class-gv-core.php

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<?php
namespace GV;

/** If this file is called directly, abort. */
if ( ! defined( 'GRAVITYVIEW_DIR' ) ) {
    die();
}

/**
 * The core GravityView API.
 *
 * Returned by the wrapper gravityview() global function, exposes
 * all the required public functionality and classes, sets up global
 * state depending on current request context, etc.
 */
final class Core {
    /**
     * @var \GV\Core The \GV\Core static instance.
     */
    private static $__instance = null;

    /**
     * @var \GV\Plugin The WordPress plugin context.
     *
     * @api
     * @since 2.0
     */
    public $plugin;

    /**
     * @var \GV\Admin_Request|\GV\Frontend_Request|\GV\Request The global request.
     *
     * @api
     * @since 2.0
     */
    public $request;

    /**
     * @var \GV\Logger
     *
     * @api
     * @since 2.0
     */
    public $log;

    /**
     * Get the global instance of \GV\Core.
     *
     * @return \GV\Core The global instance of GravityView Core.
     */
    public static function get() {
        if ( ! self::$__instance instanceof self ) {
            self::$__instance = new self;
        }
        return self::$__instance;
    }

    /**
     * Very early initialization.
     *
     * Activation handlers, rewrites, post type registration.
     */
    public static function bootstrap() {
        require_once dirname( __FILE__ ) . '/class-gv-plugin.php';
        Plugin::get()->register_activation_hooks();
    }

    /**
     * Bootstrap.
     *
     * @return void
     */
    private function __construct() {
        self::$__instance = $this;
        $this->init();
    }

    /**
     * Early initialization.
     *
     * Loads dependencies, sets up the object, adds hooks, etc.
     *
     * @return void
     */
    private function init() {
        $this->plugin = Plugin::get();

        /** Enable logging. */
        require_once $this->plugin->dir( 'future/includes/class-gv-logger.php' );
        /**
         * @filter `gravityview/logger` Filter the logger instance being used for logging.
         * @param \GV\Logger $logger The logger instance.
         */
        $this->log = apply_filters( 'gravityview/logger', new WP_Action_Logger() );

        /**
         * Utilities.
         */
        require_once $this->plugin->dir( 'future/includes/class-gv-utils.php' );

        /** The Settings. */
        require_once $this->plugin->dir( 'future/includes/class-gv-settings.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-settings-view.php' );

        /** Request. */
        require_once $this->plugin->dir( 'future/includes/class-gv-request.php' );

        if ( Request::is_admin() ) {
            $this->request = new Admin_Request();
        } else {
            $this->request = new Frontend_Request();
        }

        /** Require critical legacy core files. @todo Deprecate */
        require_once $this->plugin->dir( 'includes/import-functions.php' );
        require_once $this->plugin->dir( 'includes/helper-functions.php' );
        require_once $this->plugin->dir( 'includes/class-common.php');
        require_once $this->plugin->dir( 'includes/connector-functions.php');
        require_once $this->plugin->dir( 'includes/class-gravityview-compatibility.php' );
        require_once $this->plugin->dir( 'includes/class-gravityview-roles-capabilities.php' );
        require_once $this->plugin->dir( 'includes/class-gravityview-admin-notices.php' );
        require_once $this->plugin->dir( 'includes/class-admin.php' );
        require_once $this->plugin->dir( 'includes/class-post-types.php');
        require_once $this->plugin->dir( 'includes/class-cache.php');

        /**
         * GravityView extensions and widgets.
         */
        require_once $this->plugin->dir( 'future/includes/class-gv-extension.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-widget.php' );

        /** More legacy core. @todo Deprecate */
        $this->plugin->include_legacy_core();

        /**
         * Stop all further functionality from loading if the WordPress
         * plugin is incompatible with the current environment.
         *
         * Saves some time and memory.
         */
        if ( ! $this->plugin->is_compatible() ) {
            $this->log->error( 'GravityView 2.0 is not compatible with this environment. Stopped loading.' );
            return;
        }

        /** Register the gravityview post type upon WordPress core init. */
        require_once $this->plugin->dir( 'future/includes/class-gv-view.php' );
        add_action( 'init', array( '\GV\View', 'register_post_type' ) );
        add_action( 'init', array( '\GV\View', 'add_rewrite_endpoint' ) );
        add_filter( 'map_meta_cap', array( '\GV\View', 'restrict' ), 11, 4 );
        add_action( 'template_redirect', array( '\GV\View', 'template_redirect' ) );
        add_action( 'the_content', array( '\GV\View', 'content' ) );

        /** Add rewrite endpoint for single-entry URLs. */
        require_once $this->plugin->dir( 'future/includes/class-gv-entry.php' );
        add_action( 'init', array( '\GV\Entry', 'add_rewrite_endpoint' ) );

        /** REST API */
        require_once $this->plugin->dir( 'future/includes/rest/class-gv-rest-core.php' );
        add_action( 'rest_api_init', array( '\GV\REST\Core', 'init' ) );

        /** Generate custom slugs on entry save. @todo Deprecate. */
        add_action( 'gform_entry_created', array( '\GravityView_API', 'entry_create_custom_slug' ), 10, 2 );

        /** Shortcodes */
        require_once $this->plugin->dir( 'future/includes/class-gv-shortcode.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-shortcode-gravityview.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-shortcode-gventry.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-shortcode-gvfield.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-shortcode-gvlogic.php' );
        add_action( 'init', array( '\GV\Shortcodes\gravityview', 'add' ) );
        add_action( 'init', array( '\GV\Shortcodes\gventry', 'add' ) );
        add_action( 'init', array( '\GV\Shortcodes\gvfield', 'add' ) );
        add_action( 'init', array( '\GV\Shortcodes\gvlogic', 'add' ) );

        /** oEmbed */
        require_once $this->plugin->dir( 'future/includes/class-gv-oembed.php' );
        add_action( 'init', array( '\GV\oEmbed', 'init' ), 11 );

        /** Our Source generic and beloved source and form backend implementations. */
        require_once $this->plugin->dir( 'future/includes/class-gv-source.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-source-internal.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-form.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-form-gravityforms.php' );

        /** Joins */
        require_once $this->plugin->dir( 'future/includes/class-gv-form-join.php' );

        /** Our Entry generic and beloved entry backend implementations. */
        require_once $this->plugin->dir( 'future/includes/class-gv-entry-gravityforms.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-entry-multi.php' );

        /** Context is everything. */
        require_once $this->plugin->dir( 'future/includes/class-gv-context.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-context-template.php' );

        /** Our Field generic and implementations. */
        require_once $this->plugin->dir( 'future/includes/class-gv-field.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-field-gravityforms.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-field-internal.php' );

        /** Get the collections ready. */
        require_once $this->plugin->dir( 'future/includes/class-gv-collection.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-collection-form.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-collection-field.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-collection-entry.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-collection-widget.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-collection-view.php' );

        /** The sorting, filtering and paging classes. */
        require_once $this->plugin->dir( 'future/includes/class-gv-collection-entry-filter.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-collection-entry-sort.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-collection-entry-offset.php' );

        /** The Renderers. */
        require_once $this->plugin->dir( 'future/includes/class-gv-renderer.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-renderer-view.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-renderer-entry.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-renderer-entry-edit.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-renderer-field.php' );

        /** Templating. */
        require_once $this->plugin->dir( 'future/includes/class-gv-template.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-template-view.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-template-entry.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-template-field.php' );
        require_once $this->plugin->dir( 'future/includes/class-gv-template-legacy-override.php' );

        /** Magic. */
        require_once $this->plugin->dir( 'future/includes/class-gv-wrappers.php' );

        /** Gutenberg Blocks. */
        require_once $this->plugin->dir( 'future/includes/gutenberg/class-gv-gutenberg-blocks.php' );

        require_once $this->plugin->dir( 'includes/class-gravityview-powered-by.php' );

        /** Cache busting. */
        add_action( 'clean_post_cache', '\GV\View::_flush_cache' );

        /**
         * @action `gravityview/loaded` The core has been loaded.
         *
         * Note: this is a very early load hook, not all of WordPress core has been loaded here.
         *  `init` hasn't been called yet.
         */
        do_action( 'gravityview/loaded' );
    }

    public function __clone() { }

    public function __wakeup() { }

    /**
     * Wrapper magic.
     *
     * Making developers happy, since 2017.
     */
    public function __get( $key ) {
        static $views;

        switch ( $key ) {
            case 'views':
                if ( is_null( $views ) ) {
                    $views = new \GV\Wrappers\views();
                }
                return $views;
        }
    }

    public function __set( $key, $value ) {
    }
}