#! /usr/bin/env python3

import argparse
import phonagen

def parseArgs():
  # Define argument parser
  parser = argparse.ArgumentParser(description='Convert an example list to a rule generator.')
  parser.add_argument('file', metavar='listfile', help='list file to convert')
  parser.add_argument('--id', metavar='id', help='id of the generator', required = True)
  parser.add_argument('--description', metavar='description', help='description of the generator; empty if not provided', default='')
  parser.add_argument('--phonology', metavar='phonology', help='id of the phonology on which is based the generator', required = True)
  parser.add_argument('--phonologyfile', metavar='phonologyfile', help='file containing the phonology; mandatory; phonology will present in the output', required = True)
  parser.add_argument('--output', metavar='output-file', help='Output file for the generator. The file is printed to standard output if not given.', default='')
  # Parse arguments
  return parser.parse_args()

# Main
if __name__ == '__main__':
  args = parseArgs()
  generator = phonagen.RuleGenerator(id = args.id, description = args.description, phonology = args.phonology)
  phonology = phonagen.Phonology()
  phonologyFile = phonagen.PhonagenFile()
  phonologyFile.load(args.phonologyfile)
  phonology = phonologyFile.getPhonology(args.phonology)
  #
  generator.fromExamples(args.file, phonology)
  phonagenFile = phonagen.PhonagenFile()
  phonagenFile.addPhonology(phonology)
  phonagenFile.addGenerator(generator)
  phonagenFile.writeTo(args.output)