import os
from typing import Optional

# Database connection settings
DATABASE_URL = os.getenv("DATABASE_URL", "postgresql://haproxy_user:haproxy_password@postgres:5432/haproxy_openmanager")

# Redis connection
REDIS_URL = os.getenv("REDIS_URL", "redis://localhost:6379")

# CORS settings
# Configurable via CORS_ORIGINS env var (comma-separated), e.g. "http://localhost:3000,http://server:8080"
# Default allows common development and Docker Compose origins
_cors_env = os.getenv("CORS_ORIGINS", "")
CORS_ORIGINS = [o.strip() for o in _cors_env.split(",") if o.strip()] if _cors_env else [
    "http://localhost:3000",
    "http://localhost:8080",
    "http://localhost:8000",
]

# Security settings
SECRET_KEY = os.getenv("SECRET_KEY", "your-secret-key-here")
JWT_SECRET_KEY = SECRET_KEY  # Alias for JWT middleware
ALGORITHM = "HS256"
JWT_ALGORITHM = ALGORITHM  # Alias for JWT middleware
ACCESS_TOKEN_EXPIRE_MINUTES = 30

# Logging level
LOG_LEVEL = os.getenv("LOG_LEVEL", "INFO")

# Public URL configuration (for agent installation scripts)
PUBLIC_URL = os.getenv("PUBLIC_URL", "http://localhost:8000")
MANAGEMENT_BASE_URL = os.getenv("MANAGEMENT_BASE_URL", PUBLIC_URL)  # Backward compatibility

# Agent settings
AGENT_HEARTBEAT_TIMEOUT_SECONDS = 15
AGENT_CONFIG_SYNC_INTERVAL_SECONDS = 30

# Entity snapshot enabled by default (rollback functionality)
# Set to "false" only if you need to disable snapshot temporarily
ENTITY_SNAPSHOT_ENABLED = os.getenv("ENTITY_SNAPSHOT_ENABLED", "true").lower() == "true"