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#!/usr/bin/python
#
# Copyright (C) 2013  Simo Sorce <simo@redhat.com>
#
# see file 'COPYING' for use and warranty information
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import sys
sys.stdout = sys.stderr
import glob
import os
import atexit
import cherrypy
from ipsilon.util.data import AdminStore
from ipsilon.util import page
from ipsilon.root import Root
from jinja2 import Environment, FileSystemLoader, ChoiceLoader
import ipsilon.util.sessions


def nuke_session_locks():
    if cherrypy.config['tools.sessions.on']:
        try:
            sessdir = cherrypy.config['tools.sessions.storage_path']
            for l in glob.glob(os.path.join(sessdir, '*.lock')):
                try:
                    os.remove(l)
                except Exception:  # pylint: disable=broad-except
                    pass
        except Exception:  # pylint: disable=broad-except
            pass

cfgfile = None
if (len(sys.argv) > 1):
    cfgfile = sys.argv[-1]
elif os.path.isfile('ipsilon.conf'):
    cfgfile = 'ipsilon.conf'
elif os.path.isfile('/etc/ipsilon/ipsilon.conf'):
    cfgfile = '/etc/ipsilon/ipsilon.conf'
else:
    raise IOError("Configuration file not found")

cherrypy.lib.sessions.SqlSession = ipsilon.util.sessions.SqlSession
cherrypy.config.update(cfgfile)

nuke_session_locks()

datastore = AdminStore()
admin_config = datastore.load_config()
for option in admin_config:
    cherrypy.config[option] = admin_config[option]

template_loaders = []
default_template_dir = 'templates'
template_dir = cherrypy.config.get('template_dir', default_template_dir)
if template_dir.startswith('/'):
    template_loaders.append(FileSystemLoader(template_dir))
else:
    template_loaders.append(FileSystemLoader(
        os.path.join(cherrypy.config['base.dir'],
                     template_dir)))
# Fall-back to the default templates
template_loaders.append(FileSystemLoader(
    os.path.join(cherrypy.config['base.dir'],
                 default_template_dir)))
template_env = Environment(loader=ChoiceLoader(template_loaders))

if __name__ == "__main__":
    conf = {'/': {'tools.staticdir.root': os.getcwd()},
            '/ui': {'tools.staticdir.on': True,
                    'tools.staticdir.dir': 'ui'}}
    cherrypy.quickstart(Root('default', template_env),
                        cherrypy.config['base.mount'], conf)

else:
    cherrypy.config['environment'] = 'embedded'

    if cherrypy.__version__.startswith('3.0') and cherrypy.engine.state == 0:
        cherrypy.engine.start(blocking=False)
        atexit.register(cherrypy.engine.stop)

    application = cherrypy.Application(Root('default', template_env),
                                       script_name=None, config=None)