSettings):
"""Application settings loaded from environment variables."""
model_config = SettingsConfigDict(
env_file=".env",
env_file_encoding="utf-8",
extra="ignore",
)
database_url: str = "postgresql+asyncpg://postgres:postgres@localhost:5433/mnemos"
embedding_model: str = "nomic-embed-text"
ollama_base_url: str = "http://localhost:11434"
ollama_model: str = "nomic-embed-text"
chunk_size: int = 200
chunk_overlap: int = 30
min_chunk_length: int = 20
host: str = "0.0.0.0"
port: int = 8000
@property
def embedding_dimension(self) -> int:
"""Return embedding dimension for Ollama model."""
return 768
@lru_cache
def get_settings() -> Settings:
"""Get cached settings instance."""
return Settings()
