<?php

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namespace WPForms\Emails;

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use WPForms\Vendor\TijsVerkoyen\CssToInlineStyles\CssToInlineStyles;

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use WPForms\Helpers\Templates;

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/**

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* Styler class inline style email templates.

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*

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* @since 1.5.4

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*/

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class Styler {

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/**

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* Email message with no styles.

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*

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* @since 1.5.4

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*

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* @var string

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*/

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protected $email;

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/**

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* Email style templates names.

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*

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* @since 1.5.4

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*

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* @var array

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*/

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protected $style_templates;

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/**

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* Email style overrides.

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*

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* @since 1.5.4

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*

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* @var array

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*/

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protected $style_overrides;

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/**

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* Email message with inline styles.

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*

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* @since 1.5.4

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*

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* @var string

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*/

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protected $styled_email;

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/**

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* Constructor.

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*

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* @since 1.5.4

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*

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* @param string $email Email with no styles.

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* @param array $style_templates Email style templates.

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* @param array $style_overrides Email style overrides.

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*/

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public function __construct( $email, $style_templates, $style_overrides ) {

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$this->email = $email;

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$this->style_templates = is_array( $style_templates ) ? $style_templates : [];

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$this->style_overrides = is_array( $style_overrides ) ? $style_overrides : [];

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}

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/**

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* Template style overrides.

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*

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* @since 1.5.4

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*

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* @return array

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*/

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protected function get_style_overrides() {

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$defaults = Helpers::get_current_template_style_overrides();

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$overrides = \wp_parse_args( $this->style_overrides, $defaults );

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return \apply_filters( 'wpforms_emails_mailer_get_style_overrides', $overrides, $this );

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}

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/**

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* Locate template name matching styles.

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*

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* @since 1.5.4

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*

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* @param string $name Template file name part.

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*

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* @return string

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*/

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protected function get_styles( $name = 'style' ) {

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if ( ! \array_key_exists( $name, $this->style_templates ) ) {

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return '';

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}

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return Templates::get_html(

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$this->style_templates[ $name ],

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$this->get_style_overrides(),

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true

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);

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}

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/**

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* Final processing of the template markup.

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*

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* @since 1.5.4

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*/

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public function process_markup() {

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$this->styled_email = ( new CssToInlineStyles() )->convert( $this->email, $this->get_styles() );

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$queries = '<style type="text/css">' . $this->get_styles( 'queries' ) . "</style>\n</head>";

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// Inject media queries, CssToInlineStyles strips them.

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$this->styled_email = \str_replace( '</head>', $queries, $this->styled_email );

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}

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/**

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* Get an email with inline styles.

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*

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* @since 1.5.4

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*

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* @return string

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*/

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public function get() {

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if ( empty( $this->styled_email ) ) {

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$this->process_markup();

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}

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return $this->styled_email;

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}

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}

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