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1<?php
2
3namespace Automattic\Jetpack_Boost\Modules\Optimizations\Critical_CSS;
4
5use Automattic\Jetpack\Schema\Schema;
6use Automattic\Jetpack\WP_JS_Data_Sync\Data_Sync;
7use Automattic\Jetpack_Boost\Admin\Regenerate_Admin_Notice;
8use Automattic\Jetpack_Boost\Contracts\Changes_Output_After_Activation;
9use Automattic\Jetpack_Boost\Contracts\Feature;
10use Automattic\Jetpack_Boost\Contracts\Has_Data_Sync;
11use Automattic\Jetpack_Boost\Contracts\Needs_To_Be_Ready;
12use Automattic\Jetpack_Boost\Contracts\Optimization;
13use Automattic\Jetpack_Boost\Data_Sync\Critical_CSS_Meta_Entry;
14use Automattic\Jetpack_Boost\Lib\Critical_CSS\Critical_CSS_Invalidator;
15use Automattic\Jetpack_Boost\Lib\Critical_CSS\Critical_CSS_State;
16use Automattic\Jetpack_Boost\Lib\Critical_CSS\Critical_CSS_Storage;
17use Automattic\Jetpack_Boost\Lib\Critical_CSS\Data_Sync\Data_Sync_Schema;
18use Automattic\Jetpack_Boost\Lib\Critical_CSS\Data_Sync_Actions\Regenerate_CSS;
19use Automattic\Jetpack_Boost\Lib\Critical_CSS\Data_Sync_Actions\Set_Provider_CSS;
20use Automattic\Jetpack_Boost\Lib\Critical_CSS\Data_Sync_Actions\Set_Provider_Error_Dismissed;
21use Automattic\Jetpack_Boost\Lib\Critical_CSS\Data_Sync_Actions\Set_Provider_Errors;
22use Automattic\Jetpack_Boost\Lib\Critical_CSS\Display_Critical_CSS;
23use Automattic\Jetpack_Boost\Lib\Critical_CSS\Generator;
24use Automattic\Jetpack_Boost\Lib\Critical_CSS\Source_Providers\Source_Providers;
25use Automattic\Jetpack_Boost\Lib\Premium_Features;
26
27class Critical_CSS implements Feature, Changes_Output_After_Activation, Optimization, Has_Data_Sync, Needs_To_Be_Ready {
28
29    /**
30     * Critical CSS storage class instance.
31     *
32     * @var Critical_CSS_Storage
33     */
34    protected $storage;
35
36    /**
37     * Critical CSS Provider Paths.
38     *
39     * @var Source_Providers
40     */
41    protected $paths;
42
43    /**
44     * Prepare module. This is run irrespective of the module activation status.
45     */
46    public function __construct() {
47        $this->storage = new Critical_CSS_Storage();
48        $this->paths   = new Source_Providers();
49    }
50
51    /**
52     * Check if the module is ready and already serving critical CSS.
53     *
54     * @return bool
55     */
56    public function is_ready() {
57        return ( new Critical_CSS_State() )->is_generated();
58    }
59
60    /**
61     * Get the action names that will be triggered when the module is ready and serving critical CSS.
62     *
63     * @return string[]
64     */
65    public static function get_change_output_action_names() {
66        return array( 'jetpack_boost_critical_css_invalidated', 'jetpack_boost_critical_css_generated' );
67    }
68
69    public static function is_available() {
70        return true !== Premium_Features::has_feature( Premium_Features::CLOUD_CSS );
71    }
72
73    /**
74     * This is only run if Critical CSS module has been activated.
75     */
76    public function setup() {
77        add_action( 'wp', array( $this, 'display_critical_css' ) );
78        add_filter( 'jetpack_boost_total_problem_count', array( $this, 'update_total_problem_count' ) );
79
80        Generator::init();
81        Critical_CSS_Invalidator::init();
82        CSS_Proxy::init();
83
84        // Admin Notices
85        Regenerate_Admin_Notice::init();
86
87        return true;
88    }
89
90    public function register_data_sync( Data_Sync $instance ) {
91        $instance->register( 'critical_css_state', Data_Sync_Schema::critical_css_state() );
92        $instance->register( 'critical_css_meta', Data_Sync_Schema::critical_css_meta(), new Critical_CSS_Meta_Entry() );
93        $instance->register( 'critical_css_suggest_regenerate', Data_Sync_Schema::critical_css_suggest_regenerate() );
94        $instance->register_action( 'critical_css_state', 'request-regenerate', Schema::as_void(), new Regenerate_CSS() );
95        $instance->register_action( 'critical_css_state', 'set-provider-css', Data_Sync_Schema::critical_css_set_provider(), new Set_Provider_CSS() );
96        $instance->register_action( 'critical_css_state', 'set-provider-errors', Data_Sync_Schema::critical_css_set_provider_errors(), new Set_Provider_Errors() );
97        $instance->register_action( 'critical_css_state', 'set-provider-errors-dismissed', Data_Sync_Schema::critical_css_set_provider_errors_dismissed(), new Set_Provider_Error_Dismissed() );
98    }
99
100    public static function get_slug() {
101        return 'critical_css';
102    }
103
104    public function display_critical_css() {
105        // Don't look for Critical CSS in the dashboard.
106        if ( is_admin() ) {
107            return;
108        }
109        // Don't display Critical CSS when generating Critical CSS.
110        if ( Generator::is_generating_critical_css() ) {
111            return;
112        }
113
114        // Don't show Critical CSS in customizer previews.
115        if ( is_customize_preview() ) {
116            return;
117        }
118
119        // Get the Critical CSS to show.
120        $critical_css = $this->paths->get_current_request_css();
121        if ( ! $critical_css ) {
122            return;
123        }
124
125        $display = new Display_Critical_CSS( $critical_css, $this->paths->get_current_critical_css_key() );
126        $display->register_hooks();
127    }
128
129    public function update_total_problem_count( $count ) {
130        return ( new Critical_CSS_State() )->has_errors() ? ++$count : $count;
131    }
132}