import json
import os
import subprocess

config = json.load(open(os.environ['FLEES_CONFIG'],'rt'))

TZ = "Etc/UTC"
if 'timezone' in config:
    TZ = config['timezone']
    assert os.path.exists('/usr/share/zoneinfo/' + TZ), "Invalid timezone '%s'. See /usr/share/zoneinfo/*"%( TZ, )

    with open('/etc/timezone', 'wt') as fp:
        fp.write(TZ)
        fp.close()
    if os.path.exists('/etc/localtime'):
        os.remove('/etc/localtime')
    os.symlink(
        '/usr/share/zoneinfo/' + TZ,
        '/etc/localtime'
    )

env = os.environ.copy()
env['TZ'] = TZ

subprocess.call(
    [
        'gunicorn',
        '-b','0.0.0.0:80',
        '--timeout',str(config['timeout']),
        '-w',str(config['workers']),
        'app:app'
    ],
    env = env
)