SimulationServer.prototype._streamSimHostHtml = function()

in src/server/server.js [301:350]
33 lines of code
4 McCabe index (conditional complexity)

SimulationServer.prototype._streamSimHostHtml = function (request, response) {
    // If we haven't ever prepared, do so before we try to generate sim-host, so we know our list of plugins is up-to-date.
    // Then create sim-host.js (if it is out-of-date) so it is ready when it is requested.
    var project = this._project;
    var config = this._simulatorProxy.config;

    project.prepare()
        .then(function () {
            var simulationFilePath = config.simulationFilePath;

            return this._simulationFiles.createSimHostJsFile(project, simulationFilePath);
        }.bind(this))
        .then(function () {
            // Inject references to simulation HTML files
            var panelsHtmlBasename = pluginSimulationFiles['sim-host']['panels'];
            var dialogsHtmlBasename = pluginSimulationFiles['sim-host']['dialogs'];
            var panelsHtml = [];
            var dialogsHtml = [];

            var pluginList = project.getPlugins();

            Object.keys(pluginList).forEach(function (pluginId) {
                var pluginPath = pluginList[pluginId];
                if (pluginPath) {
                    var lang = config.lang;

                    var panelsHtmlFile = path.join(pluginPath, panelsHtmlBasename);
                    if (fs.existsSync(panelsHtmlFile)) {
                        panelsHtml.push(processPluginHtml(panelsHtmlFile, pluginId, lang));
                    }

                    var dialogsHtmlFile = path.join(pluginPath, dialogsHtmlBasename);
                    if (fs.existsSync(dialogsHtmlFile)) {
                        dialogsHtml.push(processPluginHtml(dialogsHtmlFile, pluginId, lang));
                    }
                }
            });

            // Note that this relies on a custom version of send that supports a 'transform' option.
            var that = this;
            send(request, path.join(this._hostRoot['sim-host'], 'sim-host.html'), {
                transform: function (stream) {
                    return stream
                        .pipe(replaceStream('<!-- TITLE -->', that._simulatorProxy.config.simHostOptions.title))
                        .pipe(replaceStream('<!-- PANELS -->', panelsHtml.join('\n')))
                        .pipe(replaceStream('<!-- DIALOGS -->', dialogsHtml.join('\n')));
                }
            }).pipe(response);
        }.bind(this));
};