from functools import partial

from gi.repository import Gtk, Gio, GLib, Gdk

from gajim.common import app
from gajim.gtkgui_helpers import get_image_button
from gajim import gtkgui_helpers
from gajim import gui_menu_builder
from gajim.common import passwords
from gajim import dialogs
from gajim import config
from gajim.common import helpers
from gajim.common.connection import Connection
from gajim.common.zeroconf.connection_zeroconf import ConnectionZeroconf
from gajim.options_dialog import OptionsDialog, OptionsBox
from gajim.common.const import Option, OptionKind, OptionType


class AccountsWindow(Gtk.ApplicationWindow):
    def __init__(self):
        Gtk.ApplicationWindow.__init__(self)
        self.set_application(app.app)
        self.set_position(Gtk.WindowPosition.CENTER)
        self.set_show_menubar(False)
        self.set_name('AccountsWindow')
        self.set_size_request(500, -1)
        self.set_resizable(False)
        self.need_relogin = {}

        glade_objects = [
            'stack', 'box', 'actionbar', 'headerbar', 'back_button',
            'menu_button', 'account_page', 'account_list']
        self.builder = gtkgui_helpers.get_gtk_builder('accounts_window.ui')
        for obj in glade_objects:
            setattr(self, obj, self.builder.get_object(obj))

        self.set_titlebar(self.headerbar)

        menu = Gio.Menu()
        menu.append(_('Merge Accounts'), 'app.merge')
        menu.append(_('Use PGP Agent'), 'app.agent')
        self.menu_button.set_menu_model(menu)

        button = get_image_button('list-add-symbolic', _('Add'))
        button.set_action_name('app.add-account')
        self.actionbar.pack_start(button)

        accounts = app.config.get_per('accounts')
        accounts.sort()
        for account in accounts:
            self.need_relogin[account] = self.get_relogin_options(account)
            account_item = Account(account, self)
            self.account_list.add(account_item)
            account_item.set_activatable()

        self.add(self.box)
        self.builder.connect_signals(self)

        self.connect('destroy', self.on_destroy)
        self.connect('key-press-event', self.on_key_press)
        self.show_all()

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

    def on_destroy(self, *args):
        self.check_relogin()
        del app.interface.instances['accounts']

    def on_child_visible(self, stack, *args):
        page = stack.get_visible_child_name()
        if page is None:
            return
        if page == 'main':
            self.menu_button.show()
            self.back_button.hide()
            self.check_relogin()
        else:
            self.back_button.show()
            self.menu_button.hide()

    def on_back_button(self, *args):
        page = self.stack.get_visible_child_name()
        child = self.stack.get_visible_child()
        self.remove_all_pages()
        if page == 'account':
            child.toggle.set_active(False)
            self.stack.add_named(self.account_page, 'main')
            self.stack.set_visible_child_name('main')
            self.update_accounts()
        else:
            self.stack.add_named(child.parent, 'account')
            self.stack.set_visible_child_name('account')

    def update_accounts(self):
        for row in self.account_list.get_children():
            row.get_child().update()

    @staticmethod
    def on_row_activated(listbox, row):
        row.get_child().on_row_activated()

    def remove_all_pages(self):
        for page in self.stack.get_children():
            self.stack.remove(page)

    def set_page(self, page, name):
        self.remove_all_pages()
        self.stack.add_named(page, name)
        page.update()
        page.show_all()
        self.stack.set_visible_child(page)

    def update_proxy_list(self):
        page = self.stack.get_child_by_name('connection')
        if page is None:
            return
        page.listbox.get_option('proxy').update_values()

    def check_relogin(self):
        for account in self.need_relogin:
            options = self.get_relogin_options(account)
            active = app.config.get_per('accounts', account, 'active')
            if options != self.need_relogin[account]:
                self.need_relogin[account] = options
                if active:
                    self.relog(account)
                break

    def relog(self, account):
        if app.connections[account].connected == 0:
            return

        if account == app.ZEROCONF_ACC_NAME:
            app.connections[app.ZEROCONF_ACC_NAME].update_details()
            return

        def login(account, show_before, status_before):
            """
            Login with previous status
            """
            # first make sure connection is really closed,
            # 0.5 may not be enough
            app.connections[account].disconnect(True)
            app.interface.roster.send_status(
                account, show_before, status_before)

        def relog(account):
            show_before = app.SHOW_LIST[app.connections[account].connected]
            status_before = app.connections[account].status
            app.interface.roster.send_status(
                account, 'offline', _('Be right back.'))
            GLib.timeout_add(500, login, account, show_before, status_before)

        dialogs.YesNoDialog(
            _('Relogin now?'),
            _('If you want all the changes to apply instantly, '
              'you must relogin.'),
            transient_for=self,
            on_response_yes=lambda *args: relog(account))

    @staticmethod
    def get_relogin_options(account):
        if account == app.ZEROCONF_ACC_NAME:
            options = ['zeroconf_first_name', 'zeroconf_last_name',
                       'zeroconf_jabber_id', 'zeroconf_email', 'keyid']
        else:
            options = ['client_cert', 'proxy', 'resource',
                       'use_custom_host', 'custom_host', 'custom_port',
                       'keyid']

        values = []
        for option in options:
            values.append(app.config.get_per('accounts', account, option))
        return values

    def on_remove_account(self, button, account):
        if app.events.get_events(account):
            app.interface.raise_dialog('unread-events-on-remove-account')
            return

        if app.config.get_per('accounts', account, 'is_zeroconf'):
            # Should never happen as button is insensitive
            return

        win_opened = False
        if app.interface.msg_win_mgr.get_controls(acct=account):
            win_opened = True
        elif account in app.interface.instances:
            for key in app.interface.instances[account]:
                if (app.interface.instances[account][key] and
                        key != 'remove_account'):
                    win_opened = True
                    break

        # Detect if we have opened windows for this account

        def remove(account):
            if (account in app.interface.instances and
                    'remove_account' in app.interface.instances[account]):
                dialog = app.interface.instances[account]['remove_account']
                dialog.window.present()
            else:
                if account not in app.interface.instances:
                    app.interface.instances[account] = {}
                app.interface.instances[account]['remove_account'] = \
                    config.RemoveAccountWindow(account)
        if win_opened:
            dialogs.ConfirmationDialog(
                _('You have opened chat in account %s') % account,
                _('All chat and groupchat windows will be closed. '
                  'Do you want to continue?'),
                on_response_ok=(remove, account),
                transient_for=self)
        else:
            remove(account)

    def remove_account(self, account):
        for row in self.account_list.get_children():
            if row.get_child().account == account:
                self.account_list.remove(row)
                del self.need_relogin[account]
                break

    def add_account(self, account):
        account_item = Account(account, self)
        self.account_list.add(account_item)
        account_item.set_activatable()
        self.account_list.show_all()
        self.stack.show_all()
        self.need_relogin[account] = self.get_relogin_options(account)

    def select_account(self, account):
        for row in self.account_list.get_children():
            if row.get_child().account == account:
                self.account_list.select_row(row)
                self.account_list.emit('row-activated', row)
                break

    @staticmethod
    def enable_account(account):
        if account == app.ZEROCONF_ACC_NAME:
            app.connections[account] = ConnectionZeroconf(account)
        else:
            app.connections[account] = Connection(account)

        # update variables
        app.interface.instances[account] = {
            'infos': {}, 'disco': {}, 'gc_config': {}, 'search': {},
            'online_dialog': {}, 'sub_request': {}}
        app.interface.minimized_controls[account] = {}
        app.connections[account].connected = 0
        app.groups[account] = {}
        app.contacts.add_account(account)
        app.gc_connected[account] = {}
        app.automatic_rooms[account] = {}
        app.newly_added[account] = []
        app.to_be_removed[account] = []
        if account == app.ZEROCONF_ACC_NAME:
            app.nicks[account] = app.ZEROCONF_ACC_NAME
        else:
            app.nicks[account] = app.config.get_per(
                'accounts', account, 'name')
        app.block_signed_in_notifications[account] = True
        app.sleeper_state[account] = 'off'
        app.encrypted_chats[account] = []
        app.last_message_time[account] = {}
        app.status_before_autoaway[account] = ''
        app.transport_avatar[account] = {}
        app.gajim_optional_features[account] = []
        app.caps_hash[account] = ''
        helpers.update_optional_features(account)
        # refresh roster
        if len(app.connections) >= 2:
            # Do not merge accounts if only one exists
            app.interface.roster.regroup = app.config.get('mergeaccounts')
        else:
            app.interface.roster.regroup = False
        app.interface.roster.setup_and_draw_roster()
        gui_menu_builder.build_accounts_menu()

    @staticmethod
    def disable_account(account):
        app.interface.roster.close_all(account)
        if account == app.ZEROCONF_ACC_NAME:
            app.connections[account].disable_account()
        app.connections[account].cleanup()
        del app.connections[account]
        del app.interface.instances[account]
        del app.interface.minimized_controls[account]
        del app.nicks[account]
        del app.block_signed_in_notifications[account]
        del app.groups[account]
        app.contacts.remove_account(account)
        del app.gc_connected[account]
        del app.automatic_rooms[account]
        del app.to_be_removed[account]
        del app.newly_added[account]
        del app.sleeper_state[account]
        del app.encrypted_chats[account]
        del app.last_message_time[account]
        del app.status_before_autoaway[account]
        del app.transport_avatar[account]
        del app.gajim_optional_features[account]
        del app.caps_hash[account]
        if len(app.connections) >= 2:
            # Do not merge accounts if only one exists
            app.interface.roster.regroup = app.config.get('mergeaccounts')
        else:
            app.interface.roster.regroup = False
        app.interface.roster.setup_and_draw_roster()
        gui_menu_builder.build_accounts_menu()


class Account(Gtk.Box):
    def __init__(self, account, parent):
        Gtk.Box.__init__(self, orientation=Gtk.Orientation.HORIZONTAL,
                         spacing=12)
        self.account = account
        if account == app.ZEROCONF_ACC_NAME:
            self.options = ZeroConfPage(account)
        else:
            self.options = AccountPage(account)
        self.parent = parent

        switch = Gtk.Switch()
        switch.set_active(app.config.get_per('accounts', account, 'active'))
        switch.set_vexpand(False)
        switch.set_valign(Gtk.Align.CENTER)
        switch.set_halign(Gtk.Align.START)
        if account == app.ZEROCONF_ACC_NAME and not app.HAVE_ZEROCONF:
            switch.set_sensitive(False)
            switch.set_active(False)
        switch.connect('notify::active', self.on_switch, self.account)

        account_label = app.config.get_per('accounts', account, 'account_label')
        self.label = Gtk.Label(label=account_label or account)
        self.label.set_halign(Gtk.Align.START)
        self.label.set_hexpand(True)

        self.add(switch)
        self.add(self.label)

        if account != app.ZEROCONF_ACC_NAME:
            button = get_image_button('list-remove-symbolic', _('Remove'))
            button.connect('clicked', parent.on_remove_account, account)
            self.add(button)

    def set_activatable(self):
        if self.account == app.ZEROCONF_ACC_NAME:
            self.get_parent().set_activatable(app.HAVE_ZEROCONF)

    def on_switch(self, switch, param, account):
        old_state = app.config.get_per('accounts', account, 'active')
        state = switch.get_active()
        if old_state == state:
            return

        if (account in app.connections and
                app.connections[account].connected > 0):
            # connecting or connected
            app.interface.raise_dialog('connected-on-disable-account')
            switch.set_active(not state)
            return
        if state:
            self.parent.enable_account(account)
        else:
            self.parent.disable_account(account)
        app.config.set_per('accounts', account, 'active', state)

    def on_row_activated(self):
        self.options.update_states()
        self.parent.set_page(self.options, 'account')

    def update(self):
        account_label = app.config.get_per(
            'accounts', self.account, 'account_label')
        self.label.set_text(account_label or self.account)


class GenericOptionPage(Gtk.Box):
    def __init__(self, account, parent, options):
        Gtk.Box.__init__(self, orientation=Gtk.Orientation.VERTICAL, spacing=12)
        self.account = account
        self.parent = parent

        self.toggle = get_image_button('document-edit-symbolic',
                                       _('Rename account label'), toggle=True)
        self.toggle.connect('toggled', self.set_entry_text)

        self.entry = Gtk.Entry()
        self.entry.set_sensitive(False)
        self.entry.set_name('AccountNameEntry')
        self.set_entry_text(self.toggle, update=True)

        box = Gtk.Box()
        if isinstance(self, AccountPage):
            box.pack_start(self.toggle, False, True, 0)
        box.pack_start(self.entry, True, True, 0)

        self.listbox = OptionsBox(account)
        self.listbox.set_selection_mode(Gtk.SelectionMode.NONE)

        for option in options:
            self.listbox.add_option(option)
        self.listbox.update_states()

        self.pack_start(box, False, False, 0)
        self.pack_start(self.listbox, True, True, 0)

        self.listbox.connect('row-activated', self.on_row_activated)

    def update_states(self):
        self.listbox.update_states()

    def on_row_activated(self, listbox, row):
        self.toggle.set_active(False)
        row.get_child().on_row_activated()

    def set_entry_text(self, toggle, update=False):
        account_label = app.config.get_per(
            'accounts', self.account, 'account_label')
        if update:
            self.entry.set_text(account_label or self.account)
            return
        if toggle.get_active():
            self.entry.set_sensitive(True)
            self.entry.grab_focus()
        else:
            self.entry.set_sensitive(False)
            value = self.entry.get_text()
            if not value:
                value = account_label or self.account
            app.config.set_per('accounts', self.account,
                               'account_label', value or self.account)
            if app.config.get_per('accounts', self.account, 'active'):
                app.interface.roster.draw_account(self.account)
                gui_menu_builder.build_accounts_menu()

    def update(self):
        self.set_entry_text(self.toggle, update=True)

    def set_page(self, options, name):
        options.update_states()
        self.get_toplevel().set_page(options, name)


class AccountPage(GenericOptionPage):
    def __init__(self, account, parent=None):

        general = partial(
            self.set_page, GeneralPage(account, self), 'general')
        connection = partial(
            self.set_page, ConnectionPage(account, self), 'connection')

        options = [
            Option(OptionKind.LOGIN, _('Login'), OptionType.DIALOG,
                   props={'dialog': LoginDialog}),

            Option(OptionKind.ACTION, _('Profile'), OptionType.ACTION,
                   '-profile', props={'action_args': account}),

            Option(OptionKind.CALLBACK, _('General'),
                   name='general', props={'callback': general}),

            Option(OptionKind.CALLBACK, _('Connection'),
                   name='connection', props={'callback': connection}),

            Option(OptionKind.ACTION, _('Import Contacts'), OptionType.ACTION,
                   '-import-contacts', props={'action_args': account}),

            Option(OptionKind.DIALOG, _('Client Certificate'),
                   OptionType.DIALOG, props={'dialog': CertificateDialog}),

            Option(OptionKind.GPG, _('OpenPGP Key'), OptionType.DIALOG,
                   props={'dialog': None}),
            ]

        GenericOptionPage.__init__(self, account, parent, options)


class GeneralPage(GenericOptionPage):
    def __init__(self, account, parent=None):

        options = [
            Option(OptionKind.SWITCH, _('Connect on startup'),
                   OptionType.ACCOUNT_CONFIG, 'autoconnect'),

            Option(OptionKind.SWITCH, _('Reconnect when connection is lost'),
                   OptionType.ACCOUNT_CONFIG, 'autoreconnect'),

            Option(OptionKind.SWITCH, _('Save conversations for all contacts'),
                   OptionType.ACCOUNT_CONFIG, 'no_log_for',
                   desc=_('Store conversations on the harddrive')),

            Option(OptionKind.SWITCH, _('Server Message Archive'),
                   OptionType.ACCOUNT_CONFIG, 'sync_logs_with_server',
                   desc=_('Messages get stored on the server.\n'
                          'The archive is used to sync messages\n'
                          'between multiple devices.\n'
                          'XEP-0313')),

            Option(OptionKind.SWITCH, _('Global Status'),
                   OptionType.ACCOUNT_CONFIG, 'sync_with_global_status',
                   desc=_('Synchronise the status of all accounts')),

            Option(OptionKind.SWITCH, _('Message Carbons'),
                   OptionType.ACCOUNT_CONFIG, 'enable_message_carbons',
                   desc=_('All your other online devices get copies\n'
                          'of sent and received messages.\n'
                          'XEP-0280')),

            Option(OptionKind.SWITCH, _('Use file transfer proxies'),
                   OptionType.ACCOUNT_CONFIG, 'use_ft_proxies'),
            ]
        GenericOptionPage.__init__(self, account, parent, options)


class ConnectionPage(GenericOptionPage):
    def __init__(self, account, parent=None):

        options = [
            Option(OptionKind.SWITCH, 'HTTP_PROXY',
                   OptionType.ACCOUNT_CONFIG, 'use_env_http_proxy',
                   desc=_('Use environment variable')),

            Option(OptionKind.PROXY, _('Proxy'),
                   OptionType.ACCOUNT_CONFIG, 'proxy', name='proxy'),

            Option(OptionKind.SWITCH, _('Warn on insecure connection'),
                   OptionType.ACCOUNT_CONFIG,
                   'warn_when_insecure_ssl_connection'),

            Option(OptionKind.SWITCH, _('Send keep-alive packets'),
                   OptionType.ACCOUNT_CONFIG, 'keep_alives_enabled'),

            Option(OptionKind.HOSTNAME, _('Hostname'), OptionType.DIALOG,
                   desc=_('Manually set the hostname for the server'),
                   props={'dialog': CutstomHostnameDialog}),

            Option(OptionKind.ENTRY, _('Resource'),
                   OptionType.ACCOUNT_CONFIG, 'resource'),

            Option(OptionKind.PRIORITY, _('Priority'),
                   OptionType.DIALOG, props={'dialog': PriorityDialog}),
            ]

        GenericOptionPage.__init__(self, account, parent, options)


class ZeroConfPage(GenericOptionPage):
    def __init__(self, account, parent=None):

        options = [
            Option(OptionKind.DIALOG, _('Profile'),
                   OptionType.DIALOG, props={'dialog': ZeroconfProfileDialog}),

            Option(OptionKind.SWITCH, _('Connect on startup'),
                   OptionType.ACCOUNT_CONFIG, 'autoconnect',
                   desc=_('Use environment variable')),

            Option(OptionKind.SWITCH, _('Save conversations for all contacts'),
                   OptionType.ACCOUNT_CONFIG, 'no_log_for',
                   desc=_('Store conversations on the harddrive')),

            Option(OptionKind.SWITCH, _('Global Status'),
                   OptionType.ACCOUNT_CONFIG, 'sync_with_global_status',
                   desc=_('Synchronize the status of all accounts')),

            Option(OptionKind.GPG, _('OpenPGP Key'),
                   OptionType.DIALOG, props={'dialog': None}),
            ]

        GenericOptionPage.__init__(self, account, parent, options)


class ZeroconfProfileDialog(OptionsDialog):
    def __init__(self, account, parent):

        options = [
            Option(OptionKind.ENTRY, _('First Name'),
                   OptionType.ACCOUNT_CONFIG, 'zeroconf_first_name'),

            Option(OptionKind.ENTRY, _('Last Name'),
                   OptionType.ACCOUNT_CONFIG, 'zeroconf_last_name'),

            Option(OptionKind.ENTRY, _('Jabber ID'),
                   OptionType.ACCOUNT_CONFIG, 'zeroconf_jabber_id'),

            Option(OptionKind.ENTRY, _('Email'),
                   OptionType.ACCOUNT_CONFIG, 'zeroconf_email'),
            ]

        OptionsDialog.__init__(self, parent, _('Profile'),
                               Gtk.DialogFlags.MODAL, options, account)


class PriorityDialog(OptionsDialog):
    def __init__(self, account, parent):

        neg_priority = app.config.get('enable_negative_priority')
        if neg_priority:
            range_ = (-128, 127)
        else:
            range_ = (0, 127)

        options = [
            Option(OptionKind.SWITCH, _('Adjust to status'),
                   OptionType.ACCOUNT_CONFIG, 'adjust_priority_with_status',
                   'adjust'),

            Option(OptionKind.SPIN, _('Priority'),
                   OptionType.ACCOUNT_CONFIG, 'priority',
                   enabledif=('adjust', False), props={'range_': range_}),
            ]

        OptionsDialog.__init__(self, parent, _('Priority'),
                               Gtk.DialogFlags.MODAL, options, account)

        self.connect('destroy', self.on_destroy)

    def on_destroy(self, *args):
        # Update priority
        if self.account not in app.connections:
            return
        show = app.SHOW_LIST[app.connections[self.account].connected]
        status = app.connections[self.account].status
        app.connections[self.account].change_status(show, status)


class CutstomHostnameDialog(OptionsDialog):
    def __init__(self, account, parent):

        options = [
            Option(OptionKind.SWITCH, _('Enable'),
                   OptionType.ACCOUNT_CONFIG, 'use_custom_host', name='custom'),

            Option(OptionKind.ENTRY, _('Hostname'),
                   OptionType.ACCOUNT_CONFIG, 'custom_host',
                   enabledif=('custom', True)),

            Option(OptionKind.ENTRY, _('Port'),
                   OptionType.ACCOUNT_CONFIG, 'custom_port',
                   enabledif=('custom', True)),
            ]

        OptionsDialog.__init__(self, parent, _('Connection Options'),
                               Gtk.DialogFlags.MODAL, options, account)


class CertificateDialog(OptionsDialog):
    def __init__(self, account, parent):

        options = [
            Option(OptionKind.FILECHOOSER, _('Client Certificate'),
                   OptionType.ACCOUNT_CONFIG, 'client_cert',
                   props={'filefilter': (_('PKCS12 Files'), '*.p12')}),

            Option(OptionKind.SWITCH, _('Encrypted Certificate'),
                   OptionType.ACCOUNT_CONFIG, 'client_cert_encrypted'),
            ]

        OptionsDialog.__init__(self, parent, _('Certificate Options'),
                               Gtk.DialogFlags.MODAL, options, account)


class LoginDialog(OptionsDialog):
    def __init__(self, account, parent):

        options = [
            Option(OptionKind.ENTRY, _('Password'),
                   OptionType.ACCOUNT_CONFIG, 'password', name='password',
                   enabledif=('savepass', True)),

            Option(OptionKind.SWITCH, _('Save Password'),
                   OptionType.ACCOUNT_CONFIG, 'savepass', name='savepass'),

            Option(OptionKind.CHANGEPASSWORD, _('Change Password'),
                   OptionType.DIALOG, callback=self.on_password_change,
                   props={'dialog': None}),
            ]

        OptionsDialog.__init__(self, parent, _('Login Options'),
                               Gtk.DialogFlags.MODAL, options, account)

        self.connect('destroy', self.on_destroy)

    def on_password_change(self, new_password, data):
        passwords.save_password(self.account, new_password)

    def on_destroy(self, *args):
        savepass = app.config.get_per('accounts', self.account, 'savepass')
        if not savepass:
            passwords.save_password(self.account, '')
