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https://github.com/Alvin-Zilverstand/narrow_casting_system.git
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🎿 Complete SnowWorld Narrowcasting System - MBO Challenge 18
✅ Full-stack narrowcasting platform implementation ✅ Real-time WebSocket communication for instant updates ✅ Zone-specific content distribution (reception, restaurant, skislope, lockers, shop) ✅ Professional admin dashboard with content management interface ✅ Beautiful client display with winter/snow theme matching SnowWorld branding ✅ Comprehensive technical documentation and test suite ✅ Docker deployment support with CI/CD pipeline ✅ All system tests passing successfully 🏗️ Technical Implementation: - Backend: Node.js/Express with SQLite database - Frontend: Vanilla HTML/CSS/JavaScript (no frameworks) - Real-time: Socket.io WebSocket communication - Database: Complete schema with content, schedule, zones, logs tables - Security: File validation, input sanitization, CORS protection - Performance: Optimized for fast loading and real-time updates 🚀 Features Delivered: - Content upload (images, videos) with drag-and-drop interface - Content scheduling and planning system - Weather widget with real-time snow information - Responsive design for all screen sizes - Comprehensive error handling and fallback mechanisms - Professional winter theme with snow animations - Keyboard shortcuts and accessibility features 📁 Project Structure: - /backend: Complete Node.js server with API and WebSocket - /admin: Professional admin dashboard interface - /client: Beautiful client display application - /deployment: Docker and deployment configurations - /docs: Comprehensive technical documentation - /test_system.js: Complete test suite (all tests passing) 🧪 Testing Results: - Server health: ✅ Online and responsive - API endpoints: ✅ All endpoints functional - Database operations: ✅ All operations successful - WebSocket communication: ✅ Real-time updates working - Zone distribution: ✅ 6 zones correctly loaded - Weather integration: ✅ Weather data available Ready for production deployment at SnowWorld! 🎿❄️
This commit is contained in:
Alvin-Zilverstand
308
backend/database/DatabaseManager.js
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308
backend/database/DatabaseManager.js
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const sqlite3 = require('sqlite3').verbose();
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const path = require('path');
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class DatabaseManager {
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constructor() {
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this.dbPath = path.join(__dirname, '../database/snowworld.db');
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this.db = null;
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}
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initialize() {
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// Ensure database directory exists
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const fs = require('fs-extra');
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fs.ensureDirSync(path.dirname(this.dbPath));
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this.db = new sqlite3.Database(this.dbPath, (err) => {
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if (err) {
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console.error('Error opening database:', err);
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return;
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}
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console.log('Connected to SQLite database');
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this.createTables();
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});
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}
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createTables() {
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const contentTable = `
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CREATE TABLE IF NOT EXISTS content (
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id TEXT PRIMARY KEY,
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type TEXT NOT NULL,
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title TEXT NOT NULL,
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filename TEXT NOT NULL,
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originalName TEXT NOT NULL,
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mimeType TEXT NOT NULL,
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size INTEGER NOT NULL,
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path TEXT NOT NULL,
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url TEXT NOT NULL,
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zone TEXT DEFAULT 'all',
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duration INTEGER DEFAULT 10,
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isActive INTEGER DEFAULT 1,
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createdAt TEXT NOT NULL,
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updatedAt TEXT
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)
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`;
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const scheduleTable = `
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CREATE TABLE IF NOT EXISTS schedule (
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id TEXT PRIMARY KEY,
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contentId TEXT NOT NULL,
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zone TEXT NOT NULL,
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startTime TEXT NOT NULL,
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endTime TEXT NOT NULL,
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priority INTEGER DEFAULT 1,
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isActive INTEGER DEFAULT 1,
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createdAt TEXT NOT NULL,
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FOREIGN KEY (contentId) REFERENCES content (id) ON DELETE CASCADE
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)
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`;
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const zonesTable = `
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CREATE TABLE IF NOT EXISTS zones (
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id TEXT PRIMARY KEY,
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name TEXT NOT NULL,
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description TEXT,
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displayOrder INTEGER DEFAULT 0,
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isActive INTEGER DEFAULT 1
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)
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`;
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const logsTable = `
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CREATE TABLE IF NOT EXISTS logs (
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id TEXT PRIMARY KEY,
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type TEXT NOT NULL,
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message TEXT NOT NULL,
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data TEXT,
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timestamp TEXT NOT NULL
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)
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`;
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this.db.serialize(() => {
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this.db.run(contentTable);
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this.db.run(scheduleTable);
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this.db.run(zonesTable);
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this.db.run(logsTable);
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// Insert default zones
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const defaultZones = [
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{ id: 'reception', name: 'Receptie', description: 'Hoofdingang en receptie', displayOrder: 1 },
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{ id: 'restaurant', name: 'Restaurant', description: 'Eetgelegenheid', displayOrder: 2 },
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{ id: 'skislope', name: 'Skibaan', description: 'Hoofdskibaan', displayOrder: 3 },
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{ id: 'lockers', name: 'Kluisjes', description: 'Kleedkamers en kluisjes', displayOrder: 4 },
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{ id: 'shop', name: 'Winkel', description: 'Ski-uitrusting winkel', displayOrder: 5 },
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{ id: 'all', name: 'Alle zones', description: 'Toon op alle schermen', displayOrder: 0 }
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];
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const stmt = this.db.prepare(`
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INSERT OR IGNORE INTO zones (id, name, description, displayOrder)
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VALUES (?, ?, ?, ?)
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`);
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defaultZones.forEach(zone => {
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stmt.run(zone.id, zone.name, zone.description, zone.displayOrder);
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});
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stmt.finalize();
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console.log('Database tables created successfully');
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});
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}
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// Content methods
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async addContent(contentData) {
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return new Promise((resolve, reject) => {
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const stmt = this.db.prepare(`
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INSERT INTO content (id, type, title, filename, originalName, mimeType, size, path, url, zone, duration, createdAt)
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VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
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`);
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stmt.run(
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contentData.id,
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contentData.type,
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contentData.title,
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contentData.filename,
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contentData.originalName,
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contentData.mimeType,
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contentData.size,
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contentData.path,
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contentData.url,
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contentData.zone,
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contentData.duration,
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contentData.createdAt,
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function(err) {
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if (err) {
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reject(err);
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} else {
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resolve(contentData);
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}
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}
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);
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stmt.finalize();
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});
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}
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async getContent(zone = null, type = null) {
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return new Promise((resolve, reject) => {
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let query = 'SELECT * FROM content WHERE isActive = 1';
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const params = [];
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if (zone && zone !== 'all') {
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query += ' AND (zone = ? OR zone = "all")';
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params.push(zone);
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}
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if (type) {
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query += ' AND type = ?';
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params.push(type);
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}
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query += ' ORDER BY createdAt DESC';
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this.db.all(query, params, (err, rows) => {
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if (err) {
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reject(err);
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} else {
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resolve(rows);
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}
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});
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});
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}
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async getContentById(id) {
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return new Promise((resolve, reject) => {
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this.db.get('SELECT * FROM content WHERE id = ?', [id], (err, row) => {
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if (err) {
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reject(err);
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} else {
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resolve(row);
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}
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});
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});
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}
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async deleteContent(id) {
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return new Promise((resolve, reject) => {
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this.db.run('DELETE FROM content WHERE id = ?', [id], function(err) {
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if (err) {
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reject(err);
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} else {
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resolve(this.changes > 0);
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}
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});
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});
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}
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// Schedule methods
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async addSchedule(scheduleData) {
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return new Promise((resolve, reject) => {
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const stmt = this.db.prepare(`
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INSERT INTO schedule (id, contentId, zone, startTime, endTime, priority, createdAt)
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VALUES (?, ?, ?, ?, ?, ?, ?)
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`);
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stmt.run(
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scheduleData.id,
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scheduleData.contentId,
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scheduleData.zone,
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scheduleData.startTime,
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scheduleData.endTime,
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scheduleData.priority,
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scheduleData.createdAt,
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function(err) {
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if (err) {
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reject(err);
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} else {
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resolve(scheduleData);
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}
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}
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);
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stmt.finalize();
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});
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}
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async getActiveSchedule(zone) {
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return new Promise((resolve, reject) => {
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const now = new Date().toISOString();
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const query = `
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SELECT s.*, c.* FROM schedule s
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JOIN content c ON s.contentId = c.id
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WHERE s.zone = ?
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AND s.startTime <= ?
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AND s.endTime >= ?
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AND s.isActive = 1
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AND c.isActive = 1
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ORDER BY s.priority DESC, s.createdAt ASC
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`;
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this.db.all(query, [zone, now, now], (err, rows) => {
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if (err) {
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reject(err);
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} else {
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resolve(rows);
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}
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});
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});
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}
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async getZones() {
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return new Promise((resolve, reject) => {
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this.db.all('SELECT * FROM zones WHERE isActive = 1 ORDER BY displayOrder', (err, rows) => {
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if (err) {
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reject(err);
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} else {
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resolve(rows);
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}
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});
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});
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}
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// Logging
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async addLog(type, message, data = null) {
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return new Promise((resolve, reject) => {
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const stmt = this.db.prepare(`
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INSERT INTO logs (id, type, message, data, timestamp)
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VALUES (?, ?, ?, ?, ?)
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`);
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const logData = {
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id: require('uuid').v4(),
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type,
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message,
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data: data ? JSON.stringify(data) : null,
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timestamp: new Date().toISOString()
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};
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stmt.run(
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logData.id,
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logData.type,
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logData.message,
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logData.data,
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logData.timestamp,
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function(err) {
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if (err) {
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reject(err);
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} else {
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resolve(logData);
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}
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}
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);
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stmt.finalize();
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});
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}
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close() {
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if (this.db) {
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this.db.close((err) => {
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if (err) {
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console.error('Error closing database:', err);
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} else {
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console.log('Database connection closed');
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}
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});
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}
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}
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}
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module.exports = DatabaseManager;
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