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.env
node_modules/
.backup/
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# LupiNex Connect
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/*
! /actions/.templateAction.js
? Action socket.io handler template.
*/
// % export default action function
export default async function handleAction(socket, dbWorker, data) {
// $ Business logic for processing the chat message
console.log(`Received message from ${socket.id}:`, data.message);
// $ Respond back to the client or broadcast
socket.emit('chat.response', { status: 'success', text: 'Message received!' });
}
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/*
! /database/commands.js
? The command library for mariadb
*/
// % imports
import pools from './pools.js'; // functions "add(this)", "remove(this.name)", "status(name)"
// = command manager class
export default class Commands {
constructor(name, db, protocol = 'read', address = process.env.DB_CONN_IP) {
this.name = name; // persistent identifier
this.address = address; // database adress (host)
this.database = db; // database name
this.protocol = protocol; // user protocol
this.pool = null; // pool reference
this.connStat = false; // connection status
}
// $ add a connection to the pool manager
async connect() {
console.log(`[Database] Connecting command instance "${this.name}" to database "${this.database}"...`);
const result = await pools.add(this);
this.connStat = result.connStat;
this.pool = result.pool;
console.log(`[Database] Connection status for "${this.name}": ${this.connStat ? 'SUCCESS' : 'FAILED'}`);
}
// $ remove a connection from the pool manager
async disconnect() {
if (this.connStat) {
console.log(`[Database] Disconnecting instance "${this.name}"...`);
const result = await pools.remove(this.name);
this.connStat = result?.connStat ?? false;
this.pool = null;
console.log(`[Database] Instance "${this.name}" successfully disconnected.`);
}
}
// $ get the status of a connection from the pool manager
async status() {
if (this.connStat) {
console.log(`[Database] Checking status for instance "${this.name}"...`);
const result = await pools.status(this.name);
this.connStat = result?.connStat ?? false;
this.pool = result?.pool ?? null;
console.log(`[Database] Status for "${this.name}": Active = ${this.connStat}`);
return result;
} else {
console.log(`[Database] Status check skipped for "${this.name}" (currently not connected).`);
}
}
// $ execute an sql query
async query(query, params = []) {
// ~ check if connection is established
if (!this.connStat || !this.pool) {
console.error(`[Database Error] Tried to execute query on disconnected instance "${this.name}".`);
throw new Error(`Database connection '${this.name}' is not established.`);
}
// ~ connection reference
let conn;
// ~ try executing the query
try {
conn = await this.pool.getConnection();
const rows = await conn.query(query, params);
console.log(`[Database Query] [${this.name}] Executed successfully (${duration}ms):`, { query, params });
return rows;
// ~ throw error if failed
} catch(e) {
console.error(`[Database Error] Query failed in "${this.name}":`, e.message);
console.error(`[Failed Query]:`, query, params);
throw e;
// ~ release the connection back to the pool
} finally {
if (conn) conn.release();
}
}
// $ insert a record into a table
async insert(table, data) {
if (Object.keys(data).length === 0) return null;
const keys = Object.keys(data);
const values = Object.values(data);
const placeholders = keys.map(() => '?').join(', ');
const columns = keys.join(', ');
const query = `INSERT INTO ${table} (${columns}) VALUES (${placeholders})`;
return await this.query(query, values);
}
// $ update a record in a table
async update(table, data, where, whereParams = []) {
if (Object.keys(data).length === 0) return null;
const keys = Object.keys(data);
const values = Object.values(data);
const setClause = keys.map(key => `${key} = ?`).join(', ');
const query = `UPDATE ${table} SET ${setClause} WHERE ${where}`;
return await this.query(query, [...values, ...whereParams]);
}
// $ select records from a table
async select(table, columns = '*', where = '', params = []) {
let query = `SELECT ${Array.isArray(columns) ? columns.join(', ') : columns} FROM ${table}`;
if (where) {
query += ` WHERE ${where}`;
}
return await this.query(query, params);
}
// $ delete records from a table
async delete(table, where, params = []) {
const query = `DELETE FROM ${table} WHERE ${where}`;
return await this.query(query, params);
}
// $ create a new table
async createTable(table, columns = 'id INT AUTO_INCREMENT PRIMARY KEY') {
const query = `CREATE TABLE IF NOT EXISTS ${table} (${columns}) ENGINE=InnoDB DEFAULT CHARSET=utf8mb3 COLLATE=utf8mb3_general_ci`;
return await this.query(query);
}
// $ alter an existing table
async alterTable(table, modificationClause) {
const query = `ALTER TABLE ${table} ${modificationClause}`;
return await this.query(query);
}
};
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/*
! /database/index.js
? The central database worker factory for multi-project management.
*/
// % imports
/*
= The MariaDB-"Commands"-Library:
^ Create a new instance:
?? Create the command instance: "const dbName = new Commands(name, db, protocol, address);"
? Available protocols are "read", "write", "delete" and "backup".
? Address and protocol can be left empty for the default values. (selfdev-mariadb, read)
? Example: "const dbName = new Commands('reader', 'myDatabase');"
^ Connection Usage:
?? Add a new connection: "await dbName.connect();"
?? Remove a connection: "await dbName.disconnect();"
?? Check the status of a connection: "await dbName.status();"
^ Basic Query Usage:
?? Execute a basic sql query: "await dbName.query(query, params = []);"
? Example: "await dbName.query('SELECT * FROM langs');"
? Queries can be everything that is possible with mariadb.
? Returns an array of objects (for SELECT) or a result metadata object (for INSERT/UPDATE/DELETE).
^ Table Management Usage:
?? Execute a table creation: "await dbName.createTable(table, columns = 'id INT AUTO_INCREMENT PRIMARY KEY');"
? Example: "await dbName.createTable('projects', 'id INT AUTO_INCREMENT PRIMARY KEY, name VARCHAR(255)');"
? Automatically applies the ENGINE=InnoDB DEFAULT CHARSET=utf8mb3 COLLATE=utf8mb3_general_ci.
? Returns an object containing metadata like { affectedRows: 0, warningCount: 0 } or execution result.
?? Execute a table alteration: "await dbName.alterTable(table, modificationClause);"
? Example: "await dbName.alterTable('projects', 'ADD COLUMN created_at TIMESTAMP');"
? Returns an object containing metadata like { affectedRows: 0, warningCount: 0 } or execution result.
^ Helper Query Command Usage:
?? Execute an insert query: "await dbName.insert(table, data);"
? Example: "await dbName.insert('users', { name: 'Dummy', role: 'admin' });"
? Returns an object containing metadata like "{ affectedRows: 1, insertId: 12n }" or null if data is empty.
?? Execute an update query: "await dbName.update(table, data, where, whereParams = []);"
? Example: "await dbName.update('users', { role: 'editor' }, 'id = ?', [1]);"
? Returns an object containing metadata like { affectedRows: 1, warningCount: 0 } or null if data is empty.
?? Execute a selection query: "await dbName.select(table, columns = '*', where = '', params = []);"
? Example: "await dbName.select('users', ['id', 'name'], 'role = ?', ['admin']);"
? Returns an array of matching row objects, e.g. [{ id: 1, name: 'Dummy' }].
?? Execute a deletion query: "await dbName.delete(table, where, params = []);"
? Example: "await dbName.delete('users', 'id = ?', [1]);"
? Returns an object containing metadata like { affectedRows: 1 }.
*/
import Commands from "./commands.js";
// % internal registry for all dynamic project database instances
const registry = new Map();
/*
= The Database-Worker-Factory:
^ Get or create a project instance:
?? Usage: "const db = dbWorker.get(projectName, address);"
? Example: "const db = dbWorker.get('myProject', 'db_host_address');"
? Returns an object containing the command instances (e.g. { read, write, delete, backup }).
^ Connect all protocols for a certain project:
?? Usage: "await dbWorker.connectProject(projectName);"
? Example: "await dbWorker.connectProject('myProject');"
? Returns nothing.
^ Disconnect all protocols for a certain project:
?? Usage: "await dbWorker.disconnectProject(projectName);"
? Example: "await dbWorker.disconnectProject('myProject');"
? Returns nothing.
^ Query Usage Example:
?? const db = dbWorker.get('myProject');
?? await db.read.connect(); // optional, if "connectProject" was not called
?? const users = await db.read.select('users', '*', 'active = ?', [1]);
?? await db.write.insert('users', { name: 'Dummy' });
*/
export default {
// $ get or initialize database for a specific project
get(projectName, address) {
if (!projectName) {
throw new Error("A project name is required to get a database instance.");
}
// ~ return an existing project instance if already created
if (registry.has(projectName)) {
console.log(`[Database] Returning existing instance for project: "${projectName}"`);
return registry.get(projectName);
}
// $ debug-output
console.log(`[Database] Initializing new instances (read, write, delete, backup) for: "${projectName}"`);
// ~ create new instances (r,w,d,b) for the given project database
const instances = {
read: new Commands(`${projectName}_reader`, projectName, 'read', address || null),
write: new Commands(`${projectName}_writer`, projectName, 'write', address || null),
delete: new Commands(`${projectName}_deleter`, projectName, 'delete', address || null),
backup: new Commands(`${projectName}_backuper`, projectName, 'backup', address || null)
};
// ~ store the instance in the registry
registry.set(projectName, instances);
// ~ return result
return instances;
},
// $ helper to connect all instances of a specific project at once
async connectProject(projectName) {
console.log(`[Database] Connecting all instances for project: "${projectName}"...`);
const db = this.get(projectName);
await Promise.all([
db.read.connect(),
db.write.connect(),
db.delete.connect(),
db.backup.connect()
]);
},
// $ helper to disconnect all instances of a specific project
async disconnectProject(projectName) {
console.log(`[Database] Disconnecting all instances for project: "${projectName}"...`);
if (registry.has(projectName)) {
const db = registry.get(projectName);
await Promise.all([
db.read.disconnect(),
db.write.disconnect(),
db.delete.disconnect(),
db.backup.disconnect()
]);
registry.delete(projectName);
console.log(`[Database] Successfully disconnected and removed from registry: "${projectName}"`);
} else {
console.log(`[Database] Tried to disconnect project "${projectName}", but it was not found in registry.`);
}
}
};
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/*
! /database/pools.js
? The main database pool (connection) manager
*/
// % imports
import mariadb from 'mariadb';
// % database credentials mapping
const CREDENTIALS_MAP = {
read: { user: process.env.DB_READ_USER, pass: process.env.DB_READ_PASS },
write: { user: process.env.DB_WRITE_USER, pass: process.env.DB_WRITE_PASS },
delete: { user: process.env.DB_DELETE_USER, pass: process.env.DB_DELETE_PASS },
backup: { user: process.env.DB_BACKUP_USER, pass: process.env.DB_BACKUP_PASS }
}
// $ get database credentials
function getCredentials(protocol = 'read') {
const key = String(protocol).toLowerCase();
return CREDENTIALS_MAP[key] ?? CREDENTIALS_MAP.read;
}
// = pool manager class
class PoolManager {
constructor() {
this.pools = new Map();
}
// $ function to add a connection
async add(config) {
// ~ check if this pool is already existing → then return
if (this.pools.has(config.name)) {
return { pool: this.pools.get(config.name), connStat: true };
}
// ~ get database credentials by protocol
const { user, pass } = getCredentials(config.protocol);
// ~ create the mariadb pool
const pool = mariadb.createPool({
host: config.address,
port: Number(process.env.DB_CONN_PORT),
user,
password: pass,
database: config.database,
waitForConnections: true,
connectionLimit: 5,
queueLimit: 0,
enableKeepAlive: true,
keepAliveInitialDelay: 10000
});
// ~ add the pool to the map
this.pools.set(config.name, pool);
// ~ return the pool
return { pool, connStat: true };
}
// $ function to remove a connection
async remove(name) {
if (this.pools.has(name)) {
const pool = this.pools.get(name);
await pool.end();
this.pools.delete(name);
}
return { connStat: false };
}
// $ function to get the status of a connection
async status(name) {
if (this.pools.has(name)) {
try {
const pool = this.pools.get(name);
await pool.query('SELECT 1');
return { pool, connStat: true };
} catch(err) {
return { connStat: false, msg: err }
}
} else {
return { connStat: false };
}
}
}
// $ export the pool manager
export default new PoolManager();
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/*
! /index.js
? The central API interface and orchestration layer for external requests.
= LupiNex Connect API Roadmap:
^ Database-Worker-Factory:
DONE: The Database-Worker-Factory (/database/index.js) [30.08.2026] || The database documentation and usage can be found here.
DONE: The Database-Pool (Connection) Manager (/database/pools.js) [30.08.2026]
DONE: The MariaDB-"Commands"-Library (/database/commands.js) [30.08.2026]
^ WebSocket and Express Server:
DONE: The Express-WebSocket-Loader-Module (/server/index.js) [30.08.2026] || The server documentation and usage can be found here.
DONE: Autoloader for express routes (/server/routers.js) [30.08.2026]
DONE: Autoloader for socket.io actions (/server/actions.js) [30.08.2026]
TODO: Create a few actions for socket.io (/actions)
TODO: Create a few routers for express (/routers)
^ Validation-Middlewares:
TODO:
*/
// % imports
import 'dotenv/config'; // import the dotenv config
import server from './server/index.js'; // import the server structures (express, socket.io) // always at the end
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{
"name": "lupinex-connect",
"version": "1.0.0",
"description": "LupiNex-Connect - a complete backend ecosystem for the LupiNex Media infrastructure",
"keywords": [
"backend",
"infrastructure",
"ecosystem",
"controller",
"database"
],
"repository": {
"type": "git",
"url": "gitea:LupinexMedia/LupiNex-Connect.git"
},
"license": "UNLICENSED",
"author": "LupiNex Media",
"type": "module",
"main": "index.js",
"scripts": {
"test": "nodemon index.js"
},
"dependencies": {
"dotenv": "^17.4.2",
"ejs": "^6.0.1",
"express": "^5.2.1",
"fs": "^0.0.1-security",
"http": "^0.0.1-security",
"mariadb": "^3.5.3",
"path": "^0.12.7",
"socket.io": "^4.8.3",
"url": "^0.11.4"
}
}
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/*
! /routers/.templateRouter.js
? Express route handler template.
*/
// % export default route handler function
export default async function handleRoute(router) {
// $ Define endpoints using the passed router instance
router.get('/', async (req, res) => {
// $ Business logic for GET request
res.json({ status: 'success', message: 'Route reached successfully!' });
});
router.post('/', async (req, res) => {
// $ Business logic for POST request
const data = req.body;
res.json({ status: 'success', received: data });
});
}
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/*
! /server/actions.js
? Dynamic action loader for Socket.IO events using a recursive file system scan.
*/
// % imports
import fs from 'fs';
import path from 'path';
import { fileURLToPath, pathToFileURL } from 'url';
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
// % Target directory where the actual action files reside
const actionsDir = path.join(__dirname, '..', 'actions');
// $ debug-output
console.info('[Paths] Actions:', actionsDir);
/*
$ Recursive function to load action files and build a flat map for direct dot-notation access
= Maps all JavaScript files inside the actions directory into a flat key-value structure (e.g. 'chat.message').
^ Usage in WebSocket (Socket.io) Handlers:
?? import actions from './actions/index.js';
? Example: "socket.on('chat.message', (data) => actions['chat.message'](socket, data));"
? Example: "socket.on('system.ping', () => actions['system.ping'](socket));"
*/
async function loadActions(dir = actionsDir, baseDir = actionsDir, actionsObj = {}) {
const entries = fs.readdirSync(dir, { withFileTypes: true });
for (const entry of entries) {
const fullPath = path.join(dir, entry.name);
if (entry.isDirectory()) {
// ~ Pass the main object (actionsObj) further down recursively
await loadActions(fullPath, baseDir, actionsObj);
} else if (entry.isFile() && entry.name !== 'index.js' && !entry.name.startsWith('.') && entry.name.endsWith('.js')) {
// ~ Calculate the relative path from the root directory
const relativePath = path.relative(baseDir, fullPath);
const parts = relativePath.split(path.sep).map(p => p.replace(/\.js$/, ''));
// ~ Import the module
const fileUrl = pathToFileURL(fullPath).href;
const module = await import(fileUrl);
// ~ Map the module directly as a flat string key (e.g. "chat.message") into the main object
const eventName = parts.join('.');
actionsObj[eventName] = module.default || module;
}
}
return actionsObj;
}
// $ Initialize asynchronously and export the loaded actions object
const actions = await loadActions();
export default actions;
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/*
! /server/index.js
? Main entry point initializing Express, Socket.IO, and dynamic autoloaders for routes and actions.
*/
// % imports
import http from 'http';
import express from 'express';
import { Server as SocketServer } from 'socket.io';
import path from 'path';
import { fileURLToPath } from 'url';
import dbWorker from '../database/index.js'; // import the database worker & factory
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
/*
= The Socket.IO Action-Autoloader:
^ How it works:
? Recursively scans the "/actions" directory.
? Maps all JavaScript files into a nested object structure for dot-notation access.
? Ignores "index.js" and files starting with a dot (e.g., ".templateAction.js").
? Example mapping: "/actions/chat/message.js" becomes "chat.message(socket, data)".
^ Usage:
?? Import the actions: "import actions from './actions.js';"
?? Trigger an action inside a connection: "socket.on('chat.message', (data) => chat.message(socket, data));"
? The action template expects the active "socket" and incoming "data" as arguments.
*/
import actions from './actions.js';
/*
= The Express Router-Autoloader:
^ How it works:
? Recursively scans the "/routers" directory.
? Automatically generates a nested Express Router tree based on folder and file names.
? Ignores "index.js" and files starting with a dot (e.g., ".templateRouter.js").
? Files named "root.js" are mounted directly to their current directory path (/).
? Example mapping: "/routers/api/v1/users.js" becomes the endpoint "/api/v1/users".
^ Usage:
?? Import the master router: "import routers from './routers.js';"
?? Mount to Express app: "app.use('/', routers);"
? Each router template receives an Express sub-router instance to define its methods (GET, POST, etc.).
*/
import routers, { registeredEndpoints } from './routers.js';
// $ debug-output
console.info('[Autoloader] Loaded Actions:', Object.keys(actions));
console.info('[Autoloader] Loaded Routers:', registeredEndpoints);
// % server initialization
const app = express();
const server = http.createServer(app);
// % socket.io initialization
const io = new SocketServer(server, {
cors: {
origin: '*',
methods: ['GET', 'POST']
}
});
// % view engine & static resources
app.set('view engine', 'ejs');
app.set('views', path.join(__dirname, '..', 'frontend', 'views'));
app.use(express.static(path.join(__dirname, '..', 'frontend', 'resources')));
// % middleware
app.use(express.json());
app.use(express.urlencoded({ extended: true }));
// $ Inject database worker into every request
app.use((req, res, next) => {
req.db = dbWorker;
next();
});
// % mount routers
app.use('/', routers);
// % socket.io connection handling
io.on('connection', (socket) => {
console.log(`[Socket.IO] Client connected: ${socket.id}`);
// $ Automatically map all loaded actions to this socket
for (const [eventName, actionHandler] of Object.entries(actions)) {
if (typeof actionHandler === 'function') {
socket.on(eventName, (data) => actionHandler(socket, dbWorker, data));
}
}
socket.on('disconnect', () => {
console.log(`[Socket.IO] Client disconnected: ${socket.id}`);
});
});
// % start server
const PORT = process.env.PORT;
server.listen(PORT, () => {
console.log(`[Server] Express and Socket.IO are running on port ${PORT}`);
});
// $ export the server instance
export default server;
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/*
! /server/routers.js
? Dynamic Express router loader matching the action loader pattern.
*/
// % imports
import fs from 'fs';
import path from 'path';
import { fileURLToPath, pathToFileURL } from 'url';
import express from 'express';
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
// % Target directory where the actual route files reside
const routersDir = path.join(__dirname, '..', 'routers');
// $ debug-output
console.info('[Paths] Routers:', routersDir);
export const registeredEndpoints = [];
// $ recursive function to load routers and extract clean endpoints
async function loadRouters(dir = routersDir, baseDir = routersDir, currentPrefix = '') {
let mainRouter = express.Router();
const entries = fs.readdirSync(dir, { withFileTypes: true });
for (const entry of entries) {
const fullPath = path.join(dir, entry.name);
if (entry.isDirectory()) {
// ~ handle subdirectory and extend prefix
const subPrefix = `${currentPrefix}/${entry.name}`;
const subRouter = await loadRouters(fullPath, baseDir, subPrefix);
mainRouter.use(`/${entry.name}`, subRouter);
} else if (entry.isFile() && entry.name !== 'index.js' && !entry.name.startsWith('.') && entry.name.endsWith('.js')) {
const fileUrl = pathToFileURL(fullPath).href;
const module = await import(fileUrl);
const routeHandler = module.default || module;
const routeName = entry.name.replace(/\.js$/, '');
const subRouter = express.Router();
// ~ pass subrouter into the handler function
if (typeof routeHandler === 'function') {
await routeHandler(subRouter);
}
const finalFolderPrefix = currentPrefix === '' ? '' : currentPrefix;
const endpointPath = routeName === 'root' ? finalFolderPrefix || '/' : `${finalFolderPrefix}/${routeName}`;
// ~ extract methods and paths directly from the sub-router stack
subRouter.stack.forEach(layer => {
if (layer.route) {
const methods = Object.keys(layer.route.methods).join(', ').toUpperCase();
const subRoutePath = layer.route.path === '/' ? '' : layer.route.path;
registeredEndpoints.push(`${methods} ${endpointPath}${subRoutePath}`.replace(/\/+/g, '/'));
}
});
if (routeName === 'root') {
mainRouter.use('/', subRouter);
} else {
mainRouter.use(`/${routeName}`, subRouter);
}
}
}
return mainRouter;
}
// $ Initialize asynchronously and export the loaded routers object
const routers = await loadRouters();
// $ export
export default routers;
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