more examples

basic-info-node-backend/src/app.js

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+const express = require("express");
+const fs = require("fs");
+const app = express();
+const authorRouter = require("./routes/authorRouter");
+const bookRouter = require("./routes/bookRouter");
+const indexRouter = require("./routes/indexRouter");
+
+app.use("/authors", authorRouter);
+app.use("/books", bookRouter);
+
+app.get("/", (req, res) => {
+  let filename =
+    "/home/smig/repos/github/odin-codeprojects/basic-info-node-backend/src/content/index.html";
+  res.sendFile(filename, (err) => {
+    if (err) {
+      res.send("err");
+    } else {
+      console.log("sent", filename);
+    }
+  });
+});
+
+app.get("/about", (req, res) => {
+  res.sendFile(
+    "/home/smig/repos/github/odin-codeprojects/basic-info-node-backend/src/content/about.html",
+    (err) => {
+      if (err) res.status(404).send("err", err);
+    },
+  );
+});
+
+app.get("/contact-me", (req, res) => {
+  res.sendFile(
+    "/home/smig/repos/github/odin-codeprojects/basic-info-node-backend/src/content/contact.html",
+    (err) => {
+      if (err) res.send("err:", err);
+    },
+  );
+});
+
+app.use((req, res, next) => {
+  console.log("Another middleware");
+  res.send("Response from this middleware");
+});
+
+app.use((req, res, next) => {
+  throw new Error("OH NO!");
+});
+
+app.use((err, req, res, ext) => {
+  console.error(err);
+  res.status(err.statuscode || 500).send(err.message);
+});
+
+const PORT = 3000;
+
+app.listen(PORT, () => {
+  console.log("My first time running express baby!");
+});

basic-info-node-backend/src/controllers/authorController.js

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+const asyncHandler = require("express-async-handler");
+
+const db = require("../db");
+const CustomNotFoundError = require("../errors/CustomNotFoundError");
+
+const getAuthorById = asyncHandler(async (req, res) => {
+  const { authorId } = req.params;
+
+  const author = await db.getAuthorById(Number(authorId));
+
+  if (!author) {
+    throw new CustomNotFoundError("Author not found");
+  }
+
+  res.send(`Author name: ${author.name}`);
+});
+
+module.exports = { getAuthorById };

basic-info-node-backend/src/db.js

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+const authors = [
+  { id: 1, name: "Bob" },
+  { id: 2, name: "Jane" },
+  { id: 3, name: "Fred" },
+];
+
+async function getAuthorById(authorId) {
+  return authors.find((author) => author.id === authorId);
+}
+
+module.exports = { getAuthorById };

basic-info-node-backend/src/errors/CustomNotFoundError.js

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+class CustomNotFoundError extends Error {
+  constructor(message) {
+    super(message);
+    this.statusCode = 404;
+
+    this.name = "NotFoundError";
+  }
+}
+
+module.exports = CustomNotFoundError;

basic-info-node-backend/src/routes/authorRouter.js

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+const { Router } = require("express");
+
+const { getAuthorById } = require("../controllers/authorController");
+
+const authorRouter = Router();
+
+authorRouter.get("/", (req, res) => res.send("All Authors"));
+
+authorRouter.get("/:authorId", getAuthorById);
+
+module.exports = authorRouter;

basic-info-node-backend/src/routes/bookRouter.js

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+const { Router } = require("express");
+
+const bookRouter = Router();
+
+bookRouter.get("/", (req, res) => res.send("All Books"));
+
+module.exports = bookRouter;

basic-info-node-backend/src/routes/indexRouter.js

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+const { Router } = require("express");
+
+const indexRouter = Router();
+
+indexRouter.get("/", (req, res) => res.send("All Indexes"));
+
+module.exports = indexRouter;