<?php
/**
 * Meta Fields.
 *
 * @package CartFlows
 */

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}
/**
 * Class Cartflows_Meta_Fields.
 */
class Cartflows_Meta_Fields {

	/**
	 * Instance
	 *
	 * @var $instance
	 */
	private static $instance;

	/**
	 * Initiator
	 */
	public static function get_instance() {
		if ( ! isset( self::$instance ) ) {
			self::$instance = new self();
		}

		return self::$instance;
	}

	/**
	 * Constructor
	 */
	public function __construct() {

		/* Add Scripts */
		add_action( 'admin_enqueue_scripts', array( $this, 'admin_meta_scripts' ), 20 );

		add_action( 'wp_ajax_wcf_json_search_coupons', array( $this, 'json_search_coupons' ) );

		add_action( 'wp_ajax_wcf_json_search_products_and_variations', array( $this, 'json_search_products' ) );

		add_action( 'wp_ajax_wcf_json_search_pages', array( $this, 'json_search_pages' ) );

		add_filter( 'cartflows_admin_js_localize', array( $this, 'localize_vars' ) );
	}

	/**
	 * Admin meta scripts
	 */
	public function admin_meta_scripts() {

		global $pagenow;
		global $post;

		$localize = array(
			'ajax_url' => admin_url( 'admin-ajax.php' ),
		);

		$screen         = get_current_screen();
		$current_action = isset( $_GET['action'] ) ? sanitize_text_field( $_GET['action'] ) : ''; //phpcs:ignore

		if ( is_object( $screen ) &&
			( wcf()->utils->is_step_post_type( $screen->post_type ) || 'wcf-edit-step' === $current_action ) ) {
			$localize['google_fonts'] = CartFlows_Font_Families::get_google_fonts();
			$localize['system_fonts'] = CartFlows_Font_Families::get_system_fonts();
			$localize['font_weights'] = array(
				'100' => __( 'Thin 100', 'cartflows' ),
				'200' => __( 'Extra-Light 200', 'cartflows' ),
				'300' => __( 'Light 300', 'cartflows' ),
				'400' => __( 'Normal 400', 'cartflows' ),
				'500' => __( 'Medium 500', 'cartflows' ),
				'600' => __( 'Semi-Bold 600', 'cartflows' ),
				'700' => __( 'Bold 700', 'cartflows' ),
				'800' => __( 'Extra-Bold 800', 'cartflows' ),
				'900' => __( 'Ultra-Bold 900', 'cartflows' ),
			);
		}

		$localize = apply_filters( 'wcf_js_localize', $localize );

		$localize_script  = '<!-- script to print the admin localized variables -->';
		$localize_script .= '<script type="text/javascript">';
		$localize_script .= 'var wcf = ' . wp_json_encode( $localize ) . ';';
		$localize_script .= '</script>';

		echo $localize_script;

		if ( is_object( $screen ) &&
			( 'post-new.php' == $pagenow || 'post.php' == $pagenow ) &&
			wcf()->utils->is_step_post_type( $screen->post_type )
		) {

			wp_enqueue_style( 'woocommerce_admin_styles' );

			wp_enqueue_script( 'select2' );
			wp_enqueue_script( 'wc-enhanced-select' );

			wp_enqueue_script(
				'wcf-admin-meta',
				CARTFLOWS_URL . 'admin-legacy/assets/js/admin-edit.js',
				array( 'jquery', 'wp-color-picker' ),
				CARTFLOWS_VER,
				true
			);

			wp_enqueue_style( 'wcf-admin-meta', CARTFLOWS_URL . 'admin-legacy/assets/css/admin-edit.css', array( 'wp-color-picker' ), CARTFLOWS_VER );
			wp_style_add_data( 'wcf-admin-meta', 'rtl', 'replace' );

			do_action( 'cartflows_admin_meta_scripts' );
		}

	}

		/**
		 * Function to search products.
		 */
	public function json_search_products() {

		check_admin_referer( 'wcf-json-search-products-and-variations', 'security' );

		global $wpdb;

		// get search term.
		$term = (string) urldecode( sanitize_text_field( wp_unslash( $_GET['term'] ) ) ); // phpcs:ignore

		if ( empty( $term ) ) {
			die();
		}

		// CartFlows supported product types.
		$supported_product_types = array( 'simple', 'variable', 'variation', 'subscription', 'variable-subscription', 'subscription_variation', 'course' );

		// Allowed product types.
		if ( isset( $_GET['allowed'] ) && ! empty( $_GET['allowed'] ) ) {

			$allowed_product_types = sanitize_text_field( ( wp_unslash( $_GET['allowed'] ) ) );

			$allowed_product_types = $this->sanitize_data_attributes( $allowed_product_types );

			$supported_product_types = $allowed_product_types;
		}

		// Include product types.
		if ( isset( $_GET['included'] ) && ! empty( $_GET['included'] ) ) {

			$include_product_types = sanitize_text_field( ( wp_unslash( $_GET['included'] ) ) );

			$include_product_types = $this->sanitize_data_attributes( $include_product_types );

			$supported_product_types = array_merge( $supported_product_types, $include_product_types );
		}

		// Exclude product types.
		if ( isset( $_GET['excluded'] ) && ! empty( $_GET['excluded'] ) ) {

			$excluded_product_types = sanitize_text_field( ( wp_unslash( $_GET['excluded'] ) ) );

			$excluded_product_types = $this->sanitize_data_attributes( $excluded_product_types );

			$supported_product_types = array_diff( $supported_product_types, $excluded_product_types );
		}

		// Get all products data.
		$data = WC_Data_Store::load( 'product' );
		$ids  = $data->search_products( $term, '', true, false, 11 );

		// Get all product objects.
		$product_objects = array_filter( array_map( 'wc_get_product', $ids ), 'wc_products_array_filter_readable' );

		// Remove the product objects whose product type are not in supported array.
		$product_objects = array_filter(
			$product_objects,
			function ( $arr ) use ( $supported_product_types ) {
				return $arr && is_a( $arr, 'WC_Product' ) && in_array( $arr->get_type(), $supported_product_types, true );
			}
		);

		$products_found = array();

		foreach ( $product_objects as $product_object ) {
			$formatted_name = $product_object->get_formatted_name();
			$managing_stock = $product_object->managing_stock();

			if ( $managing_stock && ! empty( $_GET['display_stock'] ) ) {
				$stock_amount = $product_object->get_stock_quantity();
				/* Translators: %d stock amount */
				$formatted_name .= ' &ndash; ' . sprintf( __( 'Stock: %d', 'cartflows' ), wc_format_stock_quantity_for_display( $stock_amount, $product_object ) );
			}

				$products_found[ $product_object->get_id() ] = rawurldecode( $formatted_name );

		}

		wp_send_json( $products_found );
	}

	/**
	 * Function to sanitize the product type data attribute.
	 *
	 * @param array $product_types product types.
	 */
	public function sanitize_data_attributes( $product_types = array() ) {

		if ( ! is_array( $product_types ) ) {
				$product_types = explode( ',', $product_types );
		}

			// Sanitize the excluded types against valid product types.
		foreach ( $product_types as $index => $value ) {
			$product_types[ $index ] = strtolower( trim( $value ) );
		}
			return $product_types;
	}




	/**
	 * Function to search coupons
	 */
	public function json_search_coupons() {

		check_admin_referer( 'wcf-json-search-coupons', 'security' );

		global $wpdb;

		$term = (string) urldecode( sanitize_text_field( wp_unslash( $_GET['term'] ) ) ); // phpcs:ignore

		if ( empty( $term ) ) {
			die();
		}

		$posts = wp_cache_get( 'wcf_search_coupons', 'wcf_funnel_Cart' );

		if ( false === $posts ) {
			$posts = $wpdb->get_results( // phpcs:ignore
				$wpdb->prepare(
					"SELECT *
								FROM {$wpdb->prefix}posts
								WHERE post_type = %s
								AND post_title LIKE %s
								AND post_status = %s",
					'shop_coupon',
					$wpdb->esc_like( $term ) . '%',
					'publish'
				)
			);
			wp_cache_set( 'wcf_search_coupons', $posts, 'wcf_funnel_Cart' );
		}

		$coupons_found      = array();
		$all_discount_types = wc_get_coupon_types();

		if ( $posts ) {
			foreach ( $posts as $post ) {

				$discount_type = get_post_meta( $post->ID, 'discount_type', true );

				if ( ! empty( $all_discount_types[ $discount_type ] ) ) {
					$coupons_found[ get_the_title( $post->ID ) ] = get_the_title( $post->ID ) . ' (Type: ' . $all_discount_types[ $discount_type ] . ')';
				}
			}
		}

		wp_send_json( $coupons_found );
	}

	/**
	 * Function to search coupons
	 */
	public function json_search_pages() {

		check_ajax_referer( 'wcf-json-search-pages', 'security' );

		$term = (string) urldecode( sanitize_text_field( wp_unslash( $_GET['term'] ) ) ); // phpcs:ignore

		if ( empty( $term ) ) {
			die( 'not found' );
		}

		$search_string = $term;
		$data          = array();
		$result        = array();

		add_filter( 'posts_search', array( $this, 'search_only_titles' ), 10, 2 );

		$query = new WP_Query(
			array(
				's'              => $search_string,
				'post_type'      => 'page',
				'posts_per_page' => -1,
			)
		);

		if ( $query->have_posts() ) {
			while ( $query->have_posts() ) {
				$query->the_post();
				$title  = get_the_title();
				$title .= ( 0 != $query->post->post_parent ) ? ' (' . get_the_title( $query->post->post_parent ) . ')' : '';
				$id     = get_the_id();
				$data[] = array(
					'id'   => $id,
					'text' => $title,
				);
			}
		}

		if ( is_array( $data ) && ! empty( $data ) ) {
			$result[] = array(
				'text'     => '',
				'children' => $data,
			);
		}

		wp_reset_postdata();

		// return the result in json.
		wp_send_json( $result );
	}

	/**
	 * Search only titles.
	 *
	 * @param string $search Field data.
	 * @param object $wp_query Query.
	 *
	 * @return array.
	 */
	public function search_only_titles( $search, $wp_query ) {
		if ( ! empty( $search ) && ! empty( $wp_query->query_vars['search_terms'] ) ) {
			global $wpdb;

			$q = $wp_query->query_vars;
			$n = ! empty( $q['exact'] ) ? '' : '%';

			$search = array();

			foreach ( (array) $q['search_terms'] as $term ) {
				$search[] = $wpdb->prepare( "$wpdb->posts.post_title LIKE %s", $n . $wpdb->esc_like( $term ) . $n );
			}