from json import loads, dumps

with open('all-time.txt', 'r') as fin:
	(last_t, last_ev, last_evt, last_ps) = (0, 'error', 0, [])

	with open('events.json', 'w') as fout:
		cur_t = 0
		cur_ps = []

		for line in fin:
			current = loads(line)
			cur_t = current['time']
			cur_ps = current['players']

			if last_t == 0:
				(last_t, last_ev, last_evt, last_ps) = (cur_t, 'online', cur_t, cur_ps)
			else:
				if cur_t - last_t > 70:
					if last_ev == 'online':
						fout.write(dumps({'period': [last_evt, last_t], 'status': last_ev, 'players': last_ps})+'\n')
						(last_ev, last_evt, last_ps) = ('unreachable', last_t, cur_ps)
				else:
					if last_ev != 'online':
						fout.write(dumps({'period': [last_evt, last_t], 'status': last_ev})+'\n')
						(last_ev, last_evt, last_ps) = ('online', last_t, last_ps)

					if last_ps != cur_ps:
						fout.write(dumps({'period': [last_evt, cur_t], 'status': last_ev, 'players': last_ps})+'\n')
						(last_ev, last_evt, last_ps) = ('online', cur_t, cur_ps)

				last_t = cur_t

	with open('current-state.json', 'w') as fout:
		fout.write(dumps({'period': [last_evt, last_t], 'status': 'online', 'players': last_ps}))




# scale down coordinates to dx=1 per day to prevent SVG coordinate overflows
scale = 1/60/60/24

def get_date(dtime):
    return datetime.fromtimestamp(dtime).strftime('%Y-%m-%d %H:%M')

def make_line(event):
    evstart = event['period'][0]
    evstop = event['period'][1]
    return '<line{type} x1="{start}" x2="{stop}" y1="{height}" y2="{height}"><title>{text} ({start_date} — {stop_date})</title></line>'.format(
        type = '' if event['status'] == 'online' else ' class="error"',
        start = scale*evstart,
        stop = scale*evstop,
        start_date = get_date(evstart),
        stop_date = get_date(evstop),
        height = len(event['players']) if 'players' in event else 0,
        text = ('no one' if len(event['players']) == 0 else ', '.join(event['players'])) if event['status'] == 'online' else event['status']
    )

def events_to_lines():
    with open('events.json', 'r') as fin:
        with open('events.log', 'w') as fout:
            for l in fin:
                fout.write(make_line(loads(l))+'\n')