reconstruire UC inceput

2024-04-03 04:07:20 +03:00
parent af8c295d75
commit 5e4a488bfd
36 changed files with 264 additions and 943 deletions
@@ -0,0 +1,45 @@
+General Overview
+-
+
+The UC serves as the main logistic station for all the client/CEO applications which are used
+inside the corporation. This UC stores
+- credentials for the users and ceo;
+- registered departments, as well security levels and the encrypting/decrypting keys for the files;
+- backup schemes for each user, as well as the IP, as well as the IPs where each computer is located;
+
+The main endpoints of the application are:
+
+- <b>Users</b>:
+
+   - Can register/login in the system;
+   - Update the information (username, email, password);
+   - Change the working department (the client app will prompt the CEO password request to proceed);
+   - Retrieve the full list of departments for the sign-up / 'change department' procedure;
+   - Retrieve the full list of users and their IPs for sharing a file
+
+
+- <b>CEO</b>:
+
+   - Can log in the system;
+   - Can change the email (the password can only be retrieved by the admin);
+   - Delete users from the system;
+   - Create / Delete departments, as well as managing the security levels of each department;
+   - Retrieve the full list of users and their IPs for sharing a file
+
+
+- <b>Admin</b>:
+
+    - Reset the server to default state;
+    - Retrieve the CEO login information, as well as a list of all users in the system;
+
+
+- <b>Backup Schemes</b>:
+
+  - At a request, will get the ID of a user, their IP and the backup directory structure to place it in the scheme,
+  as well as the data size of the backup
+  
+
+Other Features
+-
+The UC will also create a separate process which at a set interval of time will retrieve from the admin config, as
+well as from the CEO config, the ID so that it will be used to authenticate the users at their endpoints.
@@ -8,23 +8,21 @@ const port = process.env.PORT || 5000;
 app.use(cors());
 app.use(json());

-app.locals.apiKey = 'uc_api'
-
 const checkJson = require('./middlewares/checkJson');
 const apiKeyValidation = require('./middlewares/apiKeyValidation');
-const setAdminValues = require('./middlewares/setAdminValues');

 app.use(apiKeyValidation)
 app.use(checkJson)
-app.use(setAdminValues);

 const usersRouter = require('./routes/users');
-const departmentsRouter = require('./routes/departments');
 const adminRouter = require('./routes/admin');
+const ceoRouter = require('./routes/ceo');
+const backupSchemesRouter = require('./routes/backup_schemes');

 app.use('/users', usersRouter);
-app.use('/departments', departmentsRouter);
 app.use('/admin', adminRouter);
+app.use('/ceo', ceoRouter);
+app.use('/backup_schemes', backupSchemesRouter);

 app.listen(port, () => {
    console.log(`Server running on http://localhost:${port}`);
@@ -32,8 +30,7 @@ app.listen(port, () => {

 // Graceful shutdown function
 function gracefulShutdown() {
-    console.log('\nGracefully shutting down from SIGINT (Ctrl-C)');
-
+    console.log('\nShutting down!');
    process.exit(0);
 }

@@ -1 +0,0 @@
-{}
@@ -1,4 +0,0 @@
-{
-  "adminKey": "9ded8e96a7a03fb7ce23a19b4f6a3d08ac42926aa96664af941e4d02e0b93f0d",
-  "ceoID": "a7635c7a-d6a0-43dc-8e24-552ab33239b8"
-}
@@ -1,12 +0,0 @@
-[
-  {
-    "id": "16183532-3090-4e24-8def-aa29f316c1c5",
-    "name": "Programatori",
-    "key": "66238d3abd92e43486a1f8526ff83646a2481b4fb669667daf81ecc71e8211e3"
-  },
-  {
-    "id": "897b883b-7638-452e-bed9-81e8da2ec0c3",
-    "name": "Contabili",
-    "key": "55956d2a1cad9e3952f3756ded721724f71baada95c9addbf46f72defa06d354"
-  }
-]
@@ -1,5 +0,0 @@
-{
-  "1": "f1444987-c0c2-4ce8-89e3-b21f302bff7f",
-  "2": "16183532-3090-4e24-8def-aa29f316c1c5",
-  "3": "897b883b-7638-452e-bed9-81e8da2ec0c3"
-}
@@ -1,16 +0,0 @@
-[
-  {
-    "id": "a7635c7a-d6a0-43dc-8e24-552ab33239b8",
-    "name": "CEO",
-    "email": "ceo@yourfirm.com",
-    "password": "405ee6885be5385223830874bd6dcfca",
-    "department": ""
-  },
-  {
-    "id": "ffc90aca-bb31-4641-9a43-30b343924e8a",
-    "name": "Andrei",
-    "email": "a@c.com",
-    "password": "5447045dc3cfaafdb49b365e31dad41eb88616b0b1449930e55fd3a70bd8cee4",
-    "department": "16183532-3090-4e24-8def-aa29f316c1c5"
-  }
-]
@@ -1,8 +0,0 @@
-class DepartmentAlreadyExistsError extends Error {
-    constructor(message = 'This department is already in system') {
-        super(message);
-        this.name = 'DepartmentAlreadyExistsError';
-    }
-}
-
-module.exports = DepartmentAlreadyExistsError
@@ -1,8 +0,0 @@
-class DepartmentNotExistingError extends Error {
-    constructor(message = 'Department not found') {
-        super(message);
-        this.name = 'DepartmentNotExistingError';
-    }
-}
-
-module.exports = DepartmentNotExistingError;
@@ -1,8 +0,0 @@
-class EmailAlreadyInSystemError extends Error {
-    constructor(message = "Email is already in system!") {
-        super(message);
-        this.name = 'EmailAlreadyInSystem';
-    }
-}
-
-module.exports = EmailAlreadyInSystemError
@@ -1,8 +0,0 @@
-class ImproperDirStructureError extends Error {
-    constructor(message = 'the provided structure is not a valid JSON') {
-        super(message);
-        this.name = 'ImproperDirStructureError';
-    }
-}
-
-module.exports = ImproperDirStructureError
@@ -1,8 +0,0 @@
-class InvalidDepartmentJsonError extends Error {
-    constructor(message = 'Invalid JSON format for security levels') {
-        super(message);
-        this.name = 'InvalidDepartmentJsonError';
-    }
-}
-
-module.exports=InvalidDepartmentJsonError;
@@ -1,8 +0,0 @@
-class InvalidKeyErrorException extends Error {
-    constructor(message = 'Invalid key for this operation') {
-        super(message);
-        this.name = 'InvalidKeyErrorException';
-    }
-}
-
-module.exports=InvalidKeyErrorException;
@@ -1,8 +0,0 @@
-class UserAlreadyExistsException extends Error {
-    constructor(message = 'User already exists in system') {
-        super(message);
-        this.name = 'UserAlreadyExistsException';
-    }
-}
-
-module.exports = UserAlreadyExistsException
@@ -1,8 +0,0 @@
-class UserNotExistingError extends Error {
-    constructor(message = 'User not found in the system!') {
-        super(message);
-        this.name = 'UserNotExistingError';
-    }
-}
-
-module.exports = UserNotExistingError
@@ -1,26 +0,0 @@
-const path = require("path");
-const fs = require("fs");
-
-function SetAdminValuesMiddleware(req, res, next){
-    try{
-        const configFilePath = path.join(__dirname, '..', 'db', 'config.json');
-        const config = JSON.parse(fs.readFileSync(configFilePath));
-
-        res.locals.adminKey = config.adminKey === undefined ? " " : config.adminKey;
-        res.locals.ceoID = config.ceoID === undefined ? " " : config.ceoID;
-
-        next();
-
-        fs.writeFileSync(configFilePath, JSON.stringify(
-            {
-                adminKey: res.locals.adminKey,
-                ceoID: res.locals.ceoID
-            }, null, 2));
-        return res;
-    } catch(error){
-        console.log(error.message);
-        return res;
-    }
-}
-
-module.exports = SetAdminValuesMiddleware;
@@ -1,153 +1,20 @@
 const express = require('express');
-const fs = require('fs');
-const crypto = require('crypto');
-const {v4: uuidv4} = require("uuid");
-const path = require("path");
-
-const { sendResponse } = require('../helpers/responseHelper');
-const {httpStatus, httpStatusMessages} = require('../helpers/httpResponses')
-const {schemas} = require("../models/schemaMapper");
-const InvalidKeyErrorException = require("../exceptions/invalidKeyErrorException");
-const UserNotExistingError = require("../exceptions/userNotExistingError");
-
 const router = express.Router();

-router.get('/reset_key', (req, res) => {
-
-    const adminKey= crypto.randomBytes(32).toString('hex');
-    res.locals.adminKey = adminKey;
-    sendResponse(res, httpStatus.OK, httpStatusMessages[httpStatus.OK], adminKey);
-});
-
-router.get('/reset', (req, res) => {
-    try {
-        const requestAdminKey = req.headers['admin-key'];
-
-        if (requestAdminKey !== res.locals.adminKey) {
-            throw new InvalidKeyErrorException();
-        }
-
-        fs.writeFileSync(path.join(__dirname, '..', 'db', 'users.json'), '[]');
-        fs.writeFileSync(path.join(__dirname, '..', 'db', 'departments.json'), '[]');
-        fs.writeFileSync(path.join(__dirname, '..', 'db', 'security_levels.json'), '{}');
-        fs.writeFileSync(path.join(__dirname, '..', 'db', 'backup_schemas.json'), '{}');
-        fs.writeFileSync(path.join(__dirname, '..', 'db', 'config.json'), JSON.stringify({
-            adminKey: ' ',
-            ceoID: ' '
-        }, null, 2));
-
-        const adminPassword = crypto.randomBytes(16).toString('hex'); // Generating random password
-        const ceoID = uuidv4();
-        res.locals.ceoID = ceoID;
-        const adminAccount = {
-            id: ceoID,
-            name: 'CEO',
-            email: 'ceo@yourfirm.com',
-            password: adminPassword
-        };
-
-        const usersData = [adminAccount];
-        fs.writeFileSync(path.join(__dirname, '..', 'db', 'users.json'),
-            JSON.stringify(usersData, null, 2));
-
-        sendResponse(res, httpStatus.CREATED, httpStatusMessages[httpStatus.CREATED]);
-    } catch (error) {
-        console.log(error.message);
-        if(error instanceof InvalidKeyErrorException){
-            return sendResponse(res, httpStatus.UNAUTHORIZED, error.message);
-        }
-
-        sendResponse(res, httpStatus.INTERNAL_SERVER_ERROR, httpStatusMessages[httpStatus.INTERNAL_SERVER_ERROR]);
-    }
-});
-
-const validateRegisterCeoBody = (req, res, next) => {
-    const { error, value } = schemas.ceoRegisterModelSchema.validate(req.body);
-    if (error) {
-        return sendResponse(res, httpStatus.BAD_REQUEST, error.details[0].message);
-    }
-    req.jsonModel = value;
+function validateBody(req, res, next) {
    next();
 }

-router.put('/change_admin_credentials', validateRegisterCeoBody, (req, res) => {
-    try {
-        const requestAdminKey = req.headers['admin-key'];
-        if (requestAdminKey !== res.locals.adminKey) {
-            throw new InvalidKeyErrorException();
-        }
-
-        const usersFilePath = path.join(__dirname, '..', 'db', 'users.json');
-        const usersData = JSON.parse(fs.readFileSync(usersFilePath, 'utf8'));
-
-        const adminIndex = usersData.findIndex(user => user.id === res.locals.ceoID);
-        if (adminIndex === -1) {
-            throw new UserNotExistingError();
-        }
-
-        const { name, email } = req.body; // Using req.body instead of req.jsonModel
-        const newPassword = crypto.randomBytes(16).toString('hex'); // Generate new random password
-
-        // Update the user data
-        usersData[adminIndex] = {
-            id: res.locals.ceoID,
-            name: name,
-            email: email,
-            password: newPassword
-        };
-
-        // Write the updated user data back to the file
-        fs.writeFileSync(usersFilePath, JSON.stringify(usersData, null, 2));
-
-        sendResponse(res, httpStatus.OK, httpStatusMessages[httpStatus.OK]);
-    } catch (error) {
-        console.log(error.message);
-        if (error instanceof InvalidKeyErrorException) {
-            return sendResponse(res, httpStatus.UNAUTHORIZED, error.message);
-        }
-        if (error instanceof UserNotExistingError) {
-            return sendResponse(res, httpStatus.NOT_FOUND, error.message);
-        }
-
-        sendResponse(res, httpStatus.INTERNAL_SERVER_ERROR, httpStatusMessages[httpStatus.INTERNAL_SERVER_ERROR])
-    }
+router.post('/reset_server', validateBody, (req, res) => {
+    // Handle reset server logic here
 });

-router.post('/validate_admin_password', (req, res) => {
-    try {
-        const requestAdminKey = req.headers['admin-key'];
-        if (requestAdminKey !== res.locals.adminKey) {
-            console.log(res.locals.adminKey);
-            throw new InvalidKeyErrorException();
-        }
-
-        if(req.body.password === undefined){
-            return sendResponse(res, httpStatus.BAD_REQUEST, httpStatusMessages[httpStatus.BAD_REQUEST]);
-        }
-        const password = req.body.password;
-
-        const usersFilePath = path.join(__dirname, '..', 'db', 'users.json');
-        const usersData = fs.readFileSync(usersFilePath, 'utf8');
-        const usersJson = JSON.parse(usersData);
-
-        const user = usersJson.find(user => user.id === res.locals.ceoID);
-        if(user.password !== password){
-            return sendResponse(res, httpStatus.UNAUTHORIZED, httpStatusMessages[httpStatus.UNAUTHORIZED]);
-        }
-
-        sendResponse(res, httpStatus.OK, httpStatusMessages[httpStatus.OK]);
-    } catch (error) {
-        console.log(error.message);
-        if(error instanceof InvalidKeyErrorException){
-            return sendResponse(res, httpStatus.UNAUTHORIZED, error.message);
-        }
-
-        sendResponse(res, httpStatus.INTERNAL_SERVER_ERROR, httpStatusMessages[httpStatus.INTERNAL_SERVER_ERROR]);
-    }
+router.get('/ceo', validateBody, (req, res) => {
+    // Retrieve CEO info
 });

-router.use((req, res) => {
-    return sendResponse(res, httpStatus.NOT_FOUND, "Path not found");
+router.get('/users', validateBody, (req, res) => {
+    // Retrieve all users in the system
 });

 module.exports = router;
@@ -0,0 +1,15 @@
+const express = require('express');
+const router = express.Router();
+
+function validateBody(req, res, next) {
+    next();
+}
+
+router.patch('/', validateBody, (req, res) => {
+    const { id, ip, backup_schema, size } = req.body;
+});
+
+router.get('/', validateBody, (req, res) => {
+});
+
+module.exports = router;
@@ -0,0 +1,40 @@
+const express = require('express');
+const router = express.Router();
+
+function validateBody(req, res, next) {
+    next();
+}
+
+router.post('/login', validateBody, (req, res) => {
+    const { email, password } = req.body;
+});
+
+router.get('/set_security_levels', validateBody, (req, res) => {
+});
+
+router.get('/users/delete/:id', validateBody, (req, res) => {
+    const { id } = req.params;
+});
+
+router.post('/departments', validateBody, (req, res) => {
+    const { name } = req.body;
+    // Generate key with crypto of 32Hex
+});
+
+router.get('/departments/:id', validateBody, (req, res) => {
+    const { id } = req.params;
+});
+
+router.put('/', validateBody, (req, res) => {
+    const { email } = req.body;
+});
+
+router.get('/', validateBody, (req, res) => {
+    // Send CEO info
+});
+
+router.get('/get_decrypt_keys', (req, res) => {
+    // Get all departments
+});
+
+module.exports = router;
@@ -1,224 +0,0 @@
-const express = require('express');
-const fs = require('fs');
-const path = require('path');
-const { v4: uuidv4 } = require('uuid');
-const crypto = require('crypto');
-
-const { sendResponse } = require('../helpers/responseHelper');
-const {httpStatus, httpStatusMessages} = require('../helpers/httpResponses')
-const {schemas} = require("../models/schemaMapper");
-
-const DepartmentAlreadyExistsError = require("../exceptions/departmentAlreadyExistsError");
-const InvalidDepartmentJsonError = require("../exceptions/invalidDepartmentJsonError");
-const DepartmentNotExistingError = require("../exceptions/departmentNotExistingError");
-
-const router = express.Router();
-
-router.get('/', (req, res) => {
-    try {
-        const departmentsFilePath = path.join(__dirname, '..', 'db', 'departments.json');
-        const departmentsData = fs.readFileSync(departmentsFilePath, 'utf8');
-        const departments = JSON.parse(departmentsData);
-
-
-        return sendResponse(res, httpStatus.OK, httpStatusMessages[httpStatus.OK], departments);
-    } catch (error) {
-        console.error(`Error: ${error.message}`);
-        return sendResponse(res, httpStatus.INTERNAL_SERVER_ERROR, httpStatusMessages[httpStatus.INTERNAL_SERVER_ERROR]);
-    }
-});
-
-
-function generateAESKey() {
-    return crypto.randomBytes(32).toString('hex');
-}
-
-router.post('/', validateRegisterBody, createDepartment, addSecurityLevel, (req, res) => {
-    return res;
-});
-
-function validateRegisterBody(req, res, next) {
-    const { error, value } = schemas.departmentRegisterModelSchema.validate(req.body);
-    if (error) {
-        return sendResponse(res, httpStatus.BAD_REQUEST, error.details[0].message);
-    }
-    req.jsonModel = value;
-    next();
-}
-
-function createDepartment(req, res, next) {
-    try {
-        const { name } = req.jsonModel;
-
-        const departmentsFilePath = path.join(__dirname, '..', 'db', 'departments.json');
-        const departmentsData = fs.readFileSync(departmentsFilePath, 'utf8');
-        const departments = JSON.parse(departmentsData);
-
-        const existingDepartment = departments.find(department => department.name === name);
-        if (existingDepartment) {
-            throw new DepartmentAlreadyExistsError();
-        }
-
-        const departmentId = uuidv4();
-        const aesKey = generateAESKey();
-        const newDepartment = {
-            id: departmentId,
-            name: name,
-            key: aesKey
-        };
-
-        departments.push(newDepartment);
-        fs.writeFileSync(departmentsFilePath, JSON.stringify(departments, null, 2));
-
-        req.departmentId = departmentId;
-        next();
-
-        return res;
-    } catch (error) {
-        console.error(`Error: ${error.message}`);
-        if (error instanceof DepartmentAlreadyExistsError) {
-            return sendResponse(res, httpStatus.CONFLICT, error.message);
-        }
-        return sendResponse(res, httpStatus.INTERNAL_SERVER_ERROR, httpStatusMessages[httpStatus.INTERNAL_SERVER_ERROR]);
-    }
-}
-
-function addSecurityLevel(req, res) {
-    try {
-        const { departmentId } = req;
-
-        const securityLevelsFilePath = path.join(__dirname, '..', 'db', 'security_levels.json');
-        const securityLevelsData = fs.readFileSync(securityLevelsFilePath, 'utf8');
-        const securityLevels = JSON.parse(securityLevelsData);
-
-        const nextIndex = Object.keys(securityLevels).length + 1;
-        securityLevels[nextIndex] = departmentId;
-
-        fs.writeFileSync(securityLevelsFilePath, JSON.stringify(securityLevels, null, 2));
-
-        return sendResponse(res, httpStatus.CREATED, httpStatusMessages[httpStatus.CREATED]);
-    } catch (error) {
-        console.error(`Error: ${error.message}`);
-        return sendResponse(res, httpStatus.INTERNAL_SERVER_ERROR, httpStatusMessages[httpStatus.INTERNAL_SERVER_ERROR]);
-    }
-}
-
-
-router.put('/', validateDepartmentsJson, validateSecurityLevels, updateSecurityLevels);
-
-function validateDepartmentsJson(req, res, next) {
-    try {
-        for (const key in req.body) {
-            if (!Number.isInteger(parseInt(key)) || typeof req.body[key] !== 'string') {
-                throw new InvalidDepartmentJsonError();
-            }
-        }
-
-        next();
-    } catch (error) {
-        console.error(`Error: ${error.message}`);
-        return sendResponse(res, httpStatus.BAD_REQUEST, error.message);
-    }
-}
-
-function validateSecurityLevels(req, res, next) {
-    try {
-        const securityLevelsFilePath = path.join(__dirname, '..', 'db', 'security_levels.json');
-        const securityLevelsData = fs.readFileSync(securityLevelsFilePath, 'utf8');
-        const securityLevels = JSON.parse(securityLevelsData);
-
-        if (Object.keys(req.body).length !== Object.keys(securityLevels).length) {
-            throw new InvalidDepartmentJsonError('Number of keys does not match the database');
-        }
-
-        const encounteredValues = new Set();
-        const securityLevelValues = Object.values(securityLevels);
-
-        for (const key in req.body) {
-            const requestBodyValue = req.body[key];
-            if (!securityLevels.hasOwnProperty(key)) {
-                throw new InvalidDepartmentJsonError('Invalid key found in request body');
-            }
-            const securityLevelValue = securityLevels[key];
-
-            if (!securityLevelValues.includes(securityLevelValue)) {
-                throw new InvalidDepartmentJsonError('Values do not match the database');
-            }
-
-            if (encounteredValues.has(requestBodyValue)) {
-                throw new InvalidDepartmentJsonError('Duplicate values found in request body');
-            }
-
-            encounteredValues.add(requestBodyValue);
-        }
-
-        next();
-        return res;
-    } catch (error) {
-        console.error(`Error: ${error.message}`);
-        return sendResponse(res, httpStatus.BAD_REQUEST, error.message);
-    }
-}
-
-function updateSecurityLevels(req, res) {
-    try {
-        const securityLevelsFilePath = path.join(__dirname, '..', 'db', 'security_levels.json');
-        fs.writeFileSync(securityLevelsFilePath, JSON.stringify(req.body, null, 2));
-
-        return sendResponse(res, httpStatus.OK, httpStatusMessages[httpStatus.OK]);
-    } catch (error) {
-        console.error(`Error: ${error.message}`);
-        return sendResponse(res, httpStatus.INTERNAL_SERVER_ERROR, httpStatusMessages[httpStatus.INTERNAL_SERVER_ERROR]);
-    }
-}
-
-
-router.delete('/:id', async (req, res) => {
-    const id = req.params.id;
-
-    try {
-        deleteDepartment(id, res);
-    } catch (error) {
-        console.error(`Error: ${error.message}`);
-
-        if (error instanceof DepartmentNotExistingError) {
-            return sendResponse(res, httpStatus.NOT_FOUND, error.message);
-        }
-
-        return sendResponse(res, httpStatus.INTERNAL_SERVER_ERROR, httpStatusMessages[httpStatus.INTERNAL_SERVER_ERROR]);
-    }
-});
-
-function deleteDepartment(id, res) {
-    const departmentsFilePath = path.join(__dirname, '..', 'db', 'departments.json');
-    const departmentsData = fs.readFileSync(departmentsFilePath, 'utf8');
-    const departmentsJson = JSON.parse(departmentsData);
-
-    const index = departmentsJson.findIndex(department => department.id === id);
-    if (index === -1) {
-        throw new DepartmentNotExistingError();
-    }
-
-    departmentsJson.splice(index, 1);
-    fs.writeFileSync(departmentsFilePath, JSON.stringify(departmentsJson, null, 2));
-
-    const securityLevelsFilePath = path.join(__dirname, '..', 'db', 'security_levels.json');
-    const securityLevelsData = fs.readFileSync(securityLevelsFilePath, 'utf8');
-    const securityLevelsJson = JSON.parse(securityLevelsData);
-
-    const securityIndex = securityLevelsJson.findIndex(level => level.id === id);
-    if (securityIndex !== -1) {
-        securityLevelsJson.splice(securityIndex, 1);
-        fs.writeFileSync(securityLevelsFilePath, JSON.stringify(securityLevelsJson, null, 2));
-    }
-
-    return sendResponse(res, httpStatus.OK, httpStatusMessages[httpStatus.OK]);
-}
-
-
-
-router.use((req, res) => {
-    return sendResponse(res, httpStatus.NOT_FOUND, "Path not found");
-});
-
-module.exports = router;
@@ -1,359 +1,34 @@
 const express = require('express');
-const fs = require('fs');
-const path = require('path');
-const {v4: uuidv4, validate} = require('uuid');
-const crypto = require('crypto');
-
-const {sendResponse} = require('../helpers/responseHelper');
-const {httpStatus, httpStatusMessages} = require('../helpers/httpResponses')
-const {schemas} = require("../models/schemaMapper");
-
-const UserAlreadyExistsException = require('../exceptions/userAlreadyExistsError');
-const UserNotExistingError = require("../exceptions/userNotExistingError");
-const ImproperDirStructureError = require("../exceptions/improperDirStructureError");
-const EmailAlreadyInSystemError = require("../exceptions/emailAlreadyInSystemError");
-const {HttpStatusCode} = require("axios");
-const DepartmentAlreadyExistsError = require("../exceptions/departmentAlreadyExistsError");
-const DepartmentNotExistingError = require("../exceptions/departmentNotExistingError");
-
 const router = express.Router();

-
-router.get('/', async (req, res) => {
-    try {
-        const usersFilePath = path.join(__dirname, '..', 'db', 'users.json');
-        const usersData = fs.readFileSync(usersFilePath, 'utf8');
-        const usersJson = JSON.parse(usersData);
-
-        return sendResponse(res, httpStatus.OK, httpStatusMessages[httpStatus.OK], usersJson)
-    } catch (error) {
-        return sendResponse(res, httpStatus.INTERNAL_SERVER_ERROR, httpStatusMessages[httpStatus.INTERNAL_SERVER_ERROR])
-    }
-});
-
-const validateRegisterBody = (req, res, next) => {
-    const {error, value} = schemas.usersRegisterModelSchema.validate(req.body);
-    if (error) {
-        return sendResponse(res, httpStatus.BAD_REQUEST, error.details[0].message);
-    }
-    req.jsonModel = value;
+function validateBody(req, res, next) {
    next();
 }

-router.post('/register', validateRegisterBody, async (req, res) => {
-    try {
-        const usersFilePath = path.join(__dirname, '..', 'db', 'users.json');
-        const usersData = fs.readFileSync(usersFilePath, 'utf8');
-        const usersJson = JSON.parse(usersData);
-
-        const {name, email, password, department} = req.jsonModel;
-
-        const existingUser = usersJson.find(user => user.email === email);
-        if (existingUser) {
-            throw new UserAlreadyExistsException();
-        }
-
-        const userId = uuidv4();
-        const hashedPassword = crypto.createHash('sha256').update(password).digest('hex');
-
-        const newUser = {
-            id: userId,
-            name: name,
-            email: email,
-            password: hashedPassword,
-            department: department
-        };
-
-        usersJson.push(newUser);
-        fs.writeFileSync(usersFilePath, JSON.stringify(usersJson, null, 2));
-
-        return sendResponse(res, httpStatus.CREATED, httpStatusMessages[httpStatus.CREATED]);
-    } catch (error) {
-        console.error(`Error: ${error.message}`);
-
-        if (error instanceof UserAlreadyExistsException) {
-            return sendResponse(res, httpStatus.CONFLICT, error.message);
-        }
-
-        return sendResponse(res, httpStatus.INTERNAL_SERVER_ERROR, httpStatusMessages[httpStatus.INTERNAL_SERVER_ERROR]);
-    }
+router.post('/register', validateBody, (req, res) => {
+    const { name, email, password, department } = req.body;
 });

-
-const validateLoginBody = (req, res, next) => {
-    const {error, value} = schemas.usersLoginModelSchema.validate(req.body);
-    if (error) {
-        return sendResponse(res, httpStatus.BAD_REQUEST, error.details[0].message);
-    }
-    req.jsonModel = value;
-    next();
-}
-
-router.post('/login', validateLoginBody, async (req, res) => {
-    try {
-        const usersFilePath = path.join(__dirname, '..', 'db', 'users.json');
-        const usersData = fs.readFileSync(usersFilePath, 'utf8');
-        const usersJson = JSON.parse(usersData);
-
-        const {email, password} = req.jsonModel;
-        let userIndex = usersJson.findIndex(user => user.email === email);
-
-        if (userIndex === -1) {
-            throw new UserNotExistingError('Invalid email');
-        }
-
-        let hashedPassword = '';
-        if(usersJson[userIndex].id === res.locals.ceoID) {
-            hashedPassword = password;
-        }
-        else{
-            hashedPassword = crypto.createHash('sha256').update(password).digest('hex');
-        }
-
-        console.log(email);
-        console.log(password);
-
-        userIndex = usersJson.findIndex(user => user.email === email && user.password === hashedPassword);
-        console.log(userIndex);
-        if (userIndex === -1) {
-            throw new UserNotExistingError('Invalid email or password');
-        }
-
-        const user = usersJson[userIndex];
-
-        return sendResponse(res, httpStatus.OK, {
-            id: user.id,
-            name: user.name,
-            email: email,
-            password: password,
-            department: user.department
-        });
-    } catch (error) {
-        console.error(`Error: ${error.message}`);
-
-        if (error instanceof UserNotExistingError) {
-            return sendResponse(res, httpStatus.UNAUTHORIZED, error.message);
-        }
-
-        return sendResponse(res, httpStatus.INTERNAL_SERVER_ERROR, httpStatusMessages[httpStatus.INTERNAL_SERVER_ERROR]);
-    }
+router.post('/login', validateBody, (req, res) => {
+    const { email, password } = req.body;
 });

-const validateEmailValidationBody = (req, res, next) => {
-    const {error, value} = schemas.emailVerificationSchema.validate(req.body);
-    if (error) {
-        return sendResponse(res, httpStatus.BAD_REQUEST, error.details[0].message);
-    }
-    req.jsonModel = value;
-    next();
-}
-
-router.post('/validate_email', validateEmailValidationBody, (req, res) => {
-    try {
-        const {email} = req.jsonModel;
-        const usersFilePath = path.join(__dirname, '..', 'db', 'users.json');
-        const usersData = fs.readFileSync(usersFilePath, 'utf8');
-        const usersJson = JSON.parse(usersData);
-
-        if (usersJson.some(user => user.email === email)) {
-            throw new EmailAlreadyInSystemError();
-        }
-
-        return sendResponse(res, httpStatus.OK, httpStatusMessages[httpStatus.OK]);
-    } catch (error) {
-        console.error(`Error: ${error.message}`);
-        if (error instanceof EmailAlreadyInSystemError) {
-            return sendResponse(res, httpStatus.CONFLICT, error.message);
-        }
-        return sendResponse(res, httpStatus.INTERNAL_SERVER_ERROR, httpStatusMessages[httpStatus.INTERNAL_SERVER_ERROR]);
-    }
+router.post('/email-validation', validateBody, (req, res) => {
+    const { email } = req.body;
 });

-
-const validateDirStructureBody = (req, res, next) => {
-    const {error, value} = schemas.dirStructureModelSchema.validate(req.body);
-    if (error) {
-        return sendResponse(res, httpStatus.BAD_REQUEST, error.details[0].message);
-    }
-    req.jsonModel = value;
-    next();
-};
-
-router.put('/dir_structure', validateDirStructureBody, (req, res) => {
-    try {
-        const {id, dir_config, total_space} = req.jsonModel;
-
-        const backupFilePath = path.join(__dirname, '..', 'db', 'backup_schemas.json');
-        let backupArray = [];
-        if (fs.existsSync(backupFilePath)) {
-            const backupData = fs.readFileSync(backupFilePath, 'utf8');
-            try {
-                backupArray = JSON.parse(backupData);
-            } catch (jsonParseError) {
-                throw new ImproperDirStructureError();
-            }
-        }
-
-        const existingIndex = backupArray.findIndex(item => item.id === id);
-        if (existingIndex !== -1) {
-            backupArray[existingIndex] = {
-                id: id,
-                dir_config: dir_config,
-                total_space: total_space
-            };
-        } else {
-            backupArray.push({
-                id: id,
-                dir_config: dir_config,
-                total_space: total_space
-            });
-        }
-
-        fs.writeFileSync(backupFilePath, JSON.stringify(backupArray, null, 2));
-
-        return sendResponse(res, httpStatus.OK, httpStatusMessages[httpStatus.OK]);
-    } catch (error) {
-        console.error(`Error: ${error.message}`);
-        if (error instanceof ImproperDirStructureError) {
-            return sendResponse(res, httpStatus.BAD_REQUEST, error.message);
-        }
-        return sendResponse(res, httpStatus.INTERNAL_SERVER_ERROR, httpStatusMessages[httpStatus.INTERNAL_SERVER_ERROR]);
-    }
+router.get('/', (req, res) => {
 });

-const validateUserDepartmentPatch = (req, res, next) => {
-    const {error, value} = schemas.userDepartmentPatchSchema.validate(req.body);
-    if (error) {
-        return sendResponse(res, httpStatus.BAD_REQUEST, error.details[0].message);
-    }
-    req.jsonModel = value;
-    next();
-};
-
-router.patch('/:id', validateUserDepartmentPatch, async (req, res) => {
-    const id = req.params.id;
-    console.log('esti aici');
-
-    try {
-        const department_id = req.jsonModel.department;
-
-        const usersFilePath = path.join(__dirname, '..', 'db', 'users.json');
-        const usersData = fs.readFileSync(usersFilePath, 'utf8');
-        const usersJson = JSON.parse(usersData);
-
-        const index = usersJson.findIndex(user => user.id === id);
-        if (index === -1) {
-            throw new UserNotExistingError();
-        }
-
-        const departmentsFilePath = path.join(__dirname, '..', 'db', 'departments.json');
-        const departmentsData = fs.readFileSync(departmentsFilePath, 'utf8');
-        const departments = JSON.parse(departmentsData);
-
-        console.log(departments);
-
-        const indexDepartment = departments.findIndex(department => department.id === department_id);
-        if (indexDepartment === -1) {
-            throw new DepartmentNotExistingError();
-        }
-
-        usersJson[index].department = department_id;
-        fs.writeFileSync(usersFilePath, JSON.stringify(usersJson, null, 2));
-
-        return sendResponse(res, httpStatus.OK, httpStatusMessages[httpStatus.OK]);
-    }catch(error){
-        console.log(error);
-        return sendResponse(res, httpStatus.INTERNAL_SERVER_ERROR, httpStatusMessages[httpStatus.INTERNAL_SERVER_ERROR]);
-    }
-})
-
-
-router.delete('/:id', async (req, res) => {
-    const id = req.params.id;
-
-    try {
-        const usersFilePath = path.join(__dirname, '..', 'db', 'users.json');
-        const usersData = fs.readFileSync(usersFilePath, 'utf8');
-        const usersJson = JSON.parse(usersData);
-
-        const index = usersJson.findIndex(user => user.id === id);
-        if (index === -1) {
-            throw new UserNotExistingError();
-        }
-
-        usersJson.splice(index, 1);
-        fs.writeFileSync(usersFilePath, JSON.stringify(usersJson, null, 2));
-
-        return sendResponse(res, httpStatus.OK, httpStatusMessages[httpStatus.OK]);
-    } catch (error) {
-        console.error(`Error: ${error.message}`);
-
-        if (error instanceof UserNotExistingError) {
-            return sendResponse(res, httpStatus.NOT_FOUND, error.message);
-        }
-
-        return sendResponse(res, httpStatus.INTERNAL_SERVER_ERROR, httpStatusMessages[httpStatus.INTERNAL_SERVER_ERROR]);
-    }
+router.put('/', validateBody, (req, res) => {
+    const { name, email, password } = req.body;
 });

-const validateModifyUserBody = (req, res, next) => {
-    const {error, value} = schemas.usersModifyModelSchema.validate(req.body);
-    if (error) {
-        return sendResponse(res, httpStatus.BAD_REQUEST, error.details[0].message);
-    }
-    req.jsonModel = value;
-    next();
-};
-
-router.put('/:id', validateModifyUserBody, async (req, res) => {
-    const id = req.params.id;
-
-    try {
-        const usersFilePath = path.join(__dirname, '..', 'db', 'users.json');
-        const usersData = fs.readFileSync(usersFilePath, 'utf8');
-        const usersJson = JSON.parse(usersData);
-
-        const {name, email, password} = req.jsonModel;
-
-        if (usersJson.some(user => user.email === email && user.id !== id)) {
-            throw new EmailAlreadyInSystemError();
-        }
-
-        let index = usersJson.findIndex(user => user.id === id);
-        if (index === -1) {
-            throw new UserNotExistingError();
-        }
-
-        const hashedPassword = crypto.createHash('sha256').update(password).digest('hex');
-
-        usersJson[index] = {
-            id: id,
-            name: name,
-            email: email,
-            password: hashedPassword
-        }
-
-        fs.writeFileSync(usersFilePath, JSON.stringify(usersJson, null, 2));
-
-        return sendResponse(res, httpStatus.OK, httpStatusMessages[httpStatus.OK]);
-    } catch (error) {
-        console.error(`Error: ${error.message}`);
-
-        if (error instanceof EmailAlreadyInSystemError) {
-            return sendResponse(res, httpStatus.CONFLICT, error.message);
-        }
-
-        if (error instanceof UserNotExistingError) {
-            return sendResponse(res, httpStatus.NOT_FOUND, error.message);
-        }
-
-        return sendResponse(res, httpStatus.INTERNAL_SERVER_ERROR, httpStatusMessages[httpStatus.INTERNAL_SERVER_ERROR]);
-    }
+router.patch('/change-department', validateBody, (req, res) => {
+    const { id, department } = req.body;
 });

-
-router.use((req, res) => {
-    return sendResponse(res, httpStatus.NOT_FOUND, "Path not found");
+router.get('/get_decrypt_keys', (req, res) => {
 });

 module.exports = router;
@@ -1,4 +1,31 @@
+General overview
+-
+
 For the use of the admin console, start with 'npm run start' the UI frontend.
 To see/modify the initial login credentials check the /config/config.json file. 

-WITHOUT SETTING THE CONFIG FILE FOR THE SERVER (API KEY) THE SERVER WILL NOT START!
+WITHOUT SETTING THE CONFIG FILE, THE SERVER WILL NOT WORK AS INTENDED!
+(click on the 'Reset UC' when first configuring the server to bring the
+UC at the initial state)
+
+Because the client and CEO apps are dependent on the Central Unit (UC), we strongly
+suggest you to make backup at a regular interval in case of hardware failing you will
+only have to deploy the server with the configurations already existing.
+
+Important aspects:
+-
+
+- The starting/stopping of the UC is handled by this 'Admin Console'. The server will not
+work if the server which servers as the 'Admin Console' is not running.
+- The main server will run at the port 5000, so make sure to configure your routers to
+enable routing to the server;
+- The client and CEO backup system of their applications will need access at ports 5001 and 5002,
+so also make sure to open those ports as well;
+- If the CEO wants to change the email address linked to the account, his password will be changed
+to a low-risk password, so make sure after any release to specify the account information;
+
+Closing thoughts
+-
+
+We really hope that you will enjoy our application and for any issues, feel free to contact us at
+'username@ourdomain.com' for troubleshooting and other problems.
@@ -7,6 +7,26 @@ const cookieParser = require('cookie-parser');

 const checkSession = require('./middlewares/checkSession');

+process.on('SIGINT', shutdown);
+process.on('SIGTERM', shutdown);
+
+function shutdown() {
+    console.log('Received kill signal, shutting down gracefully.');
+    const serverProcess = app.get('serverProcess');
+    if (serverProcess && typeof serverProcess.kill === 'function') {
+        console.log('Shutting down server process...');
+        serverProcess.kill(); // Send SIGTERM to server process
+
+        serverProcess.on('exit', () => {
+            console.log('Server process terminated.');
+            process.exit(0); // Exit main process cleanly
+        });
+    } else {
+        console.log('No server process or cannot be killed, exiting.');
+        process.exit(0); // Exit main process cleanly
+    }
+}
+
 const app = express()

 app.set('serverProcess', null);
@@ -18,7 +38,7 @@ app.use(bodyParser.json());
 app.use(express.static(path.join(__dirname, 'public', 'html')));
 app.use('/css', express.static(path.join(__dirname, 'public', 'css')));
 app.use('/js', express.static(path.join(__dirname, 'public', 'js')));
-app.use('/images', express.static(path.join(__dirname, 'public', 'assets')));
+app.use('/images', express.static(path.join(__dirname, 'public', 'images')));

 app.use(checkSession);

@@ -31,3 +51,5 @@ const PORT = process.env.PORT || 80;
 app.listen(PORT, () => {
    console.log(`Server is running on port ${PORT}`);
 });
+
+
@@ -15,6 +15,8 @@ body, html {
 }

 .container {
+    opacity: 0;
+
    display: flex;
    flex-direction: row;
    justify-content: space-evenly;
@@ -13,78 +13,9 @@ body, html {
    background-repeat: no-repeat;

 }
-
-.overlay {
-    display: none;
-    position: fixed;
-    width: 100%;
-    height: 100%;
-    top: 0;
-    left: 0;
-    right: 0;
-    bottom: 0;
-    background-color: rgba(0, 0, 0, 0.85);
-    z-index: 2;
-    cursor: pointer;
-}
-
-.ceo-validation-form {
-    position: absolute;
-    top: 50%;
-    left: 50%;
-    transform: translate(-50%, -50%);
-    width: 300px;
-    padding: 20px;
-    background: #1B1A55;
-    border-radius: 10px;
-    cursor: default;
-}
-
-.ceo-validation-form h2 {
-    text-align: center;
-    color: white;
-}
-
-.form-actions {
-    text-align: center;
-    padding-top: 20px;
-}
-
-.form-actions button {
-    padding: 10px 20px;
-    margin: 0 10px;
-    border: none;
-    border-radius: 5px;
-    cursor: pointer;
-}
-
-input {
-    text-align: center;
-    color: white;
-    font-weight: bold;
-    font-size: 1.2rem;
-    width: 80%;
-    padding: 1rem;
-    margin: 0.7rem;
-    background-color: #1B1A55;
-    border-radius: 10px;
-}
-
-#back_button {
-    background-color: #f44336;
-    width: 35%;
-    height: auto;
-    color: white;
-}
-
-#submit_button {
-    background-color: #4CAF50;
-    width: 35%;
-    height: auto;
-    color: white;
-}
-
 .container {
+    opacity: 0;
+
    display: flex;
    flex-direction: row;
    justify-content: space-evenly;
@@ -0,0 +1,25 @@
+.fade-in {
+    animation: fadeInAnimation 0.5s ease-in forwards;
+}
+
+.fade-out {
+    animation: fadeOutAnimation 0.5s ease-out forwards;
+}
+
+@keyframes fadeInAnimation {
+    from {
+        opacity: 0;
+    }
+    to {
+        opacity: 1;
+    }
+}
+
+@keyframes fadeOutAnimation {
+    from {
+        opacity: 1;
+    }
+    to {
+        opacity: 0;
+    }
+}
@@ -5,10 +5,28 @@
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="icon" href="/images/hard-disk.ico" type="image/x-icon">
    <link rel="stylesheet" type="text/css" href="/css/login.css">
+    <link rel="stylesheet" type="text/css" href="/css/transition.css">
    <script src="/js/login.js"></script>
+    <script>
+        function fadeIn() {
+            document.querySelector('.container').classList.remove('fade-out');
+            document.querySelector('.container').classList.add('fade-in');
+        }
+
+        function fadeOut(destination) {
+            const container = document.querySelector('.container');
+            container.classList.remove('fade-in');
+            container.classList.add('fade-out');
+
+            container.addEventListener('animationend', () => {
+                window.location.href = destination;
+            });
+        }
+    </script>
+
    <title>Login</title>
 </head>
-<body>
+<body onload="fadeIn()">
 <div class="container">
    <div class="header">
        <h1>DO WE KNOW</h1>
@@ -5,12 +5,28 @@
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="icon" href="/images/hard-disk.ico" type="image/x-icon">
    <link rel="stylesheet" href="/css/main_menu.css">
+    <link rel="stylesheet" href="/css/transition.css">

    <script src="/js/main_menu.js"></script>
+    <script>
+        function fadeIn() {
+            document.querySelector('.container').classList.remove('fade-out');
+            document.querySelector('.container').classList.add('fade-in');
+        }
+
+        function fadeOut() {
+            document.querySelector('.container').classList.remove('fade-in');
+            document.querySelector('.container').classList.add('fade-out');
+            // Redirect after fadeOut animation completes (adjust timeout as needed)
+            setTimeout(() => {
+                window.location.href = 'your_redirect_url.html';
+            }, 500);
+        }
+    </script>

    <title>Main Page</title>
 </head>
-<body>
+<body onload="fadeIn()">
 <div class="container">
    <div class="main_block">
        <div class="header">
@@ -28,7 +44,10 @@
            </div>
            <div class="content_buttons">
                <button id="ceo_info" name="menu_button">Get CEO Info</button>
-                <button id="set_conf" name="menu_button">Set Server Conf File</button>
+                <button id="users_info" name="menu_button">Get All Users</button>
+            </div>
+            <div class="content_buttons">
+                <button id="reset_uc" name="menu_button">Reset UC</button>
            </div>
        </div>
        <div class="footer">
@@ -26,7 +26,7 @@ document.addEventListener('DOMContentLoaded', function () {
                document.cookie = `email=${result.user.email};`;
                document.cookie = `name=${result.user.name};`;

-                window.location.href = '/';
+                fadeOut('/');
            } else {
                alert('Incorrect credentials. Please try again.');
            }
@@ -28,7 +28,8 @@ document.addEventListener('DOMContentLoaded', function() {
    const startUcButton = document.getElementById('start_uc');
    const stopUcButton = document.getElementById('stop_uc');
    const ceoInfoButton = document.getElementById('ceo_info');
-    const setConfButton = document.getElementById('set_conf');
+    const usersInfoButton = document.getElementById('users_info');
+    const resetUcButton = document.getElementById('reset_uc');
    const logoutButton = document.getElementById('logout');

    startUcButton.addEventListener('click', () => {
@@ -63,11 +64,15 @@ document.addEventListener('DOMContentLoaded', function() {
        console.log('Ceo Info Button pressed');
    })

-    setConfButton.addEventListener('click', () => {
+    usersInfoButton.addEventListener('click', () => {
+        console.log('Users Info Button pressed');
+    })
+
+    resetUcButton.addEventListener('click', () => {
        console.log('Set Conf Button pressed');
    })

-    logoutButton.addEventListener('click', function() {
+    logoutButton.addEventListener('click', () => {
        console.log('Logout button was clicked');

        const deleteCookie = (name) => {
@@ -77,6 +82,6 @@ document.addEventListener('DOMContentLoaded', function() {
        deleteCookie('email');
        deleteCookie('name');

-        window.location.href = '/login';
+        fadeOut('/login');
    });
 });
@@ -1,11 +1,9 @@
 const express = require('express');
 const path = require('path');
-const fs = require('fs').promises;
 const { fork } = require('child_process');
 const httpStatus = require('../helpers/status_codes');

 const router = express.Router();
-
 const backendPath = path.join(__dirname, '..', '..', 'backend');

 router.get('/', (req, res) => {
@@ -15,44 +13,38 @@ router.get('/', (req, res) => {
 router.post('/server', async (req, res) => {
    const action = req.body.action;
    let serverProcess = req.app.get('serverProcess');
-    const configFilePath = path.join(backendPath, 'config', 'config.json');
-
-    try {
-        await fs.access(configFilePath);
-    } catch (error) {
-        if(action === 'start'){
-            return res.status(httpStatus.BAD_REQUEST).send({ message: 'Config file is missing, cannot start server.' });
-        }
-    }

    if (action === 'start') {
        if (serverProcess) {
            return res.status(httpStatus.BAD_REQUEST).send({message: 'Server is already running.'});
        }
        const serverPath = path.join(backendPath, 'src', 'app.js');
-        serverProcess = fork(serverPath);
+        serverProcess = fork(serverPath, [], { stdio: 'inherit' }); // Add stdio: 'inherit' to see child process logs in the parent process console

        serverProcess.on('message', (msg) => {
            console.log('Message from server:', msg);
        });

-        serverProcess.on('close', (code) => {
-            console.log(`Server process exited with code ${code}`);
+        serverProcess.on('close', (code, signal) => {
+            console.log(`Server process exited with code ${code} and signal ${signal}`);
            req.app.set('serverProcess', null);
        });

-        req.app.set('serverProcess', serverProcess); // Update the serverProcess in app
+        req.app.set('serverProcess', serverProcess); // Update the serverProcess in the app
        res.status(httpStatus.OK).json({message: 'Server starting...'});
    } else if (action === 'stop') {
        if (!serverProcess) {
            return res.status(httpStatus.BAD_REQUEST).json({message: 'Server is not running.'});
        }
-        serverProcess.kill();
-        req.app.set('serverProcess', null);
+        serverProcess.kill('SIGTERM');
        res.status(httpStatus.OK).json({message: 'Server stopping...'});
    } else {
        res.status(httpStatus.BAD_REQUEST).json({message: 'Invalid action.'});
    }
 });

+router.post('ceo_credentials', (req, res) => {
+
+});
+
 module.exports = router;
@@ -1,7 +0,0 @@
-{
-  "id": "ffc90aca-bb31-4641-9a43-30b343924e8a",
-  "name": "Andrei",
-  "email": "a@c.com",
-  "password": "andreicerbu",
-  "department": "16183532-3090-4e24-8def-aa29f316c1c5"
-}