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import express, { Application, Router, Request, Response, NextFunction } from "express";
import { MongoDatabase, Database } from "lambert-db";
import { Server as HTTPServer } from "http";
import { traverseDirectory } from "./Util";
import bodyParser from "body-parser";
import "express-async-errors";
const log = console.log;
console.log = (content) => {
log(`[${new Date().toTimeString().split(" ")[0]}]`, content);
};
export type ServerOptions = {
db: string;
port: number;
host: string;
};
declare global {
namespace Express {
interface Request {
server: Server;
}
}
}
export class Server {
app: Application;
http: HTTPServer;
db: Database;
routes: Router[];
options: ServerOptions;
constructor(options: Partial<ServerOptions> = { port: 3000, host: "0.0.0.0" }) {
this.app = express();
this.db = new MongoDatabase(options?.db);
this.options = options as ServerOptions;
}
async init() {
await this.db.init();
console.log("[Database] connected...");
await new Promise((res, rej) => {
this.http = this.app.listen(this.options.port, this.options.host, () => res(null));
});
this.routes = await this.registerRoutes(__dirname + "/routes/");
}
async registerRoutes(root: string) {
this.app.use((req, res, next) => {
req.server = this;
next();
});
const routes = await traverseDirectory({ dirname: root, recursive: true }, this.registerRoute.bind(this, root));
this.app.use((err: string | Error, req: Request, res: Response, next: NextFunction) => {
res.status(400).send(err);
next(err);
});
return routes;
}
registerRoute(root: string, file: string): any {
if (root.endsWith("/") || root.endsWith("\\")) root = root.slice(0, -1); // removes slash at the end of the root dir
let path = file.replace(root, ""); // remove root from path and
path = path.split(".").slice(0, -1).join("."); // trancate .js/.ts file extension of path
if (path.endsWith("/index")) path = path.slice(0, -6); // delete index from path
try {
var router = require(file);
if (router.router) router = router.router;
if (router.default) router = router.default;
if (!router || router?.prototype?.constructor?.name !== "router")
throw `File doesn't export any default router`;
this.app.use(path, <Router>router);
console.log(`[Routes] ${path} registerd`);
return router;
} catch (error) {
console.error(new Error(`[Server] ¯\\_(ツ)_/¯ Failed to register route ${path}: ${error}`));
}
}
async destroy() {
await this.db.destroy();
await new Promise((res, rej) => {
this.http.close((err) => {
if (err) return rej(err);
return res("");
});
});
}
}
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