from sys import (exit)
from subprocess import (call)
from .pre_base import (BasePreFlight)
from .kiplot import (GS, check_eeschema_do)
from .error import (KiPlotConfigurationError)
from .misc import (CMD_EESCHEMA_DO, ERC_ERROR)
from .log import (get_logger)

logger = get_logger(__name__)


class ERC(BasePreFlight):
    def __init__(self, name, value):
        super().__init__(name, value)
        if not isinstance(value, bool):
            raise KiPlotConfigurationError('must be boolean')
        self._enabled = value
        self._sch_related = True

    def run(self):
        check_eeschema_do()
        cmd = [CMD_EESCHEMA_DO, 'run_erc']
        if GS.filter_file:
            cmd.extend(['-f', GS.filter_file])
        cmd.extend([GS.sch_file, GS.out_dir])
        # If we are in verbose mode enable debug in the child
        if GS.debug_enabled:
            cmd.insert(1, '-vv')
            cmd.insert(1, '-r')
        logger.info('- Running the ERC')
        logger.debug('Executing: '+str(cmd))
        ret = call(cmd)
        if ret:
            if ret < 0:
                logger.error('ERC errors: %d', -ret)
            else:
                logger.error('ERC returned %d', ret)
            exit(ERC_ERROR)

    def apply(self):
        pass


# Register it
BasePreFlight.register('run_erc', ERC)