<?php

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declare( strict_types = 1 );

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namespace Automattic\WooCommerce\Internal\Email;

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use Automattic\WooCommerce\Internal\RegisterHooksInterface;

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/**

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* Helper class for syncing email styles with theme styles.

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*

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* @internal Just for internal use.

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*/

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class EmailStyleSync implements RegisterHooksInterface {

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/**

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* Option name for auto-sync setting.

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*/

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const AUTO_SYNC_OPTION = 'woocommerce_email_auto_sync_with_theme';

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/**

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* Flag to prevent recursive syncing.

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*

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* @var bool

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*/

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private $is_syncing = false;

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/**

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* Register hooks and filters.

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*/

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public function register() {

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// Hook into theme change events.

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add_action( 'after_switch_theme', array( $this, 'sync_email_styles_with_theme' ) );

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add_action( 'customize_save_after', array( $this, 'sync_email_styles_with_theme' ) );

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// Hook into theme.json and global styles changes.

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add_action( 'wp_theme_json_data_updated', array( $this, 'sync_email_styles_with_theme' ) );

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add_action( 'rest_after_insert_global_styles', array( $this, 'sync_email_styles_with_theme' ) );

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add_action( 'update_option_wp_global_styles', array( $this, 'sync_email_styles_with_theme' ) );

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add_action( 'save_post_wp_global_styles', array( $this, 'sync_email_styles_with_theme' ) );

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// Hook into the theme editor save action.

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add_action( 'wp_ajax_wp_save_styles', array( $this, 'sync_email_styles_with_theme' ), 999 );

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// Hook into auto-sync option update to trigger sync when enabled.

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add_action( 'update_option_' . self::AUTO_SYNC_OPTION, array( $this, 'maybe_sync_on_option_update' ), 10, 3 );

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}

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/**

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* Trigger sync when auto-sync option is enabled.

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*

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* @param mixed $old_value The old option value.

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* @param mixed $new_value The new option value.

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* @param string $option The option name.

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*/

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public function maybe_sync_on_option_update( $old_value, $new_value, $option ) {

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if ( 'yes' === $new_value && 'yes' !== $old_value ) {

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// Force sync regardless of current auto-sync setting since we know it's being enabled.

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$this->is_syncing = true;

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try {

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$this->update_email_colors();

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} finally {

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$this->is_syncing = false;

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}

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}

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}

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/**

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* Check if auto-sync is enabled.

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*

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* @return bool Whether auto-sync is enabled.

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*/

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public function is_auto_sync_enabled() {

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return 'yes' === get_option( self::AUTO_SYNC_OPTION, 'no' );

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}

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/**

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* Set auto-sync enabled status.

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*

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* @param bool $enabled Whether auto-sync should be enabled.

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* @return bool Whether the option was updated.

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*/

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public function set_auto_sync( bool $enabled ) {

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return update_option( self::AUTO_SYNC_OPTION, $enabled ? 'yes' : 'no' );

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}

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/**

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* Sync email styles with theme styles if auto-sync is enabled.

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*

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* Uses a flag to prevent recursive calls.

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*/

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public function sync_email_styles_with_theme() {

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if ( $this->is_syncing || ! $this->is_auto_sync_enabled() || ! wp_theme_has_theme_json() ) {

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return;

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}

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$this->is_syncing = true;

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try {

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$this->update_email_colors();

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} finally {

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$this->is_syncing = false;

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}

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}

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/**

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* Update email colors from theme colors.

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*/

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protected function update_email_colors() {

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$colors = EmailColors::get_default_colors();

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if ( empty( $colors ) ) {

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return;

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}

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if ( ! empty( $colors['base'] ) ) {

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update_option( 'woocommerce_email_base_color', $colors['base'] );

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}

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if ( ! empty( $colors['bg'] ) ) {

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update_option( 'woocommerce_email_background_color', $colors['bg'] );

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}

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if ( ! empty( $colors['body_bg'] ) ) {

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update_option( 'woocommerce_email_body_background_color', $colors['body_bg'] );

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}

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if ( ! empty( $colors['body_text'] ) ) {

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update_option( 'woocommerce_email_text_color', $colors['body_text'] );

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}

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if ( ! empty( $colors['footer_text'] ) ) {

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update_option( 'woocommerce_email_footer_text_color', $colors['footer_text'] );

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}

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}

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}

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