elysia-example

elysia-example.ts

import { Elysia, ErrorHandler, t } from "elysia";
import { logger } from "./lib/logger";
import bearer from "@elysiajs/bearer";
import config from "./lib/config";
import swagger from "@elysiajs/swagger";
import { OverlandSchema } from "./lib/overland";

class UnauthorizedError extends Error {
  code = "UNAUTHORIZED";
  status = 403;

  constructor(message: string) {
    super(message);
  }
}

const handleError: ErrorHandler = ({ code, error }) => {
  logger.error(error);

  return {
    code,
    message: error.message,
  };
};

const logRequest = (context: { [x: string]: any }) => {
  const { request } = context;

  logger.info(
    `${request.method} ${request.url} - ${request.headers.get("user-agent")}`
  );
};

const apiRouter = new Elysia().group("/api", (app) =>
  app.use(swagger()).guard(
    {
      headers: t.Object({
        authorization: t.String(),
      }),
    },
    (app) =>
      app
        .use(bearer())
        .on("beforeHandle", ({ bearer, set }) => {
          if (bearer !== config.api.token) {
            set.status = 403;
            throw new UnauthorizedError("Invalid token");
          }
        })
        .post("/locations", async ({ body }) => body, {
          body: OverlandSchema,
        })
  )
);

export const app = new Elysia()
  .onError(handleError)
  .on("beforeHandle", logRequest)
  .use(apiRouter)
  .listen(process.env.PORT || 3000);

logger.info(
  `🦊 Elysia is running at ${app.server?.hostname}:${app.server?.port}`
);