#!/usr/bin/env python3

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import gi

gi.require_version("Gtk", "3.0")
from gi.repository import Gtk

from zenmapGUI.higwidgets.higboxes import HIGVBox

import radialnet.gui.RadialNet as RadialNet
from radialnet.gui.ControlWidget import ControlWidget, ControlFisheye
from radialnet.gui.Toolbar import Toolbar
from radialnet.util.integration import make_graph_from_hosts


SLOW_LIMIT = 1000


class TopologyPage(HIGVBox):
    def __init__(self, inventory):
        HIGVBox.__init__(self)

        self.set_border_width(6)
        self.set_spacing(4)

        self.network_inventory = inventory

        self._create_widgets()
        self._pack_widgets()

    def _create_widgets(self):
        self.rn_hbox = Gtk.Box.new(Gtk.Orientation.HORIZONTAL, 4)
        self.rn_vbox = Gtk.Box.new(Gtk.Orientation.VERTICAL, 0)

        # RadialNet's widgets
        self.radialnet = RadialNet.RadialNet(RadialNet.LAYOUT_WEIGHTED)
        self.control = ControlWidget(self.radialnet)
        self.fisheye = ControlFisheye(self.radialnet)
        self.rn_toolbar = Toolbar(self.radialnet,
                               self,
                               self.control,
                               self.fisheye)

        self.display_panel = HIGVBox()

        self.radialnet.set_no_show_all(True)

        self.slow_vbox = HIGVBox()
        self.slow_label = Gtk.Label()
        self.slow_vbox.pack_start(self.slow_label, False, False, 0)
        show_button = Gtk.Button.new_with_label(_("Show the topology anyway"))
        show_button.connect("clicked", self.show_anyway)
        self.slow_vbox.pack_start(show_button, False, False, 0)
        self.slow_vbox.show_all()
        self.slow_vbox.set_no_show_all(True)
        self.slow_vbox.hide()

        self.radialnet.show()

    def _pack_widgets(self):
        self.rn_hbox.pack_start(self.display_panel, True, True, 0)
        self.rn_hbox.pack_start(self.control, False, True, 0)

        self.rn_vbox.pack_start(self.rn_hbox, True, True, 0)
        self.rn_vbox.pack_start(self.fisheye, False, True, 0)

        self.pack_start(self.rn_toolbar, False, False, 0)
        self.pack_start(self.rn_vbox, True, True, 0)

        self.display_panel.pack_start(self.slow_vbox, True, False, 0)
        self.display_panel.pack_start(self.radialnet, True, True, 0)

    def add_scan(self, scan):
        """Parses a given XML file and adds the parsed result to the network
        inventory."""
        self.network_inventory.add_scan(scan)
        self.update_radialnet()

    def update_radialnet(self):
        """Creates a graph from network inventory's host list and displays
        it."""
        hosts_up = self.network_inventory.get_hosts_up()

        self.slow_label.set_text(_("""\
Topology is disabled because too many hosts can cause it
to run slowly. The limit is %(limit)d hosts and there are %(num)d.\
""" % {'limit': SLOW_LIMIT, 'num': len(hosts_up)}))

        if len(hosts_up) <= SLOW_LIMIT:
            self.radialnet.show()
            self.slow_vbox.hide()
            self.update_radialnet_unchecked()
        else:
            self.radialnet.hide()
            self.slow_vbox.show()

    def update_radialnet_unchecked(self):
        hosts_up = self.network_inventory.get_hosts_up()
        graph = make_graph_from_hosts(hosts_up)
        self.radialnet.set_empty()
        self.radialnet.set_graph(graph)
        self.radialnet.show()

    def show_anyway(self, widget):
        self.radialnet.show()
        self.slow_vbox.hide()
        self.update_radialnet_unchecked()
