#!/usr/bin/python3

import argparse
import logging
import os.path
import sys

from keyman_config import __version__

def main():
    parser = argparse.ArgumentParser(description='Convert a Keyman kvk on-screen keyboard file to an LDML file. Optionally print the details of the kvk file.')
    parser.add_argument('-p', "--print", help='print kvk details', action="store_true")
    parser.add_argument('-k', "--keys", help='if printing also print all keys', action="store_true")
    parser.add_argument('kvkfile', help='kvk file')
    parser.add_argument('-o', '--output', metavar='LDMLFILE', help='output LDML file location')
    parser.add_argument('--version', action='version', version='%(prog)s version '+__version__)
    parser.add_argument('-v', '--verbose', action='store_true', help='verbose logging')
    parser.add_argument('-vv', '--veryverbose', action='store_true', help='very verbose logging')

    args = parser.parse_args()
    if args.verbose:
        logging.basicConfig(level=logging.INFO, format='%(levelname)s:%(message)s')
    elif args.veryverbose:
        logging.basicConfig(level=logging.DEBUG, format='%(levelname)s:%(message)s')
    else:
        logging.basicConfig(format='%(levelname)s:%(message)s')

    from keyman_config.kvk2ldml import parse_kvk_file, print_kvk, convert_ldml, output_ldml

    name, ext = os.path.splitext(args.kvkfile)
    # Check if input file extension is kvk
    if ext != ".kvk":
        logging.error("km-kvk2ldml: error, input file %s is not a kvk file.", args.kvkfile)
        logging.error("km-kvk2ldml [-h] [-k] [-p] [-o <ldml file>] <kvk file>")
        sys.exit(2)

    # Check if input kvk file exists
    if not os.path.isfile(args.kvkfile):
        logging.error("km-kvk2ldml: error, input file %s does not exist.", args.kvkfile)
        logging.error("km-kvk2ldml [-h] [-k] [-p] [-o <ldml file>] <kvk file>")
        sys.exit(2)

    kvkData = parse_kvk_file(args.kvkfile)

    if args.print:
        print_kvk(kvkData, args.keys)

    if args.output:
        outputfile = args.output
    else:
        outputfile = name + ".ldml"

    with open(outputfile, 'wb') as ldmlfile:
        ldml = convert_ldml(kvkData)
        output_ldml(ldmlfile, ldml)

if __name__ == "__main__":
    main()