# ============================================
# BDW COOPERATIVE - NGINX CONFIGURATION
# Reverse proxy with SSL, caching, security
# ============================================

upstream bdw_api {
    least_conn;
    server 127.0.0.1:3000;
    server 127.0.0.1:3001;
    server 127.0.0.1:3002;
    server 127.0.0.1:3003;
    keepalive 32;
}

server {
    listen 80;
    server_name behinddwheel.com www.behinddwheel.com;
    
    # Redirect to HTTPS
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl http2;
    server_name behinddwheel.com www.behinddwheel.com;

    # SSL Configuration
    ssl_certificate /etc/letsencrypt/live/behinddwheel.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/behinddwheel.com/privkey.pem;
    ssl_session_timeout 1d;
    ssl_session_cache shared:SSL:50m;
    ssl_session_tickets off;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384;
    ssl_prefer_server_ciphers off;
    ssl_stapling on;
    ssl_stapling_verify on;

    # Security Headers
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;
    add_header X-Frame-Options "DENY" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
    add_header Permissions-Policy "camera=(), microphone=(), geolocation=()" always;

    # Rate Limiting
    limit_req_zone $binary_remote_addr zone=api:10m rate=30r/m;
    limit_req_zone $binary_remote_addr zone=login:10m rate=5r/m;

    # Gzip Compression
    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_min_length 1024;
    gzip_types text/plain text/css text/xml text/javascript application/json application/javascript application/xml+rss application/rss+xml font/truetype font/opentype application/vnd.ms-fontobject image/svg+xml;

    # Root directory
    root /var/www/behinddwheel.com/client;
    index index.html index.php;

    # Static files - direct serve with caching
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
        add_header Vary "Accept-Encoding";
        try_files $uri =404;
    }

    # HTML files - short cache
    location ~* \.html$ {
        expires 5m;
        add_header Cache-Control "public";
        try_files $uri =404;
    }

    # API endpoints - proxy to Node.js
    location /api/ {
        # Rate limiting for API
        limit_req zone=api burst=10 nodelay;
        
        proxy_pass http://bdw_api;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        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;
        proxy_set_header X-Request-ID $request_id;
        proxy_cache_bypass $http_upgrade;
        
        # Timeouts
        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
        
        # Buffering
        proxy_buffering on;
        proxy_buffer_size 4k;
        proxy_buffers 8 16k;
    }

    # Auth endpoints - stricter rate limiting
    location /api/auth/login {
        limit_req zone=login burst=3 nodelay;
        proxy_pass http://bdw_api;
        proxy_http_version 1.1;
        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;
    }

    # Payment webhooks - no rate limiting
    location /api/payments/webhook/ {
        proxy_pass http://bdw_api;
        proxy_http_version 1.1;
        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;
        proxy_read_timeout 30s;
    }

    # PHP files (if using PHP alongside Node.js)
    location ~ \.php$ {
        try_files $uri =404;
        fastcgi_pass unix:/var/run/php/php8.1-fpm.sock;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
    }

    # SPA fallback - serve index.html for all other routes
    location / {
        try_files $uri $uri/ /index.html;
    }

    # Deny access to hidden files
    location ~ /\. {
        deny all;
        access_log off;
        log_not_found off;
    }

    # Deny access to sensitive files
    location ~* (\.env|composer\.json|composer\.lock|package\.json|package-lock\.json)$ {
        deny all;
        access_log off;
        log_not_found off;
    }
}