# Configuration module that handles both
# command-line options and config file.
# Call init() once at the beginning of the application
# to read everything in.

import ConfigParser, optparse, os

def _check_config(config, config_file):
    new_data = False
    if not config.has_section('global'):
        config.add_section('global')
        new_data = True
    if not config.has_option('global', 'entries'):
        config.set('global', 'entries', '20')
        new_data = True
    if not config.has_option('global', 'refreshtime'):
        config.set('global', 'refreshtime', '5')
        new_data = True
    if not config.has_option('global', 'trayicon'):
        config.set('global', 'trayicon', '1')
        new_data = True
    if not config.has_option('global', 'taskbar_when_minimized'):
        config.set('global', 'taskbar_when_minimized', '0')
        new_data = True
    if not config.has_option('global', 'debug'):
        config.set('global', 'debug', '0')
        new_data = True
    if not config.has_option('global', 'dbfile'):
        config.set('global', 'dbfile', '~/.hrafn.db')
        new_data = True

    # Write out new config data, if needed
    if new_data:
        config_filehandle = open(os.path.expanduser(config_file), 'wb')
        config.write(config_filehandle)
        config_filehandle.close()


def init():
    global options
    global config
    global debug

    parser = optparse.OptionParser()
    parser.add_option('-c' ,'--config', dest="filename", default="~/.hrafn.conf", help="read configuration from FILENAME instead of the default ~/.hrafn.conf")
    parser.add_option('-n' ,'--no-resize', dest="resize", action='store_false', default=True, help="use the default window size instead of the size from the last session")
    (options, args) = parser.parse_args()

    # Read in config, and set config options to defaults,
    # if they are not present
    config = ConfigParser.ConfigParser()
    config.read(os.path.expanduser(options.filename))
    _check_config(config, options.filename)

    # Set the convenient global debug flag
    debug = False
    if config.get('global', 'debug') == 1:
        debug = True