initial commit

src/core/server/index.ts

@@ -0,0 +1,51 @@
+import config, { Config } from './config';
+import express, { Express } from 'express';
+import http from 'http';
+import { createApp } from './app';
+import logger from './logger';
+
+export interface ServerOptions {}
+
+/**
+ * Server provides an interface to create, start, and manage a Talk Server.
+ */
+class Server {
+    // app is the root application that the server will bind to.
+    private app: Express;
+
+    // config exposes application specific configuration.
+    public config: Config;
+
+    // httpServer is the running instance of the HTTP server that will bind to the
+    // requested port.
+    public httpServer: http.Server;
+
+    constructor(options: ServerOptions) {
+        this.app = express();
+        this.config = config.validate({ allowed: 'strict' });
+    }
+
+    /**
+     * start orchestrates the application by starting it and returning a promise
+     * when the server has started.
+     *
+     * @param parent the optional express application to bind the server to.
+     */
+    start = (parent?: Express): Promise<Server> =>
+        new Promise(async resolve => {
+            const port = this.config.get('port');
+
+            // Ensure we have an app to bind to.
+            parent = parent ? parent : this.app;
+
+            // Create the Talk App, branching off from the parent app.
+            const app: Express = await createApp(parent, this.config);
+
+            logger.info({ port }, 'now listening');
+
+            // Listen on the designated port.
+            this.httpServer = app.listen(port, () => resolve(this));
+        });
+}
+
+export default Server;