app.js

const express = require("express");
const path = require("path");
const cookieParser = require("cookie-parser");

const http = require("http");
const openapiValidator = require("express-openapi-validator");
const app = express();

app.use(express.text());

app.use(express.json());
app.use(express.urlencoded({ extended: true }))
app.use(cookieParser());
app.use(express.static(path.join(__dirname, "public")));
const spec = path.join(__dirname, "openapi.yaml");
app.use("/spec", express.static(spec));

// 1. Install the OpenApiValidator on your express app
app.use(
  openapiValidator.middleware({
    apiSpec: "./openapi.yaml",
  })
);
// 2. Add routes
app.get("/v1/pets", function (req, res, next) {
  res.json([
    { id: 1, name: "max" },
    { id: 2, name: "mini" },
  ]);
});

app.post("/v1/pets", function (req, res, next) {
  res.json({ name: "sparky" });
});

app.get("/v1/pets/:id", function (req, res, next) {
  res.json({ id: req.params.id, name: "sparky" });
});

// 2a. Add a route upload file(s)
app.post("/v1/pets/:id/photos", function (req, res, next) {
  // DO something with the file
  // files are found in req.files
  // non file multipar params are in req.body['my-param']
  console.log(req.files);

  res.json({
    files_metadata: req.files.map((f) => ({
      originalname: f.originalname,
      encoding: f.encoding,
      mimetype: f.mimetype,
      // Buffer of file conents
      // buffer: f.buffer,
    })),
  });
});

// 3. Create a custom error handler
app.use((err, req, res, next) => {
  // format error
  if (!err.status && !err.errors) {
    res.status(500).json({
      errors: [
        {
          message: err.message,
        },
      ],
    });
  } else {
    res.status(err.status).json({
      message: err.message,
      errors: err.errors,
    });
  }
});

const server = http.createServer(app);
server.listen(3000);
console.log("Listening on port 3000");

module.exports = app;