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1<?php
2/**
3 * Subscriptions Block.
4 *
5 * @package automattic/jetpack
6 */
7
8namespace Automattic\Jetpack\Extensions\Subscriptions;
9
10use Automattic\Jetpack\Blocks;
11use Automattic\Jetpack\Extensions\Premium_Content\Subscription_Service\Abstract_Token_Subscription_Service;
12use Automattic\Jetpack\Extensions\Premium_Content\Subscription_Service\Jetpack_Token_Subscription_Service;
13use Automattic\Jetpack\Modules;
14use Automattic\Jetpack\Status\Host;
15use Automattic\Jetpack\Status\Request;
16use Jetpack_Gutenberg;
17use Jetpack_Memberships;
18use Jetpack_Subscriptions_Widget;
19
20if ( ! defined( 'ABSPATH' ) ) {
21    exit( 0 );
22}
23
24require_once __DIR__ . '/class-jetpack-subscription-site.php';
25require_once __DIR__ . '/constants.php';
26require_once JETPACK__PLUGIN_DIR . 'extensions/blocks/premium-content/_inc/subscription-service/include.php';
27
28/**
29 * These block defaults should match ./constants.js
30 */
31const DEFAULT_BORDER_RADIUS_VALUE = 0;
32const DEFAULT_BORDER_WEIGHT_VALUE = 1;
33const DEFAULT_FONTSIZE_VALUE      = '16px';
34const DEFAULT_PADDING_VALUE       = 15;
35const DEFAULT_SPACING_VALUE       = 10;
36const DEFAULT_BUTTON_WIDTH        = 'auto';
37
38/**
39 * Registers the block for use in Gutenberg
40 * This is done via an action so that we can disable
41 * registration if we need to.
42 */
43function register_block() {
44    /*
45     * Disable the feature on P2 blogs
46     */
47    if ( function_exists( '\WPForTeams\is_wpforteams_site' ) &&
48        \WPForTeams\is_wpforteams_site( get_current_blog_id() ) ) {
49        return;
50    }
51
52    /*
53     * Do not proceed if the newsletter feature (Subscriptions module) is not enabled
54     */
55    if ( ! ( new Modules() )->is_active( 'subscriptions' ) ) {
56        return;
57    }
58
59    require_once JETPACK__PLUGIN_DIR . '/modules/memberships/class-jetpack-memberships.php';
60
61    if ( \Jetpack_Memberships::should_enable_monetize_blocks_in_editor() ) {
62        Blocks::jetpack_register_block(
63            __DIR__,
64            array(
65                'render_callback'       => __NAMESPACE__ . '\render_block',
66                'render_email_callback' => __NAMESPACE__ . '\render_email',
67                'supports'              => array(
68                    'spacing' => array(
69                        'margin'  => true,
70                        'padding' => true,
71                    ),
72                    'align'   => array( 'wide', 'full' ),
73                ),
74            )
75        );
76    }
77
78    register_post_meta(
79        'post',
80        META_NAME_FOR_POST_LEVEL_ACCESS_SETTINGS,
81        array(
82            'show_in_rest'      => true,
83            'single'            => true,
84            'type'              => 'string',
85            // The REST schema already rejects non-strings, but non-REST writers
86            // (importers, XML-RPC, WP-CLI, direct update_post_meta, sync) only pass
87            // through sanitize_meta(). Coerce anything that isn't a string to ''
88            // ("everybody") so a corrupt value can't be persisted and later fatal the
89            // strict string-typed access checks.
90            'sanitize_callback' => function ( $value ) {
91                return is_string( $value ) ? $value : '';
92            },
93            'auth_callback'     => function () {
94                return wp_get_current_user()->has_cap( 'edit_posts' );
95            },
96        )
97    );
98
99    // The meta is a "don't send" flag, so invert the blog option (which defaults to true = "send").
100    $dont_email_default = ! get_option( 'wpcom_newsletter_send_default', true );
101
102    register_post_meta(
103        'post',
104        META_NAME_FOR_POST_DONT_EMAIL_TO_SUBS,
105        array(
106            'default'       => $dont_email_default,
107            'show_in_rest'  => true,
108            'single'        => true,
109            'type'          => 'boolean',
110            'auth_callback' => function () {
111                return wp_get_current_user()->has_cap( 'edit_posts' );
112            },
113        )
114    );
115
116    register_post_meta(
117        'post',
118        META_NAME_FOR_POST_TIER_ID_SETTINGS,
119        array(
120            'show_in_rest'  => true,
121            'single'        => true,
122            'type'          => 'integer',
123            'auth_callback' => function () {
124                return wp_get_current_user()->has_cap( 'edit_posts' );
125            },
126        )
127    );
128
129    register_post_meta(
130        'post',
131        META_NAME_CONTAINS_PAYWALLED_CONTENT,
132        array(
133            'show_in_rest'  => true,
134            'single'        => true,
135            'type'          => 'boolean',
136            'auth_callback' => function () {
137                return wp_get_current_user()->has_cap( 'edit_posts' );
138            },
139        )
140    );
141
142    // This ensures Jetpack will sync this post meta to WPCOM.
143    add_filter(
144        'jetpack_sync_post_meta_whitelist',
145        function ( $allowed_meta ) {
146            return array_merge(
147                $allowed_meta,
148                array(
149                    META_NAME_FOR_POST_LEVEL_ACCESS_SETTINGS,
150                    META_NAME_FOR_POST_DONT_EMAIL_TO_SUBS,
151                    META_NAME_CONTAINS_PAYWALLED_CONTENT,
152                    META_NAME_FOR_POST_TIER_ID_SETTINGS,
153                    META_NAME_CONTAINS_PAID_CONTENT,
154                )
155            );
156        }
157    );
158
159    // Hide the content â€“ Priority 8 makes it run before do_blocks gets called for the content
160    add_filter( 'the_content', __NAMESPACE__ . '\add_paywall', 8 );
161
162    // Close comments on the front-end
163    add_filter( 'comments_open', __NAMESPACE__ . '\maybe_close_comments', 10, 2 );
164    add_filter( 'pings_open', __NAMESPACE__ . '\maybe_close_comments', 10, 2 );
165
166    // Hide existing comments
167    add_filter( 'get_comment', __NAMESPACE__ . '\maybe_gate_existing_comments' );
168
169    // Add a 'Newsletter' column to the Edit posts page
170    // We only display the "Newsletter" column if we have configured the paid newsletter plan
171    if ( defined( 'WP_ADMIN' ) && WP_ADMIN && Jetpack_Memberships::has_configured_plans_jetpack_recurring_payments( 'newsletter' ) ) {
172        add_action( 'manage_post_posts_columns', __NAMESPACE__ . '\register_newsletter_access_column' );
173        add_action( 'manage_post_posts_custom_column', __NAMESPACE__ . '\render_newsletter_access_rows', 10, 2 );
174        add_action( 'admin_head', __NAMESPACE__ . '\newsletter_access_column_styles' );
175    }
176
177    add_action( 'init', __NAMESPACE__ . '\maybe_prevent_super_cache_caching' );
178
179    add_action( 'wp_after_insert_post', __NAMESPACE__ . '\add_paywalled_content_post_meta', 99, 2 );
180
181    add_filter(
182        'jetpack_options_whitelist',
183        function ( $options ) {
184            $options[] = 'jetpack_subscriptions_subscribe_post_end_enabled';
185            $options[] = 'jetpack_subscriptions_subscribe_navigation_enabled';
186
187            return $options;
188        }
189    );
190
191    // If called via REST API, we need to register later in the lifecycle
192    if ( ( new Host() )->is_wpcom_platform() && ! Request::is_frontend() ) {
193        add_action(
194            'restapi_theme_init',
195            function () {
196                Jetpack_Subscription_Site::init()->handle_subscribe_block_placements();
197            }
198        );
199    } else {
200        Jetpack_Subscription_Site::init()->handle_subscribe_block_placements();
201    }
202}
203add_action( 'init', __NAMESPACE__ . '\register_block', 9 );
204
205/**
206 * Returns true when in a WP.com environment.
207 *
208 * @return boolean
209 */
210function is_wpcom() {
211    return defined( 'IS_WPCOM' ) && IS_WPCOM;
212}
213
214/**
215 * Adds a 'Newsletter' column after the 'Title' column in the post list
216 *
217 * @param array $columns An array of column names.
218 * @return array An array of column names.
219 */
220function register_newsletter_access_column( $columns ) {
221    $position   = array_search( 'title', array_keys( $columns ), true );
222    $new_column = array( NEWSLETTER_COLUMN_ID => __( 'Newsletter', 'jetpack' ) );
223    return array_merge(
224        array_slice( $columns, 0, $position + 1, true ),
225        $new_column,
226        array_slice( $columns, $position, null, true )
227    );
228}
229
230/**
231 * Add a meta to prevent publication on firehose, ES AI or Reader
232 *
233 * @param int      $post_id Post id being saved.
234 * @param \WP_Post $post Post being saved.
235 * @return void
236 */
237function add_paywalled_content_post_meta( int $post_id, \WP_Post $post ) {
238    if ( $post->post_type !== 'post' ) {
239        return;
240    }
241
242    $access_level = get_post_meta( $post_id, META_NAME_FOR_POST_LEVEL_ACCESS_SETTINGS, true );
243
244    $is_paywalled = false;
245    switch ( $access_level ) {
246        case Abstract_Token_Subscription_Service::POST_ACCESS_LEVEL_PAID_SUBSCRIBERS_ALL_TIERS:
247        case Abstract_Token_Subscription_Service::POST_ACCESS_LEVEL_PAID_SUBSCRIBERS:
248        case Abstract_Token_Subscription_Service::POST_ACCESS_LEVEL_SUBSCRIBERS:
249            $is_paywalled = true;
250    }
251    if ( $is_paywalled ) {
252        update_post_meta( $post_id, META_NAME_CONTAINS_PAYWALLED_CONTENT, $is_paywalled );
253    }
254    if ( ! $is_paywalled ) {
255        delete_post_meta( $post_id, META_NAME_CONTAINS_PAYWALLED_CONTENT );
256    }
257}
258
259/**
260 * Displays the newsletter access level.
261 *
262 * @param string $column_id The ID of the column to display.
263 * @param int    $post_id The current post ID.
264 */
265function render_newsletter_access_rows( $column_id, $post_id ) {
266    if ( NEWSLETTER_COLUMN_ID !== $column_id ) {
267        return;
268    }
269
270    $access_level = get_post_meta( $post_id, META_NAME_FOR_POST_LEVEL_ACCESS_SETTINGS, true );
271
272    switch ( $access_level ) {
273        case Abstract_Token_Subscription_Service::POST_ACCESS_LEVEL_PAID_SUBSCRIBERS_ALL_TIERS:
274            echo esc_html__( 'Paid Subscribers (all plans)', 'jetpack' );
275            break;
276        case Abstract_Token_Subscription_Service::POST_ACCESS_LEVEL_PAID_SUBSCRIBERS:
277            echo esc_html__( 'Paid Subscribers', 'jetpack' );
278            break;
279        case Abstract_Token_Subscription_Service::POST_ACCESS_LEVEL_SUBSCRIBERS:
280            echo esc_html__( 'Subscribers', 'jetpack' );
281            break;
282        case Abstract_Token_Subscription_Service::POST_ACCESS_LEVEL_EVERYBODY:
283            echo esc_html__( 'Everybody', 'jetpack' );
284            break;
285        default:
286            echo '';
287    }
288}
289
290/**
291 * Adds the Newsletter column styles
292 */
293function newsletter_access_column_styles() {
294    echo '<style id="jetpack-newsletter-newsletter-access-column"> table.fixed .column-newsletter_access { width: 10%; } </style>';
295}
296
297/**
298 * Determine the amount of folks currently subscribed to the blog, splitted out in total_subscribers, email_subscribers, social_followers & paid_subscribers.
299 *
300 * @return array containing ['value' => ['total_subscribers' => 0, 'email_subscribers' => 0, 'paid_subscribers' => 0, 'social_followers' => 0]]
301 */
302function fetch_subscriber_counts() {
303    $subs_count = 0;
304    if ( is_wpcom() ) {
305        $subs_count = array(
306            'value' => \wpcom_fetch_subs_counts( true ),
307        );
308    } else {
309        $cache_key  = 'wpcom_subscribers_totals';
310        $subs_count = get_transient( $cache_key );
311        if ( false === $subs_count || 'failed' === $subs_count['status'] ) {
312            $xml = new \Jetpack_IXR_Client();
313            $xml->query( 'jetpack.fetchSubscriberCounts' );
314
315            if ( $xml->isError() ) { // If we get an error from .com, set the status to failed so that we will try again next time the data is requested.
316                $subs_count = array(
317                    'status'  => 'failed',
318                    'code'    => $xml->getErrorCode(),
319                    'message' => $xml->getErrorMessage(),
320                    'value'   => $subs_count['value'] ?? array(
321                        'total_subscribers' => 0,
322                        'email_subscribers' => 0,
323                        'social_followers'  => 0,
324                        'paid_subscribers'  => 0,
325                    ),
326                );
327            } else {
328                $subs_count = array(
329                    'status' => 'success',
330                    'value'  => $xml->getResponse(),
331                );
332            }
333            set_transient( $cache_key, $subs_count, 3600 ); // Try to cache the result for at least 1 hour.
334        }
335    }
336    return $subs_count;
337}
338
339/**
340 * Returns subscriber count based on include_social_followers attribute
341 *
342 * @param bool $include_social_followers Whether to include social followers in the count.
343 * @return int
344 */
345function get_subscriber_count( $include_social_followers ) {
346    $counts = fetch_subscriber_counts();
347
348    if ( $include_social_followers ) {
349        $subscriber_count = $counts['value']['total_subscribers'] + $counts['value']['social_followers'];
350    } else {
351        $subscriber_count = $counts['value']['total_subscribers'];
352    }
353    return $subscriber_count;
354}
355
356/**
357 * Returns true if the block attributes contain a value for the given key.
358 *
359 * @param array  $attributes Array containing the block attributes.
360 * @param string $key        Block attribute key.
361 *
362 * @return boolean
363 */
364function has_attribute( $attributes, $key ) {
365    return isset( $attributes[ $key ] ) && $attributes[ $key ] !== 'undefined';
366}
367
368/**
369 * Returns the value for the given attribute key, with the option of providing a default fallback value.
370 *
371 * @param array  $attributes Array containing the block attributes.
372 * @param string $key        Block attribute key.
373 * @param mixed  $default    Optional fallback value in case the key doesn't exist.
374 *
375 * @return mixed
376 */
377function get_attribute( $attributes, $key, $default = null ) {
378    return has_attribute( $attributes, $key ) ? $attributes[ $key ] : $default;
379}
380
381/**
382 * Mimics getColorClassName, getFontSizeClass and getGradientClass from @wordpress/block-editor js package.
383 *
384 * @param string $setting Setting name.
385 * @param string $value   Setting value.
386 *
387 * @return string
388 */
389function get_setting_class_name( $setting, $value ) {
390    if ( ! $setting || ! $value ) {
391        return '';
392    }
393
394    return sprintf( 'has-%s-%s', $value, $setting );
395}
396
397/**
398 * Uses block attributes to generate an array containing the classes for various block elements.
399 * Based on Jetpack_Subscriptions_Widget::do_subscription_form() which the block was originally using.
400 *
401 * @param array $attributes Array containing the block attributes.
402 *
403 * @return array
404 */
405function get_element_class_names_from_attributes( $attributes ) {
406    $text_color_class = get_setting_class_name( 'color', get_attribute( $attributes, 'textColor' ) );
407    $font_size_class  = get_setting_class_name( 'font-size', get_attribute( $attributes, 'fontSize' ) );
408    $border_class     = get_setting_class_name( 'border-color', get_attribute( $attributes, 'borderColor' ) );
409
410    $button_background_class = get_setting_class_name( 'background-color', get_attribute( $attributes, 'buttonBackgroundColor' ) );
411    $button_gradient_class   = get_setting_class_name( 'gradient-background', get_attribute( $attributes, 'buttonGradient' ) );
412
413    $email_field_background_class = get_setting_class_name( 'background-color', get_attribute( $attributes, 'emailFieldBackgroundColor' ) );
414    $email_field_gradient_class   = get_setting_class_name( 'gradient-background', get_attribute( $attributes, 'emailFieldGradient' ) );
415
416    $submit_button_classes = array_filter(
417        array(
418            'wp-block-button__link'  => true,
419            'no-border-radius'       => 0 === get_attribute( $attributes, 'borderRadius', 0 ),
420            $font_size_class         => true,
421            $border_class            => true,
422            'has-text-color'         => ! empty( $text_color_class ),
423            $text_color_class        => true,
424            'has-background'         => ! empty( $button_background_class ) || ! empty( $button_gradient_class ),
425            $button_background_class => ! empty( $button_background_class ),
426            $button_gradient_class   => ! empty( $button_gradient_class ),
427        )
428    );
429
430    $email_field_classes = array_filter(
431        array(
432            'no-border-radius'            => 0 === get_attribute( $attributes, 'borderRadius', 0 ),
433            $font_size_class              => true,
434            $border_class                 => true,
435            $email_field_background_class => true,
436            $email_field_gradient_class   => true,
437        )
438    );
439
440    $block_wrapper_classes = array_filter(
441        array(
442            'wp-block-jetpack-subscriptions__supports-newline' => true,
443            'wp-block-jetpack-subscriptions__use-newline' => (bool) get_attribute( $attributes, 'buttonOnNewLine' ),
444            'wp-block-jetpack-subscriptions__show-subs'   => (bool) get_attribute( $attributes, 'showSubscribersTotal' ),
445        )
446    );
447
448    return array(
449        'block_wrapper' => implode( ' ', array_keys( $block_wrapper_classes ) ),
450        'email_field'   => implode( ' ', array_keys( $email_field_classes ) ),
451        'submit_button' => implode( ' ', array_keys( $submit_button_classes ) ),
452    );
453}
454
455/**
456 * Checks if block style is "button only"
457 *
458 * @param string $class_name Block attribute className; multiple names are spearated by space.
459 *
460 * @return bool
461 */
462function is_button_only_style( $class_name ) {
463    if ( empty( $class_name ) ) {
464        return false;
465    }
466
467    $class_names = explode( ' ', $class_name );
468    return in_array( 'is-style-button', $class_names, true );
469}
470
471/**
472 * Uses block attributes to generate an array containing the styles for various block elements.
473 * Based on Jetpack_Subscriptions_Widget::do_subscription_form() which the block was originally using.
474 *
475 * @param array $attributes Array containing the block attributes.
476 *
477 * @return array
478 */
479function get_element_styles_from_attributes( $attributes ) {
480    $is_button_only_style = is_button_only_style( get_attribute( $attributes, 'className', '' ) );
481
482    $button_background_style = ! has_attribute( $attributes, 'buttonBackgroundColor' ) && has_attribute( $attributes, 'customButtonGradient' )
483        ? get_attribute( $attributes, 'customButtonGradient' )
484        : get_attribute( $attributes, 'customButtonBackgroundColor' );
485
486    $email_field_styles           = '';
487    $submit_button_wrapper_styles = '';
488    $submit_button_styles         = '';
489
490    if ( ! empty( $button_background_style ) ) {
491        $submit_button_styles .= sprintf( 'background: %s;', $button_background_style );
492    }
493
494    if ( has_attribute( $attributes, 'customTextColor' ) ) {
495        $submit_button_styles .= sprintf( 'color: %s;', get_attribute( $attributes, 'customTextColor' ) );
496    }
497
498    if ( has_attribute( $attributes, 'buttonWidth' ) ) {
499        $submit_button_wrapper_styles .= sprintf( 'width: %s;', get_attribute( $attributes, 'buttonWidth', DEFAULT_BUTTON_WIDTH ) );
500        $submit_button_wrapper_styles .= 'max-width: 100%;';
501
502        // Account for custom margins on inline forms.
503        $submit_button_styles .= true === get_attribute( $attributes, 'buttonOnNewLine' )
504            ? 'width: 100%;'
505            : sprintf( 'width: calc(100%% - %dpx);', get_attribute( $attributes, 'spacing', DEFAULT_SPACING_VALUE ) );
506    }
507
508    $font_size = get_attribute( $attributes, 'customFontSize', DEFAULT_FONTSIZE_VALUE );
509    $style     = sprintf( 'font-size: %s%s;', $font_size, is_numeric( $font_size ) ? 'px' : '' );
510
511    $submit_button_styles .= $style;
512    $email_field_styles   .= $style;
513
514    $padding = get_attribute( $attributes, 'padding', DEFAULT_PADDING_VALUE );
515    $style   = sprintf( 'padding: %1$dpx %2$dpx %1$dpx %2$dpx;', $padding, round( $padding * 1.5 ) );
516
517    $submit_button_styles .= $style;
518    $email_field_styles   .= $style;
519
520    if ( ! $is_button_only_style ) {
521        $button_spacing = get_attribute( $attributes, 'spacing', DEFAULT_SPACING_VALUE );
522        if ( true === get_attribute( $attributes, 'buttonOnNewLine' ) ) {
523            $submit_button_styles .= sprintf( 'margin-top: %dpx;', $button_spacing );
524        } else {
525            $submit_button_styles .= 'margin: 0; '; // Reset Safari's 2px default margin for buttons affecting input and button union
526            $submit_button_styles .= sprintf( 'margin-left: %dpx;', $button_spacing );
527        }
528    }
529
530    if ( has_attribute( $attributes, 'borderColor' ) ) {
531        $style                 = sprintf( 'border-color: %s;', get_attribute( $attributes, 'borderColor', '' ) );
532        $submit_button_styles .= $style;
533        $email_field_styles   .= $style;
534    }
535
536    $style                 = sprintf( 'border-radius: %dpx;', get_attribute( $attributes, 'borderRadius', DEFAULT_BORDER_RADIUS_VALUE ) );
537    $submit_button_styles .= $style;
538    $email_field_styles   .= $style;
539
540    $style                 = sprintf( 'border-width: %dpx;', get_attribute( $attributes, 'borderWeight', DEFAULT_BORDER_WEIGHT_VALUE ) );
541    $submit_button_styles .= $style;
542    $email_field_styles   .= $style;
543
544    if ( has_attribute( $attributes, 'customBorderColor' ) ) {
545        $style = sprintf( 'border-color: %s; border-style: solid;', get_attribute( $attributes, 'customBorderColor' ) );
546
547        $submit_button_styles .= $style;
548        $email_field_styles   .= $style;
549    }
550
551    if ( ! Request::is_frontend() ) {
552        $background_color_style = get_attribute_color( 'buttonBackgroundColor', $attributes, '#113AF5' /* default lettre theme color */ );
553        $text_color_style       = get_attribute_color( 'textColor', $attributes, '#FFFFFF' );
554        $submit_button_styles  .= sprintf( ' background-color: %s; color: %s;', $background_color_style, $text_color_style );
555    }
556
557    return array(
558        'email_field'           => $email_field_styles,
559        'submit_button'         => $submit_button_styles,
560        'submit_button_wrapper' => $submit_button_wrapper_styles,
561    );
562}
563
564/**
565 * Retrieve the resolved color for a given attribute.
566 *
567 * @param string $attribute_name The name of the attribute to resolve.
568 * @param array  $attributes     An array of all attributes.
569 * @param string $default_color  A fallback color in case no color can be resolved.
570 *
571 * @return string Returns the resolved color or the default color if no color is found.
572 */
573function get_attribute_color( $attribute_name, $attributes, $default_color ) {
574    if ( has_attribute( $attributes, $attribute_name ) ) {
575        $color_slug     = get_attribute( $attributes, $attribute_name );
576        $resolved_color = get_color_from_slug( $color_slug );
577
578        if ( $resolved_color ) {
579            return $resolved_color;
580        }
581    }
582
583    return get_global_style_color( $attribute_name, $default_color );
584}
585
586/**
587 * Retrieve the global style color based on a provided style key.
588 *
589 * @param string $style_key     The key for the desired style.
590 * @param string $default_color A fallback color in case the global style is not set.
591 *
592 * @return string Returns the color defined in global styles or the default color if not defined.
593 */
594function get_global_style_color( $style_key, $default_color ) {
595    $global_styles = wp_get_global_styles(
596        array( 'color' ),
597        array(
598            'block_name' => 'core/button',
599            'transforms' => array( 'resolve-variables' ),
600        )
601    );
602
603    if ( isset( $global_styles[ $style_key ] ) ) {
604        return $global_styles[ $style_key ];
605    }
606
607    return $default_color;
608}
609
610/**
611 * Convert a color slug into its corresponding color value.
612 *
613 * @param string $slug The slug representation of the color.
614 *
615 * @return string|null Returns the color value if found, or null otherwise.
616 */
617function get_color_from_slug( $slug ) {
618    $color_palettes = wp_get_global_settings( array( 'color', 'palette' ) );
619
620    if ( ! is_array( $color_palettes ) ) {
621        return null;
622    }
623
624    foreach ( $color_palettes as $palette ) {
625        if ( is_array( $palette ) ) {
626            foreach ( $palette as $color ) {
627                if ( isset( $color['slug'] ) && $color['slug'] === $slug && isset( $color['color'] ) ) {
628                    return $color['color'];
629                }
630            }
631        }
632    }
633
634    return null;
635}
636
637/**
638 * Is the Jetpack_Memberships class loaded.
639 */
640function is_jetpack_memberships_loaded(): bool {
641    return class_exists( '\Jetpack_Memberships' );
642}
643
644/**
645 * Subscriptions block render callback.
646 *
647 * @param array $attributes Array containing the block attributes.
648 *
649 * @return string
650 */
651function render_block( $attributes ) {
652    // If the Subscriptions module is not active, don't render the block.
653    if ( ! ( new Modules() )->is_active( 'subscriptions' ) ) {
654        return '';
655    }
656
657    if ( is_jetpack_memberships_loaded() ) {
658        // We only want the sites that have newsletter feature enabled to be graced by this JavaScript.
659        Jetpack_Gutenberg::load_assets_as_required( __DIR__ );
660    } else {
661        Jetpack_Gutenberg::load_styles_as_required( FEATURE_NAME );
662    }
663
664    if ( ! class_exists( 'Jetpack_Subscriptions_Widget' ) ) {
665        return '';
666    }
667
668    // Prefill the email field with the current user's email if they are logged in via Memberships premium content token
669    $subscribe_email = Jetpack_Memberships::get_current_user_email();
670
671    // If no email, then prefill the email field with the current user's email if they are logged in
672    if ( empty( $subscribe_email ) ) {
673        $current_user = wp_get_current_user();
674        if ( ! empty( $current_user->user_email ) ) {
675            $subscribe_email = $current_user->user_email;
676        }
677    }
678
679    // The block is using the Jetpack_Subscriptions_Widget backend, hence the need to increase the instance count.
680    ++Jetpack_Subscriptions_Widget::$instance_count;
681
682    $classes = get_element_class_names_from_attributes( $attributes );
683    $styles  = get_element_styles_from_attributes( $attributes );
684
685    // The default value was previously "true" in block.json. We don't want to rely setting "default" in block.json to falsy,
686    // because it would change the setting for previously saved blocks. Block editor doesn't store default values in attributes at all.
687    // Hence users without this set will still get social counts included in the subscriber counter.
688    // Lowering the subscriber count on their behalf with code change would be controversial.
689    // We want to disencourage including social count as it's misleading.
690    $include_social_followers = isset( $attributes['includeSocialFollowers'] ) ? (bool) get_attribute( $attributes, 'includeSocialFollowers' ) : true;
691
692    $data = array(
693        'widget_id'                         => Jetpack_Subscriptions_Widget::$instance_count,
694        'subscribe_email'                   => $subscribe_email,
695        'is_paid_subscriber'                => get_attribute( $attributes, 'isPaidSubscriber', false ),
696        'wrapper_attributes'                => get_block_wrapper_attributes(
697            array(
698                'class' => $classes['block_wrapper'],
699            )
700        ),
701        'subscribe_placeholder'             => get_attribute( $attributes, 'subscribePlaceholder', __( 'Type your email…', 'jetpack' ) ),
702        'submit_button_text'                => get_attribute( $attributes, 'submitButtonText', __( 'Subscribe', 'jetpack' ) ),
703        'submit_button_text_subscribed'     => get_attribute( $attributes, 'submitButtonTextSubscribed', __( 'Subscribed', 'jetpack' ) ),
704        'submit_button_text_upgrade'        => get_attribute( $attributes, 'submitButtonTextUpgrade', __( 'Upgrade subscription', 'jetpack' ) ),
705        'success_message'                   => get_attribute(
706            $attributes,
707            'successMessage',
708            esc_html__( "Success! An email was just sent to confirm your subscription. Please find the email now and click 'Confirm' to start subscribing.", 'jetpack' )
709        ),
710        'show_subscribers_total'            => (bool) get_attribute( $attributes, 'showSubscribersTotal' ),
711        'subscribers_total'                 => get_attribute( $attributes, 'showSubscribersTotal' ) ? get_subscriber_count( $include_social_followers ) : 0,
712        'referer'                           => esc_url_raw(
713            ( is_ssl() ? 'https' : 'http' ) . '://' . ( isset( $_SERVER['HTTP_HOST'] ) ? wp_unslash( $_SERVER['HTTP_HOST'] ) : '' ) .
714            ( isset( $_SERVER['REQUEST_URI'] ) ? wp_unslash( $_SERVER['REQUEST_URI'] ) : '' )
715        ),
716        'source'                            => 'subscribe-block',
717        'app_source'                        => get_attribute( $attributes, 'appSource', null ),
718        'class_name'                        => get_attribute( $attributes, 'className' ),
719        'selected_newsletter_categories'    => get_attribute( $attributes, 'selectedNewsletterCategoryIds', array() ),
720        'preselected_newsletter_categories' => get_attribute( $attributes, 'preselectNewsletterCategories', false ),
721    );
722
723    // Only render the email version in non-frontend contexts.
724    if ( is_feed() || wp_is_xml_request() ||
725        ( defined( 'REST_REQUEST' ) && REST_REQUEST && ! wp_is_json_request() ) ||
726        ( defined( 'REST_API_REQUEST' ) && REST_API_REQUEST ) ||
727        ( defined( 'WP_CLI' ) && WP_CLI ) ||
728        wp_is_jsonp_request() ) {
729        return render_for_email( $data, $styles );
730    }
731
732    return render_for_website( $data, $classes, $styles );
733}
734
735/**
736 *  Get the post access level for the current post. Defaults to 'everybody' if the query is not for a single post
737 *
738 * @return string the actual post access level (see projects/plugins/jetpack/extensions/blocks/subscriptions/constants.js for the values).
739 */
740function get_post_access_level_for_current_post() {
741    if ( ! is_singular() ) {
742        // There is no "actual" current post.
743        return Abstract_Token_Subscription_Service::POST_ACCESS_LEVEL_EVERYBODY;
744    }
745
746    return Jetpack_Memberships::get_post_access_level();
747}
748
749/**
750 * Renders the subscriptions block at the site.
751 *
752 * @param array $data    Array containing block view data.
753 * @param array $classes Array containing the classes for different block elements.
754 * @param array $styles  Array containing the styles for different block elements.
755 *
756 * @return string
757 */
758function render_for_website( $data, $classes, $styles ) {
759    $lang                 = get_locale();
760    $blog_id              = \Jetpack_Options::get_option( 'id' );
761    $widget_id_suffix     = Jetpack_Subscriptions_Widget::$instance_count > 1 ? '-' . Jetpack_Subscriptions_Widget::$instance_count : '';
762    $form_id              = 'subscribe-blog' . $widget_id_suffix;
763    $form_url             = 'https://wordpress.com/email-subscriptions';
764    $post_access_level    = get_post_access_level_for_current_post();
765    $is_button_only_style = ! empty( $data['class_name'] ) ? is_button_only_style( $data['class_name'] ) : false;
766
767    // Post ID is used for pulling post-specific paid status, and returning to the right post after confirming subscription
768    $post_id = null;
769    if ( in_the_loop() ) {
770        $post_id = get_the_ID();
771    } elseif ( is_singular( 'post' ) || is_page() ) {
772        $post_id = get_queried_object_id();
773    } else {
774        $post_id = get_option( 'page_on_front' );
775    }
776
777    $subscribe_field_id    = apply_filters( 'subscribe_field_id', 'subscribe-field' . $widget_id_suffix, $data['widget_id'] );
778    $tier_id               = get_post_meta( $post_id, META_NAME_FOR_POST_TIER_ID_SETTINGS, true );
779    $is_subscribed         = Jetpack_Memberships::is_current_user_subscribed();
780    $button_text           = get_submit_button_text( $data );
781    $show_subscriber_count = $data['show_subscribers_total'] && $data['subscribers_total'] && ! $is_subscribed;
782
783    ob_start();
784
785    Jetpack_Subscriptions_Widget::render_widget_status_messages(
786        array(
787            'success_message' => $data['success_message'],
788        )
789    );
790    ?>
791    <div <?php echo wp_kses_data( $data['wrapper_attributes'] ); ?>>
792        <div class="wp-block-jetpack-subscriptions__container<?php echo ! $is_subscribed ? ' is-not-subscriber' : ''; ?>">
793            <?php if ( is_top_subscription() ) : ?>
794                <p id="subscribe-submit" class="is-link"
795                    <?php if ( ! empty( $styles['submit_button_wrapper'] ) ) : ?>
796                        style="<?php echo esc_attr( $styles['submit_button_wrapper'] ); ?>"
797                    <?php endif; ?>
798                >
799                        <a
800                            href="<?php echo esc_url( 'https://wordpress.com/reader/site/subscription/' . $blog_id ); ?>"
801                            <?php if ( ! empty( $classes['submit_button'] ) ) : ?>
802                                class="<?php echo esc_attr( $classes['submit_button'] ); ?>"
803                            <?php endif; ?>
804                            <?php if ( ! empty( $styles['submit_button'] ) ) : ?>
805                                style="<?php echo esc_attr( $styles['submit_button'] ); ?>"
806                            <?php endif; ?>
807                        >
808                            <?php echo sanitize_submit_text( $button_text ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>
809                        </a>
810                </p>
811            <?php else : ?>
812                <form
813                    action="<?php echo esc_url( $form_url ); ?>"
814                    method="post"
815                    accept-charset="utf-8"
816                    data-blog="<?php echo esc_attr( $blog_id ); ?>"
817                    data-post_access_level="<?php echo esc_attr( $post_access_level ); ?>"
818                    data-subscriber_email="<?php echo esc_attr( $data['subscribe_email'] ); ?>"
819                    id="<?php echo esc_attr( $form_id ); ?>"
820                >
821                    <div class="wp-block-jetpack-subscriptions__form-elements">
822                        <?php if ( ! $is_subscribed && ! $is_button_only_style ) : ?>
823                        <p id="subscribe-email">
824                            <label
825                                id="<?php echo esc_attr( $subscribe_field_id . '-label' ); ?>"
826                                for="<?php echo esc_attr( $subscribe_field_id ); ?>"
827                                class="screen-reader-text"
828                            >
829                                <?php echo esc_html( $data['subscribe_placeholder'] ); ?>
830                            </label>
831                            <?php
832                            printf(
833                                '<input
834                                    required="required"
835                                    type="email"
836                                    name="email"
837                                    autocomplete="email"
838                                    %1$s
839                                    style="%2$s"
840                                    placeholder="%3$s"
841                                    value="%4$s"
842                                    id="%5$s"
843                                    %6$s
844                                />',
845                                ( ! empty( $classes['email_field'] )
846                                    ? 'class="' . esc_attr( $classes['email_field'] ) . '"'
847                                    : ''
848                                ),
849                                ( ! empty( $styles['email_field'] )
850                                    ? esc_attr( $styles['email_field'] )
851                                    : 'width: 95%; padding: 1px 10px'
852                                ),
853                                esc_attr( $data['subscribe_placeholder'] ),
854                                esc_attr( $data['subscribe_email'] ),
855                                esc_attr( $subscribe_field_id ),
856                                ( ! empty( $data['subscribe_email'] )
857                                    ? 'disabled title="' . esc_attr__( "You're logged in with this email", 'jetpack' ) . '"'
858                                    : 'title="' . esc_attr__( 'Please fill in this field.', 'jetpack' ) . '"'
859                                )
860                            );
861                            ?>
862                        </p>
863                        <?php endif; ?>
864                        <p id="subscribe-submit"
865                            <?php if ( ! empty( $styles['submit_button_wrapper'] ) ) : ?>
866                                style="<?php echo esc_attr( $styles['submit_button_wrapper'] ); ?>"
867                            <?php endif; ?>
868                        >
869                            <input type="hidden" name="action" value="subscribe"/>
870                            <input type="hidden" name="blog_id" value="<?php echo (int) $blog_id; ?>"/>
871                            <input type="hidden" name="source" value="<?php echo esc_url( $data['referer'] ); ?>"/>
872                            <input type="hidden" name="sub-type" value="<?php echo esc_attr( $data['source'] ); ?>"/>
873                            <input type="hidden" name="app_source" value="<?php echo esc_attr( $data['app_source'] ); ?>"/>
874                            <input type="hidden" name="redirect_fragment" value="<?php echo esc_attr( $form_id ); ?>"/>
875                            <input type="hidden" name="lang" value="<?php echo esc_attr( $lang ); ?>"/>
876                            <?php
877                            wp_nonce_field( 'blogsub_subscribe_' . $blog_id );
878
879                            if ( ! empty( $post_id ) ) {
880                                echo '<input type="hidden" name="post_id" value="' . esc_attr( $post_id ) . '"/>';
881                            }
882
883                            if ( ! empty( $tier_id ) ) {
884                                echo '<input type="hidden" name="tier_id" value="' . esc_attr( $tier_id ) . '"/>';
885                            }
886
887                            if ( $data['preselected_newsletter_categories'] && ! empty( $data['selected_newsletter_categories'] ) ) {
888                                echo '<input type="hidden" name="selected_newsletter_categories" value="' . esc_attr( implode( ',', $data['selected_newsletter_categories'] ) ) . '"/>';
889                            }
890                            ?>
891                            <button type="submit"
892                                <?php if ( ! empty( $classes['submit_button'] ) ) : ?>
893                                    class="<?php echo esc_attr( $classes['submit_button'] ); ?>"
894                                <?php endif; ?>
895                                <?php if ( ! empty( $styles['submit_button'] ) ) : ?>
896                                    style="<?php echo esc_attr( $styles['submit_button'] ); ?>"
897                                <?php endif; ?>
898                                name="jetpack_subscriptions_widget"
899                            >
900                                <?php echo sanitize_submit_text( $button_text ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>
901                            </button>
902                        </p>
903                    </div>
904                </form>
905            <?php endif; ?>
906            <?php if ( $show_subscriber_count ) : ?>
907                <div class="wp-block-jetpack-subscriptions__subscount">
908                    <?php echo esc_html( Jetpack_Memberships::get_join_others_text( $data['subscribers_total'] ) ); ?>
909                </div>
910            <?php endif; ?>
911        </div>
912    </div>
913    <?php
914    return ob_get_clean();
915}
916
917/**
918 * Renders the email version of the subscriptions block.
919 *
920 * @param array $data    Array containing block view data.
921 * @param array $styles  Array containing the styles for different block elements.
922 *
923 * @return string
924 */
925function render_for_email( $data, $styles ) {
926    $submit_button_wrapper_style = ! empty( $styles['submit_button_wrapper'] ) ? 'style="' . esc_attr( $styles['submit_button_wrapper'] ) . '"' : '';
927    $button_text                 = get_submit_button_text( $data );
928
929    $html = '<div ' . wp_kses_data( $data['wrapper_attributes'] ) . '>
930        <div>
931            <div>
932                <div>
933                    <p ' . $submit_button_wrapper_style . '>
934                        <a href="' . esc_url( get_post_permalink() ) . '" style="' . esc_attr( $styles['submit_button'] ) . ' text-decoration: none; white-space: nowrap; margin-left: 0">' . sanitize_submit_text( $button_text ) . '</a>
935                    </p>
936                </div>
937            </div>
938        </div>
939    </div>';
940
941    return $html;
942}
943
944/**
945 * WooCommerce Email Editor render callback for the subscriptions block.
946 *
947 * @param string $block_content The block content.
948 * @param array  $parsed_block  The parsed block data.
949 * @param object $rendering_context The email rendering context.
950 *
951 * @return string
952 */
953function render_email( $block_content, array $parsed_block, $rendering_context ) {
954    if ( ! isset( $parsed_block['attrs'] ) || ! is_array( $parsed_block['attrs'] ) || ! function_exists( '\Automattic\Jetpack\Extensions\Button\render_email' ) || ! class_exists( '\Automattic\WooCommerce\EmailEditor\Integrations\Core\Renderer\Blocks\Button' ) ) {
955        return '';
956    }
957
958    // Map subscription block attributes to button block attributes
959    $button_attributes = array(
960        'text'                  => ! empty( $parsed_block['attrs']['submitButtonText'] ) ? sanitize_text_field( $parsed_block['attrs']['submitButtonText'] ) : __( 'Subscribe', 'jetpack' ),
961        'url'                   => get_post_permalink(),
962        'element'               => 'a',
963        // Map background colors
964        'backgroundColor'       => $parsed_block['attrs']['buttonBackgroundColor'] ?? null,
965        'customBackgroundColor' => $parsed_block['attrs']['customButtonBackgroundColor'] ?? null,
966        // Map text colors
967        'textColor'             => $parsed_block['attrs']['textColor'] ?? null,
968        'customTextColor'       => $parsed_block['attrs']['customTextColor'] ?? null,
969        // Map borders
970        'borderRadius'          => $parsed_block['attrs']['borderRadius'] ?? 0,
971        'borderWeight'          => $parsed_block['attrs']['borderWeight'] ?? 1,
972        'borderColor'           => $parsed_block['attrs']['borderColor'] ?? null,
973        'customBorderColor'     => $parsed_block['attrs']['customBorderColor'] ?? null,
974        // Map typography
975        'fontSize'              => $parsed_block['attrs']['fontSize'] ?? null,
976        'customFontSize'        => $parsed_block['attrs']['customFontSize'] ?? null,
977        // Map spacing
978        'padding'               => $parsed_block['attrs']['padding'] ?? null,
979    );
980
981    // Create a mock button block structure
982    $button_parsed_block = array(
983        'attrs'       => $button_attributes,
984        'email_attrs' => $parsed_block['email_attrs'] ?? array(),
985    );
986
987    // Call the Jetpack button's email rendering
988    return \Automattic\Jetpack\Extensions\Button\render_email(
989        $block_content,
990        $button_parsed_block,
991        $rendering_context
992    );
993}
994
995/**
996 * Gate access to posts
997 *
998 * @param string $the_content Post content.
999 *
1000 * @return string
1001 */
1002function add_paywall( $the_content ) {
1003    require_once JETPACK__PLUGIN_DIR . 'modules/memberships/class-jetpack-memberships.php';
1004
1005    $post_access_level = Jetpack_Memberships::get_post_access_level();
1006
1007    if ( Jetpack_Memberships::user_can_view_post() ) {
1008        if ( $post_access_level !== Abstract_Token_Subscription_Service::POST_ACCESS_LEVEL_EVERYBODY ) {
1009            do_action(
1010                'earn_track_paywalled_post_view',
1011                array(
1012                    'post_id' => get_the_ID(),
1013                )
1014            );
1015        }
1016        return $the_content;
1017    }
1018
1019    $paywalled_content = get_paywall_content();
1020
1021    if ( has_block( \Automattic\Jetpack\Extensions\Paywall\BLOCK_NAME ) ) {
1022        if ( strpos( $the_content, \Automattic\Jetpack\Extensions\Paywall\BLOCK_HTML ) ) {
1023            return strstr( $the_content, \Automattic\Jetpack\Extensions\Paywall\BLOCK_HTML, true ) . $paywalled_content;
1024        }
1025        // WordPress generates excerpts by either rendering or stripping blocks before invoking the `the_content` filter.
1026        // In the context of generating an excerpt, the Paywall block specifically renders THE_EXCERPT_BLOCK.
1027        if ( strpos( $the_content, \Automattic\Jetpack\Extensions\Paywall\THE_EXCERPT_BLOCK ) ) {
1028            return strstr( $the_content, \Automattic\Jetpack\Extensions\Paywall\THE_EXCERPT_BLOCK, true );
1029        }
1030    }
1031
1032    return $paywalled_content;
1033}
1034
1035/**
1036 * Gate access to comments. We want to close comments on private sites.
1037 *
1038 * @param bool $default_comments_open Default state of the comments_open filter.
1039 * @param int  $post_id Current post id.
1040 *
1041 * @return bool
1042 */
1043function maybe_close_comments( $default_comments_open, $post_id ) {
1044    if ( ! $default_comments_open || ! $post_id ) {
1045        return $default_comments_open;
1046    }
1047
1048    require_once JETPACK__PLUGIN_DIR . 'modules/memberships/class-jetpack-memberships.php';
1049    return Jetpack_Memberships::user_can_view_post();
1050}
1051
1052/**
1053 * Gate access to existing comments
1054 *
1055 * @param string $comment The comment.
1056 *
1057 * @return string
1058 */
1059function maybe_gate_existing_comments( $comment ) {
1060    if ( empty( $comment ) ) {
1061        return $comment;
1062    }
1063
1064    require_once JETPACK__PLUGIN_DIR . 'modules/memberships/class-jetpack-memberships.php';
1065    if ( Jetpack_Memberships::user_can_view_post() ) {
1066        return $comment;
1067    }
1068    return '';
1069}
1070
1071/**
1072 * Is the Jetpack_Token_Subscription_Service class loaded
1073 *
1074 * @return bool
1075 */
1076function is_jetpack_token_subscription_service_loaded(): bool {
1077    return class_exists( 'Automattic\Jetpack\Extensions\Premium_Content\Subscription_Service\Jetpack_Token_Subscription_Service' );
1078}
1079
1080/**
1081 * Adds support for WP Super cache and Boost cache
1082 */
1083function maybe_prevent_super_cache_caching() {
1084    // Prevents cached page to be served if the Membership cookie is present
1085    if ( is_jetpack_token_subscription_service_loaded() ) {
1086        do_action( 'wpsc_add_cookie', Jetpack_Token_Subscription_Service::JWT_AUTH_TOKEN_COOKIE_NAME );
1087    }
1088
1089    if ( is_user_auth() ) {
1090        // Do not cache the page if user is auth with Membership token
1091        if ( ! defined( 'DONOTCACHEPAGE' ) ) {
1092            define( 'DONOTCACHEPAGE', true );
1093        }
1094    }
1095}
1096
1097/**
1098 * Returns paywall content blocks
1099 *
1100 * @return string
1101 */
1102function get_paywall_content() {
1103    if ( Jetpack_Memberships::user_is_pending_subscriber() ) {
1104        return get_paywall_blocks_subscribe_pending();
1105    }
1106    if ( doing_filter( 'get_the_excerpt' ) ) {
1107        return '';
1108    }
1109    return get_paywall_blocks();
1110}
1111
1112/**
1113 * Returns the current URL.
1114 *
1115 * TODO: Copied from https://github.com/Automattic/jetpack/blob/bb885061dc3ee7a80a78a5f0116ab3fcebfddb09/projects/packages/boost-core/src/lib/class-url.php#L39
1116 * TODO: Move to a shared package
1117 *
1118 * @return string
1119 */
1120function get_current_url() {
1121    // Fallback to the site URL if we're unable to determine the URL from $_SERVER global.
1122    $current_url = site_url();
1123
1124    if ( isset( $_SERVER ) && is_array( $_SERVER ) ) {
1125        // phpcs:disable WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- Sanitization happens at the end
1126        $scheme = isset( $_SERVER['HTTPS'] ) && 'on' === $_SERVER['HTTPS'] ? 'https' : 'http';
1127        $host   = ! empty( $_SERVER['HTTP_HOST'] ) ? wp_unslash( $_SERVER['HTTP_HOST'] ) : null;
1128        $path   = ! empty( $_SERVER['REQUEST_URI'] ) ? wp_unslash( $_SERVER['REQUEST_URI'] ) : '';
1129
1130        // Support for local plugin development and testing using ngrok.
1131        if ( ! empty( $_SERVER['HTTP_X_ORIGINAL_HOST'] ) && str_contains( $_SERVER['HTTP_X_ORIGINAL_HOST'], 'ngrok.io' ) ) { // phpcs:ignore WordPress.Security.ValidatedSanitizedInput -- This is validating.
1132            $host = wp_unslash( $_SERVER['HTTP_X_ORIGINAL_HOST'] );
1133        }
1134        // phpcs:enable WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
1135
1136        if ( $host ) {
1137            $current_url = esc_url_raw( sprintf( '%s://%s%s', $scheme, $host, $path ) );
1138        }
1139    }
1140
1141    return $current_url;
1142}
1143
1144/**
1145 * Get the submit button text based on the subscription status.
1146 *
1147 * @param array $data Array containing block view data.
1148 *
1149 * @return string
1150 */
1151function get_submit_button_text( $data ) {
1152    if ( ! Jetpack_Memberships::is_current_user_subscribed() ) {
1153        return $data['submit_button_text'];
1154    }
1155    if ( ! Jetpack_Memberships::user_can_view_post() ) {
1156        return $data['submit_button_text_upgrade'];
1157    }
1158    return '✓ ' . $data['submit_button_text_subscribed'];
1159}
1160
1161/**
1162 * Returns true if there are no more tiers to upgrade to.
1163 *
1164 * @return boolean
1165 */
1166function is_top_subscription() {
1167    if ( ! Jetpack_Memberships::is_current_user_subscribed() ) {
1168        return false;
1169    }
1170    if ( ! Jetpack_Memberships::user_can_view_post() ) {
1171        return false;
1172    }
1173    return true;
1174}
1175
1176/**
1177 * Sanitize the submit button text.
1178 *
1179 * @param string $text String containing the submit button text.
1180 *
1181 * @return string
1182 */
1183function sanitize_submit_text( $text ) {
1184    return wp_kses(
1185        html_entity_decode( $text, ENT_QUOTES | ENT_SUBSTITUTE | ENT_HTML401 ),
1186        Jetpack_Subscriptions_Widget::$allowed_html_tags_for_submit_button
1187    );
1188}
1189
1190/**
1191 * Returns paywall content blocks if user is not authenticated
1192 *
1193 * @return string
1194 */
1195function get_paywall_blocks() {
1196    $custom_paywall = apply_filters( 'jetpack_custom_paywall_blocks', false );
1197    if ( ! empty( $custom_paywall ) ) {
1198        return $custom_paywall;
1199    }
1200
1201    if ( ! Request::is_frontend() ) { // emails
1202        return get_paywall_simple();
1203    }
1204
1205    require_once JETPACK__PLUGIN_DIR . 'modules/memberships/class-jetpack-memberships.php';
1206    $is_paid_post       = is_paid_post();
1207    $is_paid_subscriber = Jetpack_Memberships::user_is_paid_subscriber();
1208
1209    $access_heading = $is_paid_subscriber
1210        ? esc_html__( 'Upgrade to continue reading', 'jetpack' )
1211        : esc_html__( 'Subscribe to continue reading', 'jetpack' );
1212
1213    $subscribe_text = $is_paid_post
1214        // translators: %s is the name of the site.
1215        ? (
1216            $is_paid_subscriber
1217                ? esc_html__( 'Upgrade to get access to the rest of this post and other exclusive content.', 'jetpack' )
1218                : esc_html__( 'Become a paid subscriber to get access to the rest of this post and other exclusive content.', 'jetpack' )
1219        )
1220        // translators: %s is the name of the site.
1221        : esc_html__( 'Subscribe to get access to the rest of this post and other subscriber-only content.', 'jetpack' );
1222
1223    $login_block = '';
1224
1225    if ( is_user_auth() ) {
1226        if ( ( new Host() )->is_wpcom_simple() ) {
1227            // We cannot use wpcom_logmein_redirect_url since it returns redirect URL when user is already logged in.
1228            $login_link           = add_query_arg(
1229                array(
1230                    'redirect_to' => rawurlencode( get_current_url() ),
1231                    'blog_id'     => get_current_blog_id(),
1232                ),
1233                'https://wordpress.com/log-in/link'
1234            );
1235            $switch_accounts_link = wp_logout_url( $login_link );
1236            $login_block          = '<!-- wp:paragraph {"align":"center","style":{"typography":{"fontSize":"14px"}}} -->
1237<p class="has-text-align-center" style="font-size:14px">
1238    <a href="' . $switch_accounts_link . '">' . __( 'Switch accounts', 'jetpack' ) . '</a>
1239</p>
1240<!-- /wp:paragraph -->';
1241        }
1242    } else {
1243        $access_question = $is_paid_post ? esc_html__( 'Already a paid subscriber?', 'jetpack' ) : esc_html__( 'Already a subscriber?', 'jetpack' );
1244        $login_block     = '<!-- wp:group {"style":{"typography":{"fontSize":"14px"}},"layout":{"type":"flex","justifyContent":"center"}} -->
1245<div class="wp-block-group" style="font-size:14px">
1246    <!-- wp:jetpack/subscriber-login {"logInLabel":"' . $access_question . '"} /-->
1247</div>
1248<!-- /wp:group -->';
1249    }
1250
1251    $lock_svg = plugins_url( 'images/lock-paywall.svg', JETPACK__PLUGIN_FILE );
1252
1253    return '
1254<!-- wp:group {"style":{"border":{"width":"1px","radius":"4px"},"spacing":{"padding":{"top":"32px","bottom":"32px","left":"32px","right":"32px"}}},"borderColor":"primary","className":"jetpack-subscribe-paywall","layout":{"type":"constrained","contentSize":"400px"}} -->
1255<div class="wp-block-group jetpack-subscribe-paywall has-border-color has-primary-border-color" style="border-width:1px;border-radius:4px;padding-top:32px;padding-right:32px;padding-bottom:32px;padding-left:32px">
1256<!-- wp:image {"align":"center","width":24,"height":24,"sizeSlug":"large","linkDestination":"none"} -->
1257<figure class="wp-block-image aligncenter size-large is-resized"><img src="' . $lock_svg . '" alt="" width="24" height="24"/></figure>
1258<!-- /wp:image -->
1259
1260<!-- wp:heading {"textAlign":"center","style":{"typography":{"fontStyle":"normal","fontWeight":"600","fontSize":"24px"},"layout":{"selfStretch":"fit"}}} -->
1261<h2 class="wp-block-heading has-text-align-center" style="font-size:24px;font-style:normal;font-weight:600">' . $access_heading . '</h2>
1262<!-- /wp:heading -->
1263
1264<!-- wp:paragraph {"align":"center","style":{"typography":{"fontSize":"14px"},"spacing":{"margin":{"top":"10px","bottom":"10px"}}}} -->
1265<p class="has-text-align-center" style="margin-top:10px;margin-bottom:10px;font-size:14px">' . $subscribe_text . '</p>
1266<!-- /wp:paragraph -->
1267
1268<!-- wp:jetpack/subscriptions {"borderRadius":50,"borderColor":"primary","className":"is-style-compact","isPaidSubscriber":' . ( $is_paid_subscriber ? 'true' : 'false' ) . '} /-->
1269' . $login_block . '
1270</div>
1271<!-- /wp:group -->
1272';
1273}
1274
1275/**
1276 * Returns true if user is auth for subscriptions check, otherwise returns false.
1277 *
1278 * @return bool
1279 */
1280function is_user_auth(): bool {
1281    if ( ( new Host() )->is_wpcom_simple() && is_user_logged_in() ) {
1282        return true;
1283    }
1284    if ( current_user_can( 'manage_options' ) ) {
1285        return true;
1286    }
1287
1288    if ( is_jetpack_token_subscription_service_loaded() ) {
1289        if ( Jetpack_Token_Subscription_Service::has_token_from_cookie() ) {
1290            return true;
1291        }
1292    }
1293    return false;
1294}
1295
1296/**
1297 * Returns `true` if the post is a paid post.
1298 */
1299function is_paid_post(): bool {
1300    require_once JETPACK__PLUGIN_DIR . 'modules/memberships/class-jetpack-memberships.php';
1301
1302    // Make sure Stripe is connected and the post is marked for paid subscribers.
1303    if ( Jetpack_Memberships::has_connected_account() && is_jetpack_token_subscription_service_loaded() ) {
1304        return Jetpack_Memberships::get_post_access_level() === Jetpack_Token_Subscription_Service::POST_ACCESS_LEVEL_PAID_SUBSCRIBERS;
1305    }
1306
1307    return false;
1308}
1309
1310/**
1311 * Returns true if the post is a subscribers post.
1312 */
1313function is_subscribers_post(): bool {
1314    require_once JETPACK__PLUGIN_DIR . 'modules/memberships/class-jetpack-memberships.php';
1315
1316    // Make sure Stripe is connected and the post is marked for paid subscribers.
1317    if ( Jetpack_Memberships::has_connected_account() && is_jetpack_token_subscription_service_loaded() ) {
1318        return Jetpack_Memberships::get_post_access_level() === Jetpack_Token_Subscription_Service::POST_ACCESS_LEVEL_SUBSCRIBERS;
1319    }
1320
1321    return false;
1322}
1323
1324/**
1325 * Returns paywall content blocks when email confirmation is pending
1326 *
1327 * @return string
1328 */
1329function get_paywall_blocks_subscribe_pending() {
1330    $subscribe_email = Jetpack_Memberships::get_current_user_email();
1331
1332    /** This filter is documented in \Automattic\Jetpack\Forms\ContactForm\Contact_Form */
1333    if ( is_wpcom() || false !== apply_filters( 'jetpack_auto_fill_logged_in_user', false ) ) {
1334        $current_user = wp_get_current_user();
1335        if ( ! empty( $current_user->user_email ) ) {
1336            $subscribe_email = $current_user->user_email;
1337        }
1338    }
1339
1340    $access_heading = esc_html__( 'Confirm your subscription to continue reading', 'jetpack' );
1341
1342    /* translators: %s: email address */
1343    $subscribe_text = sprintf( esc_html__( 'Head to your inbox and confirm your email address %s.', 'jetpack' ), $subscribe_email );
1344
1345    $lock_svg = plugins_url( 'images/lock-paywall.svg', JETPACK__PLUGIN_FILE );
1346
1347    return '
1348<!-- wp:group {"style":{"border":{"width":"1px","radius":"4px"},"spacing":{"padding":{"top":"32px","bottom":"32px","left":"32px","right":"32px"}}},"borderColor":"primary","className":"jetpack-subscribe-paywall","layout":{"type":"constrained","contentSize":"400px"}} -->
1349<div class="wp-block-group jetpack-subscribe-paywall has-border-color has-primary-border-color" style="border-width:1px;border-radius:4px;padding-top:32px;padding-right:32px;padding-bottom:32px;padding-left:32px">
1350<!-- wp:image {"align":"center","width":24,"height":24,"sizeSlug":"large","linkDestination":"none"} -->
1351<figure class="wp-block-image aligncenter size-large is-resized"><img src="' . $lock_svg . '" alt="" width="24" height="24"/></figure>
1352<!-- /wp:image -->
1353
1354<!-- wp:heading {"textAlign":"center","style":{"typography":{"fontStyle":"normal","fontWeight":"600","fontSize":"24px", "maxWidth":"initial"},"layout":{"selfStretch":"fit"}}} -->
1355<h2 class="wp-block-heading has-text-align-center" style="font-size:24px;font-style:normal;font-weight:600;max-width:initial">' . $access_heading . '</h2>
1356<!-- /wp:heading -->
1357
1358<!-- wp:paragraph {"align":"center","style":{"typography":{"fontSize":"14px"},"spacing":{"margin":{"top":"10px","bottom":"10px"}}}} -->
1359<p class="has-text-align-center" style="margin-top:10px;margin-bottom:10px;font-size:14px">' . $subscribe_text . '</p>
1360<!-- /wp:paragraph -->
1361</div>
1362<!-- /wp:group -->
1363';
1364}
1365
1366/**
1367 * Return content for non frontend views like Reader, emails.
1368 */
1369function get_paywall_simple(): string {
1370    $is_paid_post        = is_paid_post();
1371    $is_subscribers_post = is_subscribers_post();
1372    $is_subscriber       = is_jetpack_memberships_loaded() && Jetpack_Memberships::is_current_user_subscribed();
1373    $paywall_heading     = esc_html__( 'Subscribe to keep reading', 'jetpack' );
1374
1375    if ( $is_subscribers_post && ! $is_subscriber ) {
1376        $paywall_description = esc_html__( "It's a subscribers only post. Subscribe to get access to the rest of this post and other subscriber-only content.", 'jetpack' );
1377        $paywall_action_btn  = esc_html__( 'Subscribe', 'jetpack' );
1378    } elseif ( $is_paid_post && $is_subscriber ) {
1379        $paywall_description = esc_html__( "You're currently a free subscriber. Upgrade your subscription to get access to the rest of this post and other paid-subscriber only content.", 'jetpack' );
1380        $paywall_action_btn  = esc_html__( 'Upgrade subscription', 'jetpack' );
1381    } else {
1382        // - For paid post when the user is not a subscriber.
1383        // - Default for all other cases.
1384        $paywall_description = esc_html__( 'Become a paid subscriber to get access to the rest of this post and other exclusive content.', 'jetpack' );
1385        $paywall_action_btn  = esc_html__( 'Subscribe', 'jetpack' );
1386    }
1387
1388    return '
1389<!-- wp:columns -->
1390<div class="wp-block-columns jetpack-paywall-simple" style="display: inline-block; width: 90%">
1391    <!-- wp:column -->
1392    <div class="wp-block-column" style="background-color: #F6F7F7; padding: 32px; 24px;">
1393        <!-- wp:heading -->
1394        <h2 class="has-text-align-center" style="margin: 0 0 12px; font-weight: 600;">' . $paywall_heading . '</h2>
1395        <!-- /wp:heading -->
1396        <!-- wp:paragraph -->
1397        <p class="has-text-align-center"
1398           style="text-align: center;
1399                  color: #50575E;
1400                  font-weight: 400;
1401                  font-size: 16px;
1402                  font-family: \'SF Pro Text\', sans-serif;
1403                  line-height: 28.8px;">
1404        ' . $paywall_description . '
1405        </p>
1406        <!-- /wp:paragraph -->
1407        <!-- wp:buttons -->
1408        <div class="wp-block-buttons" style="text-align: center;">
1409            <!-- wp:button -->
1410            <div class="wp-block-button" style="display: inline-block; margin: 10px 0; border-style: none; padding: 0;">
1411                <a href="' . esc_url( get_post_permalink() ) . '" class="wp-block-button__link wp-element-button"
1412                   data-wpcom-track data-tracks-link-desc="paywall-email-click"
1413                   style="display: inline-block;
1414                          padding: 12px 15px;
1415                          background-color: #3858e9;
1416                          color: #FFFFFF;
1417                          text-decoration: none;
1418                          border-radius: 5px;
1419                          font-family: \'SF Pro Display\', sans-serif;
1420                          font-weight: 500;
1421                          font-size: 16px;
1422                          text-align: center;">' . $paywall_action_btn . '</a>
1423            </div>
1424            <!-- /wp:button -->
1425        </div>
1426        <!-- /wp:buttons -->
1427    </div>
1428    <!-- /wp:column -->
1429</div>
1430<!-- /wp:columns -->
1431';
1432}