<?php

// If accessed directly, exit
if ( !defined( 'ABSPATH' ) ) {
    exit;
}
/**
 * This is contains the main plugin class
 * which contains everything.
 *
 * @since 1.0
 * @author Imtiaz Rayhan
 */
// Checking is the class already exists.
if ( !class_exists( 'WPCD_Plugin' ) ) {
    /**
     * Class WPCD_Plugin
     * This is the main plugin class.
     *
     * @since 1.0
     */
    class WPCD_Plugin {
        /**
         * Setting up constant that we will use later
         * throughout our class.
         *
         * @since 1.0
         */
        const PLUGIN_VERSION = '3.2.2';

        const CUSTOM_POST_TYPE = 'wpcd_coupons';

        const CUSTOM_TAXONOMY = 'wpcd_coupon_category';

        const VENDOR_TAXONOMY = 'wpcd_coupon_vendor';

        const TEXT_DOMAIN = 'wp-coupons-and-deals';

        const NAME_SINGULAR = 'Coupon';

        const NAME_PLURAL = 'Coupons';

        const TAXONOMY_SINGULAR = 'Coupon Category';

        const TAXONOMY_PLURAL = 'Coupon Categories';

        const VENDOR_SINGULAR = 'Coupon Vendor';

        const VENDOR_PLURAL = 'Coupon Vendors';

        const ALLOWED_ROLE_META_CAP = 'wpcd_allowed_cap';

        /**
         * Instance to instantiate object.
         *
         * @var $instance
         */
        protected static $instance;

        /**
         * Plugin directory.
         *
         * @var string $plugin_dir_path holds the plugin directory path.
         * @since 1.0
         */
        public $plugin_dir_path;

        /**
         * Plugin directory URI.
         *
         * @var string $plugin_dir_uri holds the plugin directory URI.
         * @since 1.0
         */
        public $plugin_dir_uri;

        /**
         * Plugin assets URI.
         *
         * @var string $plugin_assets holds the path to plugin assets.
         * @since 1.0
         */
        public $plugin_assets;

        /**
         * Plugin includes path.
         *
         * @var string $plugin_includes holds the path to plugin includes.
         * @since 1.0
         */
        public $plugin_includes;

        /**
         * Plugin classes path.
         *
         * @var string $plugin_classes holds the path to plugin classes.
         * @since 1.0
         */
        public $plugin_classes;

        /**
         * Singleton pattern, making only one instance of the class.
         *
         * @since 1.00
         */
        public static function instance() {
            if ( !isset( self::$instance ) ) {
                $className = __CLASS__;
                self::$instance = new $className();
            }
            return self::$instance;
        }

        /**
         * WPCD_Plugin constructor.
         * Adds necessary stuff when plugin
         * is activated.
         *
         * @since 1.0
         */
        public function __construct() {
            /**
             * These are the necessary directory, we'll need
             * throughout plugin.
             *
             * @since 1.0
             */
            $this->plugin_dir_path = trailingslashit( dirname( plugin_dir_path( __FILE__ ) ) );
            $this->plugin_dir_uri = trailingslashit( dirname( plugin_dir_url( __FILE__ ) ) );
            $this->plugin_assets = $this->plugin_dir_uri . trailingslashit( 'assets' );
            $this->plugin_includes = $this->plugin_dir_path . trailingslashit( 'includes' );
            $this->plugin_classes = $this->plugin_includes . trailingslashit( 'classes' );
            add_filter(
                'user_has_cap',
                array($this, 'filter_user_caps'),
                99,
                1
            );
        }

        /**
         * Load necessary files.
         *
         * @since 1.0
         */
        public static function load_block_files() {
            require_once WPCD_Plugin::instance()->plugin_classes . 'wpcd-block-assets.php';
            require_once WPCD_Plugin::instance()->plugin_classes . 'wpcd-block-category.php';
            // Load the block css generator
            require_once WPCD_Plugin::instance()->plugin_classes . 'wpcd-block-css-generator.php';
            // Load the blocks
            require_once WPCD_Plugin::instance()->plugin_includes . 'blocks/class-coupon-block.php';
        }

        /**
         * Activation function. Runs this when plugin is activated.
         *
         * @since 1.0
         */
        public static function wpcd_activate() {
            /**
             * Checking if the user has the permissions.
             */
            if ( !current_user_can( 'activate_plugins' ) ) {
                return;
            }
            add_filter(
                'user_has_cap',
                array(WPCD_Plugin::instance(), 'filter_user_caps'),
                99,
                1
            );
            // Adds the option to check if user is notified for review.
            add_option( 'wpcd_review_notify', 'no' );
            add_option( 'wpcd_popup-goto-link', 'on' );
            // Adds the option to enable users to delete their coupons
            add_option( 'wpcd_form-shortcode-enable-thrash', 'on' );
            // Adds the options to enable splitting the form into smaller segments
            add_option( 'wpcd_form-shortcode-split-form', 'split' );
            /**
             * Loading the class here to avoid errors.
             *
             * @since 1.0
             */
            WPCD_Plugin::instance()->loadClasses();
            /**
             * Registering the custom post type when plugin is activated.
             *
             * @since 1.0
             */
            WPCD_Plugin::instance()->custom_post_type_register();
            /**
             * Clear the permalinks after the post type has been registered.
             *
             * @since 1.0
             */
            flush_rewrite_rules();
            /**
             * Adds the welcome page.
             *
             * @since 2.0
             */
            //WPCD_Welcome_Page::wpcd_welcome_activate();
        }

        /**
         * Deactivation. Runs when the plugin is deactivated.
         *
         * @since 1.0
         */
        public static function wpcd_deactivate() {
            /**
             * Checking if the user has the permissions.
             */
            if ( !current_user_can( 'activate_plugins' ) ) {
                return;
            }
            /**
             * Clear the permalinks to remove our post type's rules.
             *
             * @since 1.0
             */
            flush_rewrite_rules();
            add_action( 'after_uninstall', 'wcad_fs_uninstall_cleanup' );
            /**
             * Welcome page transient remove.
             *
             * @since 2.0
             */
            //WPCD_Welcome_Page::wpcd_welcome_deactivate();
        }

        /**
         * This function initializes necessary files, classes
         * and functions.
         *
         * @since 1.0
         */
        public static function init() {
            /**
             * Adding actions using proper functions.
             *
             * @since 1.0
             */
            add_action( 'init', array(__CLASS__, 'loadClasses'), 10 );
            add_action( 'init', array(__CLASS__, 'custom_taxonomy_register') );
            add_action( 'init', array(__CLASS__, 'custom_post_type_register') );
            add_action( 'init', array(__CLASS__, 'load_block_files') );
            add_action( 'widgets_init', array(__CLASS__, 'wpcd_widget_register'), 20 );
            add_filter( 'wp_enqueue_scripts', array(__CLASS__, 'load_jquery'), 1 );
            add_action( 'wp_enqueue_scripts', array(__CLASS__, 'load_jquery') );
            add_filter( 'wp_head', array(__CLASS__, 'load_jquery') );
            add_action( 'wp_dashboard_setup', array(__CLASS__, 'wpcd_dashboard_add_widgets') );
            if ( wcad_fs()->is_not_paying() && !wcad_fs()->is_trial() ) {
                add_action( 'admin_menu', array(__CLASS__, 'free_pro_trial'), 99 );
            }
        }

        /**
         * this function checks if jQuery exits to added it
         *
         * @since 2.2.2
         */
        public static function load_jquery() {
            if ( !wp_script_is( 'jquery', 'enqueued' ) ) {
                //Enqueue
                wp_enqueue_script(
                    'jquery',
                    false,
                    array(),
                    false,
                    false
                );
            }
        }

        /**
         * This function loads the auto-loader which
         * loads all the classes.
         *
         * @since 1.0
         */
        public static function loadClasses() {
            /**
             * Including the auto loader file.
             * This loads all the classes so we can use them
             * whenever we want.
             *
             * @since 1.0
             */
            include WPCD_Plugin::instance()->plugin_includes . 'autoloader.php';
            include WPCD_Plugin::instance()->plugin_includes . 'classes/CouponHelper.php';
            /**
             * Registering the autoloader to autoload classes.
             *
             * @since 1.0
             */
            WPCD_Autoloader::register();
            /**
             * Adding the admin classes to initialize.
             *
             * @since 1.0
             */
            self::wpcd_admin_classes();
            /**
             * Adding the shortcode class to initialize.
             *
             * @since 1.0
             */
            self::shortcode_class();
            /**
             * Adding the ajax class to initialize.
             *
             * @since 2.5.0.1
             */
            self::ajax_class();
            /**
             * Welcome page.
             *
             * @since 2.0
             */
            WPCD_Welcome_Page::init();
            /**
             * Adds the links to toolbar.
             *
             * @since 2.0
             */
            new WPCD_Toolbar_Links();
            /**
             * Include pagination functions
             *
             * @since 2.7.3
             */
            self::wpcd_pagination();
            /**
             * Include addition functions
             *
             * @since 2.7.3
             */
            self::wpcd_additional_functions();
        }

        /**
         * This function registers the custom coupon
         * code post type.
         *
         * @since 1.0
         */
        public static function custom_post_type_register() {
            /**
             * This generates the lables for the custom post type.
             * Passing the arguments for the static method of the
             * post type class.
             *
             * @since 1.0
             */
            $labels = WPCD_Custom_Post_Type::post_type_labels( self::NAME_SINGULAR, self::NAME_PLURAL, self::TEXT_DOMAIN );
            /**
             * This method registers the custom post type
             * with WordPress.
             *
             * @since 1.0
             */
            WPCD_Custom_Post_Type::post_type_register(
                self::CUSTOM_POST_TYPE,
                self::NAME_SINGULAR,
                $labels,
                self::TEXT_DOMAIN
            );
            /**
             * Instantiating the custom post type class.
             * Custom Post type name is passed.
             *
             * @since 1.0
             */
            new WPCD_Custom_Post_Type(self::CUSTOM_POST_TYPE);
        }

        /**
         * This function generates the labels for the
         * custom taxonomy and registers it with WordPress.
         *
         * @since 1.0
         */
        public static function custom_taxonomy_register() {
            /**
             * Category
             */
            /**
             * Generating the labels for the custom taxonomy.
             */
            $labels = WPCD_Custom_Taxonomy::taxonomy_labels( self::TAXONOMY_SINGULAR, self::TAXONOMY_PLURAL, self::TEXT_DOMAIN );
            /**
             * Registering the custom taxonomy with WordPress.
             */
            WPCD_Custom_Taxonomy::register_taxonomy(
                self::CUSTOM_TAXONOMY,
                self::CUSTOM_POST_TYPE,
                $labels,
                'wpcd_coupon_category'
            );
            WPCD_Custom_Taxonomy_Image::register( self::CUSTOM_TAXONOMY );
            /**
             * Vendor
             */
            /**
             * Generating the labels for the custom taxonomy.
             */
            $labels = WPCD_Custom_Taxonomy::taxonomy_labels( self::VENDOR_SINGULAR, self::VENDOR_PLURAL, self::TEXT_DOMAIN );
            /**
             * Registering the vendor taxonomy with WordPress.
             */
            WPCD_Custom_Taxonomy::register_taxonomy(
                self::VENDOR_TAXONOMY,
                self::CUSTOM_POST_TYPE,
                $labels,
                'wpcd_coupon_vendor'
            );
            WPCD_Custom_Taxonomy_Image::register( self::VENDOR_TAXONOMY );
        }

        /**
         * Registering the Widget.
         *
         * @since 1.2
         */
        public static function wpcd_widget_register() {
            /**
             * Including the Widget class.
             *
             * @since 1.2
             */
            include WPCD_Plugin::instance()->plugin_classes . 'wpcd-coupon-widget.php';
            /**
             * Register widget with WordPress.
             *
             * @since 1.2
             */
            register_widget( 'WPCD_Coupon_Widget' );
        }

        /**
         * This function loads the necessary admin classes by
         * instantiating the classes.
         *
         * @since 1.0
         */
        public static function wpcd_admin_classes() {
            /**
             * Including the necessary actions.
             *
             * @since 1.0
             */
            include WPCD_Plugin::instance()->plugin_includes . '/functions/admin/actions/' . 'wpcd-admin-actions.php';
            /**
             * Instantiation of settings page class.
             * Adds the settings page.
             *
             * @since 1.0
             */
            if ( file_exists( WPCD_Plugin::instance()->plugin_includes . '/classes/admin/wpcd-settings-page-pro__premium_only.php' ) ) {
                require_once WPCD_Plugin::instance()->plugin_includes . '/classes/admin/wpcd-settings-page-pro__premium_only.php';
                if ( wcad_fs()->is_plan__premium_only( 'pro' ) or wcad_fs()->can_use_premium_code() ) {
                    new WPCD_Settings_Page_Pro();
                } else {
                    new WPCD_Settings_Page();
                }
            } else {
                new WPCD_Settings_Page();
            }
            /**
             * Loading the import page.
             *
             * @since 2.3.2
             */
            if ( file_exists( WPCD_Plugin::instance()->plugin_includes . '/classes/admin/wpcd-import-page-pro__premium_only.php' ) ) {
                require_once WPCD_Plugin::instance()->plugin_includes . '/classes/admin/wpcd-import-page-pro__premium_only.php';
                if ( (wcad_fs()->is_plan__premium_only( 'pro' ) or wcad_fs()->can_use_premium_code()) && current_user_can( self::ALLOWED_ROLE_META_CAP ) ) {
                    new WPCD_Import_Page_Pro();
                } else {
                    new WPCD_Import_Page();
                }
            } else {
                new WPCD_Import_Page();
            }
            /**
             * This instantiation adds the custom meta boxes
             * to the custom post type we registered.
             *
             * @since 1.0
             */
            if ( file_exists( WPCD_Plugin::instance()->plugin_includes . '/classes/admin/wpcd-meta-boxes-pro__premium_only.php' ) ) {
                require_once WPCD_Plugin::instance()->plugin_includes . '/classes/admin/wpcd-meta-boxes-pro__premium_only.php';
                if ( wcad_fs()->is_plan__premium_only( 'pro' ) or wcad_fs()->can_use_premium_code() ) {
                    new WPCD_Meta_Boxes_Pro();
                } else {
                    new WPCD_Meta_Boxes();
                }
            } else {
                new WPCD_Meta_Boxes();
            }
            /**
             * Shows the shortcodes after coupon is published.
             *
             * @since 2.0
             */
            new WPCD_Shortcode_Metabox();
            /**
             * Adds the help shortocode in new coupon screen.
             *
             * @since 2.3.2
             */
            new WPCD_Help_Metabox();
            /**
             * Adds the preview metabox.
             *
             * @since 2.0
             */
            ( new WPCD_Preview_Metabox() )->add_meta_boxes();
            /**
             * This adds the add coupon button to the post and
             * page editors.
             *
             * Inserts the shortcode.
             *
             * @since 1.0
             */
            //WPCD_Shortcode_Inserter::wpcd_shortcode_insert();
            /**
             * This adds the custom columns in
             * custom post type admin scree.
             *
             * @since 1.0
             */
            WPCD_Admin_Columns::wpcd_columns_init();
            /**
             * This loads the necessary stylesheets and
             * scripts.
             *
             * @since 1.0
             */
            WPCD_Assets::wpcd_assets_init();
            /**
             * Shows the shortcodes in admin notices when post Published.
             *
             * @since 2.0
             */
            WPCD_Admin_Notices::init();
        }

        /**
         * This function loads the shortcode class and
         * related files with the class.
         *
         * @since 1.0
         */
        public static function shortcode_class() {
            /**
             * Including the necessary actions.
             *
             * @since 1.0
             */
            include WPCD_Plugin::instance()->plugin_includes . '/functions/shortcode/code/actions/' . 'wpcd-shortcode-code-actions.php';
            /**
             * Instantiation of shortcode class.
             * This registers the shortcode with WordPress.
             *
             * @since 1.0
             */
            WPCD_Short_Code::init();
        }

        /**
         * This function loads the ajax class
         *
         * @since 2.5.0.1
         */
        public static function ajax_class() {
            /**
             * Load the ajax events
             *
             * @since 2.5.0.1
             */
            WPCD_AJAX::LoadEvents();
        }

        /**
         * Free Pro Trial Page for Free Users.
         * @since 2.6.2
         */
        public static function free_pro_trial() {
            add_submenu_page(
                'edit.php?post_type=wpcd_coupons',
                __( 'Free Pro Trial', 'wp-coupons-and-deals' ),
                __( 'Free Pro Trial', 'wp-coupons-and-deals' ),
                'manage_options',
                esc_url( wcad_fs()->get_trial_url() )
            );
        }

        /**
         * This function loads the file with pagination functions
         *
         * @since 2.7.3
         */
        public static function wpcd_pagination() {
            if ( file_exists( WPCD_Plugin::instance()->plugin_includes . '/functions/wpcd-coupon-pagination__premium_only.php' ) ) {
                include WPCD_Plugin::instance()->plugin_includes . '/functions/wpcd-coupon-pagination__premium_only.php';
            }
        }

        /**
         * This function loads the file with different help functions
         *
         * @since 2.7.3
         */
        public static function wpcd_additional_functions() {
            include WPCD_Plugin::instance()->plugin_includes . '/functions/wpcd-addition-functions.php';
        }

        /**
         * Setting up dashboard widget.
         */
        public static function wpcd_dashboard_add_widgets() {
            wp_add_dashboard_widget( 'wpcd_dashboard_widget_news', __( 'Coupons Overview', 'wp-coupons-and-deals' ), array(__CLASS__, 'wpcd_dashboard_widget_news_handler') );
        }

        /**
         * Dashboard Widget.
         */
        public static function wpcd_dashboard_widget_news_handler() {
            include WPCD_Plugin::instance()->plugin_includes . '/templates/extras/dashboard-widget.php';
        }

        /**
         * WordPress user_has_cap filter callback function
         *
         * We will be using this hook to allow option defined user roles to use table builder at front-end
         *
         * @param array $all_caps current user caps
         *
         * @return array user caps
         */
        public function filter_user_caps( $all_caps ) {
            if ( is_user_logged_in() ) {
                $current_user = wp_get_current_user();
                if ( $current_user->roles[0] === 'administrator' or wcad_fs()->is_plan__premium_only( 'pro' ) or wcad_fs()->can_use_premium_code() ) {
                    // provide default value for get_option
                    $intersection = array_intersect( get_option( 'wpcd_create-edit-import-allowed-roles', ['administrator'] ), $current_user->roles );
                    if ( sizeof( $intersection ) > 0 ) {
                        if ( !isset( $all_caps[self::ALLOWED_ROLE_META_CAP] ) ) {
                            $all_caps[self::ALLOWED_ROLE_META_CAP] = true;
                        }
                    }
                }
            }
            return $all_caps;
        }

    }

}