"""Configuration from environment variables."""

import os


KB_ENGINE_URL = os.environ.get("KB_ENGINE_URL", "http://localhost:8000")
KB_API_KEY = os.environ.get("KB_API_KEY", "")
KB_MCP_API_KEY = os.environ.get("KB_MCP_API_KEY", "")
KB_MCP_PORT = int(os.environ.get("KB_MCP_PORT", "3000"))
KB_MCP_ALLOWED_HOSTS = os.environ.get("KB_MCP_ALLOWED_HOSTS", "")


def parse_allowed_hosts() -> list[str]:
    """Parse KB_MCP_ALLOWED_HOSTS into a list of host strings."""
    if not KB_MCP_ALLOWED_HOSTS:
        return []
    return [h.strip() for h in KB_MCP_ALLOWED_HOSTS.split(",") if h.strip()]