# Copyright (c) 2013 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import os
import urlparse

import ap_spec
import netgear_single_band_configurator
from netgear_single_band_configurator import *


class Netgear2000APConfigurator(netgear_single_band_configurator.
                                NetgearSingleBandAPConfigurator):
    """Derived class to control Netgear WNR2000v3 router."""

    def _alert_handler(self, alert):
        """Checks for any modal dialogs which popup to alert the user and
        either raises a RuntimeError or ignores the alert.

        @param alert: The modal dialog's contents.
        """
        text = alert.text
        if 'The WEP security can only be supported on one SSID' in text:
            alert.accept()
        elif 'WPA-PSK [TKIP] only operates at "Up to 54Mbps"' in text:
            raise RuntimeError('Security and mode do not match:', text)
        elif '40 Mhz and 20 Mhz coexistence' in text:
            alert.accept()
        elif 'Are you sure that you do not want any wireless security' in text:
            alert.accept()
        elif 'WPS requires SSID broadcasting in order to work' in text:
            alert.accept()
        elif 'WPS is going to become inaccessible' in text:
            alert.accept()
        else:
            super(Netgear2000APConfigurator, self)._alert_handler(alert)


    def logout_from_previous_netgear(self):
        """Some netgear routers dislike you being logged into another
           one of their kind. So make sure that you are not."""
        self.click_button_by_id('yes', alert_handler=self._alert_handler)
        self.navigate_to_page(1)


    def navigate_to_page(self, page_number):
        """Navigates to the given page.

        @param page_number: the page to navigate to.
        """
        try:
            self.get_url(urlparse.urljoin(self.admin_interface_url,
                         'adv_index.htm'), page_title='WNR2000v3')
            self.click_button_by_id('setup_bt')
            self.wait_for_object_by_id('wireless')
            self.click_button_by_id('wireless')
        except Exception as e:
            if os.path.basename(self.driver.current_url) != 'adv_index.htm':
                raise RuntimeError('Invalid url %s' % self.driver.current_url)
            elif os.path.basename(
                 self.driver.current_url) == 'multi_login.html':
                self.logout_from_previous_netgear()
        setframe = self.driver.find_element_by_xpath(
                   '//iframe[@name="formframe"]')
        settings = self.driver.switch_to_frame(setframe)
        self.wait_for_object_by_xpath('//input[@name="ssid"]')


    def get_supported_modes(self):
        return [{'band': ap_spec.BAND_2GHZ,
                 'modes': [ap_spec.MODE_G, ap_spec.MODE_N]}]


    def set_mode(self, mode):
        # The mode popup changes based on the security mode.  Set to no
        # security to get the right popup.
        self.add_item_to_command_list(self._set_security_disabled, (), 1, 799)
        self.add_item_to_command_list(self._set_mode, (mode, ), 1, 800)


    def _set_mode(self, mode):
        if mode == ap_spec.MODE_G:
            mode = 'Up to 54 Mbps'
        elif mode == ap_spec.MODE_N:
            mode = 'Up to 150 Mbps'
        else:
            raise RuntimeError('Unsupported mode passed.')
        xpath = '//select[@name="opmode"]'
        self.select_item_from_popup_by_xpath(mode, xpath)


    def set_visibility(self, visible=True):
        self.add_item_to_command_list(self._set_visibility, (visible,), 1, 900)


    def _set_visibility(self, visible=True):
        xpath = '//input[@name="ssid_bc" and @type="checkbox"]'
        check_box = self.wait_for_object_by_xpath(xpath)
        # These check boxes behave different from other APs.
        value = check_box.is_selected()
        if (visible and not value) or (not visible and value):
            check_box.click()

        self.set_check_box_selected_by_xpath(xpath, selected=visible,
                                             wait_for_xpath=None,
                                             alert_handler=self._alert_handler)