user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;

events {
    worker_connections 1024;
}

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

    log_format main '$remote_addr - $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent "$http_referer" '
                    '"$http_user_agent"';
    access_log /var/log/nginx/access.log main;

    sendfile on;
    keepalive_timeout 65;

    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml;

    server {
        listen 80;
        server_name _;

        root /usr/share/nginx/html;
        index index.html;

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

        # Proxy API → backend Go
        location /api/ {
            proxy_pass http://backend:3001;
            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 300s;
        }

        # Proxy WebSocket → backend Go
        location /ws/ {
            proxy_pass http://backend:3001;
            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_read_timeout 3600s;
            proxy_send_timeout 3600s;
        }

        # URLs propres : /dashboard → /dashboard.html
        location / {
            try_files $uri $uri.html $uri/ /index.html;
        }
    }
}