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server.js
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server.js
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const express = require("express");
const app = express();
require("dotenv").config();
const mongoose = require("mongoose");
const bcrypt = require("bcrypt");
const multer = require("multer");
const path = require("path");
const jwt = require("jsonwebtoken");
const cookieParser = require('cookie-parser');
const fs = require('fs').promises;
const verifyToken = require("./functions/verifyToken.js");
const checkIfAuthenticated = require("./functions/checkIfAuthenticated.js");
const User = require("./models/User.js");
const Guides = require("./models/Guide.js");
app.use(cookieParser());
app.use("/uploads", express.static("uploads"));
const secretKey = process.env.JWT_SECRET_KEY;
const Schema = mongoose.Schema;
const storage = multer.diskStorage({
destination: function (req, file, cb) {
cb(null, 'uploads/');
},
filename: function (req, file, cb) {
const uniqueSuffix = Date.now() + '-' + Math.round(Math.random() * 1E9);
cb(null, file.fieldname + '-' + uniqueSuffix + path.extname(file.originalname));
}
});
const upload = multer({
storage: multer.diskStorage({
destination: (req, file, cb) => {
cb(null, 'uploads/');
},
filename: (req, file, cb) => {
cb(null, Date.now() + '-' + file.originalname);
}
})
});
app.set("view engine", "ejs");
app.use(express.static("public"));
app.use(express.json());
app.use(express.urlencoded({ extended: true }));
app.use(checkIfAuthenticated);
app.use(verifyToken);
// Protect the newGuide route
app.get("/newGuide", verifyToken, (req, res) => {
res.render("newGuide");
});
mongoose
.connect("mongodb://127.0.0.1:27017/userGuide")
.then(() => console.log("connected!"))
.catch((error) => console.log("error", error));
const saltRounds = 10;
app.get("/", async (req, res) => {
try {
const guides = await Guides.find();
res.render("index", { guides }); // No need to pass `user` anymore
} catch (error) {
console.error("Error fetching guides:", error);
res.status(500).send("Internal server error");
}
});
app.get('/login', checkIfAuthenticated, (req, res) => {
res.render('login');
});
app.post("/login", (req, res) => {
const { uname, psw } = req.body;
User.findOne({ email: uname })
.then((user) => {
if (!user) {
return res.status(404).send("User not found");
}
bcrypt.compare(psw, user.password).then((result) => {
if (result) {
const token = jwt.sign({ id: user._id, email: user.email }, secretKey, { expiresIn: '1h' });
// Send the token as a cookie
res.cookie('token', token, { httpOnly: true, maxAge: 3600000 }); // 1 hour expiration
return res.status(200).redirect("/dashboard");
} else {
return res.status(400).send("Wrong password");
}
});
})
.catch((err) => {
console.error("Error during login:", err);
return res.status(500).send("Internal server error");
});
});
app.get('/signup', (req, res) => {
res.render('signup');
});
app.post("/signup", async (req, res) => {
console.log("signer opp her", req.body);
const { uname, psw, psw2 } = req.body;
// Check if passwords match
if (psw === psw2) {
try {
// Check if the user already exists
const existingUser = await User.findOne({ email: uname });
if (existingUser) {
return res.status(400).send("User already exists with this email."); // Inform the user that the email is taken
}
// Hash the password
const hash = await bcrypt.hash(psw, saltRounds);
const newUser = new User({ email: uname, password: hash });
const result = await newUser.save();
// Create a token for the new user
const token = jwt.sign({ id: result._id, email: result.email }, secretKey, { expiresIn: '1h' });
// Send the token as a cookie
res.cookie('token', token, { httpOnly: true, maxAge: 3600000 }); // 1 hour expiration
return res.status(200).redirect("/dashboard"); // Redirect to dashboard after signup
} catch (error) {
console.error("Error saving user:", error);
return res.status(500).send("Internal server error");
}
} else {
return res.status(400).send("Passwords do not match"); // Plain text response for mismatched passwords
}
});
app.get("/guide", (req, res) => {
res.redirect('/');
});
app.get("/guide/:id", async (req, res) => {
try {
const guideId = req.params.id;
const guide = await Guides.findById(guideId).populate('userId');
if (!guide) {
return res.status(404).render('404', { message: 'Guide not found.', user: req.user });
}
// Get the alert message from query parameters
const alert = req.query.alert;
// Render the guide and pass the user info and alert
res.render("guide", { guide, user: req.user, alert });
} catch (error) {
console.error("Error fetching guide:", error);
res.status(500).render('404', { message: 'Server error. Please try again later.', user: req.user });
}
});
app.get("/dashboard", verifyToken, async (req, res) => {
if (!req.user) {
return res.redirect(`/?alert=sessionExpired`);
}
try {
const userId = req.user.id; // Extract user ID from the verified token
const guides = await Guides.find({ userId }) || []; // Always initialize guides as an empty array
console.log("Fetched guides:", guides); // Debugging output
res.render("dashboard", { user: req.user, guides }); // Pass guides to EJS
} catch (error) {
console.error("Error fetching guides:", error);
res.status(500).send("Internal server error");
}
});
app.get("/newGuide", (req, res) => {
res.render("newGuide");
});
app.post("/newGuide", verifyToken, upload.any(), async (req, res) => {
if (!req.user) {
return res.redirect(`/?alert=sessionExpired`);
}
const userId = req.user.id;
console.log(req.body, "BODY");
console.log(req.files, "FILES");
// Process each section data
const sections = [];
for (let i = 0; i < req.body.header.length; i++) {
// Check if the section exists (wasn't deleted)
if (req.body.header[i]) {
sections.push({
header: req.body.header[i],
description: req.body.description ? req.body.description[i] : null,
image: req.files.find((file) => file.fieldname === `image[${i}]`)
? req.files.find((file) => file.fieldname === `image[${i}]`).filename
: null,
});
}
}
const newGuide = new Guides({
title: req.body.title,
tag: req.body.tag,
sections,
userId: userId,
});
try {
const result = await newGuide.save();
res.redirect("/dashboard");
} catch (error) {
console.error("Error saving guide:", error);
res.status(500).send("Internal server error");
}
});
app.get('/guide/:id/edit', verifyToken, async (req, res) => {
if (!req.user) {
return res.redirect(`/guide/${req.params.id}?alert=sessionExpired`);
}
const guideId = req.params.id;
const userId = req.user.id; // Get the logged-in user's ID from JWT
try {
const guide = await Guides.findById(guideId).populate('userId'); // Populate userId to access creator info
if (!guide) {
return res.status(404).send('Guide not found');
}
if (!guide.userId.equals(userId)) {
return res.redirect(`/guide/${guideId}?alert=unauthorized`);
}
res.render('editGuide', { guide });
} catch (error) {
console.error("Error fetching guide for editing:", error);
res.status(500).send('Server error');
}
});
app.post('/guide/:id/edit', upload.any(), async (req, res) => {
const guideId = req.params.id;
const { title, tag, header, description, existingImage } = req.body;
const uploadedFiles = req.files || [];
if (!req.user) {
return res.redirect(`/guide/${req.params.id}?alert=sessionExpired`);
}
try {
const guide = await Guides.findById(guideId);
if (!guide) {
return res.status(404).send("Guide not found");
}
// Store old image filenames for later comparison
const oldImages = guide.sections.map(section => section.image).filter(Boolean);
// Update guide's title and tag
guide.title = title;
guide.tag = tag;
// Update sections
guide.sections = header.map((headerText, index) => {
let imageFilename = existingImage ? existingImage[index] || '' : '';
// Check if a new image was uploaded for this section
const newImage = uploadedFiles.find(file => file.fieldname === `image[${index}]`);
if (newImage) {
imageFilename = newImage.filename; // Set new image filename if uploaded
}
return {
header: headerText,
description: description[index],
image: imageFilename // Either keep the existing image or use the new one
};
});
// Get the new set of image filenames
const newImages = guide.sections.map(section => section.image).filter(Boolean);
// Find images that are no longer used
const imagesToDelete = oldImages.filter(img => !newImages.includes(img));
// Delete unused images
for (const img of imagesToDelete) {
const imgPath = path.join(__dirname, 'uploads', img);
try {
await fs.unlink(imgPath);
console.log(`Deleted unused image: ${img}`);
} catch (err) {
console.error(`Failed to delete image ${img}:`, err);
}
}
// Save updated guide
await guide.save();
res.redirect(`/guide/${guideId}`);
} catch (error) {
console.error("Error updating guide:", error);
res.status(500).send("Error updating guide");
}
});
app.delete("/guide/:id", verifyToken, async (req, res) => {
const guideId = req.params.id;
try {
// Find the guide to get its associated images
const guide = await Guides.findById(guideId);
if (!guide) {
return res.status(404).json({ message: "Guide not found" });
}
// Loop through the sections and delete images
guide.sections.forEach(section => {
if (section.image) {
const imagePath = path.join(__dirname, 'uploads', section.image);
fs.unlink(imagePath, (err) => {
if (err) {
console.error(`Failed to delete image: ${imagePath}`, err);
} else {
console.log(`Successfully deleted image: ${imagePath}`);
}
});
}
});
// Delete the guide from the database
await Guides.findByIdAndDelete(guideId);
res.status(200).json({ message: "Guide deleted successfully" });
} catch (error) {
console.error("Error deleting guide:", error);
res.status(500).json({ message: "Internal server error" });
}
});
app.get("/logout", (req, res) => {
res.clearCookie("token"); // Clear the token cookie
res.redirect("/"); // Redirect to home or login page
});
app.use((req, res) => {
res.status(404).render('404', { message: 'Page not found.' });
});
app.listen(process.env.PORT);