from .formats import *

class DealConverter(object):
    def __init__(self, input_file=None):
        self.input = input_file
        self.formats = {}
        if input_file is not None:
            self.parser = self._detect_format(self.input)

    def output(self, output_files):
        deal_set = sorted(self.parser.parse(self.input), key=lambda d:d.number)
        for output in output_files:
            self._detect_format(output).output(output, deal_set)

    def detect_format(self, filename):
        for deal_format in globals()['formats'].__all__:
            if deal_format not in self.formats:
                self.formats[deal_format] = getattr(
                    globals()[deal_format],
                    deal_format.upper() + 'Format')()
            if self.formats[deal_format].match_file(filename):
                return self.formats[deal_format]
        raise RuntimeError('Unrecognized file extension: %s' % filename)