test

.gitignore

@@ -1,129 +1,4 @@
-# Byte-compiled / optimized / DLL files
-__pycache__/
-*.py[cod]
-*$py.class
-
-# C extensions
-*.so
-
 # Distribution / packaging
-.Python
-build/
-develop-eggs/
-dist/
-downloads/
-eggs/
-.eggs/
-lib/
-lib64/
-parts/
-sdist/
-var/
-wheels/
-pip-wheel-metadata/
-share/python-wheels/
-*.egg-info/
-.installed.cfg
-*.egg
-MANIFEST
-
-# PyInstaller
-#  Usually these files are written by a python script from a template
-#  before PyInstaller builds the exe, so as to inject date/other infos into it.
-*.manifest
-*.spec
-
-# Installer logs
-pip-log.txt
-pip-delete-this-directory.txt
-
-# Unit test / coverage reports
-htmlcov/
-.tox/
-.nox/
-.coverage
-.coverage.*
-.cache
-nosetests.xml
-coverage.xml
-*.cover
-*.py,cover
-.hypothesis/
-.pytest_cache/
-
-# Translations
-*.mo
-*.pot
-
-# Django stuff:
-*.log
-local_settings.py
-db.sqlite3
-db.sqlite3-journal
-
-# Flask stuff:
-instance/
-.webassets-cache
-
-# Scrapy stuff:
-.scrapy
-
-# Sphinx documentation
-docs/_build/
-
-# PyBuilder
-target/
-
-# Jupyter Notebook
-.ipynb_checkpoints
-
-# IPython
-profile_default/
-ipython_config.py
-
-# pyenv
-.python-version
-
-# pipenv
-#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
-#   However, in case of collaboration, if having platform-specific dependencies or dependencies
-#   having no cross-platform support, pipenv may install dependencies that don't work, or not
-#   install all needed dependencies.
-#Pipfile.lock
-
-# PEP 582; used by e.g. github.com/David-OConnor/pyflow
-__pypackages__/
-
-# Celery stuff
-celerybeat-schedule
-celerybeat.pid
-
-# SageMath parsed files
-*.sage.py
-
-# Environments
-.env
-.venv
-env/
-venv/
-ENV/
-env.bak/
-venv.bak/
-
-# Spyder project settings
-.spyderproject
-.spyproject
-
-# Rope project settings
-.ropeproject
-
-# mkdocs documentation
-/site
+node_modules
 
-# mypy
-.mypy_cache/
-.dmypy.json
-dmypy.json
 
-# Pyre type checker
-.pyre/

final_project/index.js

@@ -0,0 +1,23 @@
+const express = require('express');
+const jwt = require('jsonwebtoken');
+const session = require('express-session')
+const customer_routes = require('./router/auth_users.js').authenticated;
+const genl_routes = require('./router/general.js').general;
+
+const app = express();
+
+app.use(express.json());
+
+app.use("/customer",session({secret:"fingerprint_customer",resave: true, saveUninitialized: true}))
+
+app.use("/customer/auth/*", function auth(req,res,next){
+//Write the authenication mechanism here
+
+});
+
+const PORT =5000;
+
+app.use("/customer", customer_routes);
+app.use("/", genl_routes);
+
+app.listen(PORT,()=>console.log("Server is running"));

final_project/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "bookshop",
+  "version": "1.0.1",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "nodemon index.js"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "MIT",
+  "dependencies": {
+    "express": "^4.18.1",
+    "express-session": "^1.17.3",
+    "jsonwebtoken": "^8.5.1",
+    "nodemon": "^2.0.19"
+  }
+}

final_project/router/auth_users.js

@@ -0,0 +1,84 @@
+const express = require('express');
+const jwt = require('jsonwebtoken');
+let books = require("./booksdb.js");
+const regd_users = express.Router();
+
+let users = [];
+
+const isValid = (username)=>{ //returns boolean
+//write code to check is the username is valid
+}
+
+const authenticatedUser = (username,password)=>{ //returns boolean
+//write code to check if username and password match the one we have in records.
+}
+
+//only registered users can login
+regd_users.post("/login", (req,res) => {
+  const { username, password } = req.body;
+
+  // Check if both fields are provided
+  if (!username || !password) {
+    return res.status(400).json({ message: "Username and password are required." });
+  }
+
+  // Validate credentials
+  if (!authenticatedUser(username, password)) {
+    return res.status(401).json({ message: "Invalid username or password." });
+  }
+
+  // Generate JWT
+  const accessToken = jwt.sign({ username }, 'access', { expiresIn: '1h' });
+
+  // Save token in session
+  req.session.authorization = {
+    accessToken,
+    username
+  };
+
+  return res.status(200).json({ message: "User successfully logged in." });
+});
+
+// Add a book review
+regd_users.put("/auth/review/:isbn", (req, res) => {
+  //Write your code here
+  const token = req.headers['auth-token'];
+  const username = getUsernameFromToken(token);
+  if (!username) {
+    return res.status(401).json({ message: "Unauthorized. Please login." });
+  }
+  const isbn = req.params.isbn;
+  const review = req.query.review;
+  if (!review) {
+    return res.status(400).json({ message: "Review query parameter is required." });
+  }
+  if (!books[isbn]) {
+    return res.status(404).json({ message: "Book not found." });
+  }
+  if (!books[isbn].reviews) {
+      books[isbn].reviews = {};
+  }
+  books[isbn].reviews[username] = review;
+  return res.status(200).json({ message: `Review for book with ISBN ${isbn} has been added/updated` });
+});
+
+regd_users.delete("/auth/review/:isbn", (req, res) => {
+  const token = req.headers['auth-token'];
+  const username = getUsernameFromToken(token);
+  if (!username) {
+    return res.status(401).json({ message: "Unauthorized. Please login." });
+  }
+  const isbn = req.params.isbn;
+  if (!books[isbn]) {
+    return res.status(404).json({ message: "Book not found." });
+  }
+  if (!books[isbn].reviews || !books[isbn].reviews[username]) {
+    return res.status(404).json({ message: "Review not found for this user and ISBN." });
+  }
+  delete books[isbn].reviews[username];
+  return res.status(200).json({ message: "Review deleted successfully." });
+});
+
+module.exports.authenticated = regd_users;
+module.exports.isValid = isValid;
+module.exports.users = users;

final_project/router/booksdb.js

@@ -0,0 +1,14 @@
+let books = {
+      1: {"author": "Chinua Achebe","title": "Things Fall Apart", "reviews": {} },
+      2: {"author": "Hans Christian Andersen","title": "Fairy tales", "reviews": {} },
+      3: {"author": "Dante Alighieri","title": "The Divine Comedy", "reviews": {} },
+      4: {"author": "Unknown","title": "The Epic Of Gilgamesh", "reviews": {} },
+      5: {"author": "Unknown","title": "The Book Of Job", "reviews": {} },
+      6: {"author": "Unknown","title": "One Thousand and One Nights", "reviews": {} },
+      7: {"author": "Unknown","title": "Nj\u00e1l's Saga", "reviews": {} },
+      8: {"author": "Jane Austen","title": "Pride and Prejudice", "reviews": {} },
+      9: {"author": "Honor\u00e9 de Balzac","title": "Le P\u00e8re Goriot", "reviews": {} },
+      10: {"author": "Samuel Beckett","title": "Molloy, Malone Dies, The Unnamable, the trilogy", "reviews": {} }
+}
+
+module.exports=books;

final_project/router/general.js

@@ -0,0 +1,106 @@
+const express = require('express');
+let books = require("./booksdb.js");
+let isValid = require("./auth_users.js").isValid;
+let users = require("./auth_users.js").users;
+const public_users = express.Router();
+const { type } = require('express/lib/response.js');
+
+
+public_users.post("/register", (req,res) => {
+  //Write your code here
+  const {username,password}=req.body;
+  if(!username || !password){
+    return res.status(400).json({ message: "Username and password are required." });
+  }
+  if (users.find(user => user.username === username)) {
+    return res.status(400).json({ message: "Username already exists. Please choose a different one." });
+  }
+  users.push({ username, password });
+  return res.status(200).json({ message: "User registered successfully." });
+});
+
+
+// Get the book list available in the shop
+public_users.get('/', function (req, res) {
+    //Write your code here
+    new Promise((resolve, reject) => {
+        resolve(JSON.stringify(books));
+    })
+        .then(data => {
+            res.status(200).json(data);
+        })
+        .catch(error => {
+            res.status(500).json({ message: "Internal server error" });
+        });
+});
+
+// Get book details based on ISBN
+public_users.get('/isbn/:isbn', function (req, res) {
+    new Promise((resolve, reject) => {
+        const isbn = req.params.isbn;
+        const book = books[isbn];
+        if (!book) {
+            reject("Book not found");
+        } else {
+            resolve(book);
+        }
+    })
+        .then(data => {
+            res.status(200).json(data);
+        })
+        .catch(error => {
+            res.status(404).json({ message: error });
+        });
+});
+
+// Get book details based on author
+public_users.get('/author/:author', function (req, res) {
+    new Promise((resolve, reject) => {
+        const author = req.params.author;
+        const booksByAuthor = Object.values(books).filter(b => b.author === author);
+        if (booksByAuthor.length === 0) {
+            reject("No books found for this author");
+        } else {
+            resolve(booksByAuthor);
+        }
+    })
+        .then(data => {
+            res.status(200).json(data);
+        })
+        .catch(error => {
+            res.status(404).json({ message: error });
+        });
+});
+
+
+// Get all books based on title
+public_users.get('/title/:title', function (req, res) {
+    //Write your code here
+    new Promise((resolve, reject) => {
+        const title = req.params.title;
+        const booksByTitle = Object.values(books).filter(b => b.title.includes(title));
+        if (booksByTitle.length === 0) {
+            reject("No books found with this title");
+        } else {
+            resolve(booksByTitle);
+        }
+    })
+        .then(data => {
+            res.status(200).json(data);
+        })
+        .catch(error => {
+            res.status(404).json({ message: error });
+        });
+});
+
+//  Get book review
+public_users.get('/review/:isbn', function (req, res) {
+    const isbn = req.params.isbn;
+    const book = books[isbn];
+    if (!book || !book.reviews) {
+        return res.status(404).json({ message: "Reviews not found for this book" });
+    }
+    return res.status(200).json(book.reviews);
+});
+
+module.exports.general = public_users;