(function () {
	var cfg = window.__wpcloudBlackbox || {};
	if ( ! cfg.apiKey ) {
		return;
	}

	var form  = document.getElementById( 'loginform' ) || document.getElementById( 'lostpasswordform' );
	var field = document.getElementById( cfg.field );
	if ( ! form || ! field ) {
		return;
	}

	var challengeInProgress = false;

	var attempts = 0;
	( function whenReady() {
		if ( ! window.Blackbox || typeof window.Blackbox.configure !== 'function' ) {
			if ( attempts++ < 50 ) {
				window.setTimeout( whenReady, 100 );
			} else if ( window.console && window.console.warn ) {
				window.console.warn( '[wpcloud-blackbox] client did not load; gate inactive.' );
			}
			return;
		}

		try {
			window.Blackbox.configure( {
				apiKey: cfg.apiKey,
				challengeContainer: document.getElementById( 'wpcloud-blackbox-challenge' ),
				onSuccess: function ( result ) {
					if ( result && result.sessionId ) {
						field.value = result.sessionId;
					}
				},
				onChallengeStart: function () {
					challengeInProgress = true;
				},
				onChallengeComplete: function () {
					challengeInProgress = false;
				},
				onChallengeFailure: function () {
					challengeInProgress = false;
				}
			} );
			window.Blackbox.init();
		} catch ( err ) {
		}
	} )();

	var submitting = false;
	form.addEventListener( 'submit', function ( e ) {
		if ( submitting ) {
			return;
		}
		if ( ! window.Blackbox || typeof window.Blackbox.getSessionId !== 'function' ) {
			return;
		}
		if ( challengeInProgress ) {
			e.preventDefault();
			return;
		}
		if ( field.value ) {
			return;
		}

		e.preventDefault();
		submitting = true;

		var submitted = false;
		var submit = function () {
			if ( submitted ) { return; }
			submitted = true;
			if ( typeof form.requestSubmit === 'function' ) {
				form.requestSubmit();
			} else {
				form.submit();
			}
		};

		var safety = window.setTimeout( submit, 3000 );
		window.Blackbox.getSessionId()
			.then( function ( sid ) { if ( sid ) { field.value = sid; } } )
			.catch( function () {} )
			.then( function () { window.clearTimeout( safety ); submit(); } );
	} );
})();