# Replace every chat.example.com with your actual domain before installing.
# Install only after the certificate and .baiyue-preview.htpasswd exist.
server {
    listen 80;
    listen [::]:80;
    server_name chat.example.com;

    location ^~ /.well-known/acme-challenge/ {
        root /var/www/letsencrypt;
        try_files $uri =404;
    }

    location / {
        return 301 https://$host$request_uri;
    }
}

server {
    listen 443 ssl;
    listen [::]:443 ssl;
    server_name chat.example.com;

    ssl_certificate /etc/letsencrypt/live/chat.example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/chat.example.com/privkey.pem;
    ssl_protocols TLSv1.2 TLSv1.3;

    # Staff and unknown routes remain protected; guest APIs check their own visitor owner.
    auth_basic "Baiyue private acceptance";
    auth_basic_user_file /etc/nginx/.baiyue-preview.htpasswd;

    # Allow multipart overhead around the application's 10 MiB file limit.
    client_max_body_size 12m;

    proxy_http_version 1.1;
    proxy_set_header Connection "";
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $remote_addr;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header Authorization "";
    proxy_buffering off;
    proxy_cache off;
    gzip off;
    proxy_read_timeout 300s;
    proxy_send_timeout 300s;

    location = / { auth_basic off; proxy_pass http://127.0.0.1:5000; }
    location ^~ /static/ { auth_basic off; proxy_pass http://127.0.0.1:5000; }
    location ^~ /uploads/ { auth_basic off; proxy_pass http://127.0.0.1:5000; }
    location ~ ^/(?:healthz|stream_chat|api/(?:visitor/(?:session|human/(?:request|poll|send|close))|customer/(?:session|login|logout)|new_chat|get_history|get_messages|del_history|clear_all|upload|ticket|rate|feedback|speech/(?:config|transcribe)))$ {
        auth_basic off;
        proxy_pass http://127.0.0.1:5000;
    }
    location / { proxy_pass http://127.0.0.1:5000; }
}