# 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_WNDR_dual_band_configurator
from netgear_WNDR_dual_band_configurator import *


class Netgear4300APConfigurator(netgear_WNDR_dual_band_configurator.
                                NetgearDualBandAPConfigurator):
    """Derived class to control Netgear WNDR4300 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
        #  We ignore warnings that we get when we disable visibility or security
        #  changed to WEP, WPA Personal or WPA Enterprise.
        if 'The WEP security can only be supported on one SSID' in text:
            alert.accept()
        elif '40 Mhz and 20 Mhz coexistence' in text:
            alert.accept()
        elif 'WPS is going to become inaccessible' in text:
            alert.accept()
        elif 'Keys length should be 10 Hex' in text:
            alert.accept()
            raise RuntimeError('We got a dialog with Invalid Key Error. '
                               + text)
        else:
            super(Netgear4300APConfigurator, self)._alert_handler(alert)


    def get_supported_bands(self):
        return [{'band': ap_spec.BAND_2GHZ,
                 'channels': ['Auto', 1, 2, 3, 4, 5, 6, 7, 8, 9 , 10, 11]},
                {'band': ap_spec.BAND_5GHZ,
                 'channels': [36, 40, 44, 48, 149, 153, 157, 161]}]


    def get_supported_modes(self):
        return [{'band': ap_spec.BAND_5GHZ,
                 'modes': [ap_spec.MODE_A, ap_spec.MODE_N]},
                {'band': ap_spec.BAND_2GHZ,
                 'modes': [ap_spec.MODE_G, ap_spec.MODE_N]}]


    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')


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

        @param page_number: the page to navigate to.
        """
        self.set_wait_time(30)
        try:
            self.get_url(urlparse.urljoin(self.admin_interface_url,
                         'adv_index.htm'), page_title='WNDR4300')
            self.driver.execute_script("click_adv_action('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.wait_for_object_by_xpath('//iframe[@name="formframe"]')
        settings = self.driver.switch_to_frame(setframe)
        xpath = '//input[@name="security_type_an" and @value="WPA-ENTER"]'
        self.wait.until(lambda _:
                        self.wait_for_object_by_xpath(xpath).is_displayed())
        self.driver.execute_script('window.stop()')
        self.restore_default_wait_time()


    def save_page(self, page_number):
        """Saves the given page.

        @param page_number: the page to save.
        """
        # Router throws 3 different alerts when the settings are applied.
        try:
            self.click_button_by_xpath('//input[@name="Apply"]',
                                       alert_handler=self._alert_handler)
        except Exception, e1:
            try:
                self._check_for_alert_in_message(str(e1),
                        alert_handler=self._alert_handler)
            except Exception, e2:
                self._check_for_alert_in_message(str(e2),
                        alert_handler=self._alert_handler)


    def _set_mode(self, mode, band=None):
        if mode == ap_spec.MODE_G or mode == ap_spec.MODE_A:
            mode_selection = 'Up to 54 Mbps'
        elif mode == ap_spec.MODE_N:
            if self.current_band == ap_spec.BAND_2GHZ:
                mode_selection = 'Up to 300 Mbps'
            else:
                mode_selection = 'Up to 450 Mbps'
        else:
            raise RuntimeError('Unsupported mode passed.')
        xpath = '//select[@name="opmode"]'
        if self.current_band == ap_spec.BAND_5GHZ:
            xpath = '//select[@name="opmode_an"]'
        self.wait_for_object_by_xpath(xpath)
        self.select_item_from_popup_by_xpath(mode_selection, xpath)


    def set_channel(self, channel):
        self.add_item_to_command_list(self._set_channel, (channel,), 1, 900)


    def _set_channel(self, channel):
        position = self._get_channel_popup_position(channel)
        channel_choices = ['Auto', '01', '02', '03', '04', '05', '06', '07',
                           '08', '09', '10', '11']
        xpath = '//select[@name="w_channel"]'
        if self.current_band == ap_spec.BAND_5GHZ:
            xpath = '//select[@name="w_channel_an"]'
            channel_choices = ['36', '40', '44', '48', '149', '153',
                               '157', '161']
        self.select_item_from_popup_by_xpath(channel_choices[position], xpath)


    def set_security_wep(self, key_value, authentication):
        # The button name seems to differ in various Netgear routers
        self.add_item_to_command_list(self._set_security_wep,
                                      (key_value, authentication), 1, 900)


    def _set_security_wep(self, key_value, authentication):
        self.set_wait_time(30)
        xpath = ('//input[@name="security_type" and @value="WEP" and '
                 '@type="radio"]')
        text_field = '//input[@name="KEY1"]'
        if self.current_band == ap_spec.BAND_5GHZ:
            xpath = '//input[@name="security_type_an" and @value="WEP" and\
                     @type="radio"]'
            text_field = '//input[@name="KEY1_an"]'
        try:
            self.wait_for_object_by_xpath(xpath)
            self.click_button_by_xpath(xpath, alert_handler=self._alert_handler)
        except Exception, e:
            raise RuntimeError('We got an exception: "%s". Check the mode. '
                               'It should be \'Up to 54 Mbps\'.' % str(e))
        self.wait_for_object_by_xpath(text_field)
        self.set_content_of_text_field_by_xpath(key_value, text_field,
                                                abort_check=True)
        self.restore_default_wait_time()