/
express_server.js
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/
express_server.js
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const express = require("express");
const app = express();
const PORT = 8080;
// const cookieParser = require("cookie-parser");
const bcrypt = require('bcrypt');
const cookieSession = require('cookie-session');
const { getUserByEmail } = require('./helpers');
// Generates random 6 character string
function generateRandomString() {
let final = '';
let string = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
let stringLength = string.length;
for ( let i = 0; i < 6; i++ ) {
final += string.charAt(Math.floor(Math.random() * stringLength));
}
return final;
};
// ORIGINAL FUNCTION FOR REGISTERING NEW USER
// Returns true if users email already exists in users object when registering
// function emailLookup(checkThis) {
// for (let userId in users) {
// if (checkThis === users[userId].email) {
// return true;
// }
// }
// return false;
// };
// returns the userId if their email and password exist
function findUser(email, password) {
for (let userId in users) {
if (email === users[userId].email) {
if (bcrypt.compareSync(password, users[userId].password)) {
return users[userId];
}
// break;
}
} return false;
};
// checks to see if user email exists in database
// const getUserByEmail = function(email, users) {
// for (let userId in users) {
// if (email === users[userId].email) {
// return users[userId];
// }
// } return false;
// };
app.set("view engine", "ejs");
app.use(cookieSession({
name: 'session',
keys: ['asdf'],
}))
// User database
const users = {
"userRandomID": {
id: "userRandomID",
email: "user@example.com",
password: "q"
},
"user2RandomID": {
id: "user2RandomID",
email: "user2@example.com",
password: "q"
}
};
// URL database
const urlDatabase = {
b6UTxQ: { longURL: "https://www.tsn.ca", userID: "aJ48lW" },
i3BoGr: { longURL: "https://www.google.ca", userID: "aJ48lW" }
};
const bodyParser = require("body-parser");
app.use(bodyParser.urlencoded({extended: true}));
app.get("/", (req, res) => {
let user = {user: req.session.user_id};
if (user) {
res.redirect("/urls");
}
res.redirect("/login")
});
app.get("/urls.json", (req, res) => {
res.json(urlDatabase);
});
app.get("/hello", (req, res) => {
res.send("<html><body>Hello <b>World!</b></body></html>\n");
});
// Enter urls_new form
app.get("/urls/new", (req, res) => {
let user = {user: req.session.user_id};
if(user) {
let templateVars = { user: req.session.user_id }
res.render("urls_new", templateVars);
} else {
res.redirect("/login");
}
});
const urlsForUser = function(userId) {
let usersUrls = {};
for (shortURL in urlDatabase) {
if (urlDatabase[shortURL].userID === userId) {
usersUrls[shortURL] = urlDatabase[shortURL];
}
} return usersUrls
}
// myURLS page
app.get("/urls", (req, res) => {
let userId = req.session.user_id;
let templateVars = {
user: users[userId],
urls: urlsForUser(userId)
}
if (userId) {
res.render("urls_index", templateVars);
} else {
res.send("<html><body>Ola amigo... <b>You must login or register!</b></body></html>\n")
}
});
// Might need this later...maybe
// // User login form
// app.post("/urls/login", (req, res) => {
// let username = req.body.username;
// res.cookie("user_name", username);
// res.redirect("/urls");
// // console.log(username);
// });
// User logout form/button
app.post("/logout", (req, res) => {
req.session = null
res.redirect("/login");
})
// urls_show/edit page
app.get("/urls/:shortURL", (req, res) => {
let userId = req.session.user_id;
let shortURL = req.params.shortURL;
if (userId) {
let userUrls = urlsForUser(userId);
if (userUrls[shortURL]) {
let longURL = urlDatabase[shortURL];
urlDatabase[shortURL] = longURL;
let templateVars = { shortURL: shortURL, longURL: longURL, user: req.session.user_id };
res.render("urls_show", templateVars);
} else if (!userUrls[shortURL]) {
res.send("<html><body>Ola amigo... <b>that URL doesn't belong to you :P</b></body></html>\n")
}
else {
res.send("<html><body>Ola amigo... <b>that URL doesn't exist :(</b></body></html>\n")
}
}
else {
res.send("<html><body>Ola amigo... <b>Maybe you should login and create a link yourself :D</b></body></html>\n")
}
});
// urls_show/edit page
app.post("/urls/:shortURL", (req, res) => {
let longURL = req.body.longURL;
let short = req.params.shortURL;
urlDatabase[short].longURL = longURL;
res.redirect("/urls");
})
// Generates random string and redirects to short URL view page
app.post("/urls", (req, res) => {
let randomString = generateRandomString();
let userId = req.session.user_id;
urlDatabase[randomString] = { longURL:req.body.longURL, userID: userId } ;
res.redirect("/urls/" + randomString);
});
// Saves new short URL to database and redirects user to the actual,
// page of the URL if they want
app.get("/u/:shortURL", (req, res) => {
const shortURL = req.params.shortURL;
const longURL = urlDatabase[shortURL].longURL;
res.redirect(longURL);
});
// Delete POST: URL button...redirect to URL index page
app.post("/urls/:shortURL/delete", (req, res) => {
console.log(`User deleted short URL`);
const shortURL = req.params.shortURL;
delete urlDatabase[shortURL];
res.redirect("/urls");
});
// Delete GET
app.get("/urls/:shortURL/delete", (req, res) => {
let userId = req.session.user_id;
if(userId) {
console.log(`User deleted short URL`);
const shortURL = req.params.shortURL;
delete urlDatabase[shortURL];
res.redirect("/urls");
} else {
res.redirect("/register")
}
});
// Edit URL form urls_show
app.post("/urls/:id", (req, res) => {
const newURL = req.body.longURL;
const shortURL = req.params.id;
console.log(`User edited their URL to: ${newURL}`);
urlDatabase["user_name"] = newURL;
res.redirect("/urls");
});
// Register GET page
app.get("/register", (req, res) => {
let templateVars = {
user: req.session.user_id,
urls: urlDatabase,
};
// Hey mentor...if you're reading this leave a message here:____________
res.render("urls_register", templateVars)
});
//Register POST page
app.post("/register", (req, res) => {
let newUserId = generateRandomString();
let newEmail = req.body.email;
let hash = bcrypt.hashSync(req.body.password, 10);
if (newEmail === "" || hash === "" || getUserByEmail(newEmail, users)) {
res.send("<html><body>Ola amigo... <b>400 Bad Request</b></body></html>\n")
} else {
users[newUserId] = {id: newUserId, email: newEmail, password: hash};
req.session.user_id = newUserId;
res.redirect("/urls");
}
});
// GET login page
app.get("/login", (req, res) => {
let newUserId = req.session.user_id;
let templateVars = {
user: undefined,
urls: urlDatabase,
};
res.render("urls_login", templateVars);
});
// POST login page
app.post("/login", (req, res) => {
let password = req.body.password;
let email = req.body.email;
let templateVars = {
user: undefined,
urls: urlDatabase,
};
let foundUser = findUser(email, password);
if (foundUser) {
req.session.user_id = foundUser.id;
res.redirect("/urls");
} else {
res.send("<html><body>Sorry...<b>Wrong password or email my friend...403</b></body></html>\n")
}
});
app.listen(PORT, () => {
console.log(`Example app listening on port ${PORT}!`)
});