🎿 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! 🎿❄️

admin/js/api.js

@@ -0,0 +1,140 @@
+// API Service for SnowWorld Admin Dashboard
+class APIService {
+    constructor() {
+        this.baseURL = 'http://localhost:3000/api';
+    }
+
+    async request(endpoint, options = {}) {
+        const url = `${this.baseURL}${endpoint}`;
+        const config = {
+            ...options,
+            headers: {
+                'Content-Type': 'application/json',
+                ...options.headers
+            }
+        };
+
+        try {
+            const response = await fetch(url, config);
+            
+            if (!response.ok) {
+                throw new Error(`HTTP error! status: ${response.status}`);
+            }
+
+            const data = await response.json();
+            return data;
+        } catch (error) {
+            console.error('API request failed:', error);
+            throw error;
+        }
+    }
+
+    // Content Management
+    async getContent(zone = null, type = null) {
+        const params = new URLSearchParams();
+        if (zone) params.append('zone', zone);
+        if (type) params.append('type', type);
+        
+        return this.request(`/content?${params.toString()}`);
+    }
+
+    async uploadContent(formData) {
+        return fetch(`${this.baseURL}/content/upload`, {
+            method: 'POST',
+            body: formData
+        }).then(response => {
+            if (!response.ok) {
+                throw new Error(`Upload failed: ${response.status}`);
+            }
+            return response.json();
+        });
+    }
+
+    async deleteContent(contentId) {
+        return this.request(`/content/${contentId}`, {
+            method: 'DELETE'
+        });
+    }
+
+    // Schedule Management
+    async getSchedule(zone) {
+        return this.request(`/schedule/${zone}`);
+    }
+
+    async createSchedule(scheduleData) {
+        return this.request('/schedule', {
+            method: 'POST',
+            body: JSON.stringify(scheduleData)
+        });
+    }
+
+    // Zones
+    async getZones() {
+        return this.request('/zones');
+    }
+
+    // Weather Data
+    async getWeatherData() {
+        return this.request('/weather');
+    }
+
+    // Analytics
+    async getContentStats() {
+        try {
+            const content = await this.getContent();
+            const stats = {
+                total: content.length,
+                byType: {},
+                byZone: {}
+            };
+
+            content.forEach(item => {
+                // Count by type
+                stats.byType[item.type] = (stats.byType[item.type] || 0) + 1;
+                
+                // Count by zone
+                stats.byZone[item.zone] = (stats.byZone[item.zone] || 0) + 1;
+            });
+
+            return stats;
+        } catch (error) {
+            console.error('Error getting content stats:', error);
+            throw error;
+        }
+    }
+
+    async getScheduleStats() {
+        try {
+            // This would typically be a dedicated endpoint
+            // For now, we'll calculate based on available data
+            const zones = await this.getZones();
+            let totalSchedules = 0;
+            let activeSchedules = 0;
+
+            for (const zone of zones) {
+                const schedule = await this.getSchedule(zone.id);
+                totalSchedules += schedule.length;
+                
+                const now = new Date();
+                const active = schedule.filter(item => {
+                    const start = new Date(item.startTime);
+                    const end = new Date(item.endTime);
+                    return now >= start && now <= end;
+                });
+                activeSchedules += active.length;
+            }
+
+            return {
+                total: totalSchedules,
+                active: activeSchedules,
+                upcoming: totalSchedules - activeSchedules
+            };
+        } catch (error) {
+            console.error('Error getting schedule stats:', error);
+            throw error;
+        }
+    }
+}
+
+// Create global API instance
+window.api = new APIService();