Clean code.

Correct crud functions.
WIP
2020-09-06 19:36:58 +02:00 · 2020-09-06 19:23:11 +02:00 · 2020-09-06 12:20:22 +02:00 · 2020-09-06 11:54:57 +02:00 · 2020-09-05 19:18:51 +02:00 · 2020-09-05 16:30:41 +02:00
20 changed files with 87 additions and 799 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1 @@
 **/node_modules
-docker/mongodb/data
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -5,15 +5,13 @@
    "version": "0.2.0",
    "configurations": [
        {
-            "name": "Launch Program with debugger",
            "type": "node",
            "request": "launch",
-            "cwd": "${workspaceFolder}",
-            "runtimeExecutable": "npm",
-            "runtimeArgs": [
-                "start"
+            "name": "Launch Program",
+            "skipFiles": [
+                "<node_internals>/**"
            ],
-            "port": 5858
+            "program": "${workspaceFolder}/src/js/app.js"
        }
    ]
 }
--- a/README.md
+++ b/README.md
@@ -1,80 +0,0 @@
-# Présentation
-Ce projet sert de socle technique facilitant le développement de "back-end" d'applications en NodeJS, communiquant avec une base MongoDB.
-
-## Base de données
-Il s'agit d'une base MongoDB.
-
-On peut simplement créer/démarrer la base en utilisant le fichier `docker-compose.yml` :
-
-```bash
-$ cd <PROJECT_PATH>/docker
-$ docker-compose up -d
-```
-
-Par défaut, la base utilise le port `27017`.
-
-# Application Back-end
-## Notions théoriques
-### Route
-Une route correspond à l'URI associée à un service exposé.
-
-Typiquement, une route est composée d'un chemin, par exemple `/users`, et d'un verbe http, par exemple `POST`.
-
-### Controleurs
-Un controlleur est un composant qui expose des services via la déclaration de routes.
-
-## Controlleurs
-### Création
-Pour créer un controlleur, il suffit de copier-coller le fichier `src/js/controller/templateCtrl.js` et de renommer la copie, de préférence, de cette façon `<entity>Ctrl.js`.
-
-Par exemple, si on veut exposer un service sur des entités représentant des voitures, on appelerait ce controlleur `carCtrl.js`.
-
-### Déclaration
-Une fois le controlleur créé, les routes qu'il contient ne sont pas effectives. En effet, le controlleur est créé mais n'est pas lié à l'application `Express`.
-
-Pour que notre nouveau controlleur soit utilisée par notre application, il va falloir le déclarer en modifiant le fichier `src/js/app.js`.
-
-Dans un premier temps, il va falloir importer notre controlleur, en utilisant l'instruction suivante, mais de préférence en haut du fichier `src/js/app.js` :
-
-```javascript
-const carController = require('./controller/carCtrl');
-```
-
-Puis, dans un second temps, il va falloir déclarer le controlleur dans l'application `Express`, en utilisant la méthode `use` comme ce qui suit :
-
-```javascript
-app.use('/cars', carController);
-```
-
-Voilà, votre controlleur est effectif, les services qu'il expose sont désormais accéssibles.
-
-# Communication avec la base de données
-## Notions théoriques
-MongoDB est un gestionnaire de base de données `NoSQL`, et orienté `Document`s.
-
-Un document est la représentation `JSON` d'entités.
-
-Les documents sont stockés dans des `collections`, ce sont des sortes de "dépôts".
-Par convention, on stocke les mêmes types d'entités dans une seule et même collection.
-
-Imaginons que notre application permette de gérer des voitures et des clients, alors on créera deux collections dans notre base de données : `cars` et `customers`.
-
-Si notre application doit gérer plusieurs types de véhicules, des voitures essences, diesel, électriques, hybrides etc., alors on doit se demander si toutes ces entités doivent être stockées dans la même collection `cars`, ou si c'est plus pertinent d'en créer d'autres.
-
-Si la différence entre les différentes catégories de véhicules n'est pas très grande et peu importante dans la logique métier de l'application, alors il vaut mieux stocker toutes les voitures dans la même collection.
-
-## Manipulation d'une collection
-Il existe une classe permettant de créer/modifier/supprimer/récupérer des entités dans la base Mongo.
-
-Il s'agit de la classe `Repository`, définie dans le fichier `src/js/repository/repository.js`.
-
-Si on veut exposer des services pour manipuler des voitures, qui sont stockées dans la collection `cars`, il suffit alors de créer un objet `Repository`, en passant en paramètre du constructeur de cette classe, le nom de la collection :
-
-```javascript
-// En haut du fichier :
-const Repository = require('../repository/repository');
-...
-const carRepository = new Repository('cars');
-```
-
-Ensuite, il suffira d'utiliser les méthodes suivantes en fonction de l'implémentation souaitée des services qu'on veut exposer : `find`, `insert`, `update` et `delete`.
--- a/docker/docker-compose.yml
+++ b/docker/docker-compose.yml
@@ -4,11 +4,4 @@ services:
    container_name: "mongo"
    image: "mongo:latest"
    ports:
-     - "27017:27017"
-    environment:
-     - "MONGO_INITDB_DATABASE=db_application"
-     - "MONGO_INITDB_ROOT_USERNAME=god"
-     - "MONGO_INITDB_ROOT_PASSWORD=P@ssword"
-    volumes:
-     - "./mongodb/docker-entrypoint-initdb.d:/docker-entrypoint-initdb.d/:ro"
-     - "./mongodb/data:/data/db"
+     - "27017:27017"
--- a/docker/mongodb/docker-entrypoint-initdb.d/initDatabase.js
+++ b/docker/mongodb/docker-entrypoint-initdb.d/initDatabase.js
@@ -1,10 +0,0 @@
-db.createUser(
-    {
-      user: "application_user",
-      pwd: "P@ssword1",
-      roles:
-        [
-          { role: "readWrite", db: "db_application" }
-        ]
-    }
-)
--- a/package-lock.json
+++ b/package-lock.json
@@ -67,7 +67,8 @@
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@@ -142,20 +143,6 @@
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      "version": "3.1.0",
      "resolved": "https://registry.npmjs.org/widest-line/-/widest-line-3.1.0.tgz",
@@ -2664,7 +2271,8 @@
    "wrappy": {
      "version": "1.0.2",
      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
+      "dev": true
    },
    "write": {
      "version": "1.0.3",
@@ -2692,16 +2300,6 @@
      "resolved": "https://registry.npmjs.org/xdg-basedir/-/xdg-basedir-4.0.0.tgz",
      "integrity": "sha512-PSNhEJDejZYV7h50BohL09Er9VaIefr2LMAf3OEmpCkjOi34eYyQYAXUTjEQtZJTKcF0E2UKTh+osDLsgNim9Q==",
      "dev": true
-    },
-    "yallist": {
-      "version": "3.1.1",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.1.1.tgz",
-      "integrity": "sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g=="
-    },
-    "yaml": {
-      "version": "1.10.0",
-      "resolved": "https://registry.npmjs.org/yaml/-/yaml-1.10.0.tgz",
-      "integrity": "sha512-yr2icI4glYaNG+KWONODapy2/jDdMSDnrONSjblABjD9B4Z5LgiircSt8m8sRZFNi08kG9Sm0uSHtEmP3zaEGg=="
    }
  }
 }
--- a/package.json
+++ b/package.json
@@ -11,11 +11,8 @@
  "author": "",
  "license": "ISC",
  "dependencies": {
-    "bcrypt": "^5.0.0",
    "express": "^4.17.1",
-    "jsonwebtoken": "^8.5.1",
-    "mongodb": "^3.6.1",
-    "yaml": "^1.10.0"
+    "mongodb": "^3.6.1"
  },
  "devDependencies": {
    "eslint": "^7.4.0",
--- a/src/js/app.js
+++ b/src/js/app.js
@@ -1,7 +1,6 @@
 const express = require('express');
 const bodyParser = require('body-parser');
 const applicationController = require('./controller/applicationCtrl');
-const userController = require('./controller/userCtrl');

 const port = 3000;

@@ -10,6 +9,5 @@ app.use(bodyParser.urlencoded({ extended: true }));
 app.use(bodyParser.json());

 app.use('/apps', applicationController);
-app.use('/users', userController);

 app.listen(port, () => console.log('Mock is listening at port ', port, '\n'));
--- a/src/js/configuration.js
+++ b/src/js/configuration.js
@@ -1,6 +1,8 @@
-const fs = require('fs');
-const yaml = require('yaml');
-
-const configurationFile = fs.readFileSync('src/resources/application.yml', 'utf8');
-const configuration = yaml.parse(configurationFile);
-module.exports = configuration;
+module.exports = {
+    database: {
+        url: 'mongodb://localhost:27017',
+        username: 'express-user',
+        password: 'P@ssword1',
+        database: 'express-test'
+    }
+};
--- a/src/js/controller/applicationCtrl.js
+++ b/src/js/controller/applicationCtrl.js
@@ -1,8 +1,7 @@
+const ObjectId = require('mongodb').ObjectId;
 const Repository = require('../repository/repository');
-const authenticationFilter = require('../filter/authenticationFilter');
-const express = require('express');
+const router = require('express').Router();

-const router = express.Router();
 const applicationRepository = new Repository('applications');

 router.get('/', (request, response) => {
@@ -11,12 +10,6 @@ router.get('/', (request, response) => {
    });
 });

-router.get('/:applicationId', (request, response) => {
-    applicationRepository.find({_id: request.params.applicationId}, (result) => {
-        response.json(result[0]);
-    });
-});
-
 router.post('/', (request, response) => {
    applicationRepository.insert(request.body, (result) => {
        response.json(result);
@@ -24,7 +17,7 @@ router.post('/', (request, response) => {
 });

 router.put('/:applicationId', (request, response) => {
-    const applicationId = request.params.applicationId;
+    const applicationId = ObjectId(request.params.applicationId);
    applicationRepository.find({_id: applicationId}, entity => {
        if (entity.length === 0) {
            response.status(404).send();
@@ -38,8 +31,8 @@ router.put('/:applicationId', (request, response) => {
    });
 });

-router.delete('/:applicationId', authenticationFilter, (request, response) => {
-    const applicationId = request.params.applicationId;
+router.delete('/:applicationId', (request, response) => {
+    const applicationId = ObjectId(request.params.applicationId);
    applicationRepository.find({_id: applicationId}, entity => {
        if (entity.length === 0) {
            response.status(404).send();
--- a/src/js/controller/templateCtrl.js
+++ b/src/js/controller/templateCtrl.js
@@ -1,5 +0,0 @@
-const router = require('express').Router();
-
-// Develop routes here
-
-module.exports = router;
--- a/src/js/controller/userCtrl.js
+++ b/src/js/controller/userCtrl.js
@@ -1,20 +0,0 @@
-const router = require('express').Router();
-const tokenService = require('../service/tokenService');
-const userService = require('../service/userService');
-
-router.post('/login', (request, response) => {
-    const loginRequest = request.body;
-
-    if (!loginRequest) {
-        response.status(403).send();
-    } else {
-        userService.checkCredentials(loginRequest.login, loginRequest.password,
-            () => {
-                const tokenPayload = { login: loginRequest.login };
-                response.json(tokenService.build(tokenPayload));
-            },
-            () => response.status(403).send());
-    }
-});
-
-module.exports = router;
--- a/src/js/filter/authenticationFilter.js
+++ b/src/js/filter/authenticationFilter.js
@@ -1,17 +0,0 @@
-const tokenService = require('../service/tokenService');
-
-module.exports = (request, response, next) => {
-    const authenticationHeader = request.headers.authorization;
-
-    if (authenticationHeader) {
-        const token = authenticationHeader.split(' ')[1];
-        
-        if (tokenService.isValid(token)) {
-            next();
-        } else {
-            response.status(403).send();
-        }
-    } else {
-        response.status(401).send();
-    }
-};
--- a/src/js/repository/mongoClient.js
+++ b/src/js/repository/mongoClient.js
@@ -1,48 +1,30 @@
 const mongodb = require('mongodb');
-const configuration = require('../configuration');
-const mongoConfig = configuration.mongodb;
+const assert = require('assert');

-function buildDatabaseUrl() {
-    const username = encodeURIComponent(mongoConfig.username);
-    const password = encodeURIComponent(mongoConfig.password);
-    const url = mongoConfig.url;
-    const port = mongoConfig.port;
-    const database = mongoConfig.database;
-    const test = `mongodb://${username}:${password}@${url}:${port}/${database}`;
-    console.log(test);
-    return test;
-}
+const configuration = require('../configuration');
+const mongoConfig = configuration.database;

 class MongoClient {
    constructor() {
-        mongodb.MongoClient.connect(buildDatabaseUrl(), (error, client) => {
-            if (error !== null) {
-                throw new Error(`Unable de connect to Mongo database: ${error}`);
-            }
-
+        mongodb.MongoClient.connect(mongoConfig.url, (error, client) => {
+            assert.equal(null, error, `Unable to connect to mongodb: ${error}.`);
            console.log('Connected successfuly to mongodb');
            this.db = client.db(mongoConfig.database);
        });
    }

-    find(collectionName, query, onSuccess, onError) {
+    find(collectionName, query, callback) {
        this.db.collection(collectionName).find(query).toArray()
            .then(results => {
                console.log(`Entities ${collectionName} founded.`);
-                onSuccess(results);
+                callback(results);
            })
-            .catch(error => {
-                console.error(`Unable to find entities in collection ${collectionName}: ${error}`);
-                onError(error);
-            });
+            .catch(error => console.error(error));
    }

    insert(collectionName, entity, callback) {
-        this.db.collection(collectionName).insertOne(entity, (error, result) => {
-            if (error !== null) {
-                throw new Error(`Unable to insert ${collectionName} entity: ${error}`);
-            }
-            
+        this.db.collection(collectionName).insert(entity, (error, result) => {
+            assert.equal(null, error, `Unable to insert ${collectionName} entity: ${error}.`);
            console.log(`Entity ${collectionName} inserted.`);
            // Return only the inserted document.
            callback(result.ops[0]);
@@ -50,27 +32,21 @@ class MongoClient {
    }

    update(collectionName, entity, callback) {
-        this.db.collection(collectionName).updateOne({_id: mongodb.ObjectId(entity._id)}, {$set: entity}, {upsert: true}, (error) => {
-            if (error !== null) {
-                throw new Error(`Unable to update ${collectionName} entity: ${error}`);
-            }
-
+        this.db.collection(collectionName).save(entity, (error) => {
+            assert.equal(null, error, `Unable to update ${collectionName} entity: ${error}.`);
            console.log(`Entity ${collectionName} updated.`);
            callback();
        });
    }

    delete(collectionName, entityId, callback) {
-        this.db.collection(collectionName).deleteOne({_id: mongodb.ObjectId(entityId)}, (error) => {
-            if (error !== null) {
-                throw new Error(`Unable to delete ${collectionName} entity with id ${entityId}: ${error}`);
-            }
-
+        this.db.collection(collectionName).deleteOne({_id: mongodb.ObjectId(entityId)}, (error, result) => {
+            assert.equal(null, error, `Unable to delete ${collectionName} entity with id ${entityId}: ${error}.`);
            console.log(`Entity ${collectionName} with id ${entityId} deleted.`);
            callback();
        });
    }
 }

-const singleton = new MongoClient();
-module.exports = singleton;
+const mongoClient = new MongoClient();
+module.exports = mongoClient;
--- a/src/js/repository/repository.js
+++ b/src/js/repository/repository.js
@@ -1,64 +1,26 @@
 const mongoClient = require('./mongoClient');
-const ObjectId = require('mongodb').ObjectId;

-/**
- * If entity in parameters has an attribute named "_id", this function converts it into a MongoDB {@code ObjectId}.
- */
-function convertIdToMongodbFormat(entity) {
-    if (!!entity._id && !(entity._id instanceof ObjectId)) {
-        entity._id = ObjectId(entity._id);
-    }
-}
-
-module.exports = class Repository {
-    /**
-     * Creates a new repository which read and write into the {@code collectionName} collection in database.
-     * @param {String} collectionName 
-     */
+class Repository {
    constructor(collectionName) {
        this.collectionName = collectionName;
        this.mongoClient = mongoClient;
    }

-    /**
-     * Returns the entities that matches criteria in {@code query}.
-     * @param {Object} query The query which contains criteria to find some entities.
-     * @param {Function} onSuccess The function to execute after getting entities.
-     * @param {Function} onError  The function to execute if entity finding failed.
-     */
-    find(query, onSuccess, onError) {
-        convertIdToMongodbFormat(query);
-        this.mongoClient.find(this.collectionName, query, onSuccess, onError);
+    find(query, callback) {
+        this.mongoClient.find(this.collectionName, query, callback);
    }

-    /**
-     * Insert entity in database.
-     * @param {*} entity The entity to insert into database.
-     * @param {*} callback The function to execute after inserting entity.
-     */
    insert(entity, callback) {
        this.mongoClient.insert(this.collectionName, entity, callback);
    }

-    /**
-     * Update the whole entity in database.
-     * @param {*} entity The entity to update into database.
-     * @param {*} callback The function to execute after updating entity.
-     */
    update(entity, callback) {
-        convertIdToMongodbFormat(entity);
        this.mongoClient.update(this.collectionName, entity, callback);
    }

-    /**
-     * Delete entity in database.
-     * @param {*} entityId Entity to delete id.
-     * @param {*} callback The function to execute after deleting entity.
-     */
    delete(entityId, callback) {
-        if (!(entityId instanceof ObjectId)) {
-            entityId = ObjectId(entityId);
-        }
        this.mongoClient.delete(this.collectionName, entityId, callback);
    }
-};
+};
+
+module.exports = Repository;
--- a/src/js/service/passwordService.js
+++ b/src/js/service/passwordService.js
@@ -1,27 +0,0 @@
-const bcrypt = require('bcrypt');
-const saltRounds = 10;
-
-class PasswordService {
-    /**
-     * Hashes the password in parameters.
-     * @param {String} password The plain text password.
-     * @returns The hashed password.
-     */
-    hashPassword(password) {
-        const salt = bcrypt.genSaltSync(saltRounds);
-        return bcrypt.hashSync(password, salt);
-    }
-
-    /**
-     * Checks if the {@code plainTextPassword} matches the hashed password.
-     * @param {String} plainTextPassword The plain text password.
-     * @param {String} hashedPassword The hashed password.
-     * @returns A boolean.
-     */
-    areSamePasswords(plainTextPassword, hashedPassword) {
-        return bcrypt.compareSync(plainTextPassword, hashedPassword);
-    }
-}
-
-const singleton = new PasswordService();
-module.exports = singleton;
--- a/src/js/service/tokenService.js
+++ b/src/js/service/tokenService.js
@@ -1,31 +0,0 @@
-const jwt = require('jsonwebtoken');
-const configuration = require('../configuration');
-const securityConfig = configuration.security;
-
-class TokenService {
-    /**
-     * Builds a JWT token.
-     * @param {Object} tokenPayload The JWT payload.
-     * @returns {String} The JWT token.
-     */
-    build(tokenPayload) {
-        return jwt.sign(tokenPayload, securityConfig.jwt.secret, {expiresIn: securityConfig.jwt.validity});
-    }
-
-    /**
-     * Checks if the given token is valid, and provides from this application or not.
-     * @param {String} token The JWT token to check.
-     * @returns A boolean.
-     */
-    isValid(token) {
-        try {
-            jwt.verify(token, securityConfig.jwt.secret);
-        } catch (exception) {
-            return false;
-        }
-        return true;
-    }
-}
-
-const singleton = new TokenService();
-module.exports = singleton;
--- a/src/js/service/userService.js
+++ b/src/js/service/userService.js
@@ -1,42 +0,0 @@
-const Repository = require('../repository/repository');
-const passwordService = require('./passwordService');
-
-const userRepository = new Repository('users');
-
-class UserService {
-    /**
-     * Get a user from database by its login.
-     * @param {String} login User login.
-     * @param {Function} onSuccess Callback function to execute if a user exists with this login.
-     * @param {Function} onError Callback function to execute if not any user exists with this login.
-     */
-    getUser(login, onSuccess, onError) {
-        userRepository.find({login: login}, results => onSuccess(results[0]), onError);
-    }
-
-    /**
-     * Checks if credentials matches to an existing user, that have this password.
-     * @param {String} login User login.
-     * @param {String} password User password, in plain text.
-     * @param {Function} onSuccess Callback function to execute if a user exists with this login.
-     * @param {Function} onError Callback function to execute if not any user exists with this login.
-     */
-    checkCredentials(login, password, onSuccess, onError) {
-        this.getUser(
-            login,
-            dbUser => {
-                if (!!dbUser && passwordService.areSamePasswords(password, dbUser.password)) {
-                    onSuccess();
-                } else {
-                    onError();
-                }
-            },
-            // If login is incorrect, the "getUser" function will return "undefined".
-            // So if "user" is "undefined", this proofs that login is incorrect
-            onError
-        );
-    }
-}
-
-const singleton = new UserService();
-module.exports = singleton;
--- a/src/mongodb/initDatabase.js
+++ b/src/mongodb/initDatabase.js
@@ -0,0 +1,14 @@
+use express-test;
+
+db.collection.test.insert({id: 'test'});
+
+db.createUser(
+    {
+      user: "express-user",
+      pwd: "P@ssword1",
+      roles:
+        [
+          { role: "readWrite", db: "express-test" }
+        ]
+    }
+)
--- a/src/resources/application.yml
+++ b/src/resources/application.yml
@@ -1,10 +0,0 @@
-mongodb:
-  url: 'localhost'
-  port: 27017
-  username: 'application_user'
-  password: 'P@ssword1'
-  database: 'db_application'
-security:
-  jwt:
-    secret: 5ubtcCCo7hWBqjNGtzzVKnLT1KxN9uS4D6kRZowCunZAYPmxtKy6mvgoxANe4WqLVfiVI7AZSVqZCtvlSWFwIsnXGH6lxeKG0U8Wu7Kw0jwfFOGLvlO8bXaB
-    validity: 1h
Author	SHA1	Message	Date
takiguchi	29411d3c87	Clean code.	2020-09-06 19:36:58 +02:00
takiguchi	dc79b7bc0e	Correct crud functions.	2020-09-06 19:23:11 +02:00
Pierre THIERRY	d4cc887bf5	WIP	2020-09-06 12:20:22 +02:00
Pierre THIERRY	14da8bf0f1	Correct the insert function in base repository.	2020-09-06 11:54:57 +02:00
Pierre THIERRY	c618675a9a	Add src folder and correct base repository functions.	2020-09-05 19:18:51 +02:00
Pierre THIERRY	80253cabf8	Add mongo init database script.	2020-09-05 16:30:41 +02:00
Pierre THIERRY	2c424ac5d6	Add other function to base repository.	2020-09-05 16:30:25 +02:00
Pierre THIERRY	a558f09fb4	Add generics functions to mongo class.	2020-09-05 13:01:05 +02:00