"""get_database_info MCP tool implementation."""

from xer_mcp.db import db


async def get_database_info() -> dict:
    """Get information about the currently loaded database.

    Returns connection details for direct SQL access including
    database path, schema information, and metadata.

    Returns:
        Dictionary with database info or error if no database loaded
    """
    if not db.is_initialized:
        return {
            "error": {
                "code": "NO_FILE_LOADED",
                "message": "No XER file is loaded. Use the load_xer tool first.",
            }
        }

    return {
        "database": db.get_database_info(),
    }