Implement complete Text Mosaic Generator web application with Flask backend and modern frontend

.gitignore

@@ -360,4 +360,28 @@ MigrationBackup/
 .ionide/
 
 # Fody - auto-generated XML schema
-FodyWeavers.xsd
+FodyWeavers.xsd
+
+# CMake build directory
+NeoChatroomCmake/build/
+NeoChatroomCmake/cmake-build-*/
+
+# Python cache
+__pycache__/
+*.pyc
+*.pyo
+*.pyd
+.Python
+env/
+venv/
+.venv/
+pip-log.txt
+pip-delete-this-directory.txt
+.pytest_cache/
+
+# Text Mosaic Application
+text_mosaic/uploads/
+text_mosaic/results/
+text_mosaic/thumbnails/
+text_mosaic/cache/
+text_mosaic/*.db

text_mosaic/DEPLOYMENT.md

@@ -0,0 +1,318 @@
+# Text Mosaic Generator - Deployment Guide
+
+## Production Deployment
+
+### System Requirements
+- **Server**: 2 CPU cores, 4GB RAM minimum
+- **OS**: Ubuntu 20.04+ or similar Linux distribution
+- **Python**: 3.8 or higher
+- **Storage**: At least 10GB free space for uploads and results
+
+### Installation Steps
+
+#### 1. Server Setup
+```bash
+# Update system
+sudo apt update && sudo apt upgrade -y
+
+# Install Python and system dependencies
+sudo apt install python3 python3-pip python3-venv nginx supervisor -y
+sudo apt install libglib2.0-0 libsm6 libxext6 libxrender-dev libgomp1 -y
+```
+
+#### 2. Application Deployment
+```bash
+# Create application user
+sudo useradd -m -s /bin/bash mosaic
+sudo usermod -aG www-data mosaic
+
+# Switch to application user
+sudo su - mosaic
+
+# Clone or copy application files
+git clone <repository-url>
+cd NeoChatroom/text_mosaic
+
+# Create virtual environment
+python3 -m venv venv
+source venv/bin/activate
+
+# Install dependencies
+pip install -r requirements.txt
+
+# Create necessary directories
+mkdir -p logs
+chmod 755 static/uploads static/results static/thumbnails cache
+```
+
+#### 3. Nginx Configuration
+Create `/etc/nginx/sites-available/text-mosaic`:
+
+```nginx
+server {
+    listen 80;
+    server_name your-domain.com;
+
+    client_max_body_size 20M;
+
+    location / {
+        proxy_pass http://127.0.0.1:5000;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    location /static/ {
+        alias /home/mosaic/NeoChatroom/text_mosaic/static/;
+        expires 1d;
+        add_header Cache-Control "public, immutable";
+    }
+}
+```
+
+Enable the site:
+```bash
+sudo ln -s /etc/nginx/sites-available/text-mosaic /etc/nginx/sites-enabled/
+sudo nginx -t
+sudo systemctl reload nginx
+```
+
+#### 4. Supervisor Configuration
+Create `/etc/supervisor/conf.d/text-mosaic.conf`:
+
+```ini
+[program:text-mosaic]
+command=/home/mosaic/NeoChatroom/text_mosaic/venv/bin/python run_server.py
+directory=/home/mosaic/NeoChatroom/text_mosaic
+user=mosaic
+autostart=true
+autorestart=true
+redirect_stderr=true
+stdout_logfile=/home/mosaic/NeoChatroom/text_mosaic/logs/app.log
+environment=HOST="127.0.0.1",PORT="5000",PYTHONPATH="/home/mosaic/NeoChatroom/text_mosaic"
+```
+
+Start the service:
+```bash
+sudo supervisorctl reread
+sudo supervisorctl update
+sudo supervisorctl start text-mosaic
+```
+
+#### 5. SSL/HTTPS Setup (Optional but Recommended)
+```bash
+# Install Certbot
+sudo apt install certbot python3-certbot-nginx -y
+
+# Get SSL certificate
+sudo certbot --nginx -d your-domain.com
+
+# Auto-renewal is usually set up automatically
+sudo crontab -e
+# Add: 0 12 * * * /usr/bin/certbot renew --quiet
+```
+
+### Production Optimizations
+
+#### 1. Gunicorn for Production
+Install Gunicorn:
+```bash
+pip install gunicorn
+```
+
+Update supervisor config to use Gunicorn:
+```ini
+[program:text-mosaic]
+command=/home/mosaic/NeoChatroom/text_mosaic/venv/bin/gunicorn -w 2 -b 127.0.0.1:5000 --timeout 300 app.web_app:app
+directory=/home/mosaic/NeoChatroom/text_mosaic
+user=mosaic
+autostart=true
+autorestart=true
+redirect_stderr=true
+stdout_logfile=/home/mosaic/NeoChatroom/text_mosaic/logs/app.log
+```
+
+#### 2. Database Optimization
+For better performance with many users, consider PostgreSQL:
+```bash
+sudo apt install postgresql postgresql-contrib -y
+pip install psycopg2-binary
+```
+
+Update configuration to use PostgreSQL instead of SQLite.
+
+#### 3. Redis for Task Queue (Optional)
+```bash
+sudo apt install redis-server -y
+pip install celery redis
+```
+
+Implement Celery for background task processing for better scalability.
+
+#### 4. Log Rotation
+Create `/etc/logrotate.d/text-mosaic`:
+```
+/home/mosaic/NeoChatroom/text_mosaic/logs/*.log {
+    daily
+    missingok
+    rotate 30
+    compress
+    delaycompress
+    notifempty
+    copytruncate
+}
+```
+
+#### 5. Monitoring
+Install monitoring tools:
+```bash
+# System monitoring
+sudo apt install htop iotop -y
+
+# Python application monitoring
+pip install psutil
+```
+
+Create monitoring script:
+```python
+#!/usr/bin/env python3
+import psutil
+import json
+import time
+
+def monitor_system():
+    return {
+        'cpu_percent': psutil.cpu_percent(),
+        'memory_percent': psutil.virtual_memory().percent,
+        'disk_usage': psutil.disk_usage('/').percent,
+        'timestamp': time.time()
+    }
+
+if __name__ == '__main__':
+    print(json.dumps(monitor_system()))
+```
+
+### Security Considerations
+
+#### 1. Firewall Setup
+```bash
+sudo ufw allow ssh
+sudo ufw allow 'Nginx Full'
+sudo ufw enable
+```
+
+#### 2. Application Security
+- Keep Python and system packages updated
+- Use strong passwords for any admin interfaces
+- Regularly clean up old files
+- Monitor disk usage
+- Set up fail2ban for protection against brute force
+
+#### 3. File Permissions
+```bash
+# Ensure proper permissions
+chmod 750 /home/mosaic/NeoChatroom/text_mosaic
+chmod 755 static/uploads static/results static/thumbnails
+chmod 644 *.py *.html *.css *.js
+```
+
+### Maintenance
+
+#### 1. Regular Cleanup
+Create cleanup script `/home/mosaic/cleanup.sh`:
+```bash
+#!/bin/bash
+# Clean up files older than 7 days
+find /home/mosaic/NeoChatroom/text_mosaic/static/uploads -mtime +7 -delete
+find /home/mosaic/NeoChatroom/text_mosaic/static/results -mtime +7 -delete
+find /home/mosaic/NeoChatroom/text_mosaic/static/thumbnails -mtime +7 -delete
+
+# Clean up database entries
+cd /home/mosaic/NeoChatroom/text_mosaic
+python3 -c "
+import sqlite3
+import time
+cutoff = time.time() - (7 * 24 * 3600)
+conn = sqlite3.connect('app/mosaic_app.db')
+conn.execute('DELETE FROM generation_history WHERE created_at < ?', (cutoff,))
+conn.execute('DELETE FROM uploads WHERE uploaded_at < datetime(?, \"unixepoch\")', (cutoff,))
+conn.commit()
+"
+```
+
+Set up cron job:
+```bash
+crontab -e
+# Add: 0 2 * * * /home/mosaic/cleanup.sh
+```
+
+#### 2. Backup Strategy
+```bash
+#!/bin/bash
+# Backup script
+DATE=$(date +%Y%m%d_%H%M%S)
+BACKUP_DIR="/home/mosaic/backups"
+mkdir -p $BACKUP_DIR
+
+# Backup database
+cp /home/mosaic/NeoChatroom/text_mosaic/app/mosaic_app.db $BACKUP_DIR/db_$DATE.db
+
+# Backup important files (optional, if you want to keep results)
+tar -czf $BACKUP_DIR/results_$DATE.tar.gz /home/mosaic/NeoChatroom/text_mosaic/static/results/
+
+# Clean old backups (keep 30 days)
+find $BACKUP_DIR -mtime +30 -delete
+```
+
+### Troubleshooting
+
+#### Common Issues
+1. **High memory usage**: Reduce concurrent workers or image sizes
+2. **Disk space full**: Check cleanup scripts are running
+3. **Application not starting**: Check logs in `/home/mosaic/NeoChatroom/text_mosaic/logs/`
+4. **Upload errors**: Check file permissions and disk space
+5. **Generation failures**: Check Python dependencies and log files
+
+#### Log Locations
+- Application logs: `/home/mosaic/NeoChatroom/text_mosaic/logs/app.log`
+- Nginx logs: `/var/log/nginx/access.log` and `/var/log/nginx/error.log`
+- System logs: `/var/log/syslog`
+
+#### Health Check Endpoint
+Add to your web app:
+```python
+@app.route('/health')
+def health_check():
+    return jsonify({
+        'status': 'healthy',
+        'timestamp': time.time(),
+        'uptime': time.time() - start_time
+    })
+```
+
+### Performance Tuning
+
+#### For 2C4G Servers
+- Set `MAX_WORKERS=2` in config
+- Use Gunicorn with 2 workers
+- Monitor memory usage closely
+- Implement file size limits strictly
+- Use efficient image processing settings
+
+#### Memory Optimization
+```python
+# In config.py
+import psutil
+
+# Auto-adjust workers based on available memory
+available_memory_gb = psutil.virtual_memory().total / (1024**3)
+if available_memory_gb < 6:
+    MAX_WORKERS = 1
+    MAX_CONCURRENT_TASKS = 2
+else:
+    MAX_WORKERS = 2
+    MAX_CONCURRENT_TASKS = 5
+```
+
+This deployment guide ensures the text mosaic application runs efficiently and securely in a production environment optimized for 2C4G server configurations.