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Edit File: contact-form-properties.php

<?php

add_filter(
	'wpcf7_pre_construct_contact_form_properties',
	'wpcf7_sendinblue_register_property',
	10, 2
);

/**
 * Registers the sendinblue contact form property.
 */
function wpcf7_sendinblue_register_property( $properties, $contact_form ) {
	$service = WPCF7_Sendinblue::get_instance();

if ( $service->is_active() ) {
		$properties += array(
			'sendinblue' => array(),
		);
	}

return $properties;
}

add_action(
	'wpcf7_save_contact_form',
	'wpcf7_sendinblue_save_contact_form',
	10, 3
);

/**
 * Saves the sendinblue property value.
 */
function wpcf7_sendinblue_save_contact_form( $contact_form, $args, $context ) {
	$service = WPCF7_Sendinblue::get_instance();

if ( ! $service->is_active() ) {
		return;
	}

$prop = wp_parse_args(
		(array) wpcf7_superglobal_post( 'wpcf7-sendinblue', array() ),
		array(
			'enable_contact_list' => false,
			'contact_lists' => array(),
			'enable_transactional_email' => false,
			'email_template' => 0,
		)
	);

$prop['contact_lists'] = array_map( 'absint', $prop['contact_lists'] );

$prop['email_template'] = absint( $prop['email_template'] );

$contact_form->set_properties( array(
		'sendinblue' => $prop,
	) );
}

add_filter(
	'wpcf7_editor_panels',
	'wpcf7_sendinblue_editor_panels',
	10, 1
);

/**
 * Builds the editor panel for the sendinblue property.
 */
function wpcf7_sendinblue_editor_panels( $panels ) {
	$service = WPCF7_Sendinblue::get_instance();

if ( ! $service->is_active() ) {
		return $panels;
	}

$contact_form = WPCF7_ContactForm::get_current();

$prop = wp_parse_args(
		$contact_form->prop( 'sendinblue' ),
		array(
			'enable_contact_list' => false,
			'contact_lists' => array(),
			'enable_transactional_email' => false,
			'email_template' => 0,
		)
	);

$editor_panel = static function () use ( $prop, $service ) {

$description = sprintf(
			esc_html(
				/* translators: %s: link labeled 'Brevo integration' */
				__( 'You can set up the Brevo integration here. For details, see %s.', 'contact-form-7' )
			),
			wpcf7_link(
				__( 'https://contactform7.com/sendinblue-integration/', 'contact-form-7' ),
				__( 'Brevo integration', 'contact-form-7' )
			)
		);

$lists = wpcf7_sendinblue_get_lists();
		$templates = $service->get_templates();

$formatter = new WPCF7_HTMLFormatter();

$formatter->append_start_tag( 'h2' );

$formatter->append_preformatted(
			esc_html( __( 'Brevo', 'contact-form-7' ) )
		);

$formatter->end_tag( 'h2' );

$formatter->append_start_tag( 'fieldset' );

$formatter->append_start_tag( 'legend' );

$formatter->append_preformatted( $description );

$formatter->end_tag( 'legend' );

$formatter->append_start_tag( 'table', array(
			'class' => 'form-table',
			'role' => 'presentation',
		) );

$formatter->append_start_tag( 'tbody' );

$formatter->append_start_tag( 'tr', array(
			'class' => $prop['enable_contact_list'] ? '' : 'inactive',
		) );

$formatter->append_start_tag( 'th', array(
			'scope' => 'row',
		) );

$formatter->append_preformatted(
			esc_html( __( 'Contact lists', 'contact-form-7' ) )
		);

$formatter->append_start_tag( 'td' );

$formatter->append_start_tag( 'fieldset' );

$formatter->append_start_tag( 'legend', array(
			'class' => 'screen-reader-text',
		) );

$formatter->append_preformatted(
			esc_html( __( 'Contact lists', 'contact-form-7' ) )
		);

$formatter->end_tag( 'legend' );

$formatter->append_start_tag( 'label', array(
			'for' => 'wpcf7-sendinblue-enable-contact-list',
		) );

$formatter->append_start_tag( 'input', array(
			'type' => 'checkbox',
			'name' => 'wpcf7-sendinblue[enable_contact_list]',
			'id' => 'wpcf7-sendinblue-enable-contact-list',
			'value' => '1',
			'checked' => $prop['enable_contact_list'],
		) );

$formatter->append_preformatted(
			esc_html( __( 'Add form submitters to your contact lists', 'contact-form-7' ) )
		);

$formatter->end_tag( 'tr' );

$formatter->append_start_tag( 'tr' );

$formatter->append_start_tag( 'th', array(
			'scope' => 'row',
		) );

$formatter->append_start_tag( 'td' );

$formatter->append_start_tag( 'fieldset' );

if ( $lists ) {
			$formatter->append_start_tag( 'legend' );

$formatter->append_preformatted(
				esc_html( __( 'Select lists to which contacts are added:', 'contact-form-7' ) )
			);

$formatter->end_tag( 'legend' );

$formatter->append_start_tag( 'ul' );

foreach ( $lists as $list ) {
				$formatter->append_start_tag( 'li' );
				$formatter->append_start_tag( 'label' );

$formatter->append_start_tag( 'input', array(
					'type' => 'checkbox',
					'name' => 'wpcf7-sendinblue[contact_lists][]',
					'value' => $list['id'],
					'checked' => in_array( $list['id'], $prop['contact_lists'] ),
				) );

$formatter->append_whitespace();

$formatter->append_preformatted( esc_html( $list['name'] ) );

$formatter->end_tag( 'li' );
			}

$formatter->end_tag( 'ul' );

} else {
			$formatter->append_start_tag( 'legend' );

$formatter->append_preformatted(
				esc_html( __( 'You have no contact list yet.', 'contact-form-7' ) )
			);

$formatter->end_tag( 'legend' );
		}

$formatter->end_tag( 'fieldset' );

$formatter->append_start_tag( 'p' );

$formatter->append_start_tag( 'a', array(
			'href' => 'https://my.sendinblue.com/lists',
			'target' => '_blank',
			'rel' => 'external noreferrer noopener',
		) );

$formatter->append_preformatted(
			esc_html( __( 'Manage your contact lists', 'contact-form-7' ) )
		);

$formatter->append_whitespace();

$formatter->append_start_tag( 'span', array(
			'class' => 'screen-reader-text',
		) );

$formatter->append_preformatted(
			esc_html( __( '(opens in a new tab)', 'contact-form-7' ) )
		);

$formatter->end_tag( 'span' );

$formatter->append_start_tag( 'span', array(
			'aria-hidden' => 'true',
			'class' => 'dashicons dashicons-external',
		) );

$formatter->end_tag( 'p' );

$formatter->end_tag( 'tr' );

$formatter->append_start_tag( 'tr', array(
			'class' => $prop['enable_transactional_email'] ? '' : 'inactive',
		) );

$formatter->append_start_tag( 'th', array(
			'scope' => 'row',
		) );

$formatter->append_preformatted(
			esc_html( __( 'Welcome email', 'contact-form-7' ) )
		);

$formatter->append_start_tag( 'td' );

$formatter->append_start_tag( 'fieldset' );

$formatter->append_start_tag( 'legend', array(
			'class' => 'screen-reader-text',
		) );

$formatter->append_preformatted(
			esc_html( __( 'Welcome email', 'contact-form-7' ) )
		);

$formatter->end_tag( 'legend' );

$formatter->append_start_tag( 'label', array(
			'for' => 'wpcf7-sendinblue-enable-transactional-email',
		) );

$formatter->append_start_tag( 'input', array(
			'type' => 'checkbox',
			'name' => 'wpcf7-sendinblue[enable_transactional_email]',
			'id' => 'wpcf7-sendinblue-enable-transactional-email',
			'value' => '1',
			'checked' => $prop['enable_transactional_email'],
		) );

$formatter->append_preformatted(
			esc_html( __( 'Send a welcome email to new contacts', 'contact-form-7' ) )
		);

$formatter->end_tag( 'fieldset' );

$formatter->end_tag( 'tr' );

$formatter->append_start_tag( 'tr' );

$formatter->append_start_tag( 'th', array(
			'scope' => 'row',
		) );

$formatter->append_start_tag( 'td' );

$formatter->append_start_tag( 'fieldset' );

if ( $templates ) {
			$formatter->append_start_tag( 'legend' );

$formatter->append_preformatted(
				esc_html( __( 'Select an email template:', 'contact-form-7' ) )
			);

$formatter->end_tag( 'legend' );

$formatter->append_start_tag( 'select', array(
				'name' => 'wpcf7-sendinblue[email_template]',
			) );

$formatter->append_start_tag( 'option', array(
				'value' => 0,
				'selected' => 0 === $prop['email_template'],
			) );

$formatter->append_preformatted(
				esc_html( __( '&mdash; Select &mdash;', 'contact-form-7' ) )
			);

$formatter->end_tag( 'option' );

foreach ( $templates as $template ) {
				$formatter->append_start_tag( 'option', array(
					'value' => $template['id'],
					'selected' => $prop['email_template'] === $template['id'],
				) );

$formatter->append_preformatted( esc_html( $template['name'] ) );

$formatter->end_tag( 'option' );
			}

$formatter->end_tag( 'select' );

} else {
			$formatter->append_start_tag( 'legend' );

$formatter->append_preformatted(
				esc_html( __( 'You have no active email template yet.', 'contact-form-7' ) )
			);

$formatter->end_tag( 'legend' );
		}

$formatter->end_tag( 'fieldset' );

$formatter->append_start_tag( 'p' );

$formatter->append_start_tag( 'a', array(
			'href' => 'https://my.sendinblue.com/camp/lists/template',
			'target' => '_blank',
			'rel' => 'external noreferrer noopener',
		) );

$formatter->append_preformatted(
			esc_html( __( 'Manage your email templates', 'contact-form-7' ) )
		);

$formatter->append_whitespace();

$formatter->append_start_tag( 'span', array(
			'class' => 'screen-reader-text',
		) );

$formatter->append_preformatted(
			esc_html( __( '(opens in a new tab)', 'contact-form-7' ) )
		);

$formatter->end_tag( 'span' );

$formatter->append_start_tag( 'span', array(
			'aria-hidden' => 'true',
			'class' => 'dashicons dashicons-external',
		) );

$formatter->end_tag( 'p' );

$formatter->end_tag( 'tr' );

$formatter->end_tag( 'table' );

$formatter->print();
	};

$panels += array(
		'sendinblue-panel' => array(
			'title' => __( 'Brevo', 'contact-form-7' ),
			'callback' => $editor_panel,
		),
	);

return $panels;
}

/**
 * Retrieves contact lists from Brevo's database.
 */
function wpcf7_sendinblue_get_lists() {
	static $lists = array();

$service = WPCF7_Sendinblue::get_instance();

if ( ! empty( $lists ) or ! $service->is_active() ) {
		return $lists;
	}

$limit = 50;
	$offset = 0;

while ( count( $lists ) < $limit * 10 ) {
		$lists_next = (array) $service->get_lists( array(
			'limit' => $limit,
			'offset' => $offset,
		) );

if ( ! empty( $lists_next ) ) {
			$lists = array_merge( $lists, $lists_next );
		}

if ( count( $lists_next ) < $limit ) {
			break;
		}

$offset += $limit;
	}

return $lists;
}

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