<?php
/**
 * Utils.
 *
 * @package CARTFLOWS
 */

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

/**
 * Class Cartflows_Pro_Utils.
 */
class Cartflows_Pro_Utils {

	/**
	 * Member Variable
	 *
	 * @var instance
	 */
	private static $instance;

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

	/**
	 * Clone step by ID
	 *
	 * @param int $post_id    Step id.
	 *
	 * @return int|bool
	 */
	public function clone_step( $post_id ) {

		global $wpdb;

		/**
		 * And all the original post data then
		 */
		$post = get_post( $post_id );

		/**
		 * If post data exists, create the post duplicate
		 */
		if ( isset( $post ) && null !== $post ) {

			/**
			 * Assign current user to be the new post author
			 */
			$current_user    = wp_get_current_user();
			$new_post_author = $current_user->ID;

			/**
			 * New post data array
			 */
			$args = array(
				'comment_status' => $post->comment_status,
				'ping_status'    => $post->ping_status,
				'post_author'    => $new_post_author,
				'post_content'   => $post->post_content,
				'post_excerpt'   => $post->post_excerpt,
				'post_name'      => $post->post_name,
				'post_parent'    => $post->post_parent,
				'post_password'  => $post->post_password,
				'post_status'    => $post->post_status,
				'post_title'     => $post->post_title . ' Clone',
				'post_type'      => $post->post_type,
				'to_ping'        => $post->to_ping,
				'menu_order'     => $post->menu_order,
			);

			/**
			 * Insert the post
			 */
			$new_step_id = wp_insert_post( $args );

			/**
			 * Get all current post terms ad set them to the new post
			 */
			// returns array of taxonomy names for post type, ex array("category", "post_tag");.
			$taxonomies = get_object_taxonomies( $post->post_type );

			foreach ( $taxonomies as $taxonomy ) {

				$post_terms = wp_get_object_terms( $post_id, $taxonomy, array( 'fields' => 'slugs' ) );

				wp_set_object_terms( $new_step_id, $post_terms, $taxonomy, false );
			}

			/**
			 * Duplicate all post meta just in two SQL queries
			 */
			// @codingStandardsIgnoreStart
			$post_meta_infos = $wpdb->get_results(
				"SELECT meta_key, meta_value FROM $wpdb->postmeta WHERE post_id=$post_id"
			);
			// @codingStandardsIgnoreEnd

			if ( ! empty( $post_meta_infos ) ) {

				$sql_query = "INSERT INTO $wpdb->postmeta (post_id, meta_key, meta_value) VALUES ";

				$sql_query_sel = array();

				foreach ( $post_meta_infos as $meta_info ) {

					$meta_key = $meta_info->meta_key;

					if ( '_wp_old_slug' === $meta_key ) {
						continue;
					}

					$meta_value = addslashes( $meta_info->meta_value );

					$sql_query_sel[] = "($new_step_id, '$meta_key', '$meta_value')";
				}

				$sql_query .= implode( ',', $sql_query_sel );

				// @codingStandardsIgnoreStart
				$wpdb->query( $sql_query );
    			// @codingStandardsIgnoreEnd
			}

			/* Clear Page Builder Cache */
			wcf()->utils->clear_cache();

			/**
			 * Return new step id
			 */
			return $new_step_id;
		}

		return false;
	}

	/**
	 * We are using this function mostly in ajax on checkout page
	 *
	 * @param array $post_data post data.
	 * @return bool
	 */
	public function get_checkout_id_from_data( $post_data ) {

		if ( isset( $post_data['_wcf_checkout_id'] ) ) { //phpcs:ignore

			$checkout_id = filter_var( wp_unslash( $post_data['_wcf_checkout_id'] ), FILTER_SANITIZE_NUMBER_INT ); //phpcs:ignore

			return intval( $checkout_id );
		}

		return false;
	}

	/**
	 * We are using this function mostly in ajax on checkout page
	 *
	 * @param array $post_data post data.
	 * @return bool
	 */
	public function get_flow_id_from_data( $post_data ) {

		if ( isset( $post_data['_wcf_flow_id'] ) ) { //phpcs:ignore

			$flow_id = filter_var( wp_unslash( $post_data['_wcf_flow_id'] ), FILTER_SANITIZE_NUMBER_INT ); //phpcs:ignore

			return intval( $flow_id );
		}

		return false;
	}

	/**
	 * Fetch updated fragments after cart update.
	 *
	 * @param string $new_key product key.
	 * @param array  $data extra data.
	 * @return array.
	 */
	public static function get_fragments( $new_key, $data = array() ) {

		ob_start();
		woocommerce_order_review();
		$woocommerce_order_review = ob_get_clean();

		$response = array(
			'cart_total'    => WC()->cart->total,
			'cart_item_key' => $new_key,
			'fragments'     => apply_filters(
				'woocommerce_update_order_review_fragments',
				array(
					'.woocommerce-checkout-review-order-table' => $woocommerce_order_review,
				)
			),
		);

		if ( ! empty( $data ) ) {
			$response['cartflows_data'] = $data;
		}

		return $response;
	}



	/**
	 * Prepare response for facebook.
	 *
	 * @param integer $product_id product id.
	 * @return array
	 */
	public static function prepare_fb_response( $product_id ) {

		$response = array();
		$product  = wc_get_product( $product_id );

		$add_to_cart['content_type']       = 'product';
		$add_to_cart['content_category'][] = wp_strip_all_tags( wc_get_product_category_list( $product->get_id() ) );
		$add_to_cart['currency']           = get_woocommerce_currency();
		$add_to_cart['language']           = get_bloginfo( 'language' );
		$add_to_cart['userAgent']          = isset( $_SERVER['HTTP_USER_AGENT'] ) ? sanitize_text_field( wp_unslash( $_SERVER['HTTP_USER_AGENT'] ) ) : '';
		$add_to_cart['value']              = $product->get_price();
		$add_to_cart['content_name']       = $product->get_title();
		$add_to_cart['content_ids'][]      = $product->get_id();

		$response['added_to_cart'] = $add_to_cart;
		$response['current_cart']  = Cartflows_Helper::prepare_cart_data_fb_response();

		return $response;
	}

	/**
	 * Prepare response for Google Analytics.
	 *
	 * @param integer $product_id product id.
	 * @return array
	 */
	public static function prepare_ga_response( $product_id ) {

		$response = array();
		$product  = wc_get_product( $product_id );

		$product_data['id']         = $product_id;
		$product_data['name']       = $product->get_title();
		$product_data['category'][] = wp_strip_all_tags( wc_get_product_category_list( $product->get_id() ) );
		$product_data['price']      = $product->get_price();

		$response['add_to_cart']      = $product_data;
		$response['remove_from_cart'] = $product_data;
		return $response;
	}

	/**
	 * Check is offer page
	 *
	 * @param int $step_id step ID.
	 * @return bool
	 */
	public function check_is_offer_page( $step_id ) {

		$step_type = $this->get_step_type( $step_id );

		if ( 'upsell' === $step_type || 'downsell' === $step_type ) {

			return true;
		}

		return false;
	}

	/**
	 * Get offer data
	 *
	 * @param int $step_id step ID.
	 * @param int $selected_product_id product ID.
	 * @param int $input_qty qty.
	 * @param int $order_id parent order id.
	 * @return array
	 */
	public function get_offer_data( $step_id, $selected_product_id = '', $input_qty = '', $order_id = 0 ) {
		$data               = array();
		$subscription_types = array( 'subscription', 'variable-subscription', 'subscription_variation' );
		$amount_diff        = 0;
		$cancel_main_order  = false;
		$order              = '';
		$product_id         = 0;

		if ( empty( $selected_product_id ) ) {
			$offer_product = wcf_pro()->options->get_offers_meta_value( $step_id, 'wcf-offer-product' );

			if ( isset( $offer_product[0] ) ) {
				$product_id = $offer_product[0];
			}
		} else {
			$product_id = $selected_product_id;
		}

		$product = wc_get_product( $product_id );

		if ( $product ) {

			$product_type   = $product->get_type();
			$original_price = $product->get_price( 'edit' );
			$custom_price   = $original_price;

			if ( ! empty( $input_qty ) ) {
				/* Product Quantity */

				$product_qty = intval( $input_qty );
			} else {
				$product_qty = intval( wcf_pro()->options->get_offers_meta_value( $step_id, 'wcf-offer-quantity' ) );
			}

			/* Offer Discount */
			$discount_type = wcf_pro()->options->get_offers_meta_value( $step_id, 'wcf-offer-discount' );

			if ( ! empty( $discount_type ) ) {

				$discount_value = floatval( wcf_pro()->options->get_offers_meta_value( $step_id, 'wcf-offer-discount-value' ) );

				if ( 'discount_percent' === $discount_type ) {

					if ( $discount_value > 0 ) {
						$custom_price = $custom_price - ( ( $custom_price * $discount_value ) / 100 );
					}
				} elseif ( 'discount_price' === $discount_type ) {

					if ( $discount_value > 0 ) {
						$custom_price = $custom_price - $discount_value;
					}
				}
			}

			/* Set unit discount price */
			$unit_price     = $custom_price;
			$unit_price_tax = $custom_price;