# ServerKit Frontend Nginx Configuration
server {
    listen 80;
    server_name localhost;
    root /usr/share/nginx/html;
    index index.html;

    # Gzip compression
    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_proxied any;
    gzip_types text/plain text/css text/xml text/javascript application/javascript application/json application/xml;

    # Security headers
    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;

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

    # Proxy API requests to the backend, which runs on the HOST (systemd), not
    # in Docker. `backend` resolves to the host via the compose `extra_hosts:
    # ["backend:host-gateway"]` alias (see docker-compose.yml).
    location /api {
        proxy_pass http://backend:5000;
        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;

        # Timeout settings
        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
    }

    # WebSocket support for socket.io (running on host, not in Docker)
    location /socket.io {
        proxy_pass http://backend:5000;
        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;

        # WebSocket specific timeouts
        proxy_connect_timeout 7d;
        proxy_send_timeout 7d;
        proxy_read_timeout 7d;
    }

    # Runtime-extension vendor shims (/serverkit-vendor/*.mjs). nginx builds
    # without an `.mjs` MIME entry serve application/octet-stream, which the
    # browser refuses to import as an ES module and every runtime-loaded
    # extension fails with "Failed to fetch dynamically imported module".
    # Force the type; the shims are not hashed, so they must revalidate.
    # Anchored to the shim folder: a bare `\.mjs$` regex would also capture
    # /api/v1/plugins/<slug>/assets/dist/index.mjs (regex locations beat the
    # /api prefix block) and 404 every extension bundle instead.
    location ~* ^/serverkit-vendor/.+\.mjs$ {
        types { }
        default_type text/javascript;
        try_files $uri =404;
        expires -1;
    }

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

# HTTPS server - DISABLED for development (requires SSL certificates)
# To enable: mount SSL certs to /etc/nginx/ssl/ and uncomment this block
# server {
#     listen 443 ssl http2;
#     server_name localhost;
#     root /usr/share/nginx/html;
#     index index.html;
#
#     # SSL Configuration
#     ssl_certificate /etc/nginx/ssl/fullchain.pem;
#     ssl_certificate_key /etc/nginx/ssl/privkey.pem;
#     ssl_session_timeout 1d;
#     ssl_session_cache shared:SSL:50m;
#     ssl_session_tickets off;
#
#     # Modern SSL configuration
#     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;
#
#     # HSTS
#     add_header Strict-Transport-Security "max-age=63072000; includeSubDomains" always;
#
#     # Security headers
#     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;
#
#     # Gzip compression
#     gzip on;
#     gzip_vary on;
#     gzip_min_length 1024;
#     gzip_proxied any;
#     gzip_types text/plain text/css text/xml text/javascript application/javascript application/json application/xml;
#
#     # SPA routing
#     location / {
#         try_files $uri $uri/ /index.html;
#     }
#
#     # API proxy
#     location /api {
#         proxy_pass http://backend:5000;
#         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_connect_timeout 60s;
#         proxy_send_timeout 60s;
#         proxy_read_timeout 60s;
#     }
#
#     # WebSocket proxy
#     location /socket.io {
#         proxy_pass http://backend:5000;
#         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 $scheme;
#         proxy_connect_timeout 7d;
#         proxy_send_timeout 7d;
#         proxy_read_timeout 7d;
#     }
#
#     # Cache static assets
#     location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
#         expires 1y;
#         add_header Cache-Control "public, immutable";
#     }
# }