# Rate limiting zones
limit_req_zone $binary_remote_addr zone=tile_limit:10m rate=100r/s;
limit_req_zone $binary_remote_addr zone=api_limit:10m rate=30r/s;

server {
    listen 80;
    server_name localhost;

    # Gzip compression for better performance
    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

    location / {
        root /usr/share/nginx/html;
        index index.html;
        try_files $uri $uri/ /index.html;
    }

    # Proxy API requests to the api service in docker
    location /api/ {
        limit_req zone=api_limit burst=20 nodelay;
        proxy_pass http://api:3200/api/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }

    # Proxy Martin Vector Tiles (if accessed via dashboard directly)
    location /tiles/ {
        limit_req zone=tile_limit burst=50 nodelay;
        proxy_pass http://martin:3000/;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        
        # Cache tiles for performance
        add_header Cache-Control "public, max-age=3600";
    }

    error_page 500 502 503 504 /50x.html;
    location = /50x.html {
        root /usr/share/nginx/html;
    }
}