import * as React from 'react';
import { sprintf } from 'sprintf-js';
import { colors } from '../../config.json';
import { IDnsOptions } from '../../shared/daemon-rpc-types';
import { messages } from '../../shared/gettext';
import { formatMarkdown } from '../markdown-formatter';
import * as AppButton from './AppButton';
import { AriaDescription, AriaInput, AriaInputGroup, AriaLabel } from './AriaGroup';
import * as Cell from './cell';
import ImageView from './ImageView';
import { Layout } from './Layout';
import { ModalAlert, ModalAlertType, ModalContainer } from './Modal';
import {
  BackBarItem,
  NavigationBar,
  NavigationContainer,
  NavigationItems,
  NavigationScrollbars,
  TitleBarItem,
} from './NavigationBar';
import { StyledContainer, StyledContent, StyledSeparator } from './PreferencesStyles';
import SettingsHeader, { HeaderTitle } from './SettingsHeader';

export interface IProps {
  autoStart: boolean;
  autoConnect: boolean;
  allowLan: boolean;
  showBetaReleases: boolean;
  isBeta: boolean;
  enableSystemNotifications: boolean;
  monochromaticIcon: boolean;
  startMinimized: boolean;
  unpinnedWindow: boolean;
  dns: IDnsOptions;
  setAutoStart: (autoStart: boolean) => void;
  setEnableSystemNotifications: (flag: boolean) => void;
  setAutoConnect: (autoConnect: boolean) => void;
  setAllowLan: (allowLan: boolean) => void;
  setShowBetaReleases: (showBetaReleases: boolean) => void;
  setStartMinimized: (startMinimized: boolean) => void;
  setMonochromaticIcon: (monochromaticIcon: boolean) => void;
  setUnpinnedWindow: (unpinnedWindow: boolean) => void;
  setDnsOptions: (dns: IDnsOptions) => Promise<void>;
  onClose: () => void;
}

interface IState {
  showKillSwitchInfo: boolean;
}

export default class Preferences extends React.Component<IProps, IState> {
  public state = { showKillSwitchInfo: false };

  public render() {
    return (
      <ModalContainer>
        <Layout>
          <StyledContainer>
            <NavigationContainer>
              <NavigationBar>
                <NavigationItems>
                  <BackBarItem action={this.props.onClose}>
                    {
                      // TRANSLATORS: Back button in navigation bar
                      messages.pgettext('navigation-bar', 'Settings')
                    }
                  </BackBarItem>
                  <TitleBarItem>
                    {
                      // TRANSLATORS: Title label in navigation bar
                      messages.pgettext('preferences-nav', 'Preferences')
                    }
                  </TitleBarItem>
                </NavigationItems>
              </NavigationBar>

              <NavigationScrollbars>
                <SettingsHeader>
                  <HeaderTitle>{messages.pgettext('preferences-view', 'Preferences')}</HeaderTitle>
                </SettingsHeader>

                <StyledContent>
                  <Cell.CellButton onClick={this.showKillSwitchInfo}>
                    <Cell.InputLabel>
                      {messages.pgettext('preferences-view', 'Kill switch')}
                    </Cell.InputLabel>
                    <ImageView source="icon-info" width={24} tintColor={colors.white} />
                  </Cell.CellButton>
                  <StyledSeparator height={20} />

                  <AriaInputGroup>
                    <Cell.Container>
                      <AriaLabel>
                        <Cell.InputLabel>
                          {messages.pgettext('preferences-view', 'Launch app on start-up')}
                        </Cell.InputLabel>
                      </AriaLabel>
                      <AriaInput>
                        <Cell.Switch
                          isOn={this.props.autoStart}
                          onChange={this.props.setAutoStart}
                        />
                      </AriaInput>
                    </Cell.Container>
                  </AriaInputGroup>
                  <StyledSeparator />

                  <AriaInputGroup>
                    <Cell.Container>
                      <AriaLabel>
                        <Cell.InputLabel>
                          {messages.pgettext('preferences-view', 'Auto-connect')}
                        </Cell.InputLabel>
                      </AriaLabel>
                      <AriaInput>
                        <Cell.Switch
                          isOn={this.props.autoConnect}
                          onChange={this.props.setAutoConnect}
                        />
                      </AriaInput>
                    </Cell.Container>
                    <Cell.Footer>
                      <AriaDescription>
                        <Cell.FooterText>
                          {messages.pgettext(
                            'preferences-view',
                            'Automatically connect to a server when the app launches.',
                          )}
                        </Cell.FooterText>
                      </AriaDescription>
                    </Cell.Footer>
                  </AriaInputGroup>

                  <AriaInputGroup>
                    <Cell.Container disabled={this.props.dns.state === 'custom'}>
                      <AriaLabel>
                        <Cell.InputLabel>
                          {messages.pgettext('preferences-view', 'Block ads')}
                        </Cell.InputLabel>
                      </AriaLabel>
                      <AriaInput>
                        <Cell.Switch
                          isOn={
                            this.props.dns.state === 'default' &&
                            this.props.dns.defaultOptions.blockAds
                          }
                          onChange={this.setBlockAds}
                        />
                      </AriaInput>
                    </Cell.Container>
                  </AriaInputGroup>
                  <StyledSeparator />
                  <AriaInputGroup>
                    <Cell.Container disabled={this.props.dns.state === 'custom'}>
                      <AriaLabel>
                        <Cell.InputLabel>
                          {messages.pgettext('preferences-view', 'Block trackers')}
                        </Cell.InputLabel>
                      </AriaLabel>
                      <AriaInput>
                        <Cell.Switch
                          isOn={
                            this.props.dns.state === 'default' &&
                            this.props.dns.defaultOptions.blockTrackers
                          }
                          onChange={this.setBlockTrackers}
                        />
                      </AriaInput>
                    </Cell.Container>
                    {this.props.dns.state === 'custom' && <CustomDnsEnabledFooter />}
                  </AriaInputGroup>

                  {this.props.dns.state !== 'custom' && <StyledSeparator height={20} />}

                  <AriaInputGroup>
                    <Cell.Container>
                      <AriaLabel>
                        <Cell.InputLabel>
                          {messages.pgettext('preferences-view', 'Local network sharing')}
                        </Cell.InputLabel>
                      </AriaLabel>
                      <AriaInput>
                        <Cell.Switch isOn={this.props.allowLan} onChange={this.props.setAllowLan} />
                      </AriaInput>
                    </Cell.Container>
                    <Cell.Footer>
                      <AriaDescription>
                        <Cell.FooterText>
                          {messages.pgettext(
                            'preferences-view',
                            'Allows access to other devices on the same network for sharing, printing etc.',
                          )}
                        </Cell.FooterText>
                      </AriaDescription>
                    </Cell.Footer>
                  </AriaInputGroup>

                  <AriaInputGroup>
                    <Cell.Container>
                      <AriaLabel>
                        <Cell.InputLabel>
                          {messages.pgettext('preferences-view', 'Notifications')}
                        </Cell.InputLabel>
                      </AriaLabel>
                      <AriaInput>
                        <Cell.Switch
                          isOn={this.props.enableSystemNotifications}
                          onChange={this.props.setEnableSystemNotifications}
                        />
                      </AriaInput>
                    </Cell.Container>
                    <Cell.Footer>
                      <AriaDescription>
                        <Cell.FooterText>
                          {messages.pgettext(
                            'preferences-view',
                            'Enable or disable system notifications. The critical notifications will always be displayed.',
                          )}
                        </Cell.FooterText>
                      </AriaDescription>
                    </Cell.Footer>
                  </AriaInputGroup>

                  <AriaInputGroup>
                    <Cell.Container>
                      <AriaLabel>
                        <Cell.InputLabel>
                          {messages.pgettext('preferences-view', 'Monochromatic tray icon')}
                        </Cell.InputLabel>
                      </AriaLabel>
                      <AriaInput>
                        <Cell.Switch
                          isOn={this.props.monochromaticIcon}
                          onChange={this.props.setMonochromaticIcon}
                        />
                      </AriaInput>
                    </Cell.Container>
                    <Cell.Footer>
                      <AriaDescription>
                        <Cell.FooterText>
                          {messages.pgettext(
                            'preferences-view',
                            'Use a monochromatic tray icon instead of a colored one.',
                          )}
                        </Cell.FooterText>
                      </AriaDescription>
                    </Cell.Footer>
                  </AriaInputGroup>

                  {(window.env.platform === 'win32' ||
                    (window.env.platform === 'darwin' && window.env.development)) && (
                    <AriaInputGroup>
                      <Cell.Container>
                        <AriaLabel>
                          <Cell.InputLabel>
                            {messages.pgettext('preferences-view', 'Unpin app from taskbar')}
                          </Cell.InputLabel>
                        </AriaLabel>
                        <AriaInput>
                          <Cell.Switch
                            isOn={this.props.unpinnedWindow}
                            onChange={this.props.setUnpinnedWindow}
                          />
                        </AriaInput>
                      </Cell.Container>
                      <Cell.Footer>
                        <AriaDescription>
                          <Cell.FooterText>
                            {messages.pgettext(
                              'preferences-view',
                              'Enable to move the app around as a free-standing window.',
                            )}
                          </Cell.FooterText>
                        </AriaDescription>
                      </Cell.Footer>
                    </AriaInputGroup>
                  )}

                  {this.props.unpinnedWindow && (
                    <React.Fragment>
                      <AriaInputGroup>
                        <Cell.Container>
                          <AriaLabel>
                            <Cell.InputLabel>
                              {messages.pgettext('preferences-view', 'Start minimized')}
                            </Cell.InputLabel>
                          </AriaLabel>
                          <AriaInput>
                            <Cell.Switch
                              isOn={this.props.startMinimized}
                              onChange={this.props.setStartMinimized}
                            />
                          </AriaInput>
                        </Cell.Container>
                        <Cell.Footer>
                          <AriaDescription>
                            <Cell.FooterText>
                              {messages.pgettext(
                                'preferences-view',
                                'Show only the tray icon when the app starts.',
                              )}
                            </Cell.FooterText>
                          </AriaDescription>
                        </Cell.Footer>
                      </AriaInputGroup>
                    </React.Fragment>
                  )}

                  <AriaInputGroup>
                    <Cell.Container disabled={this.props.isBeta}>
                      <AriaLabel>
                        <Cell.InputLabel>
                          {messages.pgettext('preferences-view', 'Beta program')}
                        </Cell.InputLabel>
                      </AriaLabel>
                      <AriaInput>
                        <Cell.Switch
                          isOn={this.props.showBetaReleases}
                          onChange={this.props.setShowBetaReleases}
                        />
                      </AriaInput>
                    </Cell.Container>
                    <Cell.Footer>
                      <AriaDescription>
                        <Cell.FooterText>
                          {this.props.isBeta
                            ? messages.pgettext(
                                'preferences-view',
                                'This option is unavailable while using a beta version.',
                              )
                            : messages.pgettext(
                                'preferences-view',
                                'Enable to get notified when new beta versions of the app are released.',
                              )}
                        </Cell.FooterText>
                      </AriaDescription>
                    </Cell.Footer>
                  </AriaInputGroup>
                </StyledContent>
              </NavigationScrollbars>
            </NavigationContainer>
          </StyledContainer>
        </Layout>

        {this.state.showKillSwitchInfo && (
          <ModalAlert
            message={messages.pgettext(
              'preferences-view',
              'The app has a built in kill switch that is enabled by default and cannot be disabled. This is to prevent your traffic from leaking outside of the VPN tunnel if your network suddenly stops working or if the tunnel fails for any reason. Mullvad automatically protects your data until your connection is reestablished.',
            )}
            type={ModalAlertType.info}
            buttons={[
              <AppButton.BlueButton key="back" onClick={this.hideKillSwitchInfo}>
                {messages.gettext('Got it!')}
              </AppButton.BlueButton>,
            ]}
            close={this.hideKillSwitchInfo}
          />
        )}
      </ModalContainer>
    );
  }

  private setBlockAds = async (enabled: boolean) => {
    await this.props.setDnsOptions({
      ...this.props.dns,
      defaultOptions: {
        ...this.props.dns.defaultOptions,
        blockAds: enabled,
      },
    });
  };

  private setBlockTrackers = async (enabled: boolean) => {
    await this.props.setDnsOptions({
      ...this.props.dns,
      defaultOptions: {
        ...this.props.dns.defaultOptions,
        blockTrackers: enabled,
      },
    });
  };

  private showKillSwitchInfo = () => {
    this.setState({ showKillSwitchInfo: true });
  };

  private hideKillSwitchInfo = () => {
    this.setState({ showKillSwitchInfo: false });
  };
}

function CustomDnsEnabledFooter() {
  const customDnsFeatureName = messages.pgettext('advanced-settings-view', 'Use custom DNS server');

  // TRANSLATORS: This is displayed when the custom DNS setting is turned on which makes the block
  // TRANSLATORS: ads/trackers settings disabled. The text enclosed in "**" will appear bold.
  // TRANSLATORS: Advanced settings refer to the name of the page with the title "Advanced".
  // TRANSLATORS: Available placeholders:
  // TRANSLATORS: %(customDnsFeatureName)s - The name displayed next to the custom DNS toggle.
  const blockingDisabledText = messages.pgettext(
    'preferences-view',
    'Disable **%(customDnsFeatureName)s** (under Advanced settings) to activate these settings.',
  );

  return (
    <Cell.Footer>
      <AriaDescription>
        <Cell.FooterText>
          {formatMarkdown(sprintf(blockingDisabledText, { customDnsFeatureName }))}
        </Cell.FooterText>
      </AriaDescription>
    </Cell.Footer>
  );
}