"""
LandveX Admin Backend — Configuration
"""
from pydantic_settings import BaseSettings, SettingsConfigDict
from typing import List, Optional


class Settings(BaseSettings):
    """Application settings loaded from environment variables."""
    
    model_config = SettingsConfigDict(
        extra="allow",
        env_file=".env",
        env_file_encoding="utf-8",
        case_sensitive=True
    )
    
    # Application
    APP_NAME: str = "LandveX Admin Backend"
    APP_VERSION: str = "1.0.0"
    DEBUG: bool = False
    
    # Database
    DATABASE_URL: str = "postgresql+asyncpg://postgres:postgres@localhost:5432/landvex_admin"
    DATABASE_POOL_SIZE: int = 20
    DATABASE_MAX_OVERFLOW: int = 10
    
    # Schema isolation
    DEFAULT_TENANT_SCHEMA: str = "public"
    TENANT_SCHEMA_PREFIX: str = "tenant_"
    
    # Security
    SECRET_KEY: str = "change-me-in-production-landvex-secret-key-2026"
    ACCESS_TOKEN_EXPIRE_MINUTES: int = 60
    REFRESH_TOKEN_EXPIRE_DAYS: int = 7
    ALGORITHM: str = "HS256"
    
    # CORS
    CORS_ORIGINS: List[str] = ["*"]
    CORS_ALLOW_CREDENTIALS: bool = True
    CORS_ALLOW_METHODS: List[str] = ["*"]
    CORS_ALLOW_HEADERS: List[str] = ["*"]
    
    # Audit logging
    AUDIT_LOG_TABLE: str = "audit_logs"
    AUDIT_RETENTION_DAYS: int = 365
    
    # Pagination
    DEFAULT_PAGE_SIZE: int = 20
    MAX_PAGE_SIZE: int = 100


settings = Settings()