<?php if ( ! defined( 'ABSPATH' ) ) {
	die;
} // Cannot access pages directly.
/**
 * Chunks
 * - https://docs.fineuploader.com/features/chunking.html
 */
/**
 *
 * Options Class
 *
 * @since 1.0.0
 * @version 1.0.0
 *
 */
if ( ! class_exists( 'Exopite_Simple_Options_Framework_Upload' ) ) {

	class Exopite_Simple_Options_Framework_Upload {

		public static function add_hooks() {

			add_action( 'wp_ajax_exopite-sof-file_uploader', array(
				'Exopite_Simple_Options_Framework_Upload',
				'file_uploader_callback'
			) );
			add_action( 'wp_ajax_exopite-sof-file-batch-delete', array(
				'Exopite_Simple_Options_Framework_Upload',
				'file_batch_delete_callback'
			) );

		}

		//DEGUB
		public static function write_log( $type, $log_line ) {

			$hash        = '';
			$fn          = plugin_dir_path( __FILE__ ) . '/' . $type . '-' . $hash . '.log';
			$log_in_file = file_put_contents( $fn, date( 'Y-m-d H:i:s' ) . ' - ' . $log_line . PHP_EOL, FILE_APPEND );

		}

		/**
		 * Handle Response
		 *
		 * Code based on:
		 * @link https://wordpress.org/plugins/wp-multi-file-uploader/
		 * @link https://wordpress.org/plugins/wp-dropzone/
		 */
		public static function file_uploader_callback() {

			// file_put_contents( dirname(__FILE__) . '\test.log', var_export( $_POST, true ) . PHP_EOL . PHP_EOL, FILE_APPEND );

			if ( strtoupper( sanitize_key( $_POST['_method'] ) ) == 'DELETE' && isset( $_POST['qquuid'] ) ) {

				/**
				 * Delete file on AJAX request with qquuid
				 *
				 * @link https://docs.fineuploader.com/features/delete.html
				 * @link https://docs.fineuploader.com/branch/master/api/options.html#deleteFile
				 */
				$result = self::file_delete();

//				$protocol = ( isset( $_SERVER['SERVER_PROTOCOL'] ) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.0' );
				$protocol = wp_get_server_protocol();

				header( $protocol . $result );

			} else {

				$result = self::file_uploader();

				header( "Content-Type: text/plain" );
				echo json_encode( $result );

			}

			die();

		}

		public static function file_batch_delete_callback() {

			$deleted = array();

			if ( isset( $_POST['media-ids'] ) && is_array( $_POST['media-ids'] ) ) {

				// Sanitize attachment ids, these should be absint
				$attachment_id_array = array_map( 'absint', $_POST['media-ids'] );


				foreach ( $attachment_id_array as $attachmentid ) {

					$deleted_item = wp_delete_attachment( $attachmentid, true );
					$deleted[]    = $deleted_item->ID;

				}

			}

			die( json_encode( $deleted ) );

		}

		public static function file_delete() {

			/**
			 * Query attachments
			 *
			 * @link https://gist.github.com/BronsonQuick/1971067
			 */
			$args = array(
				'post_type'   => 'attachment',
				'numberposts' => 1,
				'post_status' => null,
				'meta_query'  => array(
					array(
						'key'     => 'qquuid',
						'value'   => sanitize_text_field( $_POST['qquuid'] ),
						'compare' => '=',
					)
				)

			);

			$attachments = get_posts( $args );

			if ( $attachments ) {

				foreach ( $attachments as $attachment ) {

					if ( wp_delete_post( $attachment->ID, true ) ) {

						return ' 200 OK';

					}
				}

			}

			// Restore original post data.
			wp_reset_postdata();
			wp_reset_query();

			return ' 404 Not Found';

		}

		public static function file_uploader() {

			// Make sure all files are allowed
			if ( ! self::check_file_type( $_FILES['qqfile']['name'] ) ) {

				return array( 'error' => 'Unsupported file type' );

			}

			// Including file library if not exist
			if ( ! function_exists( 'wp_handle_upload' ) ) {

				require_once ABSPATH . 'wp-admin/includes/file.php';

			}

			if ( isset( $_POST['qqfilename'] ) ) {
				$_FILES['qqfile']['name'] = sanitize_file_name( $_POST['qqfilename'] );
			}

			// Uploading file to server
			$uploaded_file = $_FILES['qqfile'];

			$upload_overrides = array( 'test_form' => false );
			$movefile         = wp_handle_upload( $uploaded_file, $upload_overrides );

			if ( $movefile ) {

				$wp_upload_dir = wp_upload_dir();
				$filename      = str_replace( $wp_upload_dir['url'] . '/', '', $movefile['url'] );

				$attachment = self::add_attachment( $movefile['url'], $movefile['file'] );

				// Add qquuid for possibility to delete with AJAX fine uploader
				update_post_meta( $attachment, 'qquuid', sanitize_text_field( $_POST['qquuid'] ) );

				// Generate ALT attribute based on file name
				$alt = substr( $_FILES['qqfile']['name'], 0, strrpos( $_FILES['qqfile']['name'], "." ) );
				$alt = sanitize_title( $alt );
				$alt = str_replace( '-', ' ', $alt );
				$alt = ucwords( strtolower( $alt ) );
				update_post_meta( $attachment, '_wp_attachment_image_alt', $alt );

				return array(
					'success'      => $movefile,
					'attachmentId' => $attachment
				);

			} else {

				return array( 'error' => 'Can not move file' );

			}

			return array( 'error' => 'General error' );

		}

		/**
		 * Handle Attachment
		 */
		public static function add_attachment( $url, $filepath ) {

			$updated_url = trim( substr( $url, strpos( $url, 'uploads/') + 8 ));

			$wp_upload_dir = wp_upload_dir();
			$filename      = str_replace( $wp_upload_dir['url'] . '/', '', $url );

			$wp_filetype = wp_check_filetype( basename( $filename ), null );

			$attachment = array(
				'guid'           => $url,
				'post_mime_type' => $wp_filetype['type'],
				'post_title'     => preg_replace( '/\.[^.]+$/', '', basename( $filename ) ),
				'post_content'   => '',
				'post_status'    => 'inherit'
			);

			// Attach file to post if attach is true and it is uploaded in a post (metabox)
			$post_id   = ( isset( $_POST['postId'] ) ) ? intval( $_POST['postId'] ) : 0;
			$attach_id = wp_insert_attachment( $attachment, $updated_url, $post_id );

			// Determines if attachment is an image.
			if ( wp_attachment_is_image( $attach_id ) ) {

				if ( ! function_exists( 'wp_generate_attachment_metadata' ) || ! function_exists( 'wp_update_attachment_metadata' ) ) {

					require_once( ABSPATH . 'wp-admin/includes/image.php' );

				}

				$attach_data = wp_generate_attachment_metadata( $attach_id, $filepath );

				wp_update_attachment_metadata( $attach_id, $attach_data );

			}

			return $attach_id;
		}

		/**
		 * Create Image Sizes
		 */
		function create_image_sizes( $filepath ) {
			$sizes = array();

			foreach ( get_intermediate_image_sizes() as $size ) {

				$sizes[ $size ]           = array( 'width' => '', 'height' => '', 'crop' => true );
				$sizes[ $size ]['width']  = get_option( "{$size}_size_w" ); // For default sizes set in options
				$sizes[ $size ]['height'] = get_option( "{$size}_size_h" ); // For default sizes set in options
				$sizes[ $size ]['crop']   = get_option( "{$size}_crop" ); // For default sizes set in options

			}

			$sizes = apply_filters( 'intermediate_image_sizes_advanced', $sizes );

			$metadata = array();

			foreach ( $sizes as $size => $size_data ) {

				$resized = image_make_intermediate_size(
					$filepath,
					$size_data['width'],
					$size_data['height'],
					$size_data['crop']
				);

				if ( $resized ) {

					$metadata[ $size ] = $resized;

				}

			}

			return $metadata;
		}

		/**
		 * Get WordPress Default Allowed Mime Types
		 *
		 * @since 1.1.0
		 */
		public static function allowed_mime_types() {
			// Work through the WordPress supported mime types
			$wp_allowed_mime_types = get_allowed_mime_types();

			$allowed_mime_types = array();

			foreach ( $wp_allowed_mime_types as $key => $value ) {

				$mime_types = explode( '|', $key );

				// Build mime types array out of WordPress allowed mime types
				foreach ( $mime_types as $mime_type ) {

					$allowed_mime_types[] = $mime_type;

				}

			}


			return $allowed_mime_types;
		}

		/**
		 * Check File Type
		 */
		public static function check_file_type( $file_name ) {

			// Get file info
			$filetype = wp_check_filetype( $file_name );

			// Get from options
			$allowed_exts = self::allowed_mime_types();

			// Make sure the file type is allowed
			$ext = ( isset( $filetype['ext'] ) ) ? strtolower( $filetype['ext'] ) : '';

			if ( in_array( $ext, $allowed_exts ) ) {

				return true;

			}

			return false;
		}

		/*
		 * Returns a file size limit in bytes based on the PHP upload_max_filesize and post_max_size
		 *
		 * @link https://stackoverflow.com/questions/13076480/php-get-actual-maximum-upload-size/25370978#25370978
		 */
		public static function file_upload_max_size() {
			static $max_size = - 1;

			if ( $max_size < 0 ) {

				// Start with post_max_size.
				$post_max_size = self::parse_size( ini_get( 'post_max_size' ) );

				if ( $post_max_size > 0 ) {

					$max_size = $post_max_size;

				}

				// If upload_max_size is less, then reduce. Except if upload_max_size is
				// zero, which indicates no limit.
				$upload_max = self::parse_size( ini_get( 'upload_max_filesize' ) );
				if ( $upload_max > 0 && $upload_max < $max_size ) {

					$max_size = $upload_max;

				}

			}

			return $max_size;
		}

		public static function parse_size( $size ) {

			$unit = preg_replace( '/[^bkmgtpezy]/i', '', $size ); // Remove the non-unit characters from the size.
			$size = preg_replace( '/[^0-9\.]/', '', $size ); // Remove the non-numeric characters from the size.

			if ( $unit ) {

				// Find the position of the unit in the ordered string which is the power of magnitude to multiply a kilobyte by.
				return round( $size * pow( 1024, stripos( 'bkmgtpezy', $unit[0] ) ) );

			} else {

				return round( $size );

			}

		}

	}

}