from sys import exit
from .misc import (EXIT_BAD_ARGS)
from .log import (get_logger)

logger = get_logger(__name__)


class GS(object):
    """
    Class to keep the global settings.
    Is a static class, just a placeholder for some global variables.
    """
    pcb_file = None
    sch_file = None
    out_dir = None
    filter_file = None
    debug_enabled = False

    @staticmethod
    def check_pcb():
        if not GS.pcb_file:
            logger.error('No PCB file found (*.kicad_pcb), use -b to specify one.')
            exit(EXIT_BAD_ARGS)

    @staticmethod
    def check_sch():
        if not GS.sch_file:
            logger.error('No SCH file found (*.sch), use -e to specify one.')
            exit(EXIT_BAD_ARGS)