from json import loads
from datetime import datetime
from pytz import utc
from makeline import make_line, scale
from re import compile
from sys import argv

log_path = '/dev/null'

def get_lines(start):
    lines = ''
    find_stop = compile(r'x2="([0-9.]+)"')
    with open(log_path+'events.log', 'r') as fin:
        for l in fin:
            evstop = float(find_stop.search(l).group(1))

            if evstop > start:
                break
        lines += l
        lines += fin.read()

    with open(log_path+'current-state.json', 'r') as fin:
        lines += make_line(loads(fin.read()))

    return lines


def make_html(name, period, display_scale = 144): # display_scale = 1 pixel per 10 minutes
    stop = scale*datetime.now().timestamp()
    start = stop-period
    day_start = scale*datetime.fromtimestamp(start/scale).replace(hour=0,minute=0,second=0,microsecond=0,tzinfo=utc).timestamp()
    lines = get_lines(start)

    with open('template.html', 'r') as fin:
        with open(log_path+name+'.html', 'w') as fout:
            fout.write(fin.read().format(
                width = display_scale*period,
                start = start,
                period = period,
                day_start = day_start,
                day_stop = stop,
                events = lines
            ))


def make_htmls():
    make_html('hour', 1/24, 24*60*4) # 4 pixels per minute
    make_html('day', 1, 24*60) # 1 pixel per minute
    make_html('month', 31)
    make_html('4months', 120)
    make_html('18months', 365.256*1.5, 24) # 1 pixel per hour


if __name__ == "__main__":
    if len(argv) > 1:
        log_path = argv[1]+'/'
        make_htmls()
    else:
        print('error: specify target path')