/* globals plupload, pluploadL10n, error */
window.wp = window.wp || {};

( function( wp ) {
	var VideoPress = {
		originalOptions: {},

		/**
		 * This is the standard uploader response handler.
		 */
		handleStandardResponse: function( response, file ) {
			if ( ! _.isObject( response ) || _.isUndefined( response.success ) ) {
				return error(pluploadL10n.default_error, null, file);

			} else if ( ! response.success ) {
				return error(response.data && response.data.message, response.data, file);
			}

			return response;
		},

		/**
		 * Handle response from the WPCOM Rest API.
		 */
		handleRestApiResponse: function( response, file ) {
			if ( response.media.length !== 1) {
				return error( pluploadL10n.default_error, null, file );
			}

			var media = response.media[0],
				mimeParts = media.mime_type.split('/'),
				data = {
					alt : '',
					author : media.author_ID || 0,
					authorName: '',
					caption: '',
					compat: { item: '', meta: '' },
					date: media.date || '',
					dateFormatted: media.date || '',
					description: media.description || '',
					editLink: '',
					filename: media.file || '',
					filesizeHumanReadable: '',
					filesizeInBytes: '',
					height: media.height,
					icon: media.icon || '',
					id: media.ID || '',
					link: media.URL || '',
					menuOrder: 0,
					meta: false,
					mime: media.mime_type || '',
					modified: 0,
					name: '',
					nonces: { update: '', 'delete': '', edit: '' },
					orientation: '',
					sizes: undefined,
					status: '',
					subtype: mimeParts[1] || '',
					title: media.title || '',
					type: mimeParts[0] || '',
					uploadedTo: 1,
					uploadedToLink: '',
					uploadedToTitle: '',
					url: media.URL || '',
					width: media.width,
					success: '',
					videopress: {
						guid: media.videopress_guid || null,
						processing_done: media.videopress_processing_done || false
					}
				};

			response.data = data;

			return response;
		},

		/**
		 * Make sure that all of the original variables have been reset, so the uploader
		 * doesn't try to go to VideoPress again next time.
		 *
		 * @param up
		 */
		resetToOriginalOptions: function( up ) {
			if ( typeof VideoPress.originalOptions.url !== 'undefined' ) {
				up.setOption( 'url', VideoPress.originalOptions.url );
				delete VideoPress.originalOptions.url;
			}

			if ( typeof VideoPress.originalOptions.multipart_params !== 'undefined' ) {
				up.setOption( 'multipart_params', VideoPress.originalOptions.multipart_params );
				delete VideoPress.originalOptions.multipart_params;
			}

			if ( typeof VideoPress.originalOptions.file_data_name !== 'undefined' ) {
				up.setOption( 'file_data_name', VideoPress.originalOptions.file_data_name );
				delete VideoPress.originalOptions.file_data_name;
			}
		}
	};

	if (typeof wp.Uploader !== 'undefined') {
		var media = wp.media;

		/**
		 * A plupload code specifically for videopress failures.
		 *
		 * @type {string}
		 */
		plupload.VIDEOPRESS_TOKEN_FAILURE = 'VP_TOKEN_FAILURE';

		/**
		 * Adds a filter that checks all files to see if they are videopress files and if they are
		 * it will download extra metadata for them.
		 */
		plupload.addFileFilter( 'videopress_check_uploads', function( maxSize, file, cb ) {
			var mimeParts = file.type.split('/');
			var self = this;

			if ( mimeParts[0] === 'video' ) {
				media.ajax( 'videopress-get-upload-token', { async: false, data: { filename: file.name } } ).done( function ( response ) {
					file.videopress = response;
					cb( true );

				}).fail( function ( response ) {
					self.trigger( 'Error', {
						code : plupload.VIDEOPRESS_TOKEN_FAILURE,
						message : plupload.translate( 'Could not get the VideoPress token needed for uploading' ),
						file : file,
						response : response
					} );
					cb( false );
				});

			} else {
				// Handles the normal max_file_size functionality.
				var undef;

				// Invalid file size
				if (file.size !== undef && maxSize && file.size > maxSize) {
					this.trigger('Error', {
						code: plupload.FILE_SIZE_ERROR,
						message: plupload.translate( 'File size error.' ),
						file: file
					});
					cb(false);
				} else {
					cb(true);
				}
			}
		});
	}

	wp.VideoPress = VideoPress;

} )( window.wp );