#!/usr/bin/env python

import argparse
import datetime
import sys
import gpx_parser


def parse_args():
    '''Shell argument parser.'''
    parser = argparse.ArgumentParser()
    parser.add_argument('infolder', help='Specify the in folder.')
    return parser.parse_args()


def main():
    args = parse_args()
    tracks = gpx_parser.Tracks(args.infolder)
    for year in range(2017, 2019):
        year_distance = 0.0
        year_duration = 0
        for month in range(1, 13):
            if month == 12:
                max_day = (datetime.date(year + 1, 1, 1) - datetime.timedelta(days=1)).day
            else:
                max_day = (datetime.date(year, month + 1, 1) - datetime.timedelta(days=1)).day
            for day in range(1, max_day):
                date_tracks = tracks.get(year, month, day)
                date_date = datetime.datetime(year, month, day)
                date_dist = 0.0
                date_duration = 0
                for track in date_tracks:
                    date_dist += track.distance
                    year_distance += track.distance
                    date_duration += track.duration.total_seconds()
                    year_duration += track.duration.total_seconds()
                if date_dist > 0.0:
                    print date_date
                    print '     Distance: ' + str(round(date_dist / 1000, 2)) + ' km'
                    print '     Duration: ' + str(datetime.timedelta(seconds=int(round(date_duration, 0))))
                    print 'Average speed: ' + str(round(date_dist / date_duration * 3.6, 2)) + ' km/h'
                    print '=================='
        print year
        print '     Distance: ' + str(round(year_distance / 1000, 2)) + ' km'
        print '     Duration: ' + str(datetime.timedelta(seconds=int(round(year_duration, 0))))
        print 'Average speed: ' + str(round(year_distance / year_duration * 3.6, 2)) + ' km/h'
        print '=================='
    return 0

if __name__ == '__main__':
    sys.exit(main())