#!/usr/bin/python

import urllib
import contextlib
import json
import time
import os

class SublabStatus(object):
    json = None
    def get_json(self):
        if self.json is not None:
            return self.json

        with contextlib.closing(urllib.urlopen('http://beaglebone.local.sublab.org/')) as response:
            self.json = json.load(response)
        return self.json

    def door_status(self):
        self.get_json()
        door_status = self.json['door.lock']

        if door_status['ts'] + 120 < time.time():
            return 'unknown'

        if not door_status['value']:
            return 'open'
        else:
            return 'closed'

if __name__ == '__main__':
    s = SublabStatus()
    if s.door_status() == 'open':
        colors = ('#0f0', '#222', 'status-open.png')
    elif s.door_status() == 'closed':
        colors = ('#222', '#f00', 'status-closed.png')
    else:
        colors = ('#222', '#222', 'status-unknown.png')

    css = '''
span.sublabopen {
    color: %s;
}

span.sublabclosed {
    color: %s;
}

#statusimage {
    background: url(../img/%s) ;
    height: 100px;
    width: 100px;
    position: absolute;
    right: 20px;
}


''' % colors

    path = os.path.realpath(os.path.dirname(__file__))
    path = os.path.join(path, '..', 'public', 'css', 'sublab.status.css')
    path_new = path + '.new'

    with open(path_new, 'w') as css_file:
        css_file.write(css)
    os.rename(path_new, path)