/**
 * Foreign notification API handler
 *
 * @class
 * @extends mw.echo.api.LocalAPIHandler
 *
 * @constructor
 * @param {string} apiUrl A url for the access point of the
 *  foreign API.
 * @param {Object} [config={}]
 * @param {boolean} [config.unreadOnly] Whether this handler should request unread
 *  notifications by default.
 */
mw.echo.api.ForeignAPIHandler = function MwEchoApiForeignAPIHandler( apiUrl, config ) {
	config = config || {};

	// Parent constructor
	mw.echo.api.ForeignAPIHandler.super.call( this, config );

	this.api = new mw.ForeignApi( apiUrl );
	this.unreadOnly = config.unreadOnly !== undefined ? !!config.unreadOnly : false;
};

/* Setup */

OO.inheritClass( mw.echo.api.ForeignAPIHandler, mw.echo.api.LocalAPIHandler );

/**
 * @inheritdoc
 */
mw.echo.api.ForeignAPIHandler.prototype.getTypeParams = function ( type ) {
	let params = {
		// Backwards compatibility
		notforn: 1
	};

	if ( this.unreadOnly ) {
		params = Object.assign( {}, params, { notfilter: '!read' } );
	}

	return Object.assign( {}, this.typeParams[ type ], params );
};
