#
# This file is part of FreedomBox.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

import tempfile
from urllib.parse import urlparse

import requests

from . import application, config
from .interface import default_url, nav_to_module, submit
from .service import wait_for_page_update

config_page_title_language_map = {
    'da': 'Generel Konfiguration',
    'de': 'Allgemeine Konfiguration',
    'es': 'Configuración general',
    'fr': 'Configuration générale',
    'nb': 'Generelt oppsett',
    'nl': 'Algemene Instellingen',
    'pl': 'Ustawienia główne',
    'pt': 'Configuração Geral',
    'ru': 'Общие настройки',
    'sv': 'Allmän Konfiguration',
    'te': 'సాధారణ ఆకృతీకరణ',
    'tr': 'Genel Yapılandırma',
    'zh-hans': '常规配置',
}


def get_hostname(browser):
    nav_to_module(browser, 'config')
    return browser.find_by_id('id_hostname').value


def set_hostname(browser, hostname):
    nav_to_module(browser, 'config')
    browser.find_by_id('id_hostname').fill(hostname)
    submit(browser)


def get_domain_name(browser):
    nav_to_module(browser, 'config')
    return browser.find_by_id('id_domainname').value


def set_domain_name(browser, domain_name):
    nav_to_module(browser, 'config')
    browser.find_by_id('id_domainname').fill(domain_name)
    submit(browser)


def set_home_page(browser, home_page):
    if 'plinth' not in home_page and 'apache' not in home_page:
        home_page = 'shortcut-' + home_page

    nav_to_module(browser, 'config')
    drop_down = browser.find_by_id('id_homepage')
    drop_down.select(home_page)
    submit(browser)


def set_advanced_mode(browser, mode):
    nav_to_module(browser, 'config')
    advanced_mode = browser.find_by_id('id_advanced_mode')
    if mode:
        advanced_mode.check()
    else:
        advanced_mode.uncheck()

    submit(browser)


def set_language(browser, language_code):
    username = config['DEFAULT']['username']
    browser.visit(config['DEFAULT']['url'] +
                  '/plinth/sys/users/{}/edit/'.format(username))
    browser.find_by_xpath('//select[@id="id_language"]//option[@value="' +
                          language_code + '"]').first.click()
    submit(browser)


def check_language(browser, language_code):
    nav_to_module(browser, 'config')
    return browser.find_by_css('.header-bar').first.find_by_tag(
        'h2').first.value == config_page_title_language_map[language_code]


def delete_all_snapshots(browser):
    browser.visit(config['DEFAULT']['url'] + '/plinth/sys/snapshot/manage/')
    browser.find_by_id('select-all').check()

    submit(browser, browser.find_by_name('delete_selected'))
    confirm_button = browser.find_by_name('delete_confirm')
    if confirm_button:  # Only if redirected to confirm page
        submit(browser, confirm_button)


def create_snapshot(browser):
    browser.visit(config['DEFAULT']['url'] + '/plinth/sys/snapshot/manage/')
    submit(browser)  # Click on 'Create Snapshot'


def get_snapshot_count(browser):
    browser.visit(config['DEFAULT']['url'] + '/plinth/sys/snapshot/manage/')
    # Subtract 1 for table header
    return len(browser.find_by_xpath('//tr')) - 1


def snapshot_set_configuration(browser, free_space, timeline_enabled,
                               software_enabled, hourly, daily, weekly,
                               monthly, yearly):
    """Set the configuration for snapshots."""
    nav_to_module(browser, 'snapshot')
    browser.find_by_name('free_space').select(free_space / 100)
    browser.find_by_name('enable_timeline_snapshots').select(
        'yes' if timeline_enabled else 'no')
    browser.find_by_name('enable_software_snapshots').select(
        'yes' if software_enabled else 'no')
    browser.find_by_name('hourly_limit').fill(hourly)
    browser.find_by_name('daily_limit').fill(daily)
    browser.find_by_name('weekly_limit').fill(weekly)
    browser.find_by_name('monthly_limit').fill(monthly)
    browser.find_by_name('yearly_limit').fill(yearly)
    submit(browser)


def snapshot_get_configuration(browser):
    """Return the current configuration for snapshots."""
    nav_to_module(browser, 'snapshot')
    return (int(float(browser.find_by_name('free_space').value) * 100),
            browser.find_by_name('enable_timeline_snapshots').value == 'yes',
            browser.find_by_name('enable_software_snapshots').value == 'yes',
            int(browser.find_by_name('hourly_limit').value),
            int(browser.find_by_name('daily_limit').value),
            int(browser.find_by_name('weekly_limit').value),
            int(browser.find_by_name('monthly_limit').value),
            int(browser.find_by_name('yearly_limit').value))


def check_home_page_redirect(browser, app_name):
    browser.visit(config['DEFAULT']['url'])
    return browser.find_by_xpath(
        "//a[contains(@href, '/plinth/') and @title='FreedomBox']")


def dynamicdns_configure(browser):
    nav_to_module(browser, 'dynamicdns')
    browser.find_link_by_href(
        '/plinth/sys/dynamicdns/configure/').first.click()
    browser.find_by_id('id_enabled').check()
    browser.find_by_id('id_service_type').select('GnuDIP')
    browser.find_by_id('id_dynamicdns_server').fill('example.com')
    browser.find_by_id('id_dynamicdns_domain').fill('freedombox.example.com')
    browser.find_by_id('id_dynamicdns_user').fill('tester')
    browser.find_by_id('id_dynamicdns_secret').fill('testingtesting')
    browser.find_by_id('id_dynamicdns_ipurl').fill(
        'http://myip.datasystems24.de')
    submit(browser)


def dynamicdns_has_original_config(browser):
    nav_to_module(browser, 'dynamicdns')
    browser.find_link_by_href(
        '/plinth/sys/dynamicdns/configure/').first.click()
    enabled = browser.find_by_id('id_enabled').value
    service_type = browser.find_by_id('id_service_type').value
    server = browser.find_by_id('id_dynamicdns_server').value
    domain = browser.find_by_id('id_dynamicdns_domain').value
    user = browser.find_by_id('id_dynamicdns_user').value
    ipurl = browser.find_by_id('id_dynamicdns_ipurl').value
    if enabled and service_type == 'GnuDIP' and server == 'example.com' \
       and domain == 'freedombox.example.com' and user == 'tester' \
       and ipurl == 'http://myip.datasystems24.de':
        return True
    else:
        return False


def dynamicdns_change_config(browser):
    nav_to_module(browser, 'dynamicdns')
    browser.find_link_by_href(
        '/plinth/sys/dynamicdns/configure/').first.click()
    browser.find_by_id('id_enabled').check()
    browser.find_by_id('id_service_type').select('GnuDIP')
    browser.find_by_id('id_dynamicdns_server').fill('2.example.com')
    browser.find_by_id('id_dynamicdns_domain').fill('freedombox2.example.com')
    browser.find_by_id('id_dynamicdns_user').fill('tester2')
    browser.find_by_id('id_dynamicdns_secret').fill('testingtesting2')
    browser.find_by_id('id_dynamicdns_ipurl').fill(
        'http://myip2.datasystems24.de')
    submit(browser)


def backup_delete_root_archives(browser):
    """Delete all archives of the root borg repository"""
    browser.visit(default_url + '/plinth/sys/backups/')
    path = "//a[starts-with(@href,'/plinth/sys/backups/root/delete/')]"
    while browser.find_by_xpath(path):
        browser.find_by_xpath(path).first.click()
        with wait_for_page_update(browser,
                                  expected_url='/plinth/sys/backups/'):
            submit(browser)


def backup_create(browser, app_name):
    application.install(browser, 'backups')
    browser.find_link_by_href('/plinth/sys/backups/create/').first.click()
    for app in browser.find_by_css('input[type=checkbox]'):
        app.uncheck()

    # ensure the checkbox is scrolled into view
    browser.execute_script('window.scrollTo(0, 0)')
    browser.find_by_value(app_name).first.check()
    submit(browser)


def backup_restore(browser, app_name):
    nav_to_module(browser, 'backups')
    path = "//a[starts-with(@href,'/plinth/sys/backups/root/restore-archive/')]"
    # assume that want to restore the last (most recently created) backup
    browser.find_by_xpath(path).last.click()
    with wait_for_page_update(browser, expected_url='/plinth/sys/backups/'):
        submit(browser)


def backup_upload_and_restore(browser, app_name, downloaded_file_path):
    nav_to_module(browser, 'backups')
    browser.find_link_by_href('/plinth/sys/backups/upload/').first.click()
    fileinput = browser.driver.find_element_by_id('id_backups-file')
    fileinput.send_keys(downloaded_file_path)
    # submit upload form
    submit(browser)
    # submit restore form
    with wait_for_page_update(browser, expected_url='/plinth/sys/backups/'):
        submit(browser)


def download_latest_backup(browser):
    nav_to_module(browser, 'backups')
    path = "//a[starts-with(@href,'/plinth/sys/backups/root/download/')]"
    ele = browser.driver.find_elements_by_xpath(path)[0]
    url = ele.get_attribute('href')
    file_path = download_file_logged_in(browser, url, suffix='.tar.gz')
    return file_path


def download_file_logged_in(browser, url, suffix=''):
    """Download a file from Plinth, pretend being logged in via cookies"""
    if not url.startswith("http"):
        current_url = urlparse(browser.url)
        url = "%s://%s%s" % (current_url.scheme, current_url.netloc, url)
    cookies = browser.driver.get_cookies()
    cookies = {cookie["name"]: cookie["value"] for cookie in cookies}
    response = requests.get(url, verify=False, cookies=cookies)
    with tempfile.NamedTemporaryFile(delete=False, suffix=suffix) as temp_file:
        for chunk in response.iter_content(chunk_size=128):
            temp_file.write(chunk)
    return temp_file.name


def pagekite_is_enabled(browser):
    """Return whether pagekite is enabled."""
    nav_to_module(browser, 'pagekite')
    return browser.find_by_id('app-toggle-input').checked


def pagekite_configure(browser, host, port, kite_name, kite_secret):
    """Configure pagekite basic parameters."""
    nav_to_module(browser, 'pagekite')
    # time.sleep(0.250)  # Wait for 200ms show animation to complete
    browser.fill('pagekite-server_domain', host)
    browser.fill('pagekite-server_port', str(port))
    browser.fill('pagekite-kite_name', kite_name)
    browser.fill('pagekite-kite_secret', kite_secret)
    submit(browser)


def pagekite_get_configuration(browser):
    """Return pagekite basic parameters."""
    nav_to_module(browser, 'pagekite')
    return (browser.find_by_name('pagekite-server_domain').value,
            int(browser.find_by_name('pagekite-server_port').value),
            browser.find_by_name('pagekite-kite_name').value,
            browser.find_by_name('pagekite-kite_secret').value)


def bind_set_forwarders(browser, forwarders):
    """Set the forwarders list (space separated) in bind configuration."""
    nav_to_module(browser, 'bind')
    browser.fill('forwarders', forwarders)
    submit(browser, form_class='form-configuration')


def bind_get_forwarders(browser):
    """Return the forwarders list (space separated) in bind configuration."""
    nav_to_module(browser, 'bind')
    return browser.find_by_name('forwarders').first.value


def bind_enable_dnssec(browser, enable):
    """Enable/disable DNSSEC in bind configuration."""
    nav_to_module(browser, 'bind')
    if enable:
        browser.check('enable_dnssec')
    else:
        browser.uncheck('enable_dnssec')

    submit(browser, form_class='form-configuration')


def bind_get_dnssec(browser):
    """Return whether DNSSEC is enabled/disabled in bind configuration."""
    nav_to_module(browser, 'bind')
    return browser.find_by_name('enable_dnssec').first.checked


def security_enable_restricted_logins(browser, should_enable):
    """Enable/disable restricted logins in security module."""
    nav_to_module(browser, 'security')
    if should_enable:
        browser.check('security-restricted_access')
    else:
        browser.uncheck('security-restricted_access')

    submit(browser)


def security_get_restricted_logins(browser):
    """Return whether restricted console logins is enabled."""
    nav_to_module(browser, 'security')
    return browser.find_by_name('security-restricted_access').first.checked


def upgrades_enable_automatic(browser, should_enable):
    """Enable/disable automatic software upgrades."""
    nav_to_module(browser, 'upgrades')
    checkbox_element = browser.find_by_name('auto_upgrades_enabled').first
    if should_enable == checkbox_element.checked:
        return

    if should_enable:
        checkbox_element.check()
    else:
        checkbox_element.uncheck()

    submit(browser)


def upgrades_get_automatic(browser):
    """Return whether automatic software upgrades is enabled."""
    nav_to_module(browser, 'upgrades')
    return browser.find_by_name('auto_upgrades_enabled').first.checked


def _monkeysphere_find_domain(browser, key_type, domain_type, domain):
    """Iterate every domain of a given type which given key type."""
    keys_of_type = browser.find_by_css(
        '.monkeysphere-service-{}'.format(key_type))
    for key_of_type in keys_of_type:
        search_domains = key_of_type.find_by_css(
            '.monkeysphere-{}-domain'.format(domain_type))
        for search_domain in search_domains:
            if search_domain.text == domain:
                return key_of_type, search_domain

    raise IndexError('Domain not found')


def monkeysphere_import_key(browser, key_type, domain):
    """Import a key of specified type for given domain into monkeysphere."""
    try:
        monkeysphere_assert_imported_key(browser, key_type, domain)
    except IndexError:
        pass
    else:
        return

    key, _ = _monkeysphere_find_domain(browser, key_type, 'importable', domain)
    with wait_for_page_update(browser):
        key.find_by_css('.button-import').click()


def monkeysphere_assert_imported_key(browser, key_type, domain):
    """Assert that a key of specified type for given domain was imported.."""
    nav_to_module(browser, 'monkeysphere')
    return _monkeysphere_find_domain(browser, key_type, 'imported', domain)


def monkeysphere_publish_key(browser, key_type, domain):
    """Publish a key of specified type for given domain from monkeysphere."""
    nav_to_module(browser, 'monkeysphere')
    key, _ = _monkeysphere_find_domain(browser, key_type, 'imported', domain)
    with wait_for_page_update(browser):
        key.find_by_css('.button-publish').click()

    application.wait_for_config_update(browser, 'monkeysphere')


def open_main_page(browser):
    with wait_for_page_update(browser):
        browser.find_link_by_href('/plinth/').first.click()


def networks_set_firewall_zone(browser, zone):
    """"Set the network device firewall zone as internal or external."""
    nav_to_module(browser, 'networks')
    device = browser.find_by_xpath(
        '//span[contains(@class, "label-success") '
        'and contains(@class, "connection-status-label")]/following::a').first
    network_id = device['href'].split('/')[-3]
    device.click()
    edit_url = "/plinth/sys/networks/{}/edit/".format(network_id)
    browser.find_link_by_href(edit_url).first.click()
    browser.select('zone', zone)
    browser.find_by_tag("form").first.find_by_tag('input')[-1].click()