events {
    worker_connections 1024;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    sendfile on;
    keepalive_timeout 65;
    client_max_body_size 512M;

    limit_req_zone $binary_remote_addr zone=api:10m rate=60r/m;
    limit_req_zone $binary_remote_addr zone=upload:10m rate=10r/m;

    upstream backend {
        server backend:8000;
        keepalive 32;
    }

    upstream frontend {
        server frontend:80;
    }

    server {
        listen 80;
        server_name _;

        location /api/upload/ {
            limit_req zone=upload burst=5 nodelay;
            proxy_pass http://backend/api/upload/;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_read_timeout 600s;
            proxy_send_timeout 600s;
            client_max_body_size 512M;
        }

        location /api/ {
            limit_req zone=api burst=20 nodelay;
            proxy_pass http://backend/api/;
            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_read_timeout 300s;
        }

        location /health {
            proxy_pass http://backend/health;
            proxy_set_header Host $host;
        }

        location / {
            proxy_pass http://frontend;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
        }
    }
}