// @flow
import { ALERT } from 'constants/icons';
import React from 'react';
import Button from 'component/button';
import Card from 'component/common/card';
import { FormField } from 'component/common/form';
import FileSelector from 'component/common/file-selector';
import I18nMessage from 'component/i18nMessage';
import SettingAutoLaunch from 'component/settingAutoLaunch';
import SettingClosingBehavior from 'component/settingClosingBehavior';
import SettingCommentsServer from 'component/settingCommentsServer';
import SettingsRow from 'component/settingsRow';
import SettingWalletServer from 'component/settingWalletServer';
import Spinner from 'component/spinner';
import { getPasswordFromCookie } from 'util/saved-passwords';

// @if TARGET='app'
const IS_MAC = process.platform === 'darwin';
// @endif

type Price = {
  currency: string,
  amount: number,
};

type SetDaemonSettingArg = boolean | string | number | Price;

type DaemonSettings = {
  download_dir: string,
  share_usage_data: boolean,
  max_key_fee?: Price,
  max_connections_per_download?: number,
  save_files: boolean,
  save_blobs: boolean,
  ffmpeg_path: string,
};

type Props = {
  // --- select ---
  daemonSettings: DaemonSettings,
  ffmpegStatus: { available: boolean, which: string },
  findingFFmpeg: boolean,
  walletEncrypted: boolean,
  isAuthenticated: boolean,
  // --- perform ---
  setDaemonSetting: (string, ?SetDaemonSettingArg) => void,
  clearDaemonSetting: (string) => void,
  clearCache: () => Promise<any>,
  findFFmpeg: () => void,
  encryptWallet: () => void,
  decryptWallet: () => void,
  updateWalletStatus: () => void,
  confirmForgetPassword: ({}) => void,
};

export default function SettingSystem(props: Props) {
  const {
    daemonSettings,
    ffmpegStatus,
    findingFFmpeg,
    walletEncrypted,
    isAuthenticated,
    setDaemonSetting,
    clearDaemonSetting,
    clearCache,
    findFFmpeg,
    encryptWallet,
    decryptWallet,
    updateWalletStatus,
    confirmForgetPassword,
  } = props;

  const [clearingCache, setClearingCache] = React.useState(false);
  const [storedPassword, setStoredPassword] = React.useState(false);

  // @if TARGET='app'
  const { available: ffmpegAvailable, which: ffmpegPath } = ffmpegStatus;
  // @endif

  function onChangeEncryptWallet() {
    if (walletEncrypted) {
      decryptWallet();
    } else {
      encryptWallet();
    }
  }

  function onConfirmForgetPassword() {
    confirmForgetPassword({ callback: () => setStoredPassword(false) });
  }

  // Update ffmpeg variables
  React.useEffect(() => {
    // @if TARGET='app'
    const { available } = ffmpegStatus;
    const { ffmpeg_path: ffmpegPath } = daemonSettings;
    if (!available) {
      if (ffmpegPath) {
        clearDaemonSetting('ffmpeg_path');
      }
      findFFmpeg();
    }
    // @endif
  }, []); // eslint-disable-line react-hooks/exhaustive-deps

  // Update storedPassword state
  React.useEffect(() => {
    if (isAuthenticated || !IS_WEB) {
      updateWalletStatus();
      getPasswordFromCookie().then((p) => {
        if (typeof p === 'string') {
          setStoredPassword(true);
        }
      });
    }
  }, []); // eslint-disable-line react-hooks/exhaustive-deps

  return (
    <Card
      title={__('System')}
      subtitle=""
      isBodyList
      body={
        <>
          {/* @if TARGET='app' */}
          <SettingsRow title={__('Download directory')} subtitle={__('LBRY downloads will be saved here.')}>
            <FileSelector
              type="openDirectory"
              currentPath={daemonSettings.download_dir}
              onFileChosen={(newDirectory: WebFile) => {
                setDaemonSetting('download_dir', newDirectory.path);
              }}
            />
          </SettingsRow>
          {/* @endif */}

          {/* @if TARGET='app' */}
          <SettingsRow
            title={__('Save all viewed content to your downloads directory')}
            subtitle={__(
              'Paid content and some file types are saved by default. Changing this setting will not affect previously downloaded content.'
            )}
          >
            <FormField
              type="checkbox"
              name="save_files"
              onChange={() => setDaemonSetting('save_files', !daemonSettings.save_files)}
              checked={daemonSettings.save_files}
            />
          </SettingsRow>
          <SettingsRow
            title={__('Save hosting data to help the LBRY network')}
            subtitle={
              <React.Fragment>
                {__("If disabled, LBRY will be very sad and you won't be helping improve the network.")}{' '}
                <Button button="link" label={__('Learn more')} href="https://lbry.com/faq/host-content" />.
              </React.Fragment>
            }
          >
            <FormField
              type="checkbox"
              name="save_blobs"
              onChange={() => setDaemonSetting('save_blobs', !daemonSettings.save_blobs)}
              checked={daemonSettings.save_blobs}
            />
          </SettingsRow>
          {/* @endif */}

          {/* @if TARGET='app' */}
          {/* Auto launch in a hidden state doesn't work on mac https://github.com/Teamwork/node-auto-launch/issues/81 */}
          {!IS_MAC && (
            <SettingsRow
              title={__('Start minimized')}
              subtitle={__(
                'Improve view speed and help the LBRY network by allowing the app to cuddle up in your system tray.'
              )}
            >
              <SettingAutoLaunch noLabels />
            </SettingsRow>
          )}
          {/* @endif */}

          {/* @if TARGET='app' */}
          <SettingsRow title={__('Leave app running in notification area when the window is closed')}>
            <SettingClosingBehavior noLabels />
          </SettingsRow>
          {/* @endif */}

          {/* @if TARGET='app' */}
          <SettingsRow
            title={
              <span>
                {__('Automatic transcoding')}
                {findingFFmpeg && <Spinner type="small" />}
              </span>
            }
          >
            <FileSelector
              type="openDirectory"
              placeholder={__('A Folder containing FFmpeg')}
              currentPath={ffmpegPath || daemonSettings.ffmpeg_path}
              onFileChosen={(newDirectory: WebFile) => {
                // $FlowFixMe
                setDaemonSetting('ffmpeg_path', newDirectory.path);
                findFFmpeg();
              }}
              disabled={Boolean(ffmpegPath)}
            />
            <p className="help">
              {ffmpegAvailable ? (
                <I18nMessage
                  tokens={{
                    learn_more: (
                      <Button
                        button="link"
                        label={__('Learn more')}
                        href="https://lbry.com/faq/video-publishing-guide#automatic"
                      />
                    ),
                  }}
                >
                  FFmpeg is correctly configured. %learn_more%
                </I18nMessage>
              ) : (
                <I18nMessage
                  tokens={{
                    check_again: (
                      <Button
                        button="link"
                        label={__('Check again')}
                        onClick={() => findFFmpeg()}
                        disabled={findingFFmpeg}
                      />
                    ),
                    learn_more: (
                      <Button
                        button="link"
                        label={__('Learn more')}
                        href="https://lbry.com/faq/video-publishing-guide#automatic"
                      />
                    ),
                  }}
                >
                  FFmpeg could not be found. Navigate to it or Install, Then %check_again% or quit and restart the app.
                  %learn_more%
                </I18nMessage>
              )}
            </p>
          </SettingsRow>
          {/* @endif */}

          {/* @if TARGET='app' */}
          <SettingsRow title={__('Wallet security')}>
            <FormField
              disabled
              type="checkbox"
              name="encrypt_wallet"
              onChange={() => onChangeEncryptWallet()}
              checked={walletEncrypted}
              label={__('Encrypt my wallet with a custom password')}
              helper={
                <React.Fragment>
                  <I18nMessage
                    tokens={{
                      learn_more: (
                        <Button button="link" label={__('Learn more')} href="https://lbry.com/faq/account-sync" />
                      ),
                    }}
                  >
                    Wallet encryption is currently unavailable until it's supported for synced accounts. It will be
                    added back soon. %learn_more%.
                  </I18nMessage>
                  {/* {__('Secure your local wallet data with a custom password.')}{' '}
                         <strong>{__('Lost passwords cannot be recovered.')} </strong>
                         <Button button="link" label={__('Learn more')} href="https://lbry.com/faq/wallet-encryption" />. */}
                </React.Fragment>
              }
            />

            {walletEncrypted && storedPassword && (
              <FormField
                type="checkbox"
                name="save_password"
                onChange={onConfirmForgetPassword}
                checked={storedPassword}
                label={__('Save Password')}
                helper={<React.Fragment>{__('Automatically unlock your wallet on startup')}</React.Fragment>}
              />
            )}
          </SettingsRow>
          {/* @endif */}

          {/* @if TARGET='app' */}
          <SettingsRow title={__('Experimental settings')} useVerticalSeparator>
            {/* Disabling below until we get downloads to work with shared subscriptions code */}
            {/*
            <FormField
              type="checkbox"
              name="auto_download"
              onChange={() => setClientSetting(SETTINGS.AUTO_DOWNLOAD, !autoDownload)}
              checked={autoDownload}
              label={__('Automatically download new content from my subscriptions')}
              helper={__(
                "The latest file from each of your subscriptions will be downloaded for quick access as soon as it's published."
              )}
            />
            */}

            <fieldset-section>
              <FormField
                name="max_connections"
                type="select"
                label={__('Max Connections')}
                helper={__(
                  'For users with good bandwidth, try a higher value to improve streaming and download speeds. Low bandwidth users may benefit from a lower setting. Default is 4.'
                )}
                min={1}
                max={100}
                onChange={(e) => setDaemonSetting('max_connections_per_download', e.target.value)}
                value={daemonSettings.max_connections_per_download}
              >
                {[1, 2, 4, 6, 10, 20].map((connectionOption) => (
                  <option key={connectionOption} value={connectionOption}>
                    {connectionOption}
                  </option>
                ))}
              </FormField>
            </fieldset-section>

            <SettingWalletServer />
            <SettingCommentsServer />
          </SettingsRow>
          {/* @endif */}

          <SettingsRow
            title={__('Clear application cache')}
            subtitle={__('This might fix issues that you are having. Your wallet will not be affected.')}
          >
            <Button
              button="secondary"
              icon={ALERT}
              label={clearingCache ? __('Clearing') : __('Clear Cache')}
              onClick={() => {
                setClearingCache(true);
                clearCache();
              }}
              disabled={clearingCache}
            />
          </SettingsRow>
        </>
      }
    />
  );
}