"""Displays count of running libvirt VMs.
Required the following python packages:
        * libvirt
"""

import sys
import libvirt

import core.module
import core.widget
import core.input
import core.decorators

class Module(core.module.Module):
    @core.decorators.every(seconds=10)
    def __init__(self, config, theme):
        super().__init__(config, theme, core.widget.Widget(self.status))

        core.input.register(self, button=core.input.LEFT_MOUSE,
            cmd='virt-manager')

    def status(self, _):
        conn = libvirt.openReadOnly(None)
        if conn == None:
            return 'Failed to open connection to the hypervisor'
        return 'VMs %s' % (conn.numOfDomains())

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