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"""A utility module for making standalone scripts to start servers.

Scripts in tools/ can use this module to start servers that are normally used
for layout tests, outside of the layout test runner.
"""

import logging
import optparse

from blinkpy.common.host import Host
from blinkpy.web_tests.port.factory import configuration_options


class RawTextHelpFormatter(optparse.IndentedHelpFormatter):
    def format_description(self, description):
        return description


def main(server_constructor, input_fn=None, argv=None, description=None, **kwargs):
    input_fn = input_fn or raw_input

    parser = optparse.OptionParser(description=description, formatter=RawTextHelpFormatter())
    parser.add_option('--output-dir', type=str, default=None,
                      help='output directory, for log files etc.')
    parser.add_option('-v', '--verbose', action='store_true',
                      help='print more information, including port numbers')
    for opt in configuration_options():
        parser.add_option(opt)
    options, _ = parser.parse_args(argv)

    logging.basicConfig()
    logger = logging.getLogger()
    logger.setLevel(logging.DEBUG if options.verbose else logging.INFO)

    host = Host()
    port_obj = host.port_factory.get(options=options)
    if not options.output_dir:
        options.output_dir = port_obj.default_results_directory()

    # Create the output directory if it doesn't already exist.
    port_obj.host.filesystem.maybe_make_directory(options.output_dir)

    server = server_constructor(port_obj, options.output_dir, **kwargs)
    server.start()
    try:
        _ = input_fn('Hit any key to stop the server and exit.')
    except (KeyboardInterrupt, EOFError):
        pass

    server.stop()