# Copyright 2010-2011 Florent Le Coz <louiz@louiz.org>
#
# This file is part of Poezio.
#
# Poezio is free software: you can redistribute it and/or modify
# it under the terms of the MIT license. See the COPYING file.

"""
Defines the Resource and Contact classes, which are used in
the roster
"""

import logging
log = logging.getLogger(__name__)

from sleekxmpp.xmlstream.stanzabase import JID

class Resource(object):
    """
    Defines a roster item.
    It's a precise resource.
    """
    def __init__(self, jid):
        self._jid = JID(jid)         # Full jid
        self._status = ''
        self._presence = 'unavailable'
        self._priority = 0

    def get_jid(self):
        return self._jid

    def __repr__(self):
        return '%s' % self._jid

    def set_priority(self, priority):
        assert isinstance(priority, int)
        self._priority = priority

    def get_priority(self):
        return self._priority

    def set_presence(self, pres):
        self._presence = pres

    def get_presence(self):
        return self._presence

    def get_status(self):
        return self._status

    def set_status(self, s):
        self._status = s

class Contact(object):
    """
    This a way to gather multiple resources from the same bare JID.
    This class contains zero or more Resource object and useful methods
    to get the resource with the highest priority, etc
    """
    def __init__(self, bare_jid):
        self._jid = bare_jid
        self._resources = []
        self._folded = True      # Folded by default
        self._display_name = None
        self._subscription = 'none'
        self._ask = None
        self._groups = []       # a list of groups the contact is in

    def get_bare_jid(self):
        """
        Just get the bare_jid or the contact
        """
        return self._jid

    def get_highest_priority_resource(self):
        """
        Return the resource with the highest priority
        """
        ret = None
        for resource in self._resources:
            if not ret or ret.get_priority() < resource.get_priority():
                ret = resource
        return ret

    def add_resource(self, resource):
        """
        Called, for example, when a new resource get offline
        (the first, or any subsequent one)
        """
        def f(o):
            return o.get_priority()
        self._resources.append(resource)
        self._resources = sorted(self._resources, key=f, reverse=True)

    def remove_resource(self, resource):
        """
        Called, for example, when one resource goes offline.
        """
        self._resources.remove(resource)

    def remove_resource_by_fulljid(self, fulljid):
        """
        Like 'remove_resource' but just by knowing the full jid
        """
        for resource in self._resources:
            if resource.get_jid().full == fulljid:
                self._resources.remove(resource)
                return
        assert False

    def get_resource_by_fulljid(self, fulljid):
        """
        Return the resource with the given fulljid
        """
        for resource in self._resources:
            if resource.get_jid().full == fulljid:
                return resource
        return None

    def toggle_folded(self):
        """
        Fold if it's unfolded, and vice versa
        """
        self._folded = not self._folded

    def set_name(self, name):
        self._display_name = name

    def get_name(self):
        return self._display_name

    def set_ask(self, ask):
        self._ask = ask

    def get_ask(self):
        return self._ask

    def set_subscription(self, sub):
        self._subscription = sub

    def get_subscription(self):
        return self._subscription

    def get_nb_resources(self):
        """
        Get the number of connected resources
        """
        return len(self._resources)

    def get_resources(self):
        """
        Return all resources, sorted by priority
        """
        compare_resources = lambda x: x.get_priority()
        return sorted(self._resources, key=compare_resources)

    def __repr__(self):
        ret = '<Contact: %s' % self._jid
        for resource in self._resources:
            ret += '\n\t\t%s' % resource
        return ret + ' />\n'