feat: create initial app.ts for loading server config & Express

src2/app.ts

@@ -0,0 +1,76 @@
+import express, { json as BodyParserJson } from 'express';
+import fs from 'fs-extra';
+import { path, isProd } from '@tycrek/joint';
+import { log } from './log';
+
+/**
+ * Core Express server config.
+ * This is separate from the user configuration starting in 0.15.0
+ */
+interface ServerConfiguration {
+    host: string,
+    port: number,
+    proxied: boolean
+}
+
+/**
+ * Main function.
+ * Yes I'm using main() in TS, cry about it
+ */
+async function main() {
+
+    // Set default server configuration
+    const serverConfig: ServerConfiguration = {
+        host: '0.0.0.0',
+        port: 40115,
+        proxied: isProd()
+    };
+
+    // Replace with user details, if necessary
+    try {
+        const exists = await fs.pathExists(path.join('server.json'));
+        if (exists) {
+
+            // Read file
+            const { host, port, proxied } = await fs.readJson(path.join('server.json')) as { host?: string, port?: number, proxied?: boolean };
+
+            // Set details, if available
+            if (host) serverConfig.host = host;
+            if (port) serverConfig.port = port;
+            if (proxied != undefined) serverConfig.proxied = proxied;
+
+            log.debug('server.json', `${host ? `host=${host},` : ''}${port ? `port=${port},` : ''}${proxied != undefined ? `proxied=${proxied},` : ''}`);
+        }
+    } catch (err) {
+        log.error('Failed to read server.json');
+        console.error(err);
+        throw err;
+    }
+
+    // Set up Express
+    const app = express();
+
+    app.enable('case sensitive routing');
+    app.disable('x-powered-by');
+
+    app.set('trust proxy', serverConfig.proxied);
+    app.set('view engine', 'pug');
+
+    // Middleware
+    app.use(log.express());
+    app.use(BodyParserJson());
+
+    // todo: routing
+
+    // Host app
+    app.listen(serverConfig.port, serverConfig.host, () => log.success('Server listening', 'Ready for uploads'));
+}
+
+// Launch log
+const pkg = fs.readJsonSync(path.join('package.json')) as { name: string, version: string };
+log.blank()
+    .info(pkg.name, pkg.version)
+    .blank();
+
+// Start program
+main().catch(() => process.exit(1));