init

src/app.js

@@ -0,0 +1,50 @@
+const cors = require("cors");
+const express = require("express");
+const swaggerUi = require("swagger-ui-express");
+const { pingMongo } = require("./db/client");
+const { router: apiRouter } = require("./routes/api");
+const { openApiDocument } = require("./swagger/openapi");
+
+function createApp() {
+	const app = express();
+
+	app.use(cors());
+	app.use(express.json({ limit: "2mb" }));
+
+	app.get("/", (request, response) => {
+		response.redirect("/docs");
+	});
+
+	app.get("/health", async (request, response) => {
+		try {
+			await pingMongo();
+			response.json({ ok: true, mongo: "connected" });
+		} catch (error) {
+			response
+				.status(503)
+				.json({ ok: false, mongo: "unavailable", error: error.message });
+		}
+	});
+
+	app.get("/openapi.json", (request, response) => {
+		response.json(openApiDocument);
+	});
+
+	app.use("/docs", swaggerUi.serve, swaggerUi.setup(openApiDocument));
+	app.use("/api", apiRouter);
+
+	app.use((request, response) => {
+		response.status(404).json({ error: "Not found" });
+	});
+
+	app.use((error, request, response, next) => {
+		const status = error.status || 500;
+		response
+			.status(status)
+			.json({ error: error.message || "Internal server error" });
+	});
+
+	return app;
+}
+
+module.exports = { createApp };