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Edit File: InstallationWalkthrough.class.php

<?php

/**
 * Class to handle everything related to the walk-through that runs on plugin activation
 */

if ( ! defined( 'ABSPATH' ) )
	exit;

class ewdufaqInstallationWalkthrough {

public function __construct() {
		add_action( 'admin_menu', array( $this, 'register_install_screen' ) );
		add_action( 'admin_head', array( $this, 'hide_install_screen_menu_item' ) );
		add_action( 'admin_init', array( $this, 'redirect' ), 9999 );

add_action( 'admin_head', array( $this, 'admin_enqueue' ) );

add_action( 'wp_ajax_ewd_ufaq_welcome_add_category', array( $this, 'create_category' ) );
		add_action( 'wp_ajax_ewd_ufaq_welcome_add_faq', array( $this, 'create_faq' ) );
		add_action( 'wp_ajax_ewd_ufaq_welcome_add_faq_page', array( $this, 'add_faqs_page' ) );
		add_action( 'wp_ajax_ewd_ufaq_welcome_set_options', array( $this, 'set_options' ) );
	}

/**
	 * On activation, redirect the user if they haven't used the plugin before
	 * @since 2.0.0
	 */
	public function redirect() {
		if ( ! get_transient( 'ewd-ufaq-getting-started' ) ) 
			return;

delete_transient( 'ewd-ufaq-getting-started' );

if ( is_network_admin() || isset( $_GET['activate-multi'] ) )
			return;

if ( ! empty( get_posts( array( 'post_type' => EWD_UFAQ_FAQ_POST_TYPE ) ) ) ) {
			return;
		}

wp_safe_redirect( admin_url( 'index.php?page=ewd-ufaq-getting-started' ) );
		exit;
	}

/**
	 * Create the installation admin page
	 * @since 2.0.0
	 */
	public function register_install_screen() {

add_dashboard_page(
			esc_html__( 'Ultimate FAQs - Welcome!', 'ultimate-faqs' ),
			esc_html__( 'Ultimate FAQs - Welcome!', 'ultimate-faqs' ),
			'manage_options',
			'ewd-ufaq-getting-started',
			array($this, 'display_install_screen')
		);
	}

/**
	 * Hide the installation admin page from the WordPress sidebar menu
	 * @since 2.0.0
	 */
	public function hide_install_screen_menu_item() {

remove_submenu_page( 'index.php', 'ewd-ufaq-getting-started' );
	}

/**
	 * Create an FAQ category
	 * @since 2.0.0
	 */
	public function create_category() {
		global $ewd_ufaq_controller;

if (
			! check_ajax_referer( 'ewd-ufaq-getting-started', 'nonce' ) 
			|| 
			! current_user_can( $ewd_ufaq_controller->settings->get_setting( 'access-role' ) )
		) {
			ewdufaqHelper::admin_nopriv_ajax();
		}

$category_name = isset( $_POST['category_name'] ) ? sanitize_text_field( $_POST['category_name'] ) : '';
		$category_description = isset( $_POST['category_description'] ) ? sanitize_textarea_field( $_POST['category_description'] ) : '';

$category_term_id = wp_insert_term( $category_name, EWD_UFAQ_FAQ_CATEGORY_TAXONOMY, array('description' => $category_description) );

echo json_encode ( array( 'category_name' => $category_name, 'category_id' => $category_term_id['term_id'] ) );

exit();
	}

public function create_faq() {
		global $ewd_ufaq_controller;

$args = array(
			'post_title'   => isset( $_POST['faq_question'] ) ? sanitize_text_field( $_POST['faq_question'] ) : '',
			'post_content' => isset( $_POST['faq_answer'] ) ? sanitize_text_field( $_POST['faq_answer'] ) : '',
			'post_status'  => 'publish',
			'post_type'    => EWD_UFAQ_FAQ_POST_TYPE
		);

$faq_post_id = wp_insert_post( $args );

if ( isset( $_POST['faq_category'] ) and $_POST['faq_category'] ) {

wp_set_post_terms(
				$faq_post_id,
				sanitize_text_field( $_POST['faq_category'] ),
				EWD_UFAQ_FAQ_CATEGORY_TAXONOMY
			);
		}

exit();
	}

/**
	 * Add in a page with the ultimate-faqs shortcode
	 * @since 2.0.0
	 */
	public function add_faqs_page() {
		global $ewd_ufaq_controller;

$args = array(
			'post_title' => isset($_POST['faq_page_title'] ) ? sanitize_text_field( $_POST['faq_page_title'] ) : '',
			'post_content' => '<p></p>',
			'post_status' => 'publish',
			'post_type' => 'page'
		);

$post_id = wp_insert_post( $args );

if ( $post_id ) {

$ewd_ufaq_controller->settings->set_setting( 'faq-page', $post_id );

$ewd_ufaq_controller->settings->save_settings();
		}

exit();
	}

/**
	 * Set a number of key options selected during the walk-through process
	 * @since 2.0.0
	 */
	public function set_options() {
		global $ewd_ufaq_controller;

$ewd_ufaq_options = get_option( 'ewd-ufaq-settings' );

if ( isset( $_POST['faq_accordion'] ) ) {
			$ewd_ufaq_options['faq-accordion'] = intval( $_POST['faq_accordion'] );
		}
		if ( isset( $_POST['disable_faq_toggle'] ) ) {
			$ewd_ufaq_options['disable-faq-toggle'] = intval( $_POST['disable_faq_toggle'] );
		}
		if ( isset( $_POST['group_by_category'] ) ) {
			$ewd_ufaq_options['group-by-category'] = intval( $_POST['group_by_category'] );
		}
		if ( isset( $_POST['order_by_setting'] ) ) {
			$ewd_ufaq_options['faq-order-by'] = sanitize_text_field( $_POST['order_by_setting'] );
		}

update_option( 'ewd-ufaq-settings', $ewd_ufaq_options );

exit();
	}

/**
	 * Enqueue the admin assets necessary to run the walk-through and display it nicely
	 * @since 2.0.0
	 */
	public function admin_enqueue() {

if ( ! isset( $_GET['page'] ) or $_GET['page'] != 'ewd-ufaq-getting-started' ) { return; }

wp_enqueue_style( 'ewd-ufaq-admin-css', EWD_UFAQ_PLUGIN_URL . '/assets/css/admin.css', array(), EWD_UFAQ_VERSION );
		wp_enqueue_style( 'ewd-ufaq-sap-admin-css', EWD_UFAQ_PLUGIN_URL . '/lib/simple-admin-pages/css/admin.css', array(), EWD_UFAQ_VERSION );
		wp_enqueue_style( 'ewd-ufaq-welcome-screen', EWD_UFAQ_PLUGIN_URL . '/assets/css/ewd-ufaq-welcome-screen.css', array(), EWD_UFAQ_VERSION );
		wp_enqueue_style( 'ewd-ufaq-admin-settings-css', EWD_UFAQ_PLUGIN_URL . '/lib/simple-admin-pages/css/admin-settings.css', array(), EWD_UFAQ_VERSION );
		
		wp_enqueue_script( 'ewd-ufaq-getting-started', EWD_UFAQ_PLUGIN_URL . '/assets/js/ewd-ufaq-welcome-screen.js', array( 'jquery' ), EWD_UFAQ_VERSION );
		wp_enqueue_script( 'ewd-ufaq-admin-settings-js', EWD_UFAQ_PLUGIN_URL . '/lib/simple-admin-pages/js/admin-settings.js', array( 'jquery' ), EWD_UFAQ_VERSION );
		wp_enqueue_script( 'ewd-ufaq-admin-spectrum-js', EWD_UFAQ_PLUGIN_URL . '/lib/simple-admin-pages/js/spectrum.js', array( 'jquery' ), EWD_UFAQ_VERSION );

wp_localize_script(
			'ewd-ufaq-getting-started',
			'ewd_ufaq_getting_started',
			array(
				'nonce' => wp_create_nonce( 'ewd-ufaq-getting-started' )
			)
		);
	}

/**
	 * Output the HTML of the walk-through screen
	 * @since 2.0.0
	 */
	public function display_install_screen() { 
		global $ewd_ufaq_controller;

$faq_accordion = $ewd_ufaq_controller->settings->get_setting( 'faq-accordion' );
		$disable_faq_toggle = $ewd_ufaq_controller->settings->get_setting( 'disable-faq-toggle' );
		$group_by_category = $ewd_ufaq_controller->settings->get_setting( 'group-by-category' );
		$faq_order_by = $ewd_ufaq_controller->settings->get_setting( 'faq-order-by' );

<?php }
}

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