diff --git a/.gitignore b/.gitignore
index fcf25b5..323a898 100644
--- a/.gitignore
+++ b/.gitignore
@@ -40,6 +40,7 @@ npm-debug.log
 yarn-error.log
 testem.log
 /typings
+*.env
 
 # System Files
 .DS_Store
diff --git a/backend/Dockerfile b/backend/Dockerfile
index 047823e..086b40b 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -3,4 +3,5 @@ WORKDIR /app-backend
 COPY ["package.json", "package-lock.json*", "./"]
 RUN npm install
 COPY . .
+CMD ./app/jwtRS256.sh
 CMD node server.js
diff --git a/backend/app/config/host.config.js b/backend/app/config/host.config.js
new file mode 100644
index 0000000..d743011
--- /dev/null
+++ b/backend/app/config/host.config.js
@@ -0,0 +1,8 @@
+module.exports = {
+  youtube: {
+    baseAPIUrl: 'https://www.youtube.com/'
+  },
+  dailymotion: {
+    baseAPIUrl: 'https://api.dailymotion.com/'
+  }
+};
diff --git a/backend/app/config/mongodb.config.js b/backend/app/config/mongodb.config.js
new file mode 100644
index 0000000..0914e67
--- /dev/null
+++ b/backend/app/config/mongodb.config.js
@@ -0,0 +1,3 @@
+module.exports = {
+  url: "mongodb://127.0.0.1:27017/polynotfound"
+};
diff --git a/backend/app/config/response.config.js b/backend/app/config/response.config.js
new file mode 100644
index 0000000..4278756
--- /dev/null
+++ b/backend/app/config/response.config.js
@@ -0,0 +1,9 @@
+function sendMessage (res, successCode, data, token=null) {
+  res.status(200).json({ status: 'success', successCode: successCode, token: token, data: data });
+}
+
+function sendError (res, statusCode, errorCode, reason, token=null) {
+  res.status(statusCode).json({ status: 'error', errorCode: errorCode, data: { token: token, reason: reason }});
+}
+
+module.exports = { sendMessage, sendError };
diff --git a/backend/app/config/role.config.js b/backend/app/config/role.config.js
new file mode 100644
index 0000000..32851a0
--- /dev/null
+++ b/backend/app/config/role.config.js
@@ -0,0 +1,5 @@
+module.exports = {
+  User: 0,
+  Advertiser: 5,
+  Admin: 10
+};
diff --git a/backend/app/config/sessionJWT.config.js b/backend/app/config/sessionJWT.config.js
new file mode 100644
index 0000000..bca0408
--- /dev/null
+++ b/backend/app/config/sessionJWT.config.js
@@ -0,0 +1,99 @@
+const sessionJWTConfig = require ('jsonwebtoken');
+require('dotenv').config({ path: './app/.env' });
+const {sendError} = require ("./response.config");
+
+if(process.env.JWTRS256_PRIVATE_KEY === undefined || process.env.JWTRS256_PUBLIC_KEY === undefined){
+  console.log('Error Env Variables');
+  process.exit();
+}
+
+console.log('Env variables received');
+const JWTRS256_PRIVATE_KEY = Buffer.from(process.env.JWTRS256_PRIVATE_KEY, 'base64').toString('utf-8');
+const JWTRS256_PUBLIC_KEY = Buffer.from(process.env.JWTRS256_PUBLIC_KEY, 'base64').toString('utf-8');
+
+
+function createSessionJWT (id, login, role) {
+  return sessionJWTConfig.sign(
+    {
+      id: id,
+      login: login,
+      role: role,
+      midExp: Math.floor(Date.now() / 1000) + 1800
+    },
+    JWTRS256_PRIVATE_KEY,
+    {
+      algorithm: 'RS256',
+      expiresIn: '1h'
+    }
+  );
+}
+
+function createSessionCookie(req, res, payload) {
+  let jwtToken;
+  if (typeof payload.id !== 'undefined' &&
+    typeof payload.login !== 'undefined' &&
+    typeof payload.role !== 'undefined' &&
+    typeof payload.midExp !== 'undefined' &&
+    (Math.floor(Date.now() / 1000) <= payload.midExp)) {
+    jwtToken = req.headers.cookie;
+  }
+  else {
+    jwtToken = createSessionJWT(payload.id, payload.login, payload.role);
+  }
+  res.cookie('SESSIONID', jwtToken, {httpOnly:true, secure:false});
+}
+
+function decodeSessionCookie(sessionid) {
+  if (typeof sessionid === 'undefined') {
+    return {id: -1, login: -1, role: -1};
+  }
+  try {
+    const token = sessionJWTConfig.verify(
+      sessionid,
+      JWTRS256_PUBLIC_KEY,
+      {algorithms: ['RS256']});
+    return {token: token};
+  }
+  catch (err) {
+    return {id: -1, login: -1, role: -1};
+  }
+}
+
+function getSession(sessionid) {
+  return decodeSessionCookie(sessionid);
+}
+module.exports.getSession = getSession
+
+function setSessionCookie (req, res, session) {
+  createSessionCookie(req, res, session);
+}
+module.exports.setSessionCookie = setSessionCookie;
+
+function getToken(session) {
+  if (typeof session === 'undefined' || typeof session.token === 'undefined') return -1;
+  return session.token;
+}
+module.exports.getToken = getToken;
+
+function checkLogin(req, res, role=null){
+  if(typeof req.cookies !== 'undefined'){
+    const session = getSession(req.cookies.SESSIONID);
+    const token = getToken(session);
+    if(token.login === 'undefined' || token.login === -1){
+      return sendError(res, 500, -1, "User not authenticated.");
+    } else{
+      if(role === null){
+        return token;
+      } else{
+        if(token.role !== 'undefined' && role.includes(token.role)){
+          return token;
+        } else{
+          return sendError(res, 500, -1, "User doesn't have permission.", token);
+        }
+      }
+    }
+  } else {
+    return sendError(res, 500, -1, "Cookies don't exist.");
+  }
+}
+module.exports.checkLogin = checkLogin;
diff --git a/backend/app/controllers/ad.controller.js b/backend/app/controllers/ad.controller.js
new file mode 100644
index 0000000..5845b33
--- /dev/null
+++ b/backend/app/controllers/ad.controller.js
@@ -0,0 +1,53 @@
+const db = require("../models/mongodb.model");
+const {sendError, sendMessage} = require ("../config/response.config");
+const {checkLogin} = require("../config/sessionJWT.config");
+const roles = require("../config/role.config");
+const Ads = db.ads;
+
+// Create a new Ad
+exports.create = (req, res) => {
+  const token = checkLogin(req, res, [roles.Admin, roles.Advertiser]);
+  if(token){
+    return sendError(res, 501, -1, "Ads.create not Implemented", token);
+  }
+};
+
+// Retrieve all Ads
+exports.findAll = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Ads.findAll not Implemented", token);
+  }
+};
+
+// Retrieve a single Ad with id
+exports.findOne = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Ads.findOne not Implemented", token);
+  }
+};
+
+// Update a Ad with id
+exports.update = (req, res) => {
+  const token = checkLogin(req, res, [roles.Admin, roles.Advertiser]);
+  if(token){
+    return sendError(res, 501, -1, "Ads.update not Implemented", token);
+  }
+};
+
+// Delete a Ad with id
+exports.delete = (req, res) => {
+  const token = checkLogin(req, res, [roles.Admin, roles.Advertiser]);
+  if(token){
+    return sendError(res, 501, -1, "Ads.delete not Implemented", token);
+  }
+};
+
+// Delete all Ads
+exports.deleteAll = (req, res) => {
+  const token = checkLogin(req, res, [roles.Admin, roles.Advertiser]);
+  if(token){
+    return sendError(res, 501, -1, "Ads.deleteAll not Implemented", token);
+  }
+};
diff --git a/backend/app/controllers/playlist.controller.js b/backend/app/controllers/playlist.controller.js
new file mode 100644
index 0000000..1b5ae3f
--- /dev/null
+++ b/backend/app/controllers/playlist.controller.js
@@ -0,0 +1,52 @@
+const db = require("../models/mongodb.model");
+const {sendError, sendMessage} = require ("../config/response.config");
+const {checkLogin} = require("../config/sessionJWT.config");
+const Playlist = db.playlists;
+
+// Create a new Playlist
+exports.create = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Playlist.create not Implemented", token);
+  }
+};
+
+// Retrieve all Playlists
+exports.findAll = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Playlist.findAll not Implemented", token);
+  }
+};
+
+// Retrieve a single Playlist with id
+exports.findOne = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Playlist.findOne not Implemented", token);
+  }
+};
+
+// Update a Playlist with id
+exports.update = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Playlist.update not Implemented", token);
+  }
+};
+
+// Delete a Playlist with id
+exports.delete = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Playlist.delete not Implemented", token);
+  }
+};
+
+// Delete all Playlists
+exports.deleteAll = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Playlist.deleteAll not Implemented", token);
+  }
+};
diff --git a/backend/app/controllers/user.controller.js b/backend/app/controllers/user.controller.js
new file mode 100644
index 0000000..2113c7f
--- /dev/null
+++ b/backend/app/controllers/user.controller.js
@@ -0,0 +1,175 @@
+const db = require("../models/mongodb.model");
+const {sendError, sendMessage} = require ("../config/response.config");
+const {checkLogin, setSessionCookie} = require("../config/sessionJWT.config");
+const roles = require("../config/role.config");
+const User = db.users;
+
+// Authenticate a User
+exports.auth = (req, res) => {
+  // Validate request
+  if (!req.body.login || !req.body.hashPass) {
+    sendError(res, 400,-1,"Content can not be empty ! (login and hashPass needed)");
+  } else{
+    // Check User in the database
+    User
+      .findOne({login: req.body.login, hashPass: req.body.hashPass}, {role: true})
+      .then(data => {
+        if (data !== null){
+          setSessionCookie(req, res, {id: data._id, login: req.body.login, role: data.role});
+          return sendMessage(res, 1, true);
+        } else {
+          setSessionCookie(req, res, {id: -1, login: -1, role: -1 });
+          return sendError(res, 500, -1, "Invalid login or password.");
+        }
+      })
+      .catch(err => {
+        sendError(res, 500,-1,err.message || "Some error occurred while authenticating the User.");
+      });
+  }
+};
+
+// Logout a User
+exports.disconnect = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    console.log(token);
+    setSessionCookie(req, res, {id: -1, login: -1, role: -1});
+    return sendMessage(res, 1, {message: "User disconnected"}, token);
+  }
+};
+
+// Create and Save a new User
+exports.create = (req, res) => {
+  // Validate request
+  if (!req.body.login || !req.body.hashPass || !req.body.mail) {
+    sendError(res, 400,-1,"Content can not be empty ! (login, hashPass and mail needed");
+  }
+  else{
+    User.exists({login: req.body.login}, function (err, docs){
+      if(err){
+        sendError(res, 500,-1,err.message || "Some error occurred while checking if the User already exists.");
+      } else{
+        if(docs === null) {
+          const user = new User({
+            login: req.body.login,
+            hashPass: req.body.hashPass,
+            mail: req.body.mail,
+            role: req.body.role
+          });
+
+          // Save User in the database
+          user
+            .save(user)
+            .then(data => {
+              data.hashPass = undefined; // Hiding hashPass on return
+              sendMessage(res, 1, data)
+            })
+            .catch(err => {
+              sendError(res, 500,-1,err.message || "Some error occurred while creating the User.");
+            });
+        } else{
+          sendError(res, 500, -1, err || "User already exists.");
+        }
+      }
+    });
+  }
+};
+
+// Retrieve all Users from the database if admin.
+exports.findAll = (req, res) => {
+  const token = checkLogin(req, res, [roles.Admin]);
+  if(token){
+    console.log(token);
+    const login = req.query.login;
+    let condition = login ? { login: { $regex: new RegExp(login), $options: "i" } } : {};
+
+    User.find(condition, {hashPass: false})
+      .then(data => {
+        sendMessage(res, 1, data, token)
+      })
+      .catch(err => {
+        sendError(res,500,-1,err.message || "Some error occurred while retrieving users.", token);
+      });
+  }
+};
+
+// Find a single User with login if admin or login from cookie session
+exports.findOne = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    let login;
+    if(token.role === [roles.Admin]){
+      login = req.params.login;
+
+    } else{
+      login = token.login;
+    }
+    console.log(token.role, login);
+    User.find({login: login}, {hashPass: false})
+      .then(data => {
+        if (data){
+          sendMessage(res, 1, data);
+        } else {
+          sendError(res,404,-1,"Not found User with login " + login );
+        }
+      })
+      .catch(err => {
+        sendError(res,500,-1,err.message || "Error retrieving User with login=" + login );
+      });
+  }
+};
+
+// Update a User by the id in the request
+exports.update = (req, res) => {
+  if (!req.body) {
+    sendError(res,400,-1,"Data to update can not be empty!");
+  } else{
+    const id = req.params.id;
+
+    User.findByIdAndUpdate(id, req.body, { useFindAndModify: false })
+      .then(data => {
+        if (data) {
+          sendMessage(res, 1, { message: "User was updated successfully." });
+        } else {
+          sendError(res,404,-1,`Cannot update User with id=${id}. Maybe User was not found!`);
+        }
+      })
+      .catch(err => {
+        sendError(res,500,-1,err.message || "Error updating User with id=" + id);
+      });
+  }
+};
+
+// Delete a User with the specified id in the request
+exports.delete = (req, res) => {
+  const id = req.params.id;
+
+  User.findByIdAndRemove(id)
+    .then(data => {
+      if (data) {
+        sendMessage(res, 1, { message: "User was deleted successfully!" });
+      } else {
+        sendError(res,404,-1,`Cannot delete User with id=${id}. Maybe User was not found!`);
+      }
+    })
+    .catch(err => {
+      sendError(res,500,-1,err.message || "Could not delete User with id=" + id);
+    });
+};
+
+// Delete all Users from the database.
+exports.deleteAll = (req, res) => {
+  const token = checkLogin(req, res, [roles.Admin]);
+  if(token) {
+    console.log(token);
+    User.deleteMany({})
+      .then(data => {
+        sendMessage(res, 1, {
+          message: `${data.deletedCount} Users were deleted successfully!`
+        });
+      })
+      .catch(err => {
+        sendError(res, 500, -1, err.message || "Some error occurred while removing all Users.");
+      });
+  }
+};
diff --git a/backend/app/controllers/video.controller.js b/backend/app/controllers/video.controller.js
new file mode 100644
index 0000000..4383868
--- /dev/null
+++ b/backend/app/controllers/video.controller.js
@@ -0,0 +1,60 @@
+const db = require("../models/mongodb.model");
+const {sendError, sendMessage} = require ("../config/response.config");
+const {checkLogin} = require("../config/sessionJWT.config");
+const Video = db.video;
+
+// Search Video
+exports.search = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Video.search not Implemented", token);
+  }
+};
+
+// Create a new Video
+exports.create = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Video.create not Implemented", token);
+  }
+};
+
+// Retrieve all Videos
+exports.findAll = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Video.findAll not Implemented", token);
+  }
+};
+
+// Retrieve a single Video with id
+exports.findOne = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Video.findOne not Implemented", token);
+  }
+};
+
+// Update a Video with id
+exports.update = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Video.update not Implemented", token);
+  }
+};
+
+// Delete a Video with id
+exports.delete = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Video.delete not Implemented", token);
+  }
+};
+
+// Delete all Videos
+exports.deleteAll = (req, res) => {
+  const token = checkLogin(req, res);
+  if(token){
+    return sendError(res, 501, -1, "Video.deleteAll not Implemented", token);
+  }
+};
diff --git a/backend/app/jwtRS256.key.pub b/backend/app/jwtRS256.key.pub
new file mode 100644
index 0000000..9b3b9a9
--- /dev/null
+++ b/backend/app/jwtRS256.key.pub
@@ -0,0 +1,14 @@
+-----BEGIN PUBLIC KEY-----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+-----END PUBLIC KEY-----
diff --git a/backend/app/jwtRS256.sh b/backend/app/jwtRS256.sh
new file mode 100644
index 0000000..d410256
--- /dev/null
+++ b/backend/app/jwtRS256.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+ssh-keygen -t rsa -b 4096 -m PEM -f jwtRS256.key -q -N ""
+openssl rsa -in jwtRS256.key -pubout -outform PEM -out jwtRS256.key.pub
+rm .env
+echo "JWTRS256_PRIVATE_KEY='`cat ./jwtRS256.key | base64 -w 0`'" >> .env
+echo "JWTRS256_PUBLIC_KEY='`cat ./jwtRS256.key.pub | base64 -w 0`'" >> .env
+source .env
+rm jwtRS256.key
diff --git a/backend/app/models/ad.model.js b/backend/app/models/ad.model.js
new file mode 100644
index 0000000..85404bc
--- /dev/null
+++ b/backend/app/models/ad.model.js
@@ -0,0 +1,18 @@
+module.exports = mongoose => {
+  let schema = mongoose.Schema({
+      images: [],
+      text: String,
+      subjectTarget: [],
+      seen: Number
+    },
+    { timestamps: true }
+  );
+
+  schema.method("toJSON", function() {
+    const { __v, _id, ...object } = this.toObject();
+    object.id = _id;
+    return object;
+  });
+
+  return mongoose.model("ad", schema);
+};
diff --git a/backend/app/models/image.model.js b/backend/app/models/image.model.js
new file mode 100644
index 0000000..c966167
--- /dev/null
+++ b/backend/app/models/image.model.js
@@ -0,0 +1,18 @@
+module.exports = mongoose => {
+  let schema = mongoose.Schema({
+      base64: String,
+      fromUrl: String,
+      description: String,
+      type: Number
+    },
+    { timestamps: true }
+  );
+
+  schema.method("toJSON", function() {
+    const { __v, _id, ...object } = this.toObject();
+    object.id = _id;
+    return object;
+  });
+
+  return mongoose.model("image", schema);
+};
diff --git a/backend/app/models/mongodb.model.js b/backend/app/models/mongodb.model.js
new file mode 100644
index 0000000..1fb040b
--- /dev/null
+++ b/backend/app/models/mongodb.model.js
@@ -0,0 +1,15 @@
+const dbConfig = require("../config/mongodb.config");
+
+const mongoose = require("mongoose");
+mongoose.Promise = global.Promise;
+
+const db = {};
+db.mongoose = mongoose;
+db.url = dbConfig.url;
+db.users = require("./user.model")(mongoose);
+db.playlists = require("./playlist.model")(mongoose);
+db.videos = require("./video.model")(mongoose);
+db.ads = require("./ad.model")(mongoose);
+db.images = require("./image.model")(mongoose);
+
+module.exports = db;
diff --git a/backend/app/models/playlist.model.js b/backend/app/models/playlist.model.js
new file mode 100644
index 0000000..2d7af15
--- /dev/null
+++ b/backend/app/models/playlist.model.js
@@ -0,0 +1,16 @@
+module.exports = mongoose => {
+  let schema = mongoose.Schema({
+      name: String,
+      videos: []
+    },
+    { timestamps: true }
+  );
+
+  schema.method("toJSON", function() {
+    const { __v, _id, ...object } = this.toObject();
+    object.id = _id;
+    return object;
+  });
+
+  return mongoose.model("playlist", schema);
+};
diff --git a/backend/app/models/subjectTarget.model.js b/backend/app/models/subjectTarget.model.js
new file mode 100644
index 0000000..cded850
--- /dev/null
+++ b/backend/app/models/subjectTarget.model.js
@@ -0,0 +1,16 @@
+module.exports = mongoose => {
+  let schema = mongoose.Schema({
+      name: String,
+      keywords: []
+    },
+    { timestamps: true }
+  );
+
+  schema.method("toJSON", function() {
+    const { __v, _id, ...object } = this.toObject();
+    object.id = _id;
+    return object;
+  });
+
+  return mongoose.model("subjectTarget", schema);
+};
diff --git a/backend/app/models/user.model.js b/backend/app/models/user.model.js
new file mode 100644
index 0000000..071c84e
--- /dev/null
+++ b/backend/app/models/user.model.js
@@ -0,0 +1,24 @@
+const roles = require("../config/role.config");
+
+module.exports = mongoose => {
+  let schema = mongoose.Schema({
+      login: String,
+      hashPass: String,     // WARNING: We don't want to send back the hashPass
+      mail: String,
+      role: {
+        type: Number,
+        default: roles.User
+      },
+      playlists: []
+    },
+    { timestamps: true }
+  );
+
+  schema.method("toJSON", function() {
+    const { __v, _id, ...object } = this.toObject();
+    object.id = _id;
+    return object;
+  });
+
+  return mongoose.model("user", schema);
+};
diff --git a/backend/app/models/video.model.js b/backend/app/models/video.model.js
new file mode 100644
index 0000000..ce2769e
--- /dev/null
+++ b/backend/app/models/video.model.js
@@ -0,0 +1,18 @@
+module.exports = mongoose => {
+  let schema = mongoose.Schema({
+      url: String,
+      title: String,
+      description: String,
+      views: Number
+    },
+    { timestamps: true }
+  );
+
+  schema.method("toJSON", function() {
+    const { __v, _id, ...object } = this.toObject();
+    object.id = _id;
+    return object;
+  });
+
+  return mongoose.model("video", schema);
+};
diff --git a/backend/app/routes/ad.routes.js b/backend/app/routes/ad.routes.js
new file mode 100644
index 0000000..943dcc7
--- /dev/null
+++ b/backend/app/routes/ad.routes.js
@@ -0,0 +1,24 @@
+const ads = require("../controllers/ad.controller");
+module.exports = app => {
+  let router = require("express").Router();
+
+  // Create a new Ad
+  router.post("/user/ad", ads.create);
+
+  // Retrieve all Ads
+  router.get("/user/ad", ads.findAll);
+
+  // Retrieve a single Ad with id
+  router.get("/user/ad/:id", ads.findOne);
+
+  // Update an Ad with id
+  router.put("/user/ad/:id", ads.update);
+
+  // Delete an Ad with id
+  router.delete("/user/ad/:id", ads.delete);
+
+  // Delete all Ads
+  router.delete("/user/ad", ads.deleteAll);
+
+  app.use('/api', router);
+};
diff --git a/backend/app/routes/playlist.routes.js b/backend/app/routes/playlist.routes.js
new file mode 100644
index 0000000..1d8241a
--- /dev/null
+++ b/backend/app/routes/playlist.routes.js
@@ -0,0 +1,24 @@
+const playlists = require("../controllers/playlist.controller");
+module.exports = app => {
+  let router = require("express").Router();
+
+  // Create a new Playlist
+  router.post("/user/playlist", playlists.create);
+
+  // Retrieve all Playlists
+  router.get("/user/playlists", playlists.findAll);
+
+  // Retrieve a single Playlist with id
+  router.get("/user/playlist/:id", playlists.findOne);
+
+  // Update a Playlist with id
+  router.put("/user/playlist/:id", playlists.update);
+
+  // Delete a Playlist with id
+  router.delete("/user/playlist/:id", playlists.delete);
+
+  // Delete all Playlists
+  router.delete("/user/playlists", playlists.deleteAll);
+
+  app.use('/api', router);
+};
diff --git a/backend/app/routes/user.routes.js b/backend/app/routes/user.routes.js
new file mode 100644
index 0000000..5e30e34
--- /dev/null
+++ b/backend/app/routes/user.routes.js
@@ -0,0 +1,30 @@
+const users = require("../controllers/user.controller");
+module.exports = app => {
+  let router = require("express").Router();
+
+  // Create a new User
+  router.post("/user", users.create);
+
+  // Retrieve all Users
+  router.get("/users", users.findAll);
+
+  // Retrieve a single User with id
+  router.get("/user/:id", users.findOne);
+
+  // Update a User with id
+  router.put("/user/:id", users.update);
+
+  // Delete a User with id
+  router.delete("/user/:id", users.delete);
+
+  // Delete all Users
+  router.delete("/users", users.deleteAll);
+
+  // Authenticate a User
+  router.post("/user/auth", users.auth);
+
+  // Logout a User
+  router.delete("/user/logout", users.disconnect);
+
+  app.use('/api', router);
+};
diff --git a/backend/app/routes/video.routes.js b/backend/app/routes/video.routes.js
new file mode 100644
index 0000000..42af7f4
--- /dev/null
+++ b/backend/app/routes/video.routes.js
@@ -0,0 +1,27 @@
+const videos = require("../controllers/video.controller");
+module.exports = app => {
+  let router = require("express").Router();
+
+  // Search Video
+  router.post("/videos", videos.search);
+
+  // Create a new Video
+  router.post("/video", videos.create);
+
+  // Retrieve all Videos
+  router.get("/videos", videos.findAll);
+
+  // Retrieve a single Video with id
+  router.get("/video/:id", videos.findOne);
+
+  // Update a Video with id
+  router.put("/video/:id", videos.update);
+
+  // Delete a Video with id
+  router.delete("/video/:id", videos.delete);
+
+  // Delete all Videos
+  router.delete("/videos", videos.deleteAll);
+
+  app.use('/api', router);
+};
diff --git a/backend/config.js b/backend/config.js
deleted file mode 100644
index a200720..0000000
--- a/backend/config.js
+++ /dev/null
@@ -1,13 +0,0 @@
-const config = {
-  // paramètres de connexion à la base de données
-  mongodbDatabase: 'polynotfound',
-  mongodbHost:     'mongodb://mongodb:27017/',
-  // mongodbHost:     'mongodb://127.0.0.1:27017/',
-  charset:       'utf8',
-  mongodbLogin:  '',
-  mongodbPassword: '',
-
-  // les noms des tables
-  mongodbUtilisateurs: 'users'
-};
-module.exports = config;
diff --git a/backend/keys/jwtRS256.sh b/backend/keys/jwtRS256.sh
deleted file mode 100644
index 5e1fe1e..0000000
--- a/backend/keys/jwtRS256.sh
+++ /dev/null
@@ -1,5 +0,0 @@
-ssh-keygen -t rsa -b 4096 -m PEM -f jwtRS256.key
-# Don't add passphrase
-openssl rsa -in jwtRS256.key -pubout -outform PEM -out jwtRS256.key.pub
-cat jwtRS256.key
-cat jwtRS256.key.pub
diff --git a/backend/mongodbConnect.js b/backend/mongodbConnect.js
deleted file mode 100644
index b823b9f..0000000
--- a/backend/mongodbConnect.js
+++ /dev/null
@@ -1,20 +0,0 @@
-const config = require('./config');
-const MongoClient = require( 'mongodb' ).MongoClient;
-const uri = config.mongodbHost;
-let db;
-
-module.exports = {
-  connectToServer: function( callback ) {
-    MongoClient.connect( uri,  { useNewUrlParser: true,  useUnifiedTopology: true }, function( err, client ) {
-      if(err) throw err;
-      console.log('mongodb-checkConnection'+client===undefined);
-      if (client !== undefined) console.log(client.isConnected());
-      db  = client.db(config.mongodbDatabase);
-      return callback( err );
-    });
-  },
-
-  getDB: function() {
-    return db;
-  }
-};
diff --git a/backend/mongodbQueries b/backend/mongodbQueries
deleted file mode 100644
index 00a2e5f..0000000
--- a/backend/mongodbQueries
+++ /dev/null
@@ -1,62 +0,0 @@
-const config = require('./config');
-const mongoDB = require ('./mongodbConnect').getDB();
-
-function checkLoginQuery(login, password){
-  // SELECT idUtilisateurs
-  // FROM utilisateurs
-  // WHERE login = ? AND password = ?;
-  return new Promise((resolve, reject) => {
-    resolve(mongoDB.collection(config.mongodbUtilisateurs).find(
-      {login: login, password: password},
-      {projection: {_id: 1}}).count());
-  });
-}
-module.exports.checkLoginQuery = checkLoginQuery;
-
-function register(login, password){
-  // INSERT INTO users(login, password)
-  return new Promise((resolve, reject) => {
-    mongoDB.collection(config.mongodbUtilisateurs).updateOne(
-      {'login': login},
-      {$setOnInsert: { 'login': login, 'password': password}},
-      {upsert:true},function(err,res){
-        //console.log(res);
-        if(res !== undefined){
-          if(typeof res.upsertedId !== 'undefined'){
-            resolve(res.upsertedId);
-          }else{
-            resolve(false);
-          }
-        }
-      });
-  });
-}
-module.exports.register = register;
-
-function getUsersQuery(username){
-  return new Promise((resolve, reject) => {
-    mongoDB.collection(config.mongodbUtilisateurs).find(
-      { $and: [{'login': {$ne: 'Server'}}, {'login': {$ne: username}}]},
-      {projection: {_id: 0, password: 0}}
-    ).toArray(function (err, result){
-      if(err) throw err;
-      resolve(result);
-    });
-  });
-}
-module.exports.getUsersQuery = getUsersQuery
-
-function changePasswordQuery(login, password, newPassword){
-  return new Promise((resolve, reject) => {
-    mongoDB.collection(config.mongodbUtilisateurs).findOneAndUpdate(
-      {'login': login, 'password': password},
-      {$set: { 'login': login, 'password': newPassword}}
-      ,function(err,res){
-        if(res !== undefined){
-          console.log(res);
-          resolve(res.lastErrorObject.n === 1);
-        }
-      });
-  });
-}
-module.exports.changePasswordQuery = changePasswordQuery;
diff --git a/backend/package-lock.json b/backend/package-lock.json
index 14a0486..502d629 100644
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -4,6 +4,25 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@types/node": {
+      "version": "16.11.6",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-16.11.6.tgz",
+      "integrity": "sha512-ua7PgUoeQFjmWPcoo9khiPum3Pd60k4/2ZGXt18sm2Slk0W0xZTqt5Y0Ny1NyBiN1EVQ/+FaF9NcY4Qe6rwk5w=="
+    },
+    "@types/webidl-conversions": {
+      "version": "6.1.1",
+      "resolved": "https://registry.npmjs.org/@types/webidl-conversions/-/webidl-conversions-6.1.1.tgz",
+      "integrity": "sha512-XAahCdThVuCFDQLT7R7Pk/vqeObFNL3YqRyFZg+AqAP/W1/w3xHaIxuW7WszQqTbIBOPRcItYJIou3i/mppu3Q=="
+    },
+    "@types/whatwg-url": {
+      "version": "8.2.1",
+      "resolved": "https://registry.npmjs.org/@types/whatwg-url/-/whatwg-url-8.2.1.tgz",
+      "integrity": "sha512-2YubE1sjj5ifxievI5Ge1sckb9k/Er66HyR2c+3+I6VDUUg1TLPdYYTEbQ+DjRkS4nTxMJhgWfSfMRD2sl2EYQ==",
+      "requires": {
+        "@types/node": "*",
+        "@types/webidl-conversions": "*"
+      }
+    },
     "accepts": {
       "version": "1.3.7",
       "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz",
@@ -18,14 +37,10 @@
       "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
       "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
     },
-    "bl": {
-      "version": "2.2.1",
-      "resolved": "https://registry.npmjs.org/bl/-/bl-2.2.1.tgz",
-      "integrity": "sha512-6Pesp1w0DEX1N550i/uGV/TqucVL4AM/pgThFSN/Qq9si1/DF9aIHs1BxD8V/QU0HoeHO6cQRTAuYnLPKq1e4g==",
-      "requires": {
-        "readable-stream": "^2.3.5",
-        "safe-buffer": "^5.1.1"
-      }
+    "base64-js": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.5.1.tgz",
+      "integrity": "sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA=="
     },
     "body-parser": {
       "version": "1.19.0",
@@ -42,12 +57,39 @@
         "qs": "6.7.0",
         "raw-body": "2.4.0",
         "type-is": "~1.6.17"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "2.6.9",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
+          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
+          "requires": {
+            "ms": "2.0.0"
+          }
+        },
+        "ms": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
+          "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
+        }
       }
     },
     "bson": {
-      "version": "1.1.6",
-      "resolved": "https://registry.npmjs.org/bson/-/bson-1.1.6.tgz",
-      "integrity": "sha512-EvVNVeGo4tHxwi8L6bPj3y3itEvStdwvvlojVxxbyYfoaxJ6keLgrTuKdyfEAszFK+H3olzBuafE0yoh0D1gdg=="
+      "version": "4.5.3",
+      "resolved": "https://registry.npmjs.org/bson/-/bson-4.5.3.tgz",
+      "integrity": "sha512-qVX7LX79Mtj7B3NPLzCfBiCP6RAsjiV8N63DjlaVVpZW+PFoDTxQ4SeDbSpcqgE6mXksM5CAwZnXxxxn/XwC0g==",
+      "requires": {
+        "buffer": "^5.6.0"
+      }
+    },
+    "buffer": {
+      "version": "5.7.1",
+      "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.7.1.tgz",
+      "integrity": "sha512-EHcyIPBQ4BSGlvjB16k5KgAJ27CIsHY/2JBmCRReo48y9rQ3MaUzWX3KVlBa4U7MyX02HdVj0K7C3WaB3ju7FQ==",
+      "requires": {
+        "base64-js": "^1.3.1",
+        "ieee754": "^1.1.13"
+      }
     },
     "buffer-equal-constant-time": {
       "version": "1.0.1",
@@ -91,11 +133,6 @@
       "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
       "integrity": "sha1-4wOogrNCzD7oylE6eZmXNNqzriw="
     },
-    "core-util-is": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.3.tgz",
-      "integrity": "sha512-ZQBvi1DcpJ4GDqanjucZ2Hj3wEO5pZDS89BWbkcrvdxksJorwUDDZamX9ldFkp9aw2lmBDLgkObEA4DWNJ9FYQ=="
-    },
     "cors": {
       "version": "2.8.5",
       "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
@@ -106,17 +143,17 @@
       }
     },
     "debug": {
-      "version": "2.6.9",
-      "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
-      "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
+      "version": "4.3.2",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.2.tgz",
+      "integrity": "sha512-mOp8wKcvj7XxC78zLgw/ZA+6TSgkoE2C/ienthhRD298T7UNwAg9diBpLRxC0mOezLl4B0xV7M0cCO6P/O0Xhw==",
       "requires": {
-        "ms": "2.0.0"
+        "ms": "2.1.2"
       }
     },
     "denque": {
-      "version": "1.5.1",
-      "resolved": "https://registry.npmjs.org/denque/-/denque-1.5.1.tgz",
-      "integrity": "sha512-XwE+iZ4D6ZUB7mfYRMb5wByE8L74HCn30FBN7sWnXksWc1LO1bPDl67pBR9o/kC4z/xSNAwkMYcGgqDV3BE3Hw=="
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/denque/-/denque-2.0.1.tgz",
+      "integrity": "sha512-tfiWc6BQLXNLpNiR5iGd0Ocu3P3VpxfzFiqubLgMfhfOw9WyvgJBd46CClNn9k3qfbjvT//0cf7AlYRX/OslMQ=="
     },
     "depd": {
       "version": "1.1.2",
@@ -128,6 +165,11 @@
       "resolved": "https://registry.npmjs.org/destroy/-/destroy-1.0.4.tgz",
       "integrity": "sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA="
     },
+    "dotenv": {
+      "version": "10.0.0",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-10.0.0.tgz",
+      "integrity": "sha512-rlBi9d8jpv9Sf1klPjNfFAuWDjKLwTIJJ/VxtoTwIR6hnZxcEOQCZg2oIL3MWBYw5GpUDKOEnND7LXTbIpQ03Q=="
+    },
     "ecdsa-sig-formatter": {
       "version": "1.0.11",
       "resolved": "https://registry.npmjs.org/ecdsa-sig-formatter/-/ecdsa-sig-formatter-1.0.11.tgz",
@@ -191,6 +233,21 @@
         "type-is": "~1.6.18",
         "utils-merge": "1.0.1",
         "vary": "~1.1.2"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "2.6.9",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
+          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
+          "requires": {
+            "ms": "2.0.0"
+          }
+        },
+        "ms": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
+          "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
+        }
       }
     },
     "finalhandler": {
@@ -205,6 +262,21 @@
         "parseurl": "~1.3.3",
         "statuses": "~1.5.0",
         "unpipe": "~1.0.0"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "2.6.9",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
+          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
+          "requires": {
+            "ms": "2.0.0"
+          }
+        },
+        "ms": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
+          "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
+        }
       }
     },
     "forwarded": {
@@ -237,6 +309,11 @@
         "safer-buffer": ">= 2.1.2 < 3"
       }
     },
+    "ieee754": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.2.1.tgz",
+      "integrity": "sha512-dcyqhDvX1C46lXZcVqCpK+FtMRQVdIMN6/Df5js2zouUsqG7I6sFxitIC+7KYK29KdXOLHdu9zL4sFnoVQnqaA=="
+    },
     "inherits": {
       "version": "2.0.3",
       "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
@@ -247,11 +324,6 @@
       "resolved": "https://registry.npmjs.org/ipaddr.js/-/ipaddr.js-1.9.1.tgz",
       "integrity": "sha512-0KI/607xoxSToH7GjN1FfSbLoU0+btTicjsQSWQlh/hZykN8KpmMf7uYwPW3R+akZ6R/w18ZlXSHBYXiYUPO3g=="
     },
-    "isarray": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
-      "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE="
-    },
     "jsonwebtoken": {
       "version": "8.5.1",
       "resolved": "https://registry.npmjs.org/jsonwebtoken/-/jsonwebtoken-8.5.1.tgz",
@@ -267,13 +339,6 @@
         "lodash.once": "^4.0.0",
         "ms": "^2.1.1",
         "semver": "^5.6.0"
-      },
-      "dependencies": {
-        "ms": {
-          "version": "2.1.3",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
-          "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="
-        }
       }
     },
     "jwa": {
@@ -295,6 +360,11 @@
         "safe-buffer": "^5.0.1"
       }
     },
+    "kareem": {
+      "version": "2.3.2",
+      "resolved": "https://registry.npmjs.org/kareem/-/kareem-2.3.2.tgz",
+      "integrity": "sha512-STHz9P7X2L4Kwn72fA4rGyqyXdmrMSdxqHx9IXon/FXluXieaFA6KJ2upcHAHxQPQ0LeM/OjLrhFxifHewOALQ=="
+    },
     "lodash.includes": {
       "version": "4.3.0",
       "resolved": "https://registry.npmjs.org/lodash.includes/-/lodash.includes-4.3.0.tgz",
@@ -370,22 +440,60 @@
       }
     },
     "mongodb": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-3.7.2.tgz",
-      "integrity": "sha512-/Qi0LmOjzIoV66Y2JQkqmIIfFOy7ZKsXnQNlUXPFXChOw3FCdNqVD5zvci9ybm6pkMe/Nw+Rz9I0Zsk2a+05iQ==",
+      "version": "4.1.3",
+      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-4.1.3.tgz",
+      "integrity": "sha512-lHvTqODBiSpuqjpCj48DOyYWS6Iq6ElJNUiH9HWdQtONyOfjgsKzJULipWduMGsSzaNO4nFi/kmlMFCLvjox/Q==",
       "requires": {
-        "bl": "^2.2.1",
-        "bson": "^1.1.4",
-        "denque": "^1.4.1",
-        "optional-require": "^1.1.8",
-        "safe-buffer": "^5.1.2",
-        "saslprep": "^1.0.0"
+        "bson": "^4.5.2",
+        "denque": "^2.0.1",
+        "mongodb-connection-string-url": "^2.0.0",
+        "saslprep": "^1.0.3"
+      }
+    },
+    "mongodb-connection-string-url": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/mongodb-connection-string-url/-/mongodb-connection-string-url-2.1.0.tgz",
+      "integrity": "sha512-Qf9Zw7KGiRljWvMrrUFDdVqo46KIEiDuCzvEN97rh/PcKzk2bd6n9KuzEwBwW9xo5glwx69y1mI6s+jFUD/aIQ==",
+      "requires": {
+        "@types/whatwg-url": "^8.2.1",
+        "whatwg-url": "^9.1.0"
+      }
+    },
+    "mongoose": {
+      "version": "6.0.12",
+      "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-6.0.12.tgz",
+      "integrity": "sha512-BvsZk7zEEhb1AgQFLtxN9C+7qgy5edRuA3ZDDwHU+kHG/HM44vI6FdKV5m6HVdAUeCHHQTiVv+YQh8BRsToSHw==",
+      "requires": {
+        "bson": "^4.2.2",
+        "kareem": "2.3.2",
+        "mongodb": "4.1.3",
+        "mpath": "0.8.4",
+        "mquery": "4.0.0",
+        "ms": "2.1.2",
+        "regexp-clone": "1.0.0",
+        "sift": "13.5.2",
+        "sliced": "1.0.1"
+      }
+    },
+    "mpath": {
+      "version": "0.8.4",
+      "resolved": "https://registry.npmjs.org/mpath/-/mpath-0.8.4.tgz",
+      "integrity": "sha512-DTxNZomBcTWlrMW76jy1wvV37X/cNNxPW1y2Jzd4DZkAaC5ZGsm8bfGfNOthcDuRJujXLqiuS6o3Tpy0JEoh7g=="
+    },
+    "mquery": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/mquery/-/mquery-4.0.0.tgz",
+      "integrity": "sha512-nGjm89lHja+T/b8cybAby6H0YgA4qYC/lx6UlwvHGqvTq8bDaNeCwl1sY8uRELrNbVWJzIihxVd+vphGGn1vBw==",
+      "requires": {
+        "debug": "4.x",
+        "regexp-clone": "^1.0.0",
+        "sliced": "1.0.1"
       }
     },
     "ms": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
-      "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
     },
     "negotiator": {
       "version": "0.6.2",
@@ -405,14 +513,6 @@
         "ee-first": "1.1.1"
       }
     },
-    "optional-require": {
-      "version": "1.1.8",
-      "resolved": "https://registry.npmjs.org/optional-require/-/optional-require-1.1.8.tgz",
-      "integrity": "sha512-jq83qaUb0wNg9Krv1c5OQ+58EK+vHde6aBPzLvPPqJm89UQWsvSuFy9X/OSNJnFeSOKo7btE0n8Nl2+nE+z5nA==",
-      "requires": {
-        "require-at": "^1.0.6"
-      }
-    },
     "parseurl": {
       "version": "1.3.3",
       "resolved": "https://registry.npmjs.org/parseurl/-/parseurl-1.3.3.tgz",
@@ -423,11 +523,6 @@
       "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-0.1.7.tgz",
       "integrity": "sha1-32BBeABfUi8V60SQ5yR6G/qmf4w="
     },
-    "process-nextick-args": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-2.0.1.tgz",
-      "integrity": "sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag=="
-    },
     "proxy-addr": {
       "version": "2.0.7",
       "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.7.tgz",
@@ -437,6 +532,11 @@
         "ipaddr.js": "1.9.1"
       }
     },
+    "punycode": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.1.1.tgz",
+      "integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A=="
+    },
     "qs": {
       "version": "6.7.0",
       "resolved": "https://registry.npmjs.org/qs/-/qs-6.7.0.tgz",
@@ -458,24 +558,10 @@
         "unpipe": "1.0.0"
       }
     },
-    "readable-stream": {
-      "version": "2.3.7",
-      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.7.tgz",
-      "integrity": "sha512-Ebho8K4jIbHAxnuxi7o42OrZgF/ZTNcsZj6nRKyUmkhLFq8CHItp/fy6hQZuZmP/n3yZ9VBUbp4zz/mX8hmYPw==",
-      "requires": {
-        "core-util-is": "~1.0.0",
-        "inherits": "~2.0.3",
-        "isarray": "~1.0.0",
-        "process-nextick-args": "~2.0.0",
-        "safe-buffer": "~5.1.1",
-        "string_decoder": "~1.1.1",
-        "util-deprecate": "~1.0.1"
-      }
-    },
-    "require-at": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/require-at/-/require-at-1.0.6.tgz",
-      "integrity": "sha512-7i1auJbMUrXEAZCOQ0VNJgmcT2VOKPRl2YGJwgpHpC9CE91Mv4/4UYIUm4chGJaI381ZDq1JUicFii64Hapd8g=="
+    "regexp-clone": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/regexp-clone/-/regexp-clone-1.0.0.tgz",
+      "integrity": "sha512-TuAasHQNamyyJ2hb97IuBEif4qBHGjPHBS64sZwytpLEqtBQ1gPJTnOaQ6qmpET16cK14kkjbazl6+p0RRv0yw=="
     },
     "safe-buffer": {
       "version": "5.1.2",
@@ -521,6 +607,21 @@
         "statuses": "~1.5.0"
       },
       "dependencies": {
+        "debug": {
+          "version": "2.6.9",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
+          "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
+          "requires": {
+            "ms": "2.0.0"
+          },
+          "dependencies": {
+            "ms": {
+              "version": "2.0.0",
+              "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
+              "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
+            }
+          }
+        },
         "ms": {
           "version": "2.1.1",
           "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
@@ -544,6 +645,16 @@
       "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.1.tgz",
       "integrity": "sha512-JvdAWfbXeIGaZ9cILp38HntZSFSo3mWg6xGcJJsd+d4aRMOqauag1C63dJfDw7OaMYwEbHMOxEZ1lqVRYP2OAw=="
     },
+    "sift": {
+      "version": "13.5.2",
+      "resolved": "https://registry.npmjs.org/sift/-/sift-13.5.2.tgz",
+      "integrity": "sha512-+gxdEOMA2J+AI+fVsCqeNn7Tgx3M9ZN9jdi95939l1IJ8cZsqS8sqpJyOkic2SJk+1+98Uwryt/gL6XDaV+UZA=="
+    },
+    "sliced": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/sliced/-/sliced-1.0.1.tgz",
+      "integrity": "sha1-CzpmK10Ewxd7GSa+qCsD+Dei70E="
+    },
     "sparse-bitfield": {
       "version": "3.0.3",
       "resolved": "https://registry.npmjs.org/sparse-bitfield/-/sparse-bitfield-3.0.3.tgz",
@@ -558,19 +669,19 @@
       "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.5.0.tgz",
       "integrity": "sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow="
     },
-    "string_decoder": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
-      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
-      "requires": {
-        "safe-buffer": "~5.1.0"
-      }
-    },
     "toidentifier": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.0.tgz",
       "integrity": "sha512-yaOH/Pk/VEhBWWTlhI+qXxDFXlejDGcQipMlyxda9nthulaxLZUNcUqFxokp0vcYnvteJln5FNQDRrxj3YcbVw=="
     },
+    "tr46": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-2.1.0.tgz",
+      "integrity": "sha512-15Ih7phfcdP5YxqiB+iDtLoaTz4Nd35+IiAv0kQ5FNKHzXgdWqPoTIqEDDJmXceQt4JZk6lVPT8lnDlPpGDppw==",
+      "requires": {
+        "punycode": "^2.1.1"
+      }
+    },
     "type-is": {
       "version": "1.6.18",
       "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.18.tgz",
@@ -585,11 +696,6 @@
       "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
       "integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw="
     },
-    "util-deprecate": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
-      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
-    },
     "utils-merge": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
@@ -599,6 +705,20 @@
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
       "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
+    },
+    "webidl-conversions": {
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-6.1.0.tgz",
+      "integrity": "sha512-qBIvFLGiBpLjfwmYAaHPXsn+ho5xZnGvyGvsarywGNc8VyQJUMHJ8OBKGGrPER0okBeMDaan4mNBlgBROxuI8w=="
+    },
+    "whatwg-url": {
+      "version": "9.1.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-9.1.0.tgz",
+      "integrity": "sha512-CQ0UcrPHyomtlOCot1TL77WyMIm/bCwrJ2D6AOKGwEczU9EpyoqAokfqrf/MioU9kHcMsmJZcg1egXix2KYEsA==",
+      "requires": {
+        "tr46": "^2.1.0",
+        "webidl-conversions": "^6.1.0"
+      }
     }
   }
 }
diff --git a/backend/package.json b/backend/package.json
index 7d2fdf0..15a6c33 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -12,8 +12,10 @@
     "body-parser": "^1.19.0",
     "cookie-parser": "^1.4.5",
     "cors": "^2.8.5",
+    "dotenv": "^10.0.0",
     "express": "^4.17.1",
     "jsonwebtoken": "^8.5.1",
-    "mongodb": "^3.6.9"
-  }
+    "mongoose": "^6.0.12"
+  },
+  "devDependencies": {}
 }
diff --git a/backend/server.js b/backend/server.js
index 4a3868a..de1b5f4 100644
--- a/backend/server.js
+++ b/backend/server.js
@@ -12,7 +12,25 @@ app.use(bodyParser.json());
 const cors = require('cors');
 app.use(cors({origin: 'http://localhost:4200', credentials: true}));
 
+const db = require("./app/models/mongodb.model");
+db.mongoose
+  .connect(db.url, {
+    useNewUrlParser: true,
+    useUnifiedTopology: true
+  }, function (err){
+    if(err){
+      console.log("Cannot connect to the database!", err);
+      process.exit();
+    } else{
+      console.log("Connected to the database!", db.url);
+    }
+  });
+
+require("./app/routes/user.routes")(app);
+require("./app/routes/playlist.routes")(app);
+require("./app/routes/video.routes")(app);
+require("./app/routes/ad.routes")(app);
+
 app.listen(port, '0.0.0.0',() => {
   console.log (`listening on port ${port}`);
 });
-
diff --git a/docker-compose.yml b/docker-compose.yml
index f5fded0..15b85cd 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -6,7 +6,7 @@ services:
     build: .
     command: ng serve --host 0.0.0.0
     volumes:
-      - ./frontend:/data/frontend/
+      - ./src:/data/frontend/
       - ./node_modules:/data/frontend/node_modules
     ports:
       - 4200:4200