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# Source code for pywws.LiveLog

    #!/usr/bin/env python

    # pywws - Python software for USB Wireless Weather Stations
    # http://github.com/jim-easterbrook/pywws
    # Copyright (C) 2008-14  Jim Easterbrook  jim@jim-easterbrook.me.uk

    # This program is free software; you can redistribute it and/or
    # modify it under the terms of the GNU General Public License
    # as published by the Free Software Foundation; either version 2
    # of the License, or (at your option) any later version.

    # This program is distributed in the hope that it will be useful,
    # but WITHOUT ANY WARRANTY; without even the implied warranty of
    # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    # GNU General Public License for more details.

    # You should have received a copy of the GNU General Public License
    # along with this program; if not, write to the Free Software
    # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

    """Get weather data, store it, and process it.

    Run this continuously, having set what tasks are to be done. This
    script can also be run with the ``pywws-livelog`` command. ::
    %s
    For more information on using ``LiveLog.py``, see
    :doc:`../guides/livelogging`.

    """

    from __future__ import absolute_import

    __docformat__ = "restructuredtext en"
    __usage__ = """
     usage: %s [options] data_dir
     options are:
      -h      or --help      display this help
      -l file or --log file  write log information to file
      -v      or --verbose   increase amount of reassuring messages
     data_dir is the root directory of the weather data (e.g. /data/weather)
    """
    __doc__ %= __usage__ % ('python -m pywws.LiveLog')

    from datetime import datetime, timedelta
    import getopt
    import logging
    import os
    import sys
    import time

    from . import DataStore
    from . import Localisation
    from .LogData import DataLogger
    from .Logger import ApplicationLogger
    from . import Process
    from . import Tasks

    def LiveLog(data_dir):
        logger = logging.getLogger('pywws.LiveLog')
        params = DataStore.params(data_dir)
        status = DataStore.status(data_dir)
        # localise application
        Localisation.SetApplicationLanguage(params)
        # open data file stores
        raw_data = DataStore.data_store(data_dir)
        calib_data = DataStore.calib_store(data_dir)
        hourly_data = DataStore.hourly_store(data_dir)
        daily_data = DataStore.daily_store(data_dir)
        monthly_data = DataStore.monthly_store(data_dir)
        # create a DataLogger object
        datalogger = DataLogger(params, status, raw_data)
        # create a RegularTasks object
        asynch = eval(params.get('config', 'asynchronous', 'False'))
        tasks = Tasks.RegularTasks(params, status, raw_data, calib_data,
                                   hourly_data, daily_data, monthly_data,
                                   asynch=asynch)
        # get live data
        try:
            for data, logged in datalogger.live_data(
                                        logged_only=(not tasks.has_live_tasks())):
                if logged:
                    # process new data
                    Process.Process(params, raw_data, calib_data,
                                    hourly_data, daily_data, monthly_data)
                    # do tasks
                    tasks.do_tasks()
                else:
                    tasks.do_live(data)
        except Exception, ex:
            logger.exception(ex)
        finally:
            tasks.stop_thread()
        return 0

    def main(argv=None):
        if argv is None:
            argv = sys.argv
        usage = (__usage__ % (argv[0])).strip()
        try:
            opts, args = getopt.getopt(argv[1:], "hl:v", ['help', 'log=', 'verbose'])
        except getopt.error, msg:
            print >>sys.stderr, 'Error: %s\n' % msg
            print >>sys.stderr, usage
            return 1
        # process options
        logfile = None
        verbose = 0
        for o, a in opts:
            if o in ('-h', '--help'):
                print __doc__.split('\n\n')[0]
                print usage
                return 0
            elif o in ('-l', '--log'):
                logfile = a
            elif o in ('-v', '--verbose'):
                verbose += 1
        # check arguments
        if len(args) != 1:
            print >>sys.stderr, 'Error: 1 argument required\n'
            print >>sys.stderr, usage
            return 2
        logger = ApplicationLogger(verbose, logfile)
        return LiveLog(args[0])

    if __name__ == "__main__":
        logger = logging.getLogger('pywws')
        try:
            sys.exit(main())
        except KeyboardInterrupt:
            pass
        except Exception, e:
            logger.exception(str(e))

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