Initial commit 🍀

src/api/api-handler.ts

@@ -0,0 +1,55 @@
+import * as express from 'express';
+
+import { IEndpoint } from './endpoints';
+import authenticate from './authenticate';
+import { IAuthContext } from './authenticate';
+import _reply from './reply';
+import limitter from './limitter';
+
+export default async (endpoint: IEndpoint, req: express.Request, res: express.Response) => {
+	const reply = _reply.bind(null, res);
+	let ctx: IAuthContext;
+
+	// Authetication
+	try {
+		ctx = await authenticate(req);
+	} catch (e) {
+		return reply(403, 'AUTHENTICATION_FAILED');
+	}
+
+	if (endpoint.secure && !ctx.isSecure) {
+		return reply(403, 'ACCESS_DENIED');
+	}
+
+	if (endpoint.shouldBeSignin && ctx.user == null) {
+		return reply(401, 'PLZ_SIGNIN');
+	}
+
+	if (ctx.app && endpoint.kind) {
+		if (!ctx.app.permission.some((p: any) => p === endpoint.kind)) {
+			return reply(403, 'ACCESS_DENIED');
+		}
+	}
+
+	if (endpoint.shouldBeSignin) {
+		try {
+			await limitter(endpoint, ctx); // Rate limit
+		} catch (e) {
+			return reply(429);
+		}
+	}
+
+	let exec = require(`${__dirname}/endpoints/${endpoint.name}`);
+
+	if (endpoint.withFile) {
+		exec = exec.bind(null, req.file);
+	}
+
+	// API invoking
+	try {
+		const res = await exec(req.body, ctx.user, ctx.app, ctx.isSecure);
+		reply(res);
+	} catch (e) {
+		reply(400, e);
+	}
+};