map $http_upgrade $connection_upgrade {
    default upgrade;
    '' close;
}

# XXX Preserve the public HTTPS scheme when an outer reverse proxy terminates TLS.
# XXX If the outer proxy does not send X-Forwarded-Proto, this falls back to this container's scheme.
# XXX For fixed public-HTTPS appliance packages, override the /api proxy header to "https".
map $http_x_forwarded_proto $proxy_x_forwarded_proto {
    default $http_x_forwarded_proto;
    '' $scheme;
}

server {
    listen 80;
    server_name localhost;
    client_max_body_size 100m;
    root /usr/share/nginx/html;
    index index.html;

    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

    location / {
        try_files $uri $uri/ /index.html;
    }

    location /api/ {
        proxy_pass http://api:3100/api/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        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 $proxy_x_forwarded_proto;
    }

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

server {
    listen 443 ssl;
    server_name localhost;
    client_max_body_size 100m;
    root /usr/share/nginx/html;
    index index.html;

    ssl_certificate /etc/nginx/certs/surclaw-demo.crt;
    ssl_certificate_key /etc/nginx/certs/surclaw-demo.key;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 10m;

    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

    location / {
        try_files $uri $uri/ /index.html;
    }

    location /api/ {
        proxy_pass http://api:3100/api/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        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 $proxy_x_forwarded_proto;
    }

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