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app.js
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app.js
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const express = require("express");
const path = require("path");
require("dotenv").config();
const methodOverride = require("method-override");
const session = require("express-session");
const MongoStore = require("connect-mongo");
const multer = require("multer");
const compression = require("compression");
const passport = require("passport");
const flash = require("connect-flash");
const sanitizeHtml = require("sanitize-html");
const app = express();
const mongoConnection = require("./connection.js");
const { User, Blog } = require("./models/users.js");
const passportConfig = require("./utility/passport.js");
const upload = require("./utility/multer.js");
app.set("view engine", "ejs");
app.set("views", path.join(__dirname, "views"));
app.use(express.static(path.join(__dirname, "public")));
app.use(
"/data/uploads",
express.static(path.join(__dirname, "public/data/uploads"))
);
app.use(express.urlencoded({ extended: true }));
app.use(methodOverride("_method"));
app.use(
session({
secret: process.env.secret,
resave: false,
saveUninitialized: false,
store: MongoStore.create({ mongoUrl: process.env.MONGO_DB_URL }),
})
);
app.use(passport.initialize());
app.use(passport.session());
passportConfig(passport);
app.use(flash());
app.use(compression());
app.use((req, res, next) => {
res.locals.user = req.user;
res.locals.success_msg = req.flash("success_msg");
res.locals.error_msg = req.flash("error_msg");
res.locals.error = req.flash("error");
next();
});
mongoConnection();
app.get("/", async (req, res) => {
const blogs = await Blog.find().sort({ createdAt: -1 }).limit(3);
const sanitizedBlogs = blogs.map((blog) => ({
...blog.toObject(),
content: sanitizeHtml(blog.content, { allowedTags: [] }),
}));
res.render("index", { blogs: sanitizedBlogs, user: req.user });
});
app.get("/blogs", async (req, res) => {
const blogs = await Blog.find().populate("userId").sort({ createdAt: -1 });
const sanitizedBlogs = blogs.map((blog) => ({
...blog.toObject(),
content: sanitizeHtml(blog.content, { allowedTags: [] }),
}));
res.render("blogs", { blogs: sanitizedBlogs });
});
app.get("/my-blogs", async (req, res) => {
const { id } = req.user;
const blogs = await Blog.find({ userId: id }).sort({ createdAt: -1 });
const sanitizedBlogs = blogs.map((blog) => ({
...blog.toObject(),
content: sanitizeHtml(blog.content, { allowedTags: [] }),
}));
res.render("my-blogs", { blogs: sanitizedBlogs });
});
app.get("/blogs/:id", async (req, res) => {
const { id } = req.params;
const blog = await Blog.findById(id).populate("userId");
const category = blog.category;
const relatedblogs = await Blog.find({
category: category,
_id: { $ne: id },
}).populate("userId");
const sanitizedBlogs = relatedblogs.map((relatedblog) => ({
...relatedblog.toObject(),
content: sanitizeHtml(relatedblog.content, { allowedTags: [] }),
}));
res.render("singleBlog", { blog, relatedblogs: sanitizedBlogs });
});
app.post("/blogs", upload.single("image"), async (req, res) => {
if (req.file.size > 600 * 1024) {
req.flash("error_msg", "Image size should not exceed 600 KB.");
return res.redirect("/create-blog");
}
const { title, category, content } = req.body;
const image = req.file ? `/data/uploads/${req.file.filename}` : "";
try {
const newBlog = new Blog({
userId: req.user._id,
title,
category,
image,
content,
});
await newBlog.save();
await User.findByIdAndUpdate(req.user._id, {
$push: { blogs: newBlog },
});
req.flash("success_msg", "Blog is Uploaded Successfully");
res.redirect("/blogs");
} catch (err) {
console.log(err);
req.flash("error_msg", "Error Uploading Blog");
res.status(500).redirect("/create-blog");
}
});
app.get("/blogs/edit/:id", async (req, res) => {
const { id } = req.params;
const blog = await Blog.findById(id);
res.render("edit", { blog });
});
app.delete("/blogs/:id", async (req, res) => {
const { id } = req.params;
await Blog.deleteOne({ _id: id });
res.redirect("/my-blogs");
});
app.patch("/blogs/:id", upload.single("image"), async (req, res) => {
const { id } = req.params;
const { title, category, content } = req.body;
try {
const updateData = {
title,
category,
content,
};
if (req.file) {
updateData.image = `/data/uploads/${req.file.filename}`;
}
await Blog.findByIdAndUpdate(id, { $set: updateData });
req.flash("success_msg", "Blog is updated Successfully");
res.redirect("/my-blogs");
} catch (err) {
console.log(err);
req.flash("error_msg", "Error updating Blog");
res.status(500).redirect(`/blogs/edit/${id}`);
}
});
app.get("/login", (req, res) => {
if (req.isAuthenticated()) return res.redirect("/blogs");
res.render("login");
});
app.post(
"/login",
passport.authenticate("local", {
successRedirect: "/",
failureRedirect: "/login",
failureFlash: true,
})
);
//register
app.get("/register", (req, res) => {
res.render("register");
});
app.post("/register", async (req, res) => {
try {
const newUser = new User({ ...req.body });
await newUser.save();
req.flash("success_msg", "You are now registered and can log in");
res.redirect("/login");
} catch (err) {
console.log(err);
req.flash("error_msg", "Error registering new user.");
res.status(500).redirect("/register");
}
});
app.get("/create-blog", (req, res) => {
if (!req.isAuthenticated()) return res.redirect("/login");
res.render("create-blog");
});
app.get("/logout", (req, res, next) => {
req.logout(function (err) {
if (err) {
return next(err);
}
req.flash("success_msg", "You are logged out");
res.redirect("/login");
});
});
app.use((err, req, res, next) => {
const redirectUrl = req.body.edit
? `/blogs/edit/${req.body.id}`
: "/create-blog";
if (err instanceof multer.MulterError) {
if (err.code === "LIMIT_FILE_SIZE") {
req.flash("error_msg", "Image size should not exceed 1 MB.");
return res.redirect(redirectUrl);
} else if (err.code === "LIMIT_UNEXPECTED_FILE") {
req.flash("error_msg", "Invalid file type.");
return res.redirect(redirectUrl);
}
} else {
req.flash("error_msg", "An error occurred during file upload.");
res.redirect(redirectUrl);
}
});
app.listen(process.env.PORT, () => {
console.log(`Server is running on localhost:${process.env.PORT}`);
});