server {
    listen 7860;

    root /usr/share/nginx/html;
    index index.html;
    client_max_body_size 100M;
    location / {
        try_files $uri $uri/ /index.html;
    }

    location /v1/ {
        # Handle CORS preflight to avoid 405 from upstream
        if ($request_method = OPTIONS) {
            add_header Access-Control-Allow-Origin *;
            add_header Access-Control-Allow-Methods "GET, POST, OPTIONS";
            add_header Access-Control-Allow-Headers "Authorization, Content-Type, Accept, Origin, User-Agent";
            add_header Access-Control-Max-Age 3600;
            return 204;
        }

        proxy_pass https://tokyotechlab-be.hf.space/v1/;
        proxy_set_header Host tokyotechlab-be.hf.space;
        proxy_set_header Authorization "Bearer $HF_API_TOKEN";
        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_http_version 1.1;
        proxy_set_header Connection "";
        proxy_buffering off;
        proxy_read_timeout 10000s;

        # CORS headers on proxied responses
        add_header Access-Control-Allow-Origin *;
        add_header Access-Control-Allow-Methods "GET, POST, OPTIONS";
        add_header Access-Control-Allow-Headers "Authorization, Content-Type, Accept, Origin, User-Agent";
    }
}