lesson 2 source code push

.gitignore

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+node_modules
+.env
+public/uploads

.vscode/settings.json

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+{
+  "editor.formatOnSave": true,
+  "[javascript]": {
+    "editor.formatOnSave": true,
+    "editor.defaultFormatter": "esbenp.prettier-vscode"
+  }
+}

app.js

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+// external imports
+const express = require("express");
+const dotenv = require("dotenv");
+const mongoose = require("mongoose");
+const path = require("path");
+const cookieParser = require("cookie-parser");
+const loginRouter = require("./router/loginRouter");
+const usersRouter = require("./router/usersRouter");
+const inboxRouter = require("./router/inboxRouter");
+
+// internal imports
+const {
+  notFoundHandler,
+  errorHandler,
+} = require("./middlewares/common/errorHandler");
+
+const app = express();
+dotenv.config();
+
+// database connection
+mongoose
+  .connect(process.env.MONGO_CONNECTION_STRING, {
+    useNewUrlParser: true,
+    useUnifiedTopology: true,
+  })
+  .then(() => console.log("database connection successful!"))
+  .catch((err) => console.log(err));
+
+// request parsers
+app.use(express.json());
+app.use(express.urlencoded({ extended: true }));
+
+// set view engine
+app.set("view engine", "ejs");
+
+// set static folder
+app.use(express.static(path.join(__dirname, "public")));
+
+// parse cookies
+app.use(cookieParser(process.env.COOKIE_SECRET));
+
+// routing setup
+app.use("/", loginRouter);
+app.use("/users", usersRouter);
+app.use("/inbox", inboxRouter);
+
+// 404 not found handler
+app.use(notFoundHandler);
+
+// common error handler
+app.use(errorHandler);
+
+app.listen(process.env.PORT, () => {
+  console.log(`app listening to port ${process.env.PORT}`);
+});

controller/inboxController.js

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+// get inbox page
+function getInbox(req, res, next) {
+  res.render("inbox");
+}
+
+module.exports = {
+  getInbox,
+};

controller/loginController.js

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+// get login page
+function getLogin(req, res, next) {
+  res.render("index");
+}
+
+module.exports = {
+  getLogin,
+};

controller/usersController.js

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+// get users page
+function getUsers(req, res, next) {
+  res.render("users");
+}
+
+module.exports = {
+  getUsers,
+};

middlewares/common/decorateHtmlResponse.js

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+function decorateHtmlResponse(page_title) {
+  return function (req, res, next) {
+    res.locals.html = true;
+    res.locals.title = `${page_title} - ${process.env.APP_NAME}`;
+    next();
+  };
+}
+
+module.exports = decorateHtmlResponse;

middlewares/common/errorHandler.js

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+const createError = require("http-errors");
+
+// 404 not found handler
+function notFoundHandler(req, res, next) {
+  next(createError(404, "Your requested content was not found!"));
+}
+
+// default error handler
+function errorHandler(err, req, res, next) {
+  res.locals.error =
+    process.env.NODE_ENV === "development" ? err : { message: err.message };
+
+  res.status(err.status || 500);
+
+  if (res.locals.html) {
+    // html response
+    res.render("error", {
+      title: "Error page",
+    });
+  } else {
+    // json response
+    res.json(res.locals.error);
+  }
+}
+
+module.exports = {
+  notFoundHandler,
+  errorHandler,
+};