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"""
This plugin allows you to ping an entity.

Installation
------------
You only have to load the plugin.

.. code-block:: none

    /load ping

Command
-------

.. glossary::

    /ping
        **Usage (globally):** ``/ping <jid>``

        **Usage (in a MUC tab):** ``/ping <jid or nick>``

        **Usage (in a conversation tab):** ``/ping [jid]``

        Globally, you can do ``/ping jid@example.com`` to get a ping.

        In a MUC, you can either do it to a JID or a nick (``/ping nick`` or ``/ping
        jid@example.com``).

        In a private or a direct conversation, you can do ``/ping`` to ping
        the current interlocutor.
"""

from plugin import BasePlugin
from roster import roster
from common import safeJID
import common
import tabs
import time


class Plugin(BasePlugin):
    def init(self):
        self.core.xmpp.register_plugin('xep_0199')
        self.core.xmpp.plugin['xep_0115'].update_caps()
        self.api.add_command('ping', self.command_ping,
                usage='<jid>',
                help='Send an XMPP ping to jid (see XEP-0199).',
                short='Send a ping',
                completion=self.completion_ping)
        self.api.add_tab_command(tabs.MucTab, 'ping', self.command_muc_ping,
                usage='<jid|nick>',
                help='Send an XMPP ping to jid or nick (see XEP-0199).',
                short='Send a ping.',
                completion=self.completion_muc_ping)
        for _class in (tabs.PrivateTab, tabs.ConversationTab):
            self.api.add_tab_command(_class, 'ping', self.command_private_ping,
                    usage='[jid]',
                    help='Send an XMPP ping to the current interlocutor or the given JID.',
                    short='Send a ping',
                    completion=self.completion_ping)

    def command_ping(self, arg):
        if not arg:
            return self.core.command_help('ping')
        jid = safeJID(arg)
        start = time.time()
        def callback(iq):
            delay = time.time() - start
            if iq['type'] == 'error' and iq['error']['condition'] in ('remote-server-timeout', 'remote-server-not-found'):
                self.api.information('%s did not respond to ping' % jid, 'Info')
            else:
                self.api.information('%s responded to ping after %s s' % (jid, round(delay, 4)), 'Info')

        self.core.xmpp.plugin['xep_0199'].send_ping(jid=jid, callback=callback)

    def completion_muc_ping(self, the_input):
        users = [user.nick for user in self.api.current_tab().users]
        l = [contact.bare_jid for contact in roster.get_contacts()]
        users.extend(l)
        return the_input.auto_completion(users, '', quotify=False)

    def command_private_ping(self, arg):
        if arg:
            return self.command_ping(arg)
        self.command_ping(self.api.current_tab().get_name())

    def command_muc_ping(self, arg):
        if not arg.strip():
            return
        user = self.api.current_tab().get_user_by_name(arg)
        if user:
            jid = safeJID(self.api.current_tab().get_name())
            jid.resource = user.nick
        else:
            jid = safeJID(arg)
        self.command_ping(jid.full)

    def completion_ping(self, the_input):
        l = [contact.bare_jid for contact in roster.get_contacts()]
        return the_input.auto_completion(l, '', quotify=False)