# -*- coding: utf-8 -*-

"""
Copyright(C) 2010  Romain Bignon

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, version 3 of the License.

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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

"""

import sched
import time

from weboob.modules import ModulesLoader

class Weboob:
    def __init__(self, app_name):
        self.app_name = app_name
        self.backends = {}
        self.scheduler = sched.scheduler(time.time, time.sleep)
        self.modules_loader = ModulesLoader()
        self.modules_loader.load()

    def load_modules(self, caps=None, name=None, backends=None):
        if backends is None:
            for name, module in self.modules_loader.modules.iteritems():
                if (not caps or module.has_caps(caps)) and \
                   (not name or module.name == name):
                    backend = module.create_backend(self)
                    self.backends[module.name] = backend
        else:
            for key, backendcfg in backends.iteritems():
                try:
                    module = self.modules_loader[backendcfg.type]
                except KeyError:
                    continue
                if (caps and not module.has_caps(caps)) or \
                   (name and module.name != name):
                    continue
                self.backends[backendcfg.name] = module.create_backend(self, backendcfg)

    def load_module(self, modname, instname):
        module = self.modules_loader[modname]
        self.backends[instname] = module.create_backend(self)

    def iter_backends(self, caps=None):
        for name, backend in self.backends.iteritems():
            if caps is None or backend.has_caps(caps):
                yield (name, backend)

    def schedule(self, interval, function, *args):
        self.scheduler.enter(interval, 1, function, args)

    def loop(self):
        self.scheduler.run()