"""
Miscellaneous logging utilities.
"""

from io import StringIO

import yaml
from lightning.fabric.utilities.rank_zero import rank_zero_only
from rich.console import Console
from rich.panel import Panel


@rank_zero_only
def pretty_print_yaml_config(logger, config: dict) -> None:
    """
    Pretty print config with rich formatting. Assumes that the config is already saved as a
    dictionary - this can be done by calling `asdict` on the dataclass or loading in the config
    from a yaml file.

    NOTE: this function is only called on rank 0.

    Args:
        logger: Logger object to log the formatted output to.
        config: Dictionary containing the config to pretty print.
    """
    # Create string buffer
    output = StringIO()
    console = Console(file=output, force_terminal=False)

    # Convert to YAML string first
    yaml_str = yaml.dump(
        config, default_flow_style=False, sort_keys=False, Dumper=yaml.SafeDumper
    )

    # Create formatted panel
    panel = Panel(
        yaml_str,
        border_style="blue",
        padding=(0, 1),  # Reduced padding
        expand=False,  # Don't expand to terminal width
    )

    # Print to buffer
    console.print(panel)

    # Log the formatted output
    for line in output.getvalue().splitlines():
        logger.info(line)