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1<?php
2
3namespace Automattic\Jetpack_Boost\Lib;
4
5use Automattic\Jetpack\Boost_Core\Lib\Boost_API;
6use Automattic\Jetpack\Boost_Core\Lib\Transient;
7
8class Premium_Features {
9
10    const CLOUD_CSS             = 'cloud-critical-css';
11    const PERFORMANCE_HISTORY   = 'performance-history';
12    const IMAGE_CDN_LIAR        = 'image-cdn-liar';
13    const IMAGE_CDN_QUALITY     = 'image-cdn-quality';
14    const PRIORITY_SUPPORT      = 'support';
15    const PAGE_CACHE            = 'page-cache';
16    const CORNERSTONE_TEN_PAGES = 'cornerstone-10-pages';
17
18    const TRANSIENT_KEY = 'premium_features';
19
20    public static function has_feature( $feature ) {
21        $features = self::get_features();
22
23        if ( is_array( $features ) ) {
24            return in_array( $feature, $features, true );
25        }
26        return false;
27    }
28
29    public static function get_features() {
30        $available_features = Transient::get( self::TRANSIENT_KEY, false );
31        $all_features       = array(
32            self::CLOUD_CSS,
33            self::IMAGE_CDN_LIAR,
34            self::IMAGE_CDN_QUALITY,
35            self::PERFORMANCE_HISTORY,
36            self::PRIORITY_SUPPORT,
37            self::CORNERSTONE_TEN_PAGES,
38        );
39
40        if ( ! is_array( $available_features ) ) {
41            $available_features = Boost_API::get( 'features' );
42            if ( ! is_array( $available_features ) ) {
43                $available_features = array();
44            }
45            Transient::set( self::TRANSIENT_KEY, $available_features, 3 * DAY_IN_SECONDS );
46        }
47
48        $features = array();
49        // Prepare a list of features after applying jetpack_boost_has_feature_* filter for each feature.
50        foreach ( $all_features as $feature ) {
51            /**
52             * Filter the availability of a feature
53             *
54             * @param bool $has_feature if the feature is available
55             *
56             * @since   1.0.0
57             */
58            if ( apply_filters( "jetpack_boost_has_feature_{$feature}", in_array( $feature, $available_features, true ) ) ) {
59                $features[] = $feature;
60            }
61        }
62
63        return $features;
64    }
65
66    public static function has_any() {
67        return count( self::get_features() ) > 0;
68    }
69
70    public static function clear_cache() {
71        Transient::delete( self::TRANSIENT_KEY );
72    }
73}