# HTTP redirect to HTTPS
server {
    listen 80;
    server_name datapointer.cnroc.cn localhost _;
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl;
    server_name datapointer.cnroc.cn localhost _;
    root /usr/share/nginx/html;
    index index.html;

    # SSL certificates
    ssl_certificate /etc/nginx/ssl/fullchain.pem;
    ssl_certificate_key /etc/nginx/ssl/privkey.pem;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers HIGH:!aNULL:!MD5;
    ssl_prefer_server_ciphers on;

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

    # Frontend static files
    location / {
        try_files $uri $uri/ /index.html;
    }

    # API proxy to backend
    location /api/ {
        proxy_pass http://backend:8000/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_connect_timeout 30s;
        proxy_send_timeout 30s;
        proxy_read_timeout 30s;
    }

    # Health check endpoint
    location /health {
        proxy_pass http://backend:8000/health;
    }

    # Cache static assets + CORS for crossorigin attribute
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
        expires 30d;
        add_header Cache-Control "public, immutable";
        add_header Access-Control-Allow-Origin * always;
    }
}
