<?php
/**
 * The Antispam Bee GUI
 *
 * @package Antispam Bee
 */

defined( 'ABSPATH' ) || exit;

/**
 * Antispam_Bee_GUI
 *
 * @since  2.4
 */
class Antispam_Bee_GUI extends Antispam_Bee {

	/**
	 * Save the GUI
	 *
	 * @since  0.1
	 * @since  2.7.0
	 * @since  2.10.0 Change country option names
	 */
	public static function save_changes() {
		if ( empty( $_POST ) ) {
			wp_die( esc_html__( 'Cheatin&#8217; uh?', 'antispam-bee' ) );
		}

		if ( ! current_user_can( 'manage_options' ) ) {
			wp_die( esc_html__( 'Cheatin&#8217; uh?', 'antispam-bee' ) );
		}

		check_admin_referer( '_antispam_bee__settings_nonce' );

		$selected_languages_raw = wp_unslash( self::get_key( $_POST, 'ab_translate_lang' ) );
		if ( ! is_array( $selected_languages_raw ) ) {
			$selected_languages_raw = array();
		}
		$selected_languages = array();
		$lang               = self::get_allowed_translate_languages();
		$lang               = array_keys( $lang );
		foreach ( $selected_languages_raw as $value ) {
			if ( ! in_array( $value, $lang, true ) ) {
				continue;
			}
			$selected_languages[] = $value;
		}
		$options = array(
			'flag_spam'                => (int) ( ! empty( $_POST['ab_flag_spam'] ) ),
			'email_notify'             => (int) ( ! empty( $_POST['ab_email_notify'] ) ),
			'cronjob_enable'           => (int) ( ! empty( $_POST['ab_cronjob_enable'] ) ),
			'cronjob_interval'         => (int) self::get_key( $_POST, 'ab_cronjob_interval' ),

			'no_notice'                => (int) ( ! empty( $_POST['ab_no_notice'] ) ),

			'dashboard_count'          => (int) ( ! empty( $_POST['ab_dashboard_count'] ) ),
			'dashboard_chart'          => (int) ( ! empty( $_POST['ab_dashboard_chart'] ) ),
			'regexp_check'             => (int) ( ! empty( $_POST['ab_regexp_check'] ) ),
			'spam_ip'                  => (int) ( ! empty( $_POST['ab_spam_ip'] ) ),
			'already_commented'        => (int) ( ! empty( $_POST['ab_already_commented'] ) ),
			'time_check'               => (int) ( ! empty( $_POST['ab_time_check'] ) ),

			'ignore_pings'             => (int) ( ! empty( $_POST['ab_ignore_pings'] ) ),
			'ignore_filter'            => (int) ( ! empty( $_POST['ab_ignore_filter'] ) ),
			'ignore_type'              => (int) self::get_key( $_POST, 'ab_ignore_type' ),

			'reasons_enable'           => (int) ( ! empty( $_POST['ab_reasons_enable'] ) ),
			'ignore_reasons'           => (array) self::get_key( $_POST, 'ab_ignore_reasons' ),

			'bbcode_check'             => (int) ( ! empty( $_POST['ab_bbcode_check'] ) ),
			'gravatar_check'           => (int) ( ! empty( $_POST['ab_gravatar_check'] ) ),
			'country_code'             => (int) ( ! empty( $_POST['ab_country_code'] ) ),
			'country_denied'            => sanitize_text_field( wp_unslash( self::get_key( $_POST, 'ab_country_denied' ) ) ),
			'country_allowed'            => sanitize_text_field( wp_unslash( self::get_key( $_POST, 'ab_country_allowed' ) ) ),

			'translate_api'            => (int) ( ! empty( $_POST['ab_translate_api'] ) ),
			'translate_lang'           => $selected_languages,

			'delete_data_on_uninstall' => (int) ( ! empty( $_POST['delete_data_on_uninstall'] ) ),

			'use_output_buffer' => (int) ( ! empty( $_POST['ab_use_output_buffer'] ) ),

		);

		foreach ( $options['ignore_reasons'] as $key => $val ) {
			if ( ! isset( self::$defaults['reasons'][ $val ] ) ) {
				unset( $options['ignore_reasons'][ $key ] );
			}
		}

		if ( empty( $options['cronjob_interval'] ) ) {
			$options['cronjob_enable'] = 0;
		}

		if ( empty( $options['translate_lang'] ) ) {
			$options['translate_api'] = 0;
		}

		if ( empty( $options['reasons_enable'] ) ) {
			$options['ignore_reasons'] = array();
		}

		if ( ! empty( $options['country_denied'] ) ) {
			$options['country_denied'] = preg_replace(
				'/[^A-Z ,;]/',
				'',
				strtoupper( $options['country_denied'] )
			);
		}

		if ( ! empty( $options['country_allowed'] ) ) {
			$options['country_allowed'] = preg_replace(
				'/[^A-Z ,;]/',
				'',
				strtoupper( $options['country_allowed'] )
			);
		}

		if ( empty( $options['country_denied'] ) && empty( $options['country_allowed'] ) ) {
			$options['country_code'] = 0;
		}

		if ( $options['cronjob_enable'] && ! self::get_option( 'cronjob_enable' ) ) {
			self::init_scheduled_hook();
		} elseif ( ! $options['cronjob_enable'] && self::get_option( 'cronjob_enable' ) ) {
			self::clear_scheduled_hook();
		}

		self::update_options( $options );

		wp_safe_redirect(
			add_query_arg(
				array(
					'updated' => 'true',
				),
				wp_get_referer()
			)
		);

		die();
	}

	/**
	 * Generation of a selectbox
	 *
	 * @since   2.4.5
	 *
	 * @param   string $name      Name of the Selectbox.
	 * @param   array  $data      Array with values.
	 * @param   string $selected  Selected value.
	 * @return  string  $html     Generated HTML.
	 */
	private static function _build_select( $name, $data, $selected ) {
		$html = '<select name="' . esc_attr( $name ) . '">';
		foreach ( $data as $k => $v ) {
			$html .= '<option value="' . esc_attr( $k ) . '" ' . selected( $selected, $k, false ) . '>' . esc_html( $v ) . '</option>';
		}
		$html .= '</select>';

		return $html;
	}


	/**
	 * Display the GUI
	 *
	 * @since  0.1
	 * @since  2.7.0
	 * @since  2.10.0 Change documentation links, change country option name, and add option to parse complete markup for comment forms
	 */
	public static function options_page() { ?>
		<div class="wrap" id="ab_main">
			<h2>
				Antispam Bee
			</h2>

			<form action="<?php echo esc_url( admin_url( 'admin-post.php' ) ); ?>" method="post">
				<input type="hidden" name="action" value="ab_save_changes" />

				<?php wp_nonce_field( '_antispam_bee__settings_nonce' ); ?>

				<?php $options = self::get_options(); ?>
				<div class="ab-wrap">

					<div class="ab-column ab-arrow">
						<h3 class="icon">
							<?php esc_html_e( 'Antispam filter', 'antispam-bee' ); ?>
						</h3>
						<h6>
							<?php esc_html_e( 'Filter in the execution order', 'antispam-bee' ); ?>
						</h6>

						<ul>
							<li>
								<input type="checkbox" name="ab_already_commented" id="ab_already_commented" value="1" <?php checked( $options['already_commented'], 1 ); ?> />
								<label for="ab_already_commented">
									<?php esc_html_e( 'Trust approved commenters', 'antispam-bee' ); ?>
									<span><?php esc_html_e( 'No review of already commented users', 'antispam-bee' ); ?></span>
								</label>
							</li>

							<?php if ( 1 === (int) get_option( 'show_avatars', 0 ) ) : ?>
							<li>
								<input type="checkbox" name="ab_gravatar_check" id="ab_gravatar_check" value="1" <?php checked( $options['gravatar_check'], 1 ); ?> />
								<label for="ab_gravatar_check">
									<?php esc_html_e( 'Trust commenters with a Gravatar', 'antispam-bee' ); ?>
									<span>
									<?php
									$link1 = sprintf(
										'<a href="%s" target="_blank" rel="noopener noreferrer">',
										esc_url(
											__( 'https://antispambee.pluginkollektiv.org/documentation/#trust-commenters-with-a-gravatar', 'antispam-bee' ),
											'https'
										)
									);
										printf(
											/* translators: 1: opening <a> tag with link to documentation. 2: closing </a> tag */
											esc_html__( 'Check if commenter has a Gravatar image. Please note the %1$sprivacy notice%2$s for this option.', 'antispam-bee' ),
											wp_kses_post( $link1 ),
											'</a>'
										);
									?>
									</span>
								</label>
							</li>
							<?php endif; ?>

							<li>
								<input type="checkbox" name="ab_time_check" id="ab_time_check" value="1" <?php checked( $options['time_check'], 1 ); ?> />
								<label for="ab_time_check">
									<?php esc_html_e( 'Consider the comment time', 'antispam-bee' ); ?>
									<span><?php esc_html_e( 'Not recommended when using page caching', 'antispam-bee' ); ?></span>
								</label>
							</li>

							<li>
								<input type="checkbox" name="ab_bbcode_check" id="ab_bbcode_check" value="1" <?php checked( $options['bbcode_check'], 1 ); ?> />
								<label for="ab_bbcode_check">
									<?php esc_html_e( 'BBCode links are spam', 'antispam-bee' ); ?>
									<span><?php esc_html_e( 'Review the comment contents for BBCode links', 'antispam-bee' ); ?></span>
								</label>
							</li>


							<li>
								<input type="checkbox" name="ab_regexp_check" id="ab_regexp_check" value="1" <?php checked( $options['regexp_check'], 1 ); ?> />
								<label for="ab_regexp_check">
									<?php esc_html_e( 'Use regular expressions', 'antispam-bee' ); ?>
									<span><?php esc_html_e( 'Predefined and custom patterns by plugin hook', 'antispam-bee' ); ?></span>
								</label>
							</li>

							<li>
								<input type="checkbox" name="ab_spam_ip" id="ab_spam_ip" value="1" <?php checked( $options['spam_ip'], 1 ); ?> />
								<label for="ab_spam_ip">
									<?php esc_html_e( 'Look in the local spam database', 'antispam-bee' ); ?>
									<span><?php esc_html_e( 'Check for spam data on your own blog', 'antispam-bee' ); ?></span>
								</label>
							</li>

							<li>
								<input type="checkbox" name="ab_country_code" id="ab_country_code" value="1" <?php checked( $options['country_code'], 1 ); ?> />
								<label for="ab_country_code">
									<?php esc_html_e( 'Block or allow comments from specific countries', 'antispam-bee' ); ?>
									<span>
									<?php
									$link1 = sprintf(
										'<a href="%s" target="_blank" rel="noopener noreferrer">',
										esc_url(
											__( 'https://antispambee.pluginkollektiv.org/documentation/#block-comments-from-specific-countries', 'antispam-bee' ),
											'https'
										)
									);
										printf(
											/* translators: 1: opening <a> tag with link to documentation. 2: closing </a> tag. */
											esc_html__( 'Filtering the requests depending on country. Please note the %1$sprivacy notice%2$s for this option.', 'antispam-bee' ),
											wp_kses_post( $link1 ),
											'</a>'
										);
									?>
									</span>
								</label>

								<ul>
									<?php
									$iso_codes_link = sprintf(
										'<a href="%s" target="_blank" rel="noopener noreferrer">',
										'https://www.iso.org/obp/ui/#search/code/'
									);
									?>
									<li>
										<textarea name="ab_country_denied" id="ab_country_denied" class="ab-medium-field code" placeholder="<?php esc_attr_e( 'e.g. BF, SG, YE', 'antispam-bee' ); ?>"><?php echo esc_attr( $options['country_denied'] ); ?></textarea>
										<label for="ab_country_denied">
											<span>
											<?php
												printf(
													/* translators: 1: opening <a> tag with link to ISO codes reference. 2: closing </a> tag. */
													esc_html__( 'Denied  %1$sISO country codes%2$s for this option.', 'antispam-bee' ),
													wp_kses_post( $iso_codes_link ),
													'</a>'
												);
											?>
											</span>
										</label>
									</li>
									<li>
										<textarea name="ab_country_allowed" id="ab_country_allowed" class="ab-medium-field code" placeholder="<?php esc_attr_e( 'e.g. BF, SG, YE', 'antispam-bee' ); ?>"><?php echo esc_attr( $options['country_allowed'] ); ?></textarea>
										<label for="ab_country_allowed">
											<span>
											<?php
												printf(
													/* translators: 1: opening <a> tag with link to ISO codes reference. 2: closing </a> tag. */
													esc_html__( 'Allowed  %1$sISO country codes%2$s for this option.', 'antispam-bee' ),
													wp_kses_post( $iso_codes_link ),
													'</a>'
												);
											?>
											</span>
										</label>
									</li>
								</ul>
							</li>

							<li>
								<input type="checkbox" name="ab_translate_api" id="ab_translate_api" value="1" <?php checked( $options['translate_api'], 1 ); ?> />
								<label for="ab_translate_api">
									<?php esc_html_e( 'Allow comments only in certain language', 'antispam-bee' ); ?>
									<span>
									<?php
										$link1 = sprintf(
											'<a href="%s" target="_blank" rel="noopener noreferrer">',
											esc_url(
												__( 'https://antispambee.pluginkollektiv.org/documentation/#allow-comments-only-in-certain-language', 'antispam-bee' ),
												'https'
											)
										);

										printf(
											/* translators: 1: opening <a> tag with link to documentation. 2: closing </a> tag. */
											esc_html__( 'Detect and approve only the specified language. Please note the %1$sprivacy notice%2$s for this option.', 'antispam-bee' ),
											wp_kses_post( $link1 ),
											'</a>'
										);
									?>
										</span>
								</label>

								<ul>
									<li>
										<select multiple name="ab_translate_lang[]">
											<?php
											$lang               = self::get_allowed_translate_languages();
											$selected_languages = (array) $options['translate_lang'];
											foreach ( $lang as $k => $v ) {
												?>
												<option <?php echo in_array( $k, $selected_languages, true ) ? 'selected="selected"' : ''; ?> value="<?php echo esc_attr( $k ); ?>"><?php echo esc_html( $v ); ?></option>

											<?php } ?>
										</select>
										<label for="ab_translate_lang">
											<?php esc_html_e( 'Language', 'antispam-bee' ); ?>
										</label>
									</li>
								</ul>
							</li>
						</ul>
					</div>

					<div class="ab-column ab-join">
						<h3 class="icon advanced">
							<?php esc_html_e( 'Advanced', 'antispam-bee' ); ?>
						</h3>
						<h6>
							<?php esc_html_e( 'Other antispam tools', 'antispam-bee' ); ?>
						</h6>

						<ul>
							<li>
								<input type="checkbox" name="ab_flag_spam" id="ab_flag_spam" value="1" <?php checked( $options['flag_spam'], 1 ); ?> />
								<label for="ab_flag_spam">
									<?php esc_html_e( 'Mark as spam, do not delete', 'antispam-bee' ); ?>
									<span><?php esc_html_e( 'Keep the spam in my blog.', 'antispam-bee' ); ?></span>
								</label>
							</li>

							<li class="ab_flag_spam_child">
								<input type="checkbox" name="ab_email_notify" id="ab_email_notify" value="1" <?php checked( $options['email_notify'], 1 ); ?> />
								<label for="ab_email_notify">
									<?php esc_html_e( 'Spam-Notification by email', 'antispam-bee' ); ?>
									<span><?php esc_html_e( 'Notify admins by e-mail about incoming spam', 'antispam-bee' ); ?></span>
								</label>
							</li>

							<li class="ab_flag_spam_child">
								<input type="checkbox" name="ab_no_notice" id="ab_no_notice" value="1" <?php checked( $options['no_notice'], 1 ); ?> />
								<label for="ab_no_notice">
									<?php esc_html_e( 'Do not save the spam reason', 'antispam-bee' ); ?>
									<span><?php esc_html_e( 'Spam reason as a table column in the spam overview', 'antispam-bee' ); ?></span>
								</label>
							</li>

							<li class="ab_flag_spam_child">
								<input type="checkbox" name="ab_cronjob_enable" id="ab_cronjob_enable" value="1" <?php checked( $options['cronjob_enable'], 1 ); ?> />
								<label for="ab_cronjob_enable">
									<?php
									echo sprintf(
										// translators: $s is an input field containing the number of days.
										esc_html__( 'Delete existing spam after %s days', 'antispam-bee' ),
										'<input type="number" min="0" name="ab_cronjob_interval" value="' . esc_attr( $options['cronjob_interval'] ) . '" class="ab-mini-field" />'
									)
									?>
									<span><?php esc_html_e( 'Cleaning up the database from old entries', 'antispam-bee' ); ?></span>
								</label>
							</li>

							<li class="ab_flag_spam_child">
								<input type="checkbox" name="ab_ignore_filter" id="ab_ignore_filter" value="1" <?php checked( $options['ignore_filter'], 1 ); ?> />
								<label for="ab_ignore_filter">
									<?php
									echo sprintf(
										// phpcs:disable WordPress.Security.EscapeOutput.OutputNotEscaped
										// Output gets escaped in _build_select()
										// translators: %s is the select field.
										esc_html__( 'Limit approval to %s', 'antispam-bee' ),
										self::_build_select(
											'ab_ignore_type',
											array(
												1 => esc_attr__( 'Comments', 'antispam-bee' ),
												2 => esc_attr__( 'Pings', 'antispam-bee' ),
											),
											$options['ignore_type']
										)
										// phpcs:enable WordPress.Security.EscapeOutput.OutputNotEscaped
									);
									?>
									<span><?php esc_html_e( 'Other types of spam will be deleted immediately', 'antispam-bee' ); ?></span>
								</label>
							</li>

							<li class="ab_flag_spam_child">
								<input type="checkbox" name="ab_reasons_enable" id="ab_reasons_enable" value="1" <?php checked( $options['reasons_enable'], 1 ); ?> />
								<label for="ab_reasons_enable">
									<?php esc_html_e( 'Delete comments by spam reasons', 'antispam-bee' ); ?>
									<span><?php esc_html_e( 'For multiple selections press Ctrl/CMD', 'antispam-bee' ); ?></span>
								</label>

								<ul>
									<li>
										<label for="ab_ignore_reasons">
											<?php esc_html_e( 'Spam Reason', 'antispam-bee' ); ?>
										</label>
										<select name="ab_ignore_reasons[]" id="ab_ignore_reasons" size="5" multiple>
											<?php foreach ( self::$defaults['reasons'] as $k => $v ) { ?>
												<option <?php selected( in_array( $k, $options['ignore_reasons'], true ), true ); ?> value="<?php echo esc_attr( $k ); ?>"><?php echo esc_html( $v ); ?></option>
											<?php } ?>
										</select>
									</li>
								</ul>
							</li>

							<li class="delete_data_on_uninstall">
								<input type="checkbox" name="delete_data_on_uninstall" id="delete_data_on_uninstall" value="1" <?php checked( $options['delete_data_on_uninstall'], 1 ); ?> />
								<label for="delete_data_on_uninstall">
									<?php esc_html_e( 'Delete Antispam Bee data when uninstalling', 'antispam-bee' ); ?>
									<span><?php esc_html_e( 'If checked, you will delete all data Antispam Bee creates, when uninstalling the plugin.', 'antispam-bee' ); ?></span>
								</label>
							</li>
						</ul>

					</div>


					<div class="ab-column ab-diff">
						<h3 class="icon more">
							<?php esc_html_e( 'More', 'antispam-bee' ); ?>
						</h3>
						<h6>
							<?php esc_html_e( 'Various options', 'antispam-bee' ); ?>
						</h6>

						<ul>
							<li>
								<input type="checkbox" name="ab_dashboard_chart" id="ab_dashboard_chart" value="1" <?php checked( $options['dashboard_chart'], 1 ); ?> />
								<label for="ab_dashboard_chart">
									<?php esc_html_e( 'Generate statistics as a dashboard widget', 'antispam-bee' ); ?>
									<span><?php esc_html_e( 'Daily updates of spam detection rate', 'antispam-bee' ); ?></span>
								</label>
							</li>

							<li>
								<input type="checkbox" name="ab_dashboard_count" id="ab_dashboard_count" value="1" <?php checked( $options['dashboard_count'], 1 ); ?> />
								<label for="ab_dashboard_count">
									<?php esc_html_e( 'Spam counter on the dashboard', 'antispam-bee' ); ?>
									<span><?php esc_html_e( 'Amount of identified spam comments', 'antispam-bee' ); ?></span>
								</label>
							</li>

							<li>
								<input type="checkbox" name="ab_ignore_pings" id="ab_ignore_pings" value="1" <?php checked( $options['ignore_pings'], 1 ); ?> />
								<label for="ab_ignore_pings">
									<?php esc_html_e( 'Do not check trackbacks / pingbacks', 'antispam-bee' ); ?>
									<span><?php esc_html_e( 'No spam check for link notifications', 'antispam-bee' ); ?></span>
								</label>
							</li>

							<li>
								<input type="checkbox" name="ab_use_output_buffer" id="ab_use_output_buffer" value="1" <?php checked( ! isset( $options['use_output_buffer'] ) || 1 == $options['use_output_buffer'], true ); ?> />
								<label for="ab_use_output_buffer">
									<?php esc_html_e( 'Check complete site markup for comment forms', 'antispam-bee' ); ?>
									<span>
									<?php
									printf( /* translators: s=filter name */
										esc_html__( 'Uses output buffering instead of the %s filter.', 'antispam-bee' ),
										'<code>comment_form_field_comment</code>'
									);
									?>
									</span>
								</label>
							</li>
						</ul>
					</div>

					<div class="ab-column ab-column--submit-service">
						<p>
							<a href="https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=TD4AMD2D8EMZW" target="_blank" rel="noopener noreferrer"><?php esc_html_e( 'Donate', 'antispam-bee' ); ?></a>
						</p>
						<p>
							<a href="<?php echo esc_url( __( 'https://wordpress.org/plugins/antispam-bee/#faq', 'antispam-bee' ) ); ?>" target="_blank" rel="noopener noreferrer"><?php esc_html_e( 'FAQ', 'antispam-bee' ); ?></a>
						</p>
						<p>
							<a href="<?php echo esc_url( __( 'https://antispambee.pluginkollektiv.org/documentation', 'antispam-bee' ) ); ?>" target="_blank" rel="noopener noreferrer"><?php esc_html_e( 'Manual', 'antispam-bee' ); ?></a>
						</p>
						<p>
							<a href="https://wordpress.org/support/plugin/antispam-bee/" target="_blank" rel="noopener noreferrer"><?php esc_html_e( 'Support', 'antispam-bee' ); ?></a>
						</p>

						<input type="submit" class="button button-primary" value="<?php esc_html_e( 'Save Changes', 'antispam-bee' ); ?>" />
					</div>
				</div>
			</form>
		</div>
		<?php
	}

	/**
	 * Get the languages, which are selectable to restrict the comment language to.
	 *
	 * @since 2.7.1
	 * @return array $lang
	 */
	private static function get_allowed_translate_languages() {

		$lang = array(
			'de' => __( 'German', 'antispam-bee' ),
			'en' => __( 'English', 'antispam-bee' ),
			'fr' => __( 'French', 'antispam-bee' ),
			'it' => __( 'Italian', 'antispam-bee' ),
			'es' => __( 'Spanish', 'antispam-bee' ),
		);

		/**
		 * Filter the possible languages for the language spam test
		 *
		 * @since 2.7.1
		 * @param (array) $lang The languages
		 * @return (array)
		 */
		return apply_filters( 'ab_get_allowed_translate_languages', $lang );
	}
}