/**
 * Standalone shim.
 *
 * The only thing this adds over the original plugin: a clearer message when
 * the browser refuses the File System Access API. Opening this page straight
 * off disk (file://) gives it an opaque origin in Chrome, and the folder
 * picker used for *writing* metadata rejects opaque origins with a
 * SecurityError. Reading, playback, CSV and PDF are unaffected — only the
 * "Edit Metadata in a Folder…" path needs the page served over http(s),
 * which locally means something like `python3 -m http.server` in this file's
 * folder and then visiting http://localhost:8000/.
 *
 * The app's own catch block runs before this one resolves its message, so
 * the warning is written on the next tick to make sure it lands last.
 */
( function () {
	"use strict";

	if ( typeof window.showDirectoryPicker !== "function" ) {
		return;
	}

	var original = window.showDirectoryPicker.bind( window );

	window.showDirectoryPicker = function ( options ) {
		return original( options ).catch( function ( err ) {
			if ( err && ( err.name === "SecurityError" || err.name === "NotAllowedError" ) &&
				window.location.protocol === "file:" ) {
				window.setTimeout( function () {
					var warning = document.querySelector( "[data-bwfa-fs-warning]" );
					if ( warning ) {
						warning.style.display = "block";
					}
					var status = document.querySelector( "[data-bwfa-status]" );
					if ( status ) {
						status.textContent = "";
					}
				}, 0 );
			}
			throw err;
		} );
	};
}() );