# -*- 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.

"""

from logging import debug
from random import randint
from weboob.tools.browser import BrowserUnavailable

class ProfilesWalker(object):
    def __init__(self, sched, storage, browser):
        self.sched = sched
        self.storage = storage
        self.browser = browser

        self.visited_profiles = set(storage.get('profiles_walker', 'viewed'))
        self.profiles_queue = set()
        self.walk_cron = sched.repeat(60, self.walk)
        self.view_cron = sched.schedule(randint(10,40), self.view_profile)

    def save(self):
        self.storage.set('profiles_walker', 'viewed', self.visited_profiles)
        self.storage.save()

    def stop(self):
        self.event.cancel(self.event)
        self.event = None

    def walk(self):
        self.profiles_queue = self.profiles_queue.union(self.browser.search_profiles()).difference(self.visited_profiles)
        self.save()

    def view_profile(self):
        try:
            try:
                id = self.profiles_queue.pop()
            except KeyError:
                return # empty queue

            try:
                profile = self.browser.get_profile(id)
                debug(u'Visited %s (%s)' % (profile.get_name(), id))

                # Get score from the aum_score module
                # d = self.nucentral_core.callService(context.Context.fromComponent(self), 'aum_score', 'score', profile)
                # d.addCallback(self.score_cb, profile.getID())
                # deferredlist.append(d)

                # do not forget that we visited this profile, to avoid re-visiting it.
                self.visited_profiles.add(id)
                self.save()

            except BrowserUnavailable:
                # We consider this profil hasn't been [correctly] analysed
                self.profiles_queue.add(id)
                return
            except Exception, e:
                print e
        finally:
            self.sched.schedule(randint(10,40), self.view_profile)