#!/usr/bin/env python3
"""Generate the control files.."""

import json
import sys
from pathlib import Path

from container import ConfigError, Container
from log import Log


def load_container_config(file: Path, log: Log) -> dict | None:
    """Load a container config."""
    if not file.exists():
        log.log_error(f"{file.name} does not exist!")
        return None
    data = {}
    with file.open("r", encoding="utf-8") as fp:
        try:
            data = json.load(fp)
        except json.JSONDecodeError as e:
            log.log_error(f"{file.name} is not a valid JSON file!")
            log.log_debug(f"Exception: {e}")
            return None
        except UnicodeDecodeError as e:
            log.log_error(f"{file.name} is not a valid UTF8 file!")
            log.log_debug(f"Exception: {e}")
            return None
        except OSError as e:
            log.log_error(f"{file.name} could not be read!")
            log.log_debug(f"Exception: {e}")
            return None
    return data


def create_container_from_config(data: dict, log: Log) -> Container | None:
    """Create a container object."""
    log.log_info("Creating container...")
    log.log_debug(f"Container config is:\n{data}")
    ct: Container | None = None
    try:
        ct = Container(data)
    except ConfigError as e:
        log.log_error(f"{e}")
        return None
    return ct


def main() -> None:
    """Run the program."""
    argc_threshold = 2
    if len(sys.argv) < argc_threshold:
        logger = Log("/dev/stdout")
        logger.log_error("No arguments passed!")
        sys.exit(1)
    config_file = ""
    log_file = ""
    if len(sys.argv) >= argc_threshold:
        config_file = sys.argv[1]
    if len(sys.argv) > argc_threshold:
        log_file = sys.argv[2]
    logger = Log(log_file)
    data = load_container_config(Path(config_file), logger)
    if data is None:
        logger.log_error(f"{config_file} is invalid, aborting!")
        sys.exit(1)
    try:
        ct = create_container_from_config(data, logger)
    except Exception as e:  # noqa: BLE001
        logger.log_error(e)
        sys.exit(1)
    print(ct)
    print(vars(ct))


if __name__ == "__main__":
    main()