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1<?php
2
3namespace Automattic\Jetpack_Boost\Modules;
4
5use Automattic\Jetpack_Boost\Contracts\Feature;
6use Automattic\Jetpack_Boost\Contracts\Sub_Feature;
7use Automattic\Jetpack_Boost\Modules\Image_Guide\Image_Guide;
8use Automattic\Jetpack_Boost\Modules\Optimizations\Cloud_CSS\Cloud_CSS;
9use Automattic\Jetpack_Boost\Modules\Optimizations\Critical_CSS\Critical_CSS;
10use Automattic\Jetpack_Boost\Modules\Optimizations\Image_CDN\Image_CDN;
11use Automattic\Jetpack_Boost\Modules\Optimizations\Image_CDN\Liar;
12use Automattic\Jetpack_Boost\Modules\Optimizations\Image_CDN\Quality_Settings;
13use Automattic\Jetpack_Boost\Modules\Optimizations\Lcp\Lcp;
14use Automattic\Jetpack_Boost\Modules\Optimizations\Minify\Minify_Common;
15use Automattic\Jetpack_Boost\Modules\Optimizations\Minify\Minify_CSS;
16use Automattic\Jetpack_Boost\Modules\Optimizations\Minify\Minify_JS;
17use Automattic\Jetpack_Boost\Modules\Optimizations\Page_Cache\Cache_Preload;
18use Automattic\Jetpack_Boost\Modules\Optimizations\Page_Cache\Page_Cache;
19use Automattic\Jetpack_Boost\Modules\Optimizations\Render_Blocking_JS\Render_Blocking_JS;
20use Automattic\Jetpack_Boost\Modules\Optimizations\Speculation_Rules\Speculation_Rules;
21use Automattic\Jetpack_Boost\Modules\Performance_History\Performance_History;
22
23class Features_Index {
24
25    /**
26     * @var class-string<Feature>[] - Classes that handle all Jetpack Boost features.
27     */
28    const FEATURES = array(
29        Critical_CSS::class,
30        Cloud_CSS::class,
31        Lcp::class,
32        Minify_JS::class,
33        Minify_CSS::class,
34        Render_Blocking_JS::class,
35        Image_Guide::class,
36        Image_CDN::class,
37        Performance_History::class,
38        Page_Cache::class,
39        Speculation_Rules::class,
40    );
41
42    /**
43     * @var class-string<Sub_Feature>[] - Classes that handle all Jetpack Boost subfeatures.
44     */
45    const SUB_FEATURES = array(
46        Minify_Common::class,
47        Liar::class,
48        Quality_Settings::class,
49        Cache_Preload::class,
50    );
51
52    /**
53     * Get all features and subfeatures.
54     *
55     * @return class-string<Feature>[]
56     */
57    public static function get_all_features() {
58        return array_merge( self::FEATURES, self::SUB_FEATURES );
59    }
60
61    /**
62     * Get the subfeatures of a feature.
63     *
64     * @param Feature $feature The feature to get the subfeatures of.
65     * @return class-string<Sub_Feature>[] The subfeatures of the feature.
66     */
67    public static function get_sub_features_of( Feature $feature ) {
68        /**
69         * @var class-string<Sub_Feature>[]
70         */
71        $subfeatures   = array();
72        $feature_class = get_class( $feature );
73        foreach ( self::SUB_FEATURES as $subfeature ) {
74            if ( in_array( $feature_class, $subfeature::get_parent_features(), true ) ) {
75                $subfeatures[] = $subfeature;
76            }
77        }
78        return $subfeatures;
79    }
80}