# This file is part of Gajim.
#
# Gajim 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 only.
#
# Gajim 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 Gajim. If not, see <http://www.gnu.org/licenses/>.

from gi.repository import Gdk
from gi.repository import Gtk
from gi.repository import GLib
from gi.repository import GObject

from gajim.common import app
from gajim.common import ged
from gajim.gtk import ErrorDialog
from gajim.gtk.util import get_builder


class PrivacyListWindow:
    def __init__(self, account, privacy_list_name, action):
        '''action is 'EDIT' or 'NEW' depending on if we create a new priv list
        or edit an already existing one'''
        self.account = account
        self.privacy_list_name = privacy_list_name

        # Dicts and Default Values
        self.active_rule = ''
        self.global_rules = {}
        self.list_of_groups = {}

        self.max_order = 0

        # Default Edit Values
        self.edit_rule_type = 'jid'
        self.allow_deny = 'allow'

        # Connect to gtk builder
        self.xml = get_builder('privacy_list_window.ui')
        self.window = self.xml.get_object('privacy_list_edit_window')

        # Add Widgets

        for widget_to_add in ('title_hbox', 'privacy_lists_title_label',
        'list_of_rules_label', 'add_edit_rule_label', 'delete_open_buttons_hbox',
        'privacy_list_active_checkbutton', 'privacy_list_default_checkbutton',
        'list_of_rules_combobox', 'delete_open_buttons_hbox',
        'delete_rule_button', 'open_rule_button', 'edit_allow_radiobutton',
        'edit_deny_radiobutton', 'edit_type_jabberid_radiobutton',
        'edit_type_jabberid_entry', 'edit_type_group_radiobutton',
        'edit_type_group_combobox', 'edit_type_subscription_radiobutton',
        'edit_type_subscription_combobox', 'edit_type_select_all_radiobutton',
        'edit_queries_send_checkbutton', 'edit_send_messages_checkbutton',
        'edit_view_status_checkbutton', 'edit_all_checkbutton',
        'edit_order_spinbutton', 'new_rule_button', 'save_rule_button',
        'privacy_list_refresh_button', 'privacy_list_close_button',
        'edit_send_status_checkbutton', 'add_edit_vbox',
        'privacy_list_active_checkbutton', 'privacy_list_default_checkbutton'):
            self.__dict__[widget_to_add] = self.xml.get_object(widget_to_add)

        self.privacy_lists_title_label.set_label(
            _('Privacy List <b><i>%s</i></b>') %
            GLib.markup_escape_text(self.privacy_list_name))

        if len(app.connections) > 1:
            title = _('Privacy List for %s') % self.account
        else:
            title = _('Privacy List')

        self.delete_rule_button.set_sensitive(False)
        self.open_rule_button.set_sensitive(False)
        self.privacy_list_active_checkbutton.set_sensitive(False)
        self.privacy_list_default_checkbutton.set_sensitive(False)
        self.list_of_rules_combobox.set_sensitive(False)

        # set jabber id completion
        jids_list_store = Gtk.ListStore(GObject.TYPE_STRING)
        for jid in app.contacts.get_jid_list(self.account):
            jids_list_store.append([jid])
        jid_entry_completion = Gtk.EntryCompletion()
        jid_entry_completion.set_text_column(0)
        jid_entry_completion.set_model(jids_list_store)
        jid_entry_completion.set_popup_completion(True)
        self.edit_type_jabberid_entry.set_completion(jid_entry_completion)
        if action == 'EDIT':
            self.refresh_rules()

        model = self.edit_type_group_combobox.get_model()
        count = 0
        for group in app.groups[self.account]:
            self.list_of_groups[group] = count
            count += 1
            model.append([group])
        self.edit_type_group_combobox.set_active(0)

        self.window.set_title(title)

        app.ged.register_event_handler('privacy-list-received', ged.GUI1,
                                       self._nec_privacy_list_received)
        app.ged.register_event_handler('privacy-lists-received', ged.GUI1,
                                       self._nec_privacy_lists_received)

        self.window.show_all()
        self.add_edit_vbox.hide()

        self.xml.connect_signals(self)

    def on_key_press_event(self, widget, event):
        if event.keyval == Gdk.KEY_Escape:
            self.window.destroy()

    def on_privacy_list_edit_window_destroy(self, widget):
        key_name = 'privacy_list_%s' % self.privacy_list_name
        if key_name in app.interface.instances[self.account]:
            del app.interface.instances[self.account][key_name]
        app.ged.remove_event_handler('privacy-list-received', ged.GUI1,
                                     self._nec_privacy_list_received)
        app.ged.remove_event_handler('privacy-lists-received', ged.GUI1,
                                     self._nec_privacy_lists_received)

    def _nec_privacy_lists_received(self, obj):
        if obj.conn.name != self.account:
            return
        if obj.active_list == self.privacy_list_name:
            self.privacy_list_active_checkbutton.set_active(True)
        else:
            self.privacy_list_active_checkbutton.set_active(False)
        if obj.default_list == self.privacy_list_name:
            self.privacy_list_default_checkbutton.set_active(True)
        else:
            self.privacy_list_default_checkbutton.set_active(False)

    def privacy_list_received(self, rules):
        model = self.list_of_rules_combobox.get_model()
        model.clear()
        self.global_rules = {}
        for rule in rules:
            if 'type' in rule:
                text_item = _('Order: %(order)s, action: %(action)s, type: %(type)s'
                        ', value: %(value)s') % {'order': rule['order'],
                        'action': rule['action'], 'type': rule['type'],
                        'value': rule['value']}
            else:
                text_item = _('Order: %(order)s, action: %(action)s') % \
                        {'order': rule['order'], 'action': rule['action']}
            if int(rule['order']) > self.max_order:
                self.max_order = int(rule['order'])
            self.global_rules[text_item] = rule
            model.append([text_item])
        if len(rules) == 0:
            self.title_hbox.set_sensitive(False)
            self.list_of_rules_combobox.set_sensitive(False)
            self.delete_rule_button.set_sensitive(False)
            self.open_rule_button.set_sensitive(False)
            self.privacy_list_active_checkbutton.set_sensitive(False)
            self.privacy_list_default_checkbutton.set_sensitive(False)
        else:
            self.list_of_rules_combobox.set_active(0)
            self.title_hbox.set_sensitive(True)
            self.list_of_rules_combobox.set_sensitive(True)
            self.delete_rule_button.set_sensitive(True)
            self.open_rule_button.set_sensitive(True)
            self.privacy_list_active_checkbutton.set_sensitive(True)
            self.privacy_list_default_checkbutton.set_sensitive(True)
        self.reset_fields()
        con = app.connections[self.account]
        con.get_module('PrivacyLists').get_privacy_lists()

    def _nec_privacy_list_received(self, obj):
        if obj.conn.name != self.account:
            return
        if obj.list_name != self.privacy_list_name:
            return
        self.privacy_list_received(obj.rules)

    def refresh_rules(self):
        con = app.connections[self.account]
        con.get_module('PrivacyLists').get_privacy_list(self.privacy_list_name)

    def on_delete_rule_button_clicked(self, widget):
        model = self.list_of_rules_combobox.get_model()
        iter_ = self.list_of_rules_combobox.get_active_iter()
        _rule = model[iter_][0]
        tags = []
        for rule in self.global_rules:
            if rule != _rule:
                tags.append(self.global_rules[rule])
        con = app.connections[self.account]
        con.get_module('PrivacyLists').set_privacy_list(
            self.privacy_list_name, tags)
        self.privacy_list_received(tags)
        self.add_edit_vbox.hide()
        if not tags:  # we removed latest rule
            if 'privacy_lists' in app.interface.instances[self.account]:
                win = app.interface.instances[self.account]['privacy_lists']
                win.remove_privacy_list_from_combobox(self.privacy_list_name)
                win.draw_widgets()

    def on_open_rule_button_clicked(self, widget):
        self.add_edit_rule_label.set_label(_('<b>Edit a rule</b>'))
        active_num = self.list_of_rules_combobox.get_active()
        if active_num == -1:
            self.active_rule = ''
        else:
            model = self.list_of_rules_combobox.get_model()
            iter_ = self.list_of_rules_combobox.get_active_iter()
            self.active_rule = model[iter_][0]
        if self.active_rule != '':
            rule_info = self.global_rules[self.active_rule]
            self.edit_order_spinbutton.set_value(int(rule_info['order']))
            if 'type' in rule_info:
                if rule_info['type'] == 'jid':
                    self.edit_type_jabberid_radiobutton.set_active(True)
                    self.edit_type_jabberid_entry.set_text(rule_info['value'])
                elif rule_info['type'] == 'group':
                    self.edit_type_group_radiobutton.set_active(True)
                    if rule_info['value'] in self.list_of_groups:
                        self.edit_type_group_combobox.set_active(
                            self.list_of_groups[rule_info['value']])
                    else:
                        self.edit_type_group_combobox.set_active(0)
                elif rule_info['type'] == 'subscription':
                    self.edit_type_subscription_radiobutton.set_active(True)
                    sub_value = rule_info['value']
                    if sub_value == 'none':
                        self.edit_type_subscription_combobox.set_active(0)
                    elif sub_value == 'both':
                        self.edit_type_subscription_combobox.set_active(1)
                    elif sub_value == 'from':
                        self.edit_type_subscription_combobox.set_active(2)
                    elif sub_value == 'to':
                        self.edit_type_subscription_combobox.set_active(3)
                else:
                    self.edit_type_select_all_radiobutton.set_active(True)
            else:
                self.edit_type_select_all_radiobutton.set_active(True)
            self.edit_send_messages_checkbutton.set_active(False)
            self.edit_queries_send_checkbutton.set_active(False)
            self.edit_view_status_checkbutton.set_active(False)
            self.edit_send_status_checkbutton.set_active(False)
            self.edit_all_checkbutton.set_active(False)
            if not rule_info['child']:
                self.edit_all_checkbutton.set_active(True)
            else:
                if 'presence-out' in rule_info['child']:
                    self.edit_send_status_checkbutton.set_active(True)
                if 'presence-in' in rule_info['child']:
                    self.edit_view_status_checkbutton.set_active(True)
                if 'iq' in rule_info['child']:
                    self.edit_queries_send_checkbutton.set_active(True)
                if 'message' in rule_info['child']:
                    self.edit_send_messages_checkbutton.set_active(True)

            if rule_info['action'] == 'allow':
                self.edit_allow_radiobutton.set_active(True)
            else:
                self.edit_deny_radiobutton.set_active(True)
        self.add_edit_vbox.show()

    def on_edit_all_checkbutton_toggled(self, widget):
        if widget.get_active():
            self.edit_send_messages_checkbutton.set_active(True)
            self.edit_queries_send_checkbutton.set_active(True)
            self.edit_view_status_checkbutton.set_active(True)
            self.edit_send_status_checkbutton.set_active(True)
            self.edit_send_messages_checkbutton.set_sensitive(False)
            self.edit_queries_send_checkbutton.set_sensitive(False)
            self.edit_view_status_checkbutton.set_sensitive(False)
            self.edit_send_status_checkbutton.set_sensitive(False)
        else:
            self.edit_send_messages_checkbutton.set_active(False)
            self.edit_queries_send_checkbutton.set_active(False)
            self.edit_view_status_checkbutton.set_active(False)
            self.edit_send_status_checkbutton.set_active(False)
            self.edit_send_messages_checkbutton.set_sensitive(True)
            self.edit_queries_send_checkbutton.set_sensitive(True)
            self.edit_view_status_checkbutton.set_sensitive(True)
            self.edit_send_status_checkbutton.set_sensitive(True)

    def on_privacy_list_active_checkbutton_toggled(self, widget):
        name = None
        if widget.get_active():
            name = self.privacy_list_name

        con = app.connections[self.account]
        con.get_module('PrivacyLists').set_active_list(name)

    def on_privacy_list_default_checkbutton_toggled(self, widget):
        name = None
        if widget.get_active():
            name = self.privacy_list_name

        con = app.connections[self.account]
        con.get_module('PrivacyLists').set_default_list(name)

    def on_new_rule_button_clicked(self, widget):
        self.reset_fields()
        self.add_edit_vbox.show()

    def reset_fields(self):
        self.edit_type_jabberid_entry.set_text('')
        self.edit_allow_radiobutton.set_active(True)
        self.edit_type_jabberid_radiobutton.set_active(True)
        self.active_rule = ''
        self.edit_send_messages_checkbutton.set_active(False)
        self.edit_queries_send_checkbutton.set_active(False)
        self.edit_view_status_checkbutton.set_active(False)
        self.edit_send_status_checkbutton.set_active(False)
        self.edit_all_checkbutton.set_active(False)
        self.edit_order_spinbutton.set_value(self.max_order + 1)
        self.edit_type_group_combobox.set_active(0)
        self.edit_type_subscription_combobox.set_active(0)
        self.add_edit_rule_label.set_label(_('<b>Add a rule</b>'))

    def get_current_tags(self):
        if self.edit_type_jabberid_radiobutton.get_active():
            edit_type = 'jid'
            edit_value = self.edit_type_jabberid_entry.get_text()
        elif self.edit_type_group_radiobutton.get_active():
            edit_type = 'group'
            model = self.edit_type_group_combobox.get_model()
            iter_ = self.edit_type_group_combobox.get_active_iter()
            edit_value = model[iter_][0]
        elif self.edit_type_subscription_radiobutton.get_active():
            edit_type = 'subscription'
            subs = ['none', 'both', 'from', 'to']
            edit_value = subs[self.edit_type_subscription_combobox.get_active()]
        elif self.edit_type_select_all_radiobutton.get_active():
            edit_type = ''
            edit_value = ''
        edit_order = str(self.edit_order_spinbutton.get_value_as_int())
        if self.edit_allow_radiobutton.get_active():
            edit_deny = 'allow'
        else:
            edit_deny = 'deny'
        child = []
        if not self.edit_all_checkbutton.get_active():
            if self.edit_send_messages_checkbutton.get_active():
                child.append('message')
            if self.edit_queries_send_checkbutton.get_active():
                child.append('iq')
            if self.edit_send_status_checkbutton.get_active():
                child.append('presence-out')
            if self.edit_view_status_checkbutton.get_active():
                child.append('presence-in')
        if edit_type != '':
            return {'order': edit_order, 'action': edit_deny,
                    'type': edit_type, 'value': edit_value, 'child': child}
        return {'order': edit_order, 'action': edit_deny, 'child': child}

    def on_save_rule_button_clicked(self, widget):
        tags = []
        current_tags = self.get_current_tags()
        if int(current_tags['order']) > self.max_order:
            self.max_order = int(current_tags['order'])
        if self.active_rule == '':
            tags.append(current_tags)

        for rule in self.global_rules:
            if rule != self.active_rule:
                tags.append(self.global_rules[rule])
            else:
                tags.append(current_tags)

        con = app.connections[self.account]
        con.get_module('PrivacyLists').set_privacy_list(
            self.privacy_list_name, tags)
        self.refresh_rules()
        self.add_edit_vbox.hide()
        if 'privacy_lists' in app.interface.instances[self.account]:
            win = app.interface.instances[self.account]['privacy_lists']
            win.add_privacy_list_to_combobox(self.privacy_list_name)
            win.draw_widgets()

    def on_list_of_rules_combobox_changed(self, widget):
        self.add_edit_vbox.hide()

    def on_edit_type_radiobutton_changed(self, widget, radiobutton):
        active_bool = widget.get_active()
        if active_bool:
            self.edit_rule_type = radiobutton

    def on_edit_allow_radiobutton_changed(self, widget, radiobutton):
        active_bool = widget.get_active()
        if active_bool:
            self.allow_deny = radiobutton

    def on_close_button_clicked(self, widget):
        self.window.destroy()


class PrivacyListsWindow:
    """
    Window that is the main window for Privacy Lists; we can list there the
    privacy lists and ask to create a new one or edit an already there one
    """
    def __init__(self, account):
        self.account = account
        self.privacy_lists_save = []

        self.xml = get_builder('privacy_lists_window.ui')

        self.window = self.xml.get_object('privacy_lists_first_window')
        for widget_to_add in (
            'list_of_privacy_lists_combobox', 'delete_privacy_list_button',
            'open_privacy_list_button', 'new_privacy_list_button',
            'new_privacy_list_entry', 'privacy_lists_refresh_button',
                'close_privacy_lists_window_button'):
            self.__dict__[widget_to_add] = self.xml.get_object(widget_to_add)

        self.draw_privacy_lists_in_combobox([])
        self.privacy_lists_refresh()

        self.enabled = True

        if len(app.connections) > 1:
            title = _('Privacy Lists for %s') % self.account
        else:
            title = _('Privacy Lists')

        self.window.set_title(title)

        app.ged.register_event_handler('privacy-lists-received', ged.GUI1,
                                       self._nec_privacy_lists_received)
        app.ged.register_event_handler('privacy-list-removed', ged.GUI1,
                                       self._nec_privacy_lists_removed)

        self.window.show_all()

        self.xml.connect_signals(self)

    def on_key_press_event(self, widget, event):
        if event.keyval == Gdk.KEY_Escape:
            self.window.destroy()

    def on_privacy_lists_first_window_destroy(self, widget):
        if 'privacy_lists' in app.interface.instances[self.account]:
            del app.interface.instances[self.account]['privacy_lists']
        app.ged.remove_event_handler('privacy-lists-received', ged.GUI1,
                                     self._nec_privacy_lists_received)
        app.ged.remove_event_handler('privacy-list-removed', ged.GUI1,
                                     self._nec_privacy_lists_removed)

    def remove_privacy_list_from_combobox(self, privacy_list):
        if privacy_list not in self.privacy_lists_save:
            return

        model = self.list_of_privacy_lists_combobox.get_model()
        for entry in model:
            if entry[0] == privacy_list:
                model.remove(entry.iter)

        self.privacy_lists_save.remove(privacy_list)

    def add_privacy_list_to_combobox(self, privacy_list):
        if privacy_list in self.privacy_lists_save:
            return
        model = self.list_of_privacy_lists_combobox.get_model()
        model.append([privacy_list])
        self.privacy_lists_save.append(privacy_list)

    def draw_privacy_lists_in_combobox(self, privacy_lists):
        self.list_of_privacy_lists_combobox.set_active(-1)
        self.list_of_privacy_lists_combobox.get_model().clear()
        self.privacy_lists_save = []
        for add_item in privacy_lists:
            self.add_privacy_list_to_combobox(add_item)
        self.draw_widgets()

    def draw_widgets(self):
        if len(self.privacy_lists_save) == 0:
            self.list_of_privacy_lists_combobox.set_sensitive(False)
            self.open_privacy_list_button.set_sensitive(False)
            self.delete_privacy_list_button.set_sensitive(False)
        else:
            self.list_of_privacy_lists_combobox.set_sensitive(True)
            self.list_of_privacy_lists_combobox.set_active(0)
            self.open_privacy_list_button.set_sensitive(True)
            self.delete_privacy_list_button.set_sensitive(True)

    def on_close_button_clicked(self, widget):
        self.window.destroy()

    def on_delete_privacy_list_button_clicked(self, widget):
        active_list = self.privacy_lists_save[
            self.list_of_privacy_lists_combobox.get_active()]
        con = app.connections[self.account]
        con.get_module('PrivacyLists').del_privacy_list(active_list)

    def privacy_list_removed(self, active_list):
        self.privacy_lists_save.remove(active_list)
        self.privacy_lists_received(self.privacy_lists_save)

    def _nec_privacy_lists_removed(self, obj):
        if obj.conn.name != self.account:
            return
        self.privacy_list_removed(obj.list_name)

    def privacy_lists_received(self, lists):
        privacy_lists = []
        for privacy_list in lists:
            privacy_lists.append(privacy_list)
        self.draw_privacy_lists_in_combobox(privacy_lists)

    def _nec_privacy_lists_received(self, obj):
        if obj.conn.name != self.account:
            return
        self.privacy_lists_received(obj.lists)

    def privacy_lists_refresh(self):
        con = app.connections[self.account]
        con.get_module('PrivacyLists').get_privacy_lists()

    def on_new_privacy_list_button_clicked(self, widget):
        name = self.new_privacy_list_entry.get_text()
        if not name:
            ErrorDialog(
                _('Invalid List Name'),
                _('You must enter a name to create a privacy list.'),
                transient_for=self.window)
            return
        key_name = 'privacy_list_%s' % name
        if key_name in app.interface.instances[self.account]:
            app.interface.instances[self.account][key_name].window.present()
        else:
            app.interface.instances[self.account][key_name] = \
                PrivacyListWindow(self.account, name, 'NEW')
        self.new_privacy_list_entry.set_text('')

    def on_privacy_lists_refresh_button_clicked(self, widget):
        self.privacy_lists_refresh()

    def on_open_privacy_list_button_clicked(self, widget):
        name = self.privacy_lists_save[
            self.list_of_privacy_lists_combobox.get_active()]
        key_name = 'privacy_list_%s' % name
        if key_name in app.interface.instances[self.account]:
            app.interface.instances[self.account][key_name].window.present()
        else:
            app.interface.instances[self.account][key_name] = \
                PrivacyListWindow(self.account, name, 'EDIT')