# ==============================================================================
# CheckIn App V2 - Nginx Configuration Example (HTTP Only)
# ==============================================================================
#
# Usage:
#   1. Copy this file: sudo cp nginx.conf.example /etc/nginx/sites-available/checkin-app
#   2. Edit the file and replace placeholders with your actual values
#   3. Create symlink: sudo ln -s /etc/nginx/sites-available/checkin-app /etc/nginx/sites-enabled/
#   4. Test config: sudo nginx -t
#   5. Reload Nginx: sudo systemctl reload nginx
#
# ==============================================================================

# HTTP Server - Production Configuration
server {
    listen 80;
    listen [::]:80;
    server_name your-domain.com;  # CHANGE THIS: Replace with your domain or IP

    # CHANGE THIS: Replace with your actual frontend build path
    root /var/www/checkin-app;
    index index.html;

    # Access and Error Logs
    access_log /var/log/nginx/checkin-app-access.log;
    error_log /var/log/nginx/checkin-app-error.log;

    # Gzip Compression
    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_types text/plain text/css text/xml text/javascript
               application/x-javascript application/xml+rss
               application/json application/javascript;

    # Client body size (for file uploads)
    client_max_body_size 10M;

    # ==========================================
    # API Proxy Configuration
    # ==========================================
    location /api/ {
        # Proxy to backend FastAPI server
        proxy_pass http://127.0.0.1:8000;

        # Proxy headers
        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;

        # HTTP version and buffering
        proxy_http_version 1.1;
        proxy_buffering off;
        proxy_request_buffering off;

        # Timeouts
        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
    }

    # API Documentation endpoints
    location ~ ^/(docs|redoc|openapi.json|health) {
        proxy_pass http://127.0.0.1:8000;
        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;
    }

    # ==========================================
    # Frontend Static Files
    # ==========================================

    # Cache static assets (JS, CSS, images, fonts)
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
        try_files $uri =404;
    }

    # Frontend routes (SPA - Single Page Application)
    location / {
        try_files $uri $uri/ /index.html;
        add_header Cache-Control "no-cache, no-store, must-revalidate";
    }

    # Favicon
    location = /favicon.ico {
        log_not_found off;
        access_log off;
    }

    # Robots.txt
    location = /robots.txt {
        log_not_found off;
        access_log off;
    }
}

# ==============================================================================
# HTTPS Configuration (Currently Commented Out)
# ==============================================================================
# Uncomment and configure below when you need HTTPS with SSL certificate
#
# server {
#     listen 80;
#     listen [::]:80;
#     server_name your-domain.com;
#
#     # Redirect HTTP to HTTPS
#     return 301 https://$server_name$request_uri;
# }
#
# server {
#     listen 443 ssl http2;
#     listen [::]:443 ssl http2;
#     server_name your-domain.com;
#
#     # SSL Certificate (use Let's Encrypt: certbot --nginx)
#     ssl_certificate /etc/letsencrypt/live/your-domain.com/fullchain.pem;
#     ssl_certificate_key /etc/letsencrypt/live/your-domain.com/privkey.pem;
#
#     # SSL Configuration
#     ssl_protocols TLSv1.2 TLSv1.3;
#     ssl_ciphers 'ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256';
#     ssl_prefer_server_ciphers off;
#     ssl_session_cache shared:SSL:10m;
#     ssl_session_timeout 10m;
#
#     # Security Headers
#     add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
#     add_header X-Frame-Options "SAMEORIGIN" always;
#     add_header X-Content-Type-Options "nosniff" always;
#
#     # CHANGE THIS: Replace with your actual frontend build path
#     root /path/to/CheckInApp/frontend/dist;
#     index index.html;
#
#     # ... (rest of the configuration same as HTTP version above)
# }