<?php

namespace MainWP\Child;

class MainWP_Helper {

	public static function write( $val ) {
		if ( isset( $_REQUEST['json_result'] ) && true == $_REQUEST['json_result'] ) :
			$output = self::safe_json_encode( $val );
		else :
			$output = serialize( $val ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.
		endif;

		die( '<mainwp>' . base64_encode( $output ) . '</mainwp>' ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions -- base64_encode function is used for benign reasons.
	}

	public static function json_valid_check( $data ) {

		if ( is_array( $data ) ) {
			$output = array();
			foreach ( $data as $key => $value ) {
				if ( is_string( $key ) ) {
					$id = self::json_convert_string( $key );
				} else {
					$id = $key;
				}
				if ( is_array( $value ) || is_object( $value ) ) {
					$output[ $id ] = self::json_valid_check( $value );
				} elseif ( is_string( $value ) ) {
					$output[ $id ] = self::json_convert_string( $value );
				} else {
					$output[ $id ] = $value;
				}
			}
		} elseif ( is_object( $data ) ) {
			$output = new stdClass();
			foreach ( $data as $key => $value ) {
				if ( is_string( $key ) ) {
					$id = self::json_convert_string( $key );
				} else {
					$id = $key;
				}
				if ( is_array( $value ) || is_object( $value ) ) {
					$output->$id = self::json_valid_check( $value );
				} elseif ( is_string( $value ) ) {
					$output->$id = self::json_convert_string( $value );
				} else {
					$output->$id = $value;
				}
			}
		} elseif ( is_string( $data ) ) {
			return self::json_convert_string( $data );
		} else {
			return $data;
		}

		return $output;
	}

	public function json_convert_string( $str ) {
		if ( function_exists( 'mb_convert_encoding' ) ) {
			$encoding = mb_detect_encoding( $str, mb_detect_order(), true );
			if ( $encoding ) {
				return mb_convert_encoding( $str, 'UTF-8', $encoding );
			} else {
				return mb_convert_encoding( $str, 'UTF-8', 'UTF-8' );
			}
		}
		return $str;
	}

	public static function safe_json_encode( $value, $options = 0, $depth = 512 ) {
		$encoded = json_encode( $value, $options, $depth );
		if ( false === $encoded && ! empty( $value ) && JSON_ERROR_UTF8 == json_last_error() ) {
			$encoded = json_encode( self::json_valid_check( $value ), $options, $depth );
		}
		return $encoded;
	}

	public static function close_connection( $val = null ) {

		if ( isset( $_REQUEST['json_result'] ) && true == $_REQUEST['json_result'] ) :
			$output = self::safe_json_encode( $val );
		else :
			$output = serialize( $val ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.
		endif;

		$output = '<mainwp>' . base64_encode( $output ) . '</mainwp>'; // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions -- base64_encode function is used for benign reasons.
		// Close browser connection so that it can resume AJAX polling.
		header( 'Content-Length: ' . strlen( $output ) );
		header( 'Connection: close' );
		header( 'Content-Encoding: none' );
		if ( session_id() ) {
			session_write_close();
		}
		echo $output;
		if ( ob_get_level() ) {
			ob_end_flush();
		}
		flush();
	}

	public static function error( $error, $code = null ) {
		$information['error'] = $error;
		if ( null !== $code ) {
			$information['error_code'] = $code;
		}
		self::write( $information );
	}

	/**
	 * PARSE
	 * Parses some CSS into an array
	 * CSSPARSER
	 * Copyright (C) 2009 Peter Kröner
	 */
	public static function parse_css( $css ) {

		// Remove CSS-Comments.
		$css = preg_replace( '/\/\*.*?\*\//ms', '', $css );
		// Remove HTML-Comments.
		$css = preg_replace( '/([^\'"]+?)(\<!--|--\>)([^\'"]+?)/ms', '$1$3', $css );
		// Extract @media-blocks into $blocks.
		preg_match_all( '/@.+?\}[^\}]*?\}/ms', $css, $blocks );
		// Append the rest to $blocks.
		array_push( $blocks[0], preg_replace( '/@.+?\}[^\}]*?\}/ms', '', $css ) );
		$ordered      = array();
		$count_blocks = count( $blocks[0] );
		for ( $i = 0; $i < $count_blocks; $i++ ) {
			// If @media-block, strip declaration and parenthesis.
			if ( '@media' === substr( $blocks[0][ $i ], 0, 6 ) ) {
				$ordered_key   = preg_replace( '/^(@media[^\{]+)\{.*\}$/ms', '$1', $blocks[0][ $i ] );
				$ordered_value = preg_replace( '/^@media[^\{]+\{(.*)\}$/ms', '$1', $blocks[0][ $i ] );
			} elseif ( '@' === substr( $blocks[0][ $i ], 0, 1 ) ) {
				$ordered_key   = $blocks[0][ $i ];
				$ordered_value = $blocks[0][ $i ];
			} else {
				$ordered_key   = 'main';
				$ordered_value = $blocks[0][ $i ];
			}
			// Split by parenthesis, ignoring those inside content-quotes.
			$ordered[ $ordered_key ] = preg_split( '/([^\'"\{\}]*?[\'"].*?(?<!\\\)[\'"][^\'"\{\}]*?)[\{\}]|([^\'"\{\}]*?)[\{\}]/', trim( $ordered_value, " \r\n\t" ), -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE );
		}

		// Beginning to rebuild new slim CSS-Array.
		foreach ( $ordered as $key => $val ) {
			$new       = array();
			$count_val = count( $val );
			for ( $i = 0; $i < $count_val; $i++ ) {
				// Split selectors and rules and split properties and values.
				$selector = trim( $val[ $i ], " \r\n\t" );

				if ( ! empty( $selector ) ) {
					if ( ! isset( $new[ $selector ] ) ) {
						$new[ $selector ] = array();
					}
					$rules = explode( ';', $val[ ++$i ] );
					foreach ( $rules as $rule ) {
						$rule = trim( $rule, " \r\n\t" );
						if ( ! empty( $rule ) ) {
							$rule     = array_reverse( explode( ':', $rule ) );
							$property = trim( array_pop( $rule ), " \r\n\t" );
							$value    = implode( ':', array_reverse( $rule ) );

							if ( ! isset( $new[ $selector ][ $property ] ) || ! preg_match( '/!important/', $new[ $selector ][ $property ] ) ) {
								$new[ $selector ][ $property ] = $value;
							} elseif ( preg_match( '/!important/', $new[ $selector ][ $property ] ) && preg_match( '/!important/', $value ) ) {
								$new[ $selector ][ $property ] = $value;
							}
						}
					}
				}
			}
			$ordered[ $key ] = $new;
		}
		$parsed = $ordered;

		$output = '';
		foreach ( $parsed as $media => $content ) {
			if ( '@media' === substr( $media, 0, 6 ) ) {
				$output .= $media . " {\n";
				$prefix  = "\t";
			} else {
				$prefix = '';
			}

			foreach ( $content as $selector => $rules ) {
				$output .= $prefix . $selector . " {\n";
				foreach ( $rules as $property => $value ) {
					$output .= $prefix . "\t" . $property . ': ' . $value;
					$output .= ";\n";
				}
				$output .= $prefix . "}\n\n";
			}
			if ( '@media' === substr( $media, 0, 6 ) ) {
				$output .= "}\n\n";
			}
		}
		return $output;
	}

	// $check_file_existed: to support checking if file existed.
	// $parent_id: optional.
	public static function uploadImage( $img_url, $img_data = array(), $check_file_existed = false, $parent_id = 0 ) {
		if ( ! is_array( $img_data ) ) {
			$img_data = array();
		}
		global $mainWPChild;
		include_once ABSPATH . 'wp-admin/includes/file.php';
		$upload_dir = wp_upload_dir();
		add_filter( 'http_request_args', array( $mainWPChild, 'http_request_reject_unsafe_urls' ), 99, 2 );
		$temporary_file = download_url( $img_url );
		remove_filter( 'http_request_args', array( $mainWPChild, 'http_request_reject_unsafe_urls' ), 99, 2 );

		if ( is_wp_error( $temporary_file ) ) {
			throw new Exception( 'Error: ' . $temporary_file->get_error_message() );
		} else {
			$filename       = basename( $img_url );
			$local_img_path = $upload_dir['path'] . DIRECTORY_SEPARATOR . $filename;
			$local_img_url  = $upload_dir['url'] . '/' . basename( $local_img_path );

			// to fix issue re-create new attachment.
			if ( $check_file_existed ) {
				if ( file_exists( $local_img_path ) ) {

					if ( filesize( $local_img_path ) == filesize( $temporary_file ) ) {
						$result = self::get_maybe_existed_attached_id( $local_img_url );
						if ( is_array( $result ) ) {
							$attach = current( $result );
							if ( is_object( $attach ) ) {
								if ( file_exists( $temporary_file ) ) {
									unlink( $temporary_file );
								}
								return array(
									'id'  => $attach->ID,
									'url' => $local_img_url,
								);
							}
						}
					}
				} else {
					$result = self::get_maybe_existed_attached_id( $filename, false );
					if ( is_array( $result ) ) {
						$attach = current( $result );
						if ( is_object( $attach ) ) {
							$basedir        = $upload_dir['basedir'];
							$baseurl        = $upload_dir['baseurl'];
							$local_img_path = str_replace( $baseurl, $basedir, $attach->guid );
							if ( file_exists( $local_img_path ) && ( filesize( $local_img_path ) == filesize( $temporary_file ) ) ) {
								if ( file_exists( $temporary_file ) ) {
									unlink( $temporary_file );
								}
								return array(
									'id'  => $attach->ID,
									'url' => $attach->guid,
								);
							}
						}
					}
				}
			}

			// file exists, do not overwrite, generate unique file name.
			// this may causing of issue incorrect source of image in post content.
			if ( file_exists( $local_img_path ) ) {
				$local_img_path = dirname( $local_img_path ) . '/' . wp_unique_filename( dirname( $local_img_path ), basename( $local_img_path ) );
				$local_img_url  = $upload_dir['url'] . '/' . basename( $local_img_path );
			}

			$moved = rename( $temporary_file, $local_img_path );

			if ( $moved ) {
				$wp_filetype = wp_check_filetype( basename( $img_url ), null ); // Get the filetype to set the mimetype.
				$attachment  = array(
					'post_mime_type' => $wp_filetype['type'],
					'post_title'     => isset( $img_data['title'] ) && ! empty( $img_data['title'] ) ? $img_data['title'] : preg_replace( '/\.[^.]+$/', '', basename( $img_url ) ),
					'post_content'   => isset( $img_data['description'] ) && ! empty( $img_data['description'] ) ? $img_data['description'] : '',
					'post_excerpt'   => isset( $img_data['caption'] ) && ! empty( $img_data['caption'] ) ? $img_data['caption'] : '',
					'post_status'    => 'inherit',
					'guid'           => $local_img_url,
				);

				// for post attachments, thumbnail.
				if ( $parent_id ) {
					$attachment['post_parent'] = $parent_id;
				}

				$attach_id = wp_insert_attachment( $attachment, $local_img_path ); // Insert the image in the database.
				require_once ABSPATH . 'wp-admin/includes/image.php';
				$attach_data = wp_generate_attachment_metadata( $attach_id, $local_img_path );
				wp_update_attachment_metadata( $attach_id, $attach_data ); // Update generated metadata.
				if ( isset( $img_data['alt'] ) && ! empty( $img_data['alt'] ) ) {
					update_post_meta( $attach_id, '_wp_attachment_image_alt', $img_data['alt'] );
				}
				return array(
					'id'  => $attach_id,
					'url' => $local_img_url,
				);
			}
		}
		if ( file_exists( $temporary_file ) ) {
			unlink( $temporary_file );
		}

		return null;
	}

	public static function get_maybe_existed_attached_id( $filename, $full_guid = true ) {
		global $wpdb;
		if ( $full_guid ) {
			$sql = $wpdb->prepare(
				"SELECT ID,guid FROM $wpdb->posts WHERE post_type = 'attachment' AND guid = %s",
				$filename
			);
		} else {
			$sql = "SELECT ID,guid FROM $wpdb->posts WHERE post_type = 'attachment' AND guid LIKE '%/" . $filename . "'";
		}
		return $wpdb->get_results( $sql );
	}

	public static function uploadFile( $file_url, $path, $file_name ) {
		// to fix uploader extension rename htaccess file issue.
		if ( '.htaccess' != $file_name && '.htpasswd' != $file_name ) {
			$file_name = sanitize_file_name( $file_name );
		}

		$full_file_name = $path . DIRECTORY_SEPARATOR . $file_name;

		$response = wp_remote_get(
			$file_url,
			array(
				'timeout'  => 10 * 60 * 60,
				'stream'   => true,
				'filename' => $full_file_name,
			)
		);

		if ( is_wp_error( $response ) ) {
			unlink( $full_file_name );
			throw new Exception( 'Error: ' . $response->get_error_message() );
		}

		if ( 200 !== (int) wp_remote_retrieve_response_code( $response ) ) {
			unlink( $full_file_name );
			throw new Exception( 'Error 404: ' . trim( wp_remote_retrieve_response_message( $response ) ) );
		}
		if ( '.phpfile.txt' === substr( $file_name, - 12 ) ) {
			$new_file_name = substr( $file_name, 0, - 12 ) . '.php';
			$new_file_name = $path . DIRECTORY_SEPARATOR . $new_file_name;
			$moved         = rename( $full_file_name, $new_file_name );
			if ( $moved ) {
				return array( 'path' => $new_file_name );
			} else {
				unlink( $full_file_name );
				throw new Exception( 'Error: Copy file.' );
			}
		}

		return array( 'path' => $full_file_name );
	}

	public static function createPost( $new_post, $post_custom, $post_category, $post_featured_image, $upload_dir, $post_tags, $others = array() ) {
		global $current_user;

		/**
		* Hook: `mainwp_before_post_update`
		*
		* Runs before creating or updating a post via MainWP dashboard.
		*
		* @param array  $new_post      – Post data array.
		* @param array  $post_custom   – Post custom meta data.
		* @param string $post_category – Post categories.
		* @param string $post_tags     – Post tags.
		*/

		do_action( 'mainwp_before_post_update', $new_post, $post_custom, $post_category, $post_tags );

		// Options fields.
		$wprocket_fields = array(
			'lazyload',
			'lazyload_iframes',
			'minify_html',
			'minify_css',
			'minify_js',
			'cdn',
			'async_css',
			'defer_all_js',
		);

		$wprocket_activated = false;
		if ( MainWP_Child_WP_Rocket::Instance()->isActivated() ) {
			if ( function_exists( 'get_rocket_option' ) ) {
				$wprocket_activated = true;
				foreach ( $wprocket_fields as $field ) {
					if ( ! isset( $post_custom[ '_rocket_exclude_' . $field ] ) ) {
						if ( ! get_rocket_option( $field ) ) {
							$post_custom[ '_rocket_exclude_' . $field ] = array( true );
						}
					}
				}
			}
		}

		if ( ! $wprocket_activated ) {
			foreach ( $wprocket_fields as $field ) {
				if ( isset( $post_custom[ '_rocket_exclude_' . $field ] ) ) {
					unset( $post_custom[ '_rocket_exclude_' . $field ] );
				}
			}
		}

		// current user may be connected admin or alternative admin.
		$current_uid = $current_user->ID;
		// Set up a new post (adding addition information).

		$post_author = isset( $new_post['post_author'] ) ? $new_post['post_author'] : $current_uid;
		
		if ( isset( $new_post['custom_post_author'] ) && ! empty( $new_post['custom_post_author'] ) ) {
			$_author = get_user_by( 'login', $new_post['custom_post_author'] );
			if ( ! empty( $_author ) ) {
				$new_post['post_author'] = $_author->ID;
			} else {
				$new_post['post_author'] = $current_uid;
			}
			unset( $new_post['custom_post_author'] );
		}

		$post_author             = ! empty( $post_author ) ? $post_author : $current_uid;
		$new_post['post_author'] = $post_author;

		$terms         = isset( $new_post['_ezin_post_category'] ) ? $new_post['_ezin_post_category'] : false;
		unset( $new_post['_ezin_post_category'] );
		$is_post_plus = isset( $post_custom['_mainwp_post_plus'] ) ? true : false;

		$wp_error = null;

		if ( $is_post_plus ) {
			if ( isset( $new_post['post_date_gmt'] ) && ! empty( $new_post['post_date_gmt'] ) && '0000-00-00 00:00:00' != $new_post['post_date_gmt'] ) {
				$post_date_timestamp   = strtotime( $new_post['post_date_gmt'] ) + get_option( 'gmt_offset' ) * 60 * 60;
				$new_post['post_date'] = date( 'Y-m-d H:i:s', $post_date_timestamp );
			}
		}

		$wpr_options = isset( $_POST['wpr_options'] ) ? $_POST['wpr_options'] : array();

		$edit_post_id = 0;

		if ( isset( $post_custom['_mainwp_edit_post_id'] ) && $post_custom['_mainwp_edit_post_id'] ) {
			$edit_post_id = current( $post_custom['_mainwp_edit_post_id'] );
		} elseif ( isset( $new_post['ID'] ) && $new_post['ID'] ) {
			$edit_post_id = $new_post['ID'];
		}

		require_once ABSPATH . 'wp-admin/includes/post.php';
		if ( $edit_post_id ) {
			$user_id = wp_check_post_lock( $edit_post_id );
			if ( $user_id ) {
				$user  = get_userdata( $user_id );
				$error = sprintf( __( 'This content is currently locked. %s is currently editing.', 'mainwp-child' ), $user->display_name );
				return array( 'error' => $error );
			}
		}

		$check_image_existed = false;
		if ( $edit_post_id ) {
			$check_image_existed = true; // if editing post then will check if image existed.
		}

		// Search for all the images added to the new post. Some images have a href tag to click to navigate to the image.. we need to replace this too.
		$foundMatches = preg_match_all( '/(<a[^>]+href=\"(.*?)\"[^>]*>)?(<img[^>\/]*src=\"((.*?)(png|gif|jpg|jpeg))\")/ix', $new_post['post_content'], $matches, PREG_SET_ORDER );
		if ( $foundMatches > 0 ) {
			// We found images, now to download them so we can start balbal.
			foreach ( $matches as $match ) {
				$hrefLink = $match[2];
				$imgUrl   = $match[4];

				if ( ! isset( $upload_dir['baseurl'] ) || ( 0 !== strripos( $imgUrl, $upload_dir['baseurl'] ) ) ) {
					continue;
				}

				if ( preg_match( '/-\d{3}x\d{3}\.[a-zA-Z0-9]{3,4}$/', $imgUrl, $imgMatches ) ) {
					$search         = $imgMatches[0];
					$replace        = '.' . $match[6];
					$originalImgUrl = str_replace( $search, $replace, $imgUrl );
				} else {
					$originalImgUrl = $imgUrl;
				}

				try {
					$downloadfile      = self::uploadImage( $originalImgUrl, array(), $check_image_existed );
					$localUrl          = $downloadfile['url'];
					$linkToReplaceWith = dirname( $localUrl );
					if ( '' !== $hrefLink ) {
						$server     = get_option( 'mainwp_child_server' );
						$serverHost = wp_parse_url( $server, PHP_URL_HOST );
						if ( ! empty( $serverHost ) && strpos( $hrefLink, $serverHost ) !== false ) {
							$serverHref               = 'href="' . $serverHost;
							$replaceServerHref        = 'href="' . wp_parse_url( $localUrl, PHP_URL_SCHEME ) . '://' . wp_parse_url( $localUrl, PHP_URL_HOST );
							$new_post['post_content'] = str_replace( $serverHref, $replaceServerHref, $new_post['post_content'] );
						}
					}
					$lnkToReplace = dirname( $imgUrl );
					if ( 'http:' !== $lnkToReplace && 'https:' !== $lnkToReplace ) {
						$new_post['post_content'] = str_replace( $lnkToReplace, $linkToReplaceWith, $new_post['post_content'] );
					}
				} catch ( Exception $e ) {
					error_log( $e->getMessage() );
				}
			}
		}

		if ( has_shortcode( $new_post['post_content'], 'gallery' ) ) {
			if ( preg_match_all( '/\[gallery[^\]]+ids=\"(.*?)\"[^\]]*\]/ix', $new_post['post_content'], $matches, PREG_SET_ORDER ) ) {
				$replaceAttachedIds = array();
				if ( isset( $_POST['post_gallery_images'] ) ) {
					$post_gallery_images = unserialize( base64_decode( $_POST['post_gallery_images'] ) ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions -- base64_encode function is used for benign reasons.
					if ( is_array( $post_gallery_images ) ) {
						foreach ( $post_gallery_images as $gallery ) {
							if ( isset( $gallery['src'] ) ) {
								try {
									$upload = self::uploadImage( $gallery['src'], $gallery ); // Upload image to WP.
									if ( null !== $upload ) {
										$replaceAttachedIds[ $gallery['id'] ] = $upload['id'];
									}
								} catch ( Exception $e ) {
									// ok!
								}
							}
						}
					}
				}
				if ( count( $replaceAttachedIds ) > 0 ) {
					foreach ( $matches as $match ) {
						$idsToReplace     = $match[1];
						$idsToReplaceWith = '';
						$originalIds      = explode( ',', $idsToReplace );
						foreach ( $originalIds as $attached_id ) {
							if ( ! empty( $originalIds ) && isset( $replaceAttachedIds[ $attached_id ] ) ) {
								$idsToReplaceWith .= $replaceAttachedIds[ $attached_id ] . ',';
							}
						}
						$idsToReplaceWith = rtrim( $idsToReplaceWith, ',' );
						if ( ! empty( $idsToReplaceWith ) ) {
							$new_post['post_content'] = str_replace( '"' . $idsToReplace . '"', '"' . $idsToReplaceWith . '"', $new_post['post_content'] );
						}
					}
				}
			}
		}

		if ( $is_post_plus ) {
			$random_publish_date = isset( $post_custom['_saved_draft_random_publish_date'] ) ? $post_custom['_saved_draft_random_publish_date'] : false;
			$random_publish_date = is_array( $random_publish_date ) ? current( $random_publish_date ) : null;
			if ( ! empty( $random_publish_date ) ) {
				$random_date_from = isset( $post_custom['_saved_draft_publish_date_from'] ) ? $post_custom['_saved_draft_publish_date_from'] : 0;
				$random_date_from = is_array( $random_date_from ) ? current( $random_date_from ) : 0;

				$random_date_to = isset( $post_custom['_saved_draft_publish_date_to'] ) ? $post_custom['_saved_draft_publish_date_to'] : 0;
				$random_date_to = is_array( $random_date_to ) ? current( $random_date_to ) : 0;

				$now = current_time( 'timestamp' );

				if ( empty( $random_date_from ) ) {
					$random_date_from = $now;
				}

				if ( empty( $random_date_to ) ) {
					$random_date_to = $now;
				}

				if ( $random_date_from === $now && $random_date_from === $random_date_to ) {
					$random_date_to = $now + 7 * 24 * 3600;
				}

				if ( $random_date_from > $random_date_to ) {
					$tmp              = $random_date_from;
					$random_date_from = $random_date_to;
					$random_date_to   = $tmp;
				}

				$random_timestamp      = wp_rand( $random_date_from, $random_date_to );
				$new_post['post_date'] = date( 'Y-m-d H:i:s', $random_timestamp );
			}
		}

		if ( isset( $post_tags ) && '' !== $post_tags ) {
			$new_post['tags_input'] = $post_tags;
		}

		// Save the post to the WP.
		remove_filter( 'content_save_pre', 'wp_filter_post_kses' );  // to fix brake scripts or html.
		$post_status             = $new_post['post_status'];
		$new_post['post_status'] = 'auto-draft'; // child reports: to logging as created post.

		// update post.
		if ( $edit_post_id ) {
			// check if post existed.
			$current_post = get_post( $edit_post_id );
			if ( $current_post && ( ( ! isset( $new_post['post_type'] ) && 'post' == $current_post->post_type ) || ( isset( $new_post['post_type'] ) && $new_post['post_type'] == $current_post->post_type ) ) ) {
				$new_post['ID'] = $edit_post_id;
			}
			$new_post['post_status'] = $post_status; // child reports: to logging as update post.
		}

		$new_post_id = wp_insert_post( $new_post, $wp_error );

		// Show errors if something went wrong.
		if ( is_wp_error( $wp_error ) ) {
			return $wp_error->get_error_message();
		}
		if ( empty( $new_post_id ) ) {
			return array( 'error' => 'Empty post id' );
		}

		if ( ! $edit_post_id ) {
			wp_update_post(
				array(
					'ID'          => $new_post_id,
					'post_status' => $post_status,
				)
			);
		}

		if ( ! empty( $terms ) ) {
			wp_set_object_terms( $new_post_id, array_map( intval, $terms ), 'category' );
		}

		$permalink = get_permalink( $new_post_id );

		$seo_ext_activated = false;

		if ( class_exists( 'WPSEO_Meta' ) && class_exists( 'WPSEO_Admin' ) ) {
			$seo_ext_activated = true;
		}

		// Set custom fields.
		$not_allowed   = array(
			'_slug',
			'_tags',
			'_edit_lock',
			'_selected_sites',
			'_selected_groups',
			'_selected_by',
			'_categories',
			'_edit_last',
			'_sticky',
			'_mainwp_post_dripper',
			'_bulkpost_do_not_del',
			'_mainwp_spin_me',
		);
		$not_allowed[] = '_mainwp_boilerplate_sites_posts';
		$not_allowed[] = '_ezine_post_keyword';
		$not_allowed[] = '_ezine_post_display_sig';
		$not_allowed[] = '_ezine_post_remove_link';
		$not_allowed[] = '_ezine_post_grab_image';
		$not_allowed[] = '_ezine_post_grab_image_placement';
		$not_allowed[] = '_ezine_post_template_id';

		$not_allowed[] = '_mainwp_post_plus';
		$not_allowed[] = '_saved_as_draft';
		$not_allowed[] = '_saved_draft_categories';
		$not_allowed[] = '_saved_draft_tags';
		$not_allowed[] = '_saved_draft_random_privelege';
		$not_allowed[] = '_saved_draft_random_category';
		$not_allowed[] = '_saved_draft_random_publish_date';
		$not_allowed[] = '_saved_draft_publish_date_from';
		$not_allowed[] = '_saved_draft_publish_date_to';
		$not_allowed[] = '_post_to_only_existing_categories';		
		$not_allowed[] = '_mainwp_edit_post_site_id';
		$not_allowed[] = '_mainwp_edit_post_id';
		$not_allowed[] = '_edit_post_status';

		$post_to_only_existing_categories = false;

		if ( is_array( $post_custom ) ) {
			foreach ( $post_custom as $meta_key => $meta_values ) {
				if ( ! in_array( $meta_key, $not_allowed ) ) {
					foreach ( $meta_values as $meta_value ) {
						if ( 0 === strpos( $meta_key, '_mainwp_spinner_' ) ) {
							continue;
						}

						if ( ! $seo_ext_activated ) {
							// if WordPress SEO plugin is not activated do not save yoast post meta.
							if ( false === strpos( $meta_key, '_yoast_wpseo_' ) ) {
								update_post_meta( $new_post_id, $meta_key, $meta_value );
							}
						} else {
							update_post_meta( $new_post_id, $meta_key, $meta_value );
						}
					}
				} elseif ( '_sticky' === $meta_key ) {
					foreach ( $meta_values as $meta_value ) {
						if ( 'sticky' === base64_decode( $meta_value ) ) { // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions -- base64_encode function is used for benign reasons.
							stick_post( $new_post_id );
						}
					}
				} elseif ( '_post_to_only_existing_categories' === $meta_key ) {
					if ( isset( $meta_values[0] ) && $meta_values[0] ) {
						$post_to_only_existing_categories = true;
					}
				}
			}
		}

		// yoast seo extension.
		if ( $seo_ext_activated ) {
			$_seo_opengraph_image = isset( $post_custom[ WPSEO_Meta::$meta_prefix . 'opengraph-image' ] ) ? $post_custom[ WPSEO_Meta::$meta_prefix . 'opengraph-image' ] : array();
			$_seo_opengraph_image = current( $_seo_opengraph_image );
			$_server_domain       = '';
			$_server              = get_option( 'mainwp_child_server' );
			if ( preg_match( '/(https?:\/\/[^\/]+\/).+/', $_server, $matchs ) ) {
				$_server_domain = isset( $matchs[1] ) ? $matchs[1] : '';
			}

			// upload image if it on the server.
			if ( ! empty( $_seo_opengraph_image ) && false !== strpos( $_seo_opengraph_image, $_server_domain ) ) {
				try {
					$upload = self::uploadImage( $_seo_opengraph_image ); // Upload image to WP.
					if ( null !== $upload ) {
						update_post_meta( $new_post_id, WPSEO_Meta::$meta_prefix . 'opengraph-image', $upload['url'] ); // Add the image to the post!
					}
				} catch ( Exception $e ) {
					// ok!
				}
			}
		}

		// If categories exist, create them (second parameter of wp_create_categories adds the categories to the post).
		include_once ABSPATH . 'wp-admin/includes/taxonomy.php'; // Contains wp_create_categories.
		if ( isset( $post_category ) && '' !== $post_category ) {
			$categories = explode( ',', $post_category );
			if ( count( $categories ) > 0 ) {
				if ( ! $post_to_only_existing_categories ) {
					$post_category = wp_create_categories( $categories, $new_post_id );
				} else {
					$cat_ids = array();
					foreach ( $categories as $cat ) {
						$id = category_exists( $cat );
						if ( $id ) {
							$cat_ids[] = $id;
						}
					}
					if ( count( $cat_ids ) > 0 ) {
						wp_set_post_categories( $new_post_id, $cat_ids );
					}
				}
			}
		}

		$featured_image_exist = false;
		// If featured image exists - set it.
		if ( null !== $post_featured_image ) {
			try {
				$upload = self::uploadImage( $post_featured_image, array(), $check_image_existed, $new_post_id ); // Upload image to WP.
				if ( null !== $upload ) {
					update_post_meta( $new_post_id, '_thumbnail_id', $upload['id'] ); // Add the thumbnail to the post!
					$featured_image_exist = true;
					if ( isset( $others['featured_image_data'] ) ) {
						$_image_data = $others['featured_image_data'];
						update_post_meta( $upload['id'], '_wp_attachment_image_alt', $_image_data['alt'] );
						wp_update_post(
							array(
								'ID'           => $upload['id'],
								'post_excerpt' => $_image_data['caption'],
								'post_content' => $_image_data['description'],
								'post_title'   => $_image_data['title'],
							)
						);
					}
				}
			} catch ( Exception $e ) {
				// ok!
			}
		}

		if ( ! $featured_image_exist ) {
			delete_post_meta( $new_post_id, '_thumbnail_id' );
		}

		// post plus extension process.
		if ( $is_post_plus ) {
			$random_privelege      = isset( $post_custom['_saved_draft_random_privelege'] ) ? $post_custom['_saved_draft_random_privelege'] : null;
			$random_privelege      = is_array( $random_privelege ) ? current( $random_privelege ) : null;
			$random_privelege_base = base64_decode( $random_privelege ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions -- base64_encode function is used for benign reasons.
			$random_privelege      = maybe_unserialize( $random_privelege_base );

			if ( is_array( $random_privelege ) && count( $random_privelege ) > 0 ) {
				$random_post_authors = array();
				foreach ( $random_privelege as $role ) {
					$users = get_users( array( 'role' => $role ) );
					foreach ( $users as $user ) {
						$random_post_authors[] = $user->ID;
					}
				}
				if ( count( $random_post_authors ) > 0 ) {
					shuffle( $random_post_authors );
					$key = array_rand( $random_post_authors );
					wp_update_post(
						array(
							'ID'          => $new_post_id,
							'post_author' => $random_post_authors[ $key ],
						)
					);
				}
			}

			$random_category = isset( $post_custom['_saved_draft_random_category'] ) ? $post_custom['_saved_draft_random_category'] : false;
			$random_category = is_array( $random_category ) ? current( $random_category ) : null;
			if ( ! empty( $random_category ) ) {
				$cats        = get_categories(
					array(
						'type'       => 'post',
						'hide_empty' => 0,
					)
				);
				$random_cats = array();
				if ( is_array( $cats ) ) {
					foreach ( $cats as $cat ) {
						$random_cats[] = $cat->term_id;
					}
				}
				if ( count( $random_cats ) > 0 ) {
					shuffle( $random_cats );
					$key = array_rand( $random_cats );
					wp_set_post_categories( $new_post_id, array( $random_cats[ $key ] ), false );
				}
			}
		} // end of post plus.

		// to support custom post author.
		$custom_post_author = apply_filters( 'mainwp_create_post_custom_author', false, $new_post_id );
		if ( ! empty( $custom_post_author ) ) {
			wp_update_post(
				array(
					'ID'          => $new_post_id,
					'post_author' => $custom_post_author,
				)
			);
		}

		// unlock if edit post.
		if ( $edit_post_id ) {
			update_post_meta( $edit_post_id, '_edit_lock', '' );
		}

		$ret['success']  = true;
		$ret['link']     = $permalink;
		$ret['added_id'] = $new_post_id;

		return $ret;
	}

	public static function getMainWPDir( $what = null, $dieOnError = true ) {
		$upload_dir = wp_upload_dir();
		$dir        = $upload_dir['basedir'] . DIRECTORY_SEPARATOR . 'mainwp' . DIRECTORY_SEPARATOR;
		self::checkDir( $dir, $dieOnError );
		if ( ! file_exists( $dir . 'index.php' ) ) {
			touch( $dir . 'index.php' );
		}
		$url = $upload_dir['baseurl'] . '/mainwp/';

		if ( 'backup' === $what ) {
			$dir .= 'backup' . DIRECTORY_SEPARATOR;
			self::checkDir( $dir, $dieOnError );
			if ( ! file_exists( $dir . 'index.php' ) ) {
				touch( $dir . 'index.php' );
			}

			$another_name = '.htaccess';
			if ( ! file_exists( $dir . $another_name ) ) {
				$file = fopen( $dir . $another_name, 'w+' );
				fwrite( $file, 'deny from all' );
				fclose( $file );
			}
			$url .= 'backup/';
		}

		return array( $dir, $url );
	}

	public static function checkDir( $dir, $dieOnError, $chmod = 0755 ) {
		self::getWPFilesystem();
		global $wp_filesystem;
		if ( ! file_exists( $dir ) ) {
			if ( empty( $wp_filesystem ) ) {
				mkdir( $dir, $chmod, true );
			} else {
				if ( ( 'ftpext' === $wp_filesystem->method ) && defined( 'FTP_BASE' ) ) {
					$ftpBase = FTP_BASE;
					$ftpBase = trailingslashit( $ftpBase );
					$tmpdir  = str_replace( ABSPATH, $ftpBase, $dir );
				} else {
					$tmpdir = $dir;
				}
				$wp_filesystem->mkdir( $tmpdir, $chmod );
			}

			if ( ! file_exists( $dir ) ) {
				$error = __( 'Unable to create directory ', 'mainwp-child' ) . str_replace( ABSPATH, '', $dir ) . '.' . __( ' Is its parent directory writable by the server?', 'mainwp-child' );
				if ( $dieOnError ) {
					self::error( $error );
				} else {
					throw new Exception( $error );
				}
			}
		}
	}

	public static function validateMainWPDir() {
		$done = false;
		$dir  = self::getMainWPDir();
		$dir  = $dir[0];
		if ( self::getWPFilesystem() ) {
			global $wp_filesystem;
			try {
				self::checkDir( $dir, false );
			} catch ( Exception $e ) {
				// ok!
			}
			if ( ! empty( $wp_filesystem ) ) {
				if ( $wp_filesystem->is_writable( $dir ) ) {
					$done = true;
				}
			}
		}

		if ( ! $done ) {
			if ( ! file_exists( $dir ) ) {
				mkdirs( $dir );
			}
			if ( is_writable( $dir ) ) {
				$done = true;
			}
		}

		return $done;
	}

	public static function search( $array, $key ) {
		if ( is_object( $array ) ) {
			$array = (array) $array;
		}
		if ( is_array( $array ) || is_object( $array ) ) {
			if ( isset( $array[ $key ] ) ) {
				return $array[ $key ];
			}

			foreach ( $array as $subarray ) {
				$result = self::search( $subarray, $key );
				if ( null !== $result ) {
					return $result;
				}
			}
		}

		return null;
	}

	/**
	 * @return WP_Filesystem_Base
	 */
	public static function getWPFilesystem() {
		global $wp_filesystem;

		if ( empty( $wp_filesystem ) ) {
			ob_start();
			if ( file_exists( ABSPATH . '/wp-admin/includes/screen.php' ) ) {
				include_once ABSPATH . '/wp-admin/includes/screen.php';
			}
			if ( file_exists( ABSPATH . '/wp-admin/includes/template.php' ) ) {
				include_once ABSPATH . '/wp-admin/includes/template.php';
			}
			$creds = request_filesystem_credentials( 'test' );
			ob_end_clean();
			if ( empty( $creds ) ) {
				if ( ! defined( 'MAINWP_SAVE_FS_METHOD' ) ) {
					define( 'MAINWP_SAVE_FS_METHOD', get_filesystem_method() );
				}
				define( 'FS_METHOD', 'direct' );
			}
			$init = WP_Filesystem( $creds );
		} else {
			$init = true;
		}

		return $init;
	}

	public static function startsWith( $haystack, $needle ) {
		return ! strncmp( $haystack, $needle, strlen( $needle ) );
	}

	public static function endsWith( $haystack, $needle ) {
		$length = strlen( $needle );
		if ( 0 == $length ) {
			return true;
		}

		return ( substr( $haystack, - $length ) == $needle );
	}

	public static function getNiceURL( $pUrl, $showHttp = false ) {
		$url = $pUrl;

		if ( self::startsWith( $url, 'http://' ) ) {
			if ( ! $showHttp ) {
				$url = substr( $url, 7 );
			}
		} elseif ( self::startsWith( $pUrl, 'https://' ) ) {
			if ( ! $showHttp ) {
				$url = substr( $url, 8 );
			}
		} else {
			if ( $showHttp ) {
				$url = 'http://' . $url;
			}
		}

		if ( self::endsWith( $url, '/' ) ) {
			if ( ! $showHttp ) {
				$url = substr( $url, 0, strlen( $url ) - 1 );
			}
		} else {
			$url = $url . '/';
		}

		return $url;
	}

	public static function clean( $string ) {
		$string = trim( $string );
		$string = htmlentities( $string, ENT_QUOTES );
		$string = str_replace( "\n", '<br>', $string );		
		$string = stripslashes( $string );
		return $string;
	}

	public static function endSession() {
		session_write_close();
		ob_end_flush();
	}

	public static function fetchUrl( $url, $postdata ) {
		try {
			$tmpUrl = $url;
			if ( '/' !== substr( $tmpUrl, - 1 ) ) {
				$tmpUrl .= '/';
			}

			return self::_fetchUrl( $tmpUrl . 'wp-admin/', $postdata );
		} catch ( Exception $e ) {
			try {
				return self::_fetchUrl( $url, $postdata );
			} catch ( Exception $ex ) {
				throw $e;
			}
		}
	}

	public static function _fetchUrl( $url, $postdata ) {
		$agent = 'Mozilla/5.0 (compatible; MainWP-Child/' . MainWP_Child::$version . '; +http://mainwp.com)';

		if ( ! is_array( $postdata ) ) {
			$postdata = array();
		}

		$postdata['json_result'] = true; // forced all response in json format.

		$ch = curl_init();
		curl_setopt( $ch, CURLOPT_URL, $url );
		curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
		curl_setopt( $ch, CURLOPT_POST, true );
		curl_setopt( $ch, CURLOPT_POSTFIELDS, $postdata );
		curl_setopt( $ch, CURLOPT_CONNECTTIMEOUT, 10 );
		curl_setopt( $ch, CURLOPT_USERAGENT, $agent );
		$data        = curl_exec( $ch );
		$http_status = curl_getinfo( $ch, CURLINFO_HTTP_CODE );
		$err         = curl_error( $ch );
		curl_close( $ch );

		if ( ( false === $data ) && ( 0 === $http_status ) ) {
			throw new Exception( 'Http Error: ' . $err );
		} elseif ( preg_match( '/<mainwp>(.*)<\/mainwp>/', $data, $results ) > 0 ) {
			$result      = $results[1];
			$result_base = base64_decode( $result ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions -- base64_encode function is used for benign reasons.

			$information = json_decode( $result_base, true ); // it is json_encode result.

			return $information;
		} elseif ( '' === $data ) {
			throw new Exception( __( 'Something went wrong while contacting the child site. Please check if there is an error on the child site. This error could also be caused by trying to clone or restore a site to large for your server settings.', 'mainwp-child' ) );
		} else {
			throw new Exception( __( 'Child plugin is disabled or the security key is incorrect. Please resync with your main installation.', 'mainwp-child' ) );
		}
	}


	public static function randString( $length, $charset = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789' ) {
		$str   = '';
		$count = strlen( $charset );
		while ( $length -- ) {
			$str .= $charset[ mt_rand( 0, $count - 1 ) ]; // phpcs:ignore
		}

		return $str;
	}

	public static function return_bytes( $val ) {
		$val  = trim( $val );
		$last = $val[ strlen( $val ) - 1 ];
		$val  = rtrim( $val, $last );
		$last = strtolower( $last );
		switch ( $last ) {
			case 'g':
				$val *= 1024;
			case 'm':
				$val *= 1024;
			case 'k':
				$val *= 1024;
		}

		return $val;
	}

	public static function human_filesize( $bytes, $decimals = 2 ) {
		$size   = array( 'B', 'kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB' );
		$factor = floor( ( strlen( $bytes ) - 1 ) / 3 );

		return sprintf( "%.{$decimals}f", $bytes / pow( 1024, $factor ) ) . $size[ $factor ];
	}

	public static function is_dir_empty( $dir ) {
		if ( ! is_readable( $dir ) ) {
			return null;
		}

		return ( 2 === count( scandir( $dir ) ) );
	}

	public static function delete_dir( $dir ) {
		$nodes = glob( $dir . '*' );

		if ( is_array( $nodes ) ) {
			foreach ( $nodes as $node ) {
				if ( is_dir( $node ) ) {
					self::delete_dir( $node . DIRECTORY_SEPARATOR );
				} else {
					unlink( $node );
				}
			}
		}
		rmdir( $dir );
	}

	public static function function_exists( $func ) {
		if ( ! function_exists( $func ) ) {
			return false;
		}

		if ( extension_loaded( 'suhosin' ) ) {
			$suhosin = ini_get( 'suhosin.executor.func.blacklist' );
			if ( ! empty( $suhosin ) ) {
				$suhosin = explode( ',', $suhosin );
				$suhosin = array_map( 'trim', $suhosin );
				$suhosin = array_map( 'strtolower', $suhosin );

				return ( function_exists( $func ) && ! array_search( $func, $suhosin ) );
			}
		}

		return true;
	}

	public static function getTimestamp( $timestamp ) {
		$gmtOffset = get_option( 'gmt_offset' );

		return ( $gmtOffset ? ( $gmtOffset * HOUR_IN_SECONDS ) + $timestamp : $timestamp );
	}

	public static function formatDate( $timestamp ) {
		return date_i18n( get_option( 'date_format' ), $timestamp );
	}

	public static function formatTime( $timestamp ) {
		return date_i18n( get_option( 'time_format' ), $timestamp );
	}

	public static function formatTimestamp( $timestamp ) {
		return date_i18n( get_option( 'date_format' ) . ' ' . get_option( 'time_format' ), $timestamp );
	}

	public static function formatEmail( $to, $body ) {
		return '<br>
<div>
            <br>
            <div style="background:#ffffff;padding:0 1.618em;font:13px/20px Helvetica,Arial,Sans-serif;padding-bottom:50px!important">
                <div style="width:600px;background:#fff;margin-left:auto;margin-right:auto;margin-top:10px;margin-bottom:25px;padding:0!important;border:10px Solid #fff;border-radius:10px;overflow:hidden">
                    <div style="display: block; width: 100% ; background-image: url(https://mainwp.com/wp-content/uploads/2013/02/debut_light.png) ; background-repeat: repeat; border-bottom: 2px Solid #7fb100 ; overflow: hidden;">
                      <div style="display: block; width: 95% ; margin-left: auto ; margin-right: auto ; padding: .5em 0 ;">
                         <div style="float: left;"><a href="https://mainwp.com"><img src="https://mainwp.com/wp-content/uploads/2013/07/MainWP-Logo-1000-300x62.png" alt="MainWP" height="30"/></a></div>
                         <div style="float: right; margin-top: .6em ;">
                            <span style="display: inline-block; margin-right: .8em;"><a href="https://mainwp.com/mainwp-extensions/" style="font-family: Helvetica, Sans; color: #7fb100; text-transform: uppercase; font-size: 14px;">Extensions</a></span>
                            <span style="display: inline-block; margin-right: .8em;"><a style="font-family: Helvetica, Sans; color: #7fb100; text-transform: uppercase; font-size: 14px;" href="https://mainwp.com/forum">Support</a></span>
                            <span style="display: inline-block; margin-right: .8em;"><a style="font-family: Helvetica, Sans; color: #7fb100; text-transform: uppercase; font-size: 14px;" href="https://docs.mainwp.com">Documentation</a></span>
                            <span style="display: inline-block; margin-right: .5em;" class="mainwp-memebers-area"><a href="https://mainwp.com/member/login/index" style="padding: .6em .5em ; border-radius: 50px ; -moz-border-radius: 50px ; -webkit-border-radius: 50px ; background: #1c1d1b; border: 1px Solid #000; color: #fff !important; font-size: .9em !important; font-weight: normal ; -webkit-box-shadow:  0px 0px 0px 5px rgba(0, 0, 0, .1); box-shadow:  0px 0px 0px 5px rgba(0, 0, 0, .1);">Members Area</a></span>
                         </div><div style="clear: both;"></div>
                      </div>
                    </div>
                    <div>
                        <p>Hello MainWP User!<br></p>
                        ' . $body . '
                        <div></div>
                        <br />
                        <div>MainWP</div>
                        <div><a href="https://www.MainWP.com" target="_blank">www.MainWP.com</a></div>
                        <p></p>
                    </div>

                    <div style="display: block; width: 100% ; background: #1c1d1b;">
                      <div style="display: block; width: 95% ; margin-left: auto ; margin-right: auto ; padding: .5em 0 ;">
                        <div style="padding: .5em 0 ; float: left;"><p style="color: #fff; font-family: Helvetica, Sans; font-size: 12px ;">© 2013 MainWP. All Rights Reserved.</p></div>
                        <div style="float: right;"><a href="https://mainwp.com"><img src="https://mainwp.com/wp-content/uploads/2013/07/MainWP-Icon-300.png" height="45"/></a></div><div style="clear: both;"></div>
                      </div>
                   </div>
                </div>
                <center>
                    <br><br><br><br><br><br>
                    <table border="0" cellpadding="0" cellspacing="0" width="100%" style="background-color:#ffffff;border-top:1px solid #e5e5e5">
                        <tbody><tr>
                            <td align="center" valign="top" style="padding-top:20px;padding-bottom:20px">
                                <table border="0" cellpadding="0" cellspacing="0">
                                    <tbody><tr>
                                        <td align="center" valign="top" style="color:#606060;font-family:Helvetica,Arial,sans-serif;font-size:11px;line-height:150%;padding-right:20px;padding-bottom:5px;padding-left:20px;text-align:center">
                                            This email is sent from your MainWP Dashboard.
                                            <br>
                                            If you do not wish to receive these notices please re-check your preferences in the MainWP Settings page.
                                            <br>
                                            <br>
                                        </td>
                                    </tr>
                                </tbody></table>
                            </td>
                        </tr>
                    </tbody></table>

                </center>
            </div>
</div>
<br>';
	}

	public static function update_option( $option_name, $option_value, $autoload = 'no' ) {
		$success = add_option( $option_name, $option_value, '', $autoload );

		if ( ! $success ) {
			$success = update_option( $option_name, $option_value );
		}

		return $success;
	}

	public static function fix_option( $option_name, $autoload = 'no' ) {
		global $wpdb;

		if ( $autoload != $wpdb->get_var( $wpdb->prepare( "SELECT autoload FROM $wpdb->options WHERE option_name = %s", $option_name ) ) ) {
			$option_value = get_option( $option_name );
			delete_option( $option_name );
			add_option( $option_name, $option_value, null, $autoload );
		}
	}

	public static function update_lasttime_backup( $by, $time ) {
		$backup_by = array( 'backupbuddy', 'backupwordpress', 'backwpup', 'updraftplus', 'wptimecapsule' );
		if ( ! in_array( $by, $backup_by ) ) {
			return false;
		}

		$lasttime = get_option( 'mainwp_lasttime_backup_' . $by );
		if ( $time > $lasttime ) {
			update_option( 'mainwp_lasttime_backup_' . $by, $time );
		}

		return true;
	}

	public static function get_lasttime_backup( $by ) {
		
		if ( 'backupwp' == $by ) {
			$by = 'backupwordpress';
		}
		
		$activated = true;		
		switch ( $by ) {
			case 'backupbuddy':
				if ( ! is_plugin_active( 'backupbuddy/backupbuddy.php' ) && ! is_plugin_active( 'Backupbuddy/backupbuddy.php' ) ) {
					$activated = false;
				}
				break;
			case 'backupwordpress':
				if ( ! is_plugin_active( 'backupwordpress/backupwordpress.php' ) ) {
					$activated = false;
				}
				break;
			case 'backwpup':
				if ( ! is_plugin_active( 'backwpup/backwpup.php' ) && ! is_plugin_active( 'backwpup-pro/backwpup.php' ) ) {
					$activated = false;
				}
				break;
			case 'updraftplus':
				if ( ! is_plugin_active( 'updraftplus/updraftplus.php' ) ) {
					$activated = false;
				}
				break;
			case 'wptimecapsule':
				if ( ! is_plugin_active( 'wp-time-capsule/wp-time-capsule.php' ) ) {
					$activated = false;
				}
				break;
			default:
				$activated = false;
				break;
		}
		
		if ( ! $activated )
			return 0;
		
		return get_option( 'mainwp_lasttime_backup_' . $by, 0 );
		
	}


	public static function containsAll( $haystack, $needle ) {
		if ( ! is_array( $haystack ) || ! is_array( $needle ) ) {
			return false;
		}

		foreach ( $needle as $item ) {
			if ( ! in_array( $item, $haystack ) ) {
				return false;
			}
		}

		return true;
	}

	public static function getRevisions( $max_revisions ) {
		global $wpdb;
		$sql = " SELECT	`post_parent`, COUNT(*) cnt FROM $wpdb->posts WHERE `post_type` = 'revision' GROUP BY `post_parent` HAVING COUNT(*) > " . $max_revisions;

		return $wpdb->get_results( $sql );
	}

	public static function deleteRevisions( $results, $max_revisions ) {
		global $wpdb;

		if ( ! is_array( $results ) || 0 === count( $results ) ) {
			return;
		}
		$count_deleted  = 0;
		$results_length = count( $results );
		for ( $i = 0; $i < $results_length; $i ++ ) {
			$number_to_delete = $results[ $i ]->cnt - $max_revisions;
			$count_deleted   += $number_to_delete;
			$sql_get          = "SELECT `ID`, `post_modified` FROM  $wpdb->posts WHERE `post_parent`=" . $results[ $i ]->post_parent . " AND `post_type`='revision' ORDER BY `post_modified` ASC";
			$results_posts    = $wpdb->get_results( $sql_get );

			$delete_ids = array();
			if ( is_array( $results_posts ) && count( $results_posts ) > 0 ) {
				for ( $j = 0; $j < $number_to_delete; $j ++ ) {
					$delete_ids[] = $results_posts[ $j ]->ID;
				}
			}

			if ( count( $delete_ids ) > 0 ) {
				// phpcs:ignore
				$sql_delete = " DELETE FROM $wpdb->posts WHERE `ID` IN (" . implode( ',', $delete_ids ) . ")";
				$wpdb->get_results( $sql_delete );
			}
		}

		return $count_deleted;
	}

	public static function inExcludes( $excludes, $value ) {
		if ( empty( $value ) ) {
			return false;
		}

		if ( null != $excludes ) {
			foreach ( $excludes as $exclude ) {
				if ( self::endsWith( $exclude, '*' ) ) {
					if ( self::startsWith( $value, substr( $exclude, 0, strlen( $exclude ) - 1 ) ) ) {
						return true;
					}
				} elseif ( $value == $exclude ) {
					return true;
				} elseif ( self::startsWith( $value, $exclude . '/' ) ) {
					return true;
				}
			}
		}

		return false;
	}

	public static function isArchive( $pFileName, $pPrefix = '', $pSuffix = '' ) {
		return preg_match( '/' . $pPrefix . '(.*).(zip|tar|tar.gz|tar.bz2)' . $pSuffix . '$/', $pFileName );
	}

	public static function parse_query( $var ) {

		$var = wp_parse_url( $var, PHP_URL_QUERY );
		$var = html_entity_decode( $var );
		$var = explode( '&', $var );
		$arr = array();

		foreach ( $var as $val ) {
			$x            = explode( '=', $val );
			$arr[ $x[0] ] = $x[1];
		}
		unset( $val, $x, $var );

		return $arr;
	}

	/**
	 * Allow to remove method for an hook when, it's a class method used and class don't have variable, but you know the class name :)
	 * Credit to the : wp-filters-extras
	 */

	public static function remove_filters_for_anonymous_class( $hook_name = '', $class_name = '', $method_name = '', $priority = 0 ) {
		global $wp_filter;

		// Take only filters on right hook name and priority.
		if ( ! isset( $wp_filter[ $hook_name ] ) || ! isset( $wp_filter[ $hook_name ][ $priority ] ) || ! is_array( $wp_filter[ $hook_name ][ $priority ] ) ) {
			return false;
		}

		// Loop on filters registered.
		foreach ( (array) $wp_filter[ $hook_name ][ $priority ] as $unique_id => $filter_array ) {
			// Test if filter is an array ! (always for class/method).
			if ( isset( $filter_array['function'] ) && is_array( $filter_array['function'] ) ) {
				// Test if object is a class, class and method is equal to param !
				if ( is_object( $filter_array['function'][0] ) && get_class( $filter_array['function'][0] ) && get_class( $filter_array['function'][0] ) === $class_name && $filter_array['function'][1] === $method_name ) {
					unset( $wp_filter[ $hook_name ][ $priority ][ $unique_id ] );
				}
			}
		}

		return false;
	}

	/**
	 * Credit to the : wp-filters-extras
	 */

	public static function remove_filters_with_method_name( $hook_name = '', $method_name = '', $priority = 0 ) {

		global $wp_filter;
		// Take only filters on right hook name and priority.
		if ( ! isset( $wp_filter[ $hook_name ][ $priority ] ) || ! is_array( $wp_filter[ $hook_name ][ $priority ] ) ) {
			return false;
		}
		// Loop on filters registered.
		foreach ( (array) $wp_filter[ $hook_name ][ $priority ] as $unique_id => $filter_array ) {
			// Test if filter is an array ! (always for class/method).
			if ( isset( $filter_array['function'] ) && is_array( $filter_array['function'] ) ) {
				// Test if object is a class and method is equal to param !
				if ( is_object( $filter_array['function'][0] ) && get_class( $filter_array['function'][0] ) && $filter_array['function'][1] == $method_name ) {
					// Test for WordPress >= 4.7 WP_Hook class.
					if ( is_a( $wp_filter[ $hook_name ], 'WP_Hook' ) ) {
						unset( $wp_filter[ $hook_name ]->callbacks[ $priority ][ $unique_id ] );
					} else {
						unset( $wp_filter[ $hook_name ][ $priority ][ $unique_id ] );
					}
				}
			}
		}
		return false;
	}

	public static function sanitize_filename( $filename ) {
		if ( ! function_exists( 'mb_ereg_replace' ) ) {
			return sanitize_file_name( $filename );
		}

		// Remove anything which isn't a word, whitespace, number or any of the following caracters -_~,;:[]().
		// If you don't need to handle multi-byte characters you can use preg_replace rather than mb_ereg_replace.
		// Thanks @Łukasz Rysiak!
		$filename = mb_ereg_replace( '([^\w\s\d\-_~,;:\[\]\(\).])', '', $filename );
		// Remove any runs of periods (thanks falstro!).
		$filename = mb_ereg_replace( '([\.]{2,})', '', $filename );

		return $filename;
	}

	public static function ctype_digit( $str ) {
		return ( is_string( $str ) || is_int( $str ) || is_float( $str ) ) && preg_match( '/^\d+\z/', $str );
	}

	public static function create_nonce_without_session( $action = - 1 ) {
		$user = wp_get_current_user();
		$uid  = (int) $user->ID;
		if ( ! $uid ) {
			$uid = apply_filters( 'nonce_user_logged_out', $uid, $action );
		}

		$i = wp_nonce_tick();

		return substr( wp_hash( $i . '|' . $action . '|' . $uid, 'nonce' ), - 12, 10 );
	}

	public static function verify_nonce_without_session( $nonce, $action = - 1 ) {
		$nonce = (string) $nonce;
		$user  = wp_get_current_user();
		$uid   = (int) $user->ID;
		if ( ! $uid ) {
			$uid = apply_filters( 'nonce_user_logged_out', $uid, $action );
		}

		if ( empty( $nonce ) ) {
			return false;
		}

		$i = wp_nonce_tick();

		$expected = substr( wp_hash( $i . '|' . $action . '|' . $uid, 'nonce' ), - 12, 10 );
		if ( hash_equals( $expected, $nonce ) ) {
			return 1;
		}

		$expected = substr( wp_hash( ( $i - 1 ) . '|' . $action . '|' . $uid, 'nonce' ), - 12, 10 );
		if ( hash_equals( $expected, $nonce ) ) {
			return 2;
		}

		return false;
	}

	public static function isAdmin() {
		global $current_user;
		if ( 0 == $current_user->ID ) {
			return false;
		}

		if ( 10 == $current_user->wp_user_level || ( isset( $current_user->user_level ) && 10 == $current_user->user_level ) || current_user_can( 'level_10' ) ) {
			return true;
		}

		return false;
	}

	public static function isSSLEnabled() {
		if ( defined( 'MAINWP_NOSSL' ) ) {
			return ! MAINWP_NOSSL;
		}
		return function_exists( 'openssl_verify' );
	}

	public static function is_screen_with_update() {

		if ( ( defined( 'DOING_AJAX' ) && DOING_AJAX ) || ( defined( 'DOING_CRON' ) && DOING_CRON ) ) {
			return false;
		}

		if ( function_exists( 'get_current_screen' ) ) {
			$screen = get_current_screen();
			if ( $screen ) {
				if ( 'update-core' == $screen->base && 'index.php' == $screen->parent_file ) {
					return true;
				}
			}
		}
		return false;
	}

	public static function is_wp_engine() {
		return function_exists( 'is_wpe' ) && is_wpe();
	}

	public static function check_files_exists( $files = array(), $return = false ) {
			$missing = array();
		if ( is_array( $files ) ) {
			foreach ( $files as $name ) {
				if ( ! file_exists( $name ) ) {
					$missing[] = $name;
				}
			}
		} else {
			if ( ! file_exists( $files ) ) {
					$missing[] = $files;
			}
		}

		if ( ! empty( $missing ) ) {
			$message = 'Missing file(s): ' . implode( ',', $missing );
			if ( $return ) {
				return $message;
			} else {
				throw new Exception( $message );
			}
		}
		return true;
	}

	public static function check_classes_exists( $classes = array(), $return = false ) {
		$missing = array();
		if ( is_array( $classes ) ) {
			foreach ( $classes as $name ) {
				if ( ! class_exists( $name ) ) {
					$missing[] = $name;
				}
			}
		} else {
			if ( ! class_exists( $classes ) ) {
				$missing[] = $classes;
			}
		}

		if ( ! empty( $missing ) ) {
			$message = 'Missing classes: ' . implode( ',', $missing );
			if ( $return ) {
				return $message;
			} else {
				throw new Exception( $message );
			}
		}
		return true;
	}

	public static function check_methods( $object, $methods = array(), $return = false ) {
		$missing = array();
		if ( is_array( $methods ) ) {
				$missing = array();
			foreach ( $methods as $name ) {
				if ( ! method_exists( $object, $name ) ) {
					$missing[] = $name;
				}
			}
		} elseif ( ! empty( $methods ) ) {
			if ( ! method_exists( $object, $methods ) ) {
				$missing[] = $methods;
			}
		}

		if ( ! empty( $missing ) ) {
			$message = 'Missing method: ' . implode( ',', $missing );
			if ( $return ) {
				return $message;
			} else {
				throw new Exception( $message );
			}
		}

		return true;
	}

	public static function check_properties( $object, $properties = array(), $return = false ) {
		$missing = array();
		if ( is_array( $properties ) ) {
			foreach ( $properties as $name ) {
				if ( ! property_exists( $object, $name ) ) {
					$missing[] = $name;
				}
			}
		} elseif ( ! empty( $properties ) ) {
			if ( ! property_exists( $object, $properties ) ) {
				$missing[] = $properties;
			}
		}

		if ( ! empty( $missing ) ) {
			$message = 'Missing properties: ' . implode( ',', $missing );
			if ( $return ) {
				return $message;
			} else {
				throw new Exception( $message );
			}
		}

		return true;
	}

	public static function check_functions( $funcs = array(), $return = false ) {
		$missing = array();
		if ( is_array( $funcs ) ) {
			foreach ( $funcs as $name ) {
				if ( ! function_exists( $name ) ) {
					$missing[] = $name;
				}
			}
		} elseif ( ! empty( $funcs ) ) {
			if ( ! function_exists( $funcs ) ) {
				$missing[] = $funcs;
			}
		}

		if ( ! empty( $missing ) ) {
			$message = 'Missing functions: ' . implode( ',', $missing );
			if ( $return ) {
				return $message;
			} else {
				throw new Exception( $message );
			}
		}

		return true;
	}


	/**
	 * Handle fatal error for requests from the dashboard
	 * mwp_action requests
	 * wordpress_seo requests
	 * This will do not handle fatal error for sync request from the dashboard
	 */
	public static function handle_fatal_error() {

		function handle_shutdown() {
			// handle fatal errors and compile errors.
			$error = error_get_last();
			if ( isset( $error['type'] ) && isset( $error['message'] ) && ( E_ERROR === $error['type'] || E_COMPILE_ERROR === $error['type'] ) ) {
				self::write( array( 'error' => 'MainWP_Child fatal error : ' . $error['message'] . ' Line: ' . $error['line'] . ' File: ' . $error['file'] ) );
			}
		}

		if ( isset( $_POST['function'] ) && isset( $_POST['mainwpsignature'] ) && ( isset( $_POST['mwp_action'] ) || 'wordpress_seo' == $_POST['function'] ) ) {
			register_shutdown_function( 'handle_shutdown' );
		}
	}

	/**
	 * Method execute_snippet()
	 * 
	 * Execute snippet code
	 * 
	 * @param string $code The code	 * 
	 * 
	 * @return array result 
	 */
	public static function execute_snippet( $code ) {
		ob_start();
		$result = eval( $code ); // phpcs:ignore Squiz.PHP.Eval -- eval() used safely.
		$output = ob_get_contents();
		ob_end_clean();
		$return = array();
		$error  = error_get_last();
		if ( ( false === $result ) && $error ) {
			$return['status'] = 'FAIL';
			$return['result'] = $error['message'];
		} else {
			$return['status'] = 'SUCCESS';
			$return['result'] = $output;
		}
		return $return;
	}
	
}