server {
    listen 443 ssl;
    server_name _;
    server_tokens off;
    client_max_body_size 1m;

    ssl_certificate     /etc/nginx/tls/tls.crt;
    ssl_certificate_key /etc/nginx/tls/tls.key;
    ssl_protocols TLSv1.2 TLSv1.3;

    add_header X-Frame-Options "DENY" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header Referrer-Policy "no-referrer" always;
    add_header Permissions-Policy "camera=(), microphone=(), geolocation=()" always;
    add_header Content-Security-Policy "default-src 'self'; base-uri 'self'; frame-ancestors 'none'; object-src 'none'; form-action 'self'; connect-src 'self'; img-src 'self' data:; style-src 'self' 'unsafe-inline'; script-src 'self'" always;

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

    error_page 401 = /oauth2/sign_in?rd=https://$http_host$request_uri;

    location = /oauth2/auth {
        internal;
        proxy_pass http://oauth2-proxy:4180/oauth2/auth;
        proxy_pass_request_body off;
        proxy_set_header Content-Length "";
        proxy_set_header X-Original-URI $request_uri;
        proxy_set_header X-Auth-Request-Redirect https://$http_host$request_uri;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-Proto https;
        proxy_set_header X-Forwarded-Host $http_host;
    }

    location /oauth2/ {
        proxy_pass http://oauth2-proxy:4180;
        proxy_set_header Host $http_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-Proto https;
        proxy_set_header X-Forwarded-Host $http_host;
    }

    location /api/v1/ {
        auth_request /oauth2/auth;
        auth_request_set $auth_user $upstream_http_x_auth_request_user;
        auth_request_set $auth_groups $upstream_http_x_auth_request_groups;
        auth_request_set $auth_access_token $upstream_http_x_auth_request_access_token;

        proxy_pass         http://control-panel-api:3010/api/v1/;
        proxy_http_version 1.1;
        proxy_buffering    off;
        proxy_cache        off;
        proxy_read_timeout 360s;
        proxy_send_timeout 360s;
        proxy_set_header   Host              $http_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 https;

        # Remove every caller-supplied identity assertion. The API derives
        # actor/role/scope only after cryptographic JWT verification.
        proxy_set_header   X-CASAN-Actor     "";
        proxy_set_header   X-CASAN-Groups    "";
        proxy_set_header   X-CASAN-Role      "";
        proxy_set_header   X-CASAN-Project   "";
        proxy_set_header   X-CASAN-Tenant    "";
        proxy_set_header   X-Forwarded-User  "";
        proxy_set_header   X-Forwarded-Groups "";
        proxy_set_header   Authorization     "Bearer $auth_access_token";
    }

    location = /healthz {
        auth_request /oauth2/auth;
        auth_request_set $auth_access_token $upstream_http_x_auth_request_access_token;
        proxy_pass http://control-panel-api:3010/healthz;
        proxy_set_header Authorization "Bearer $auth_access_token";
    }

    location / {
        auth_request /oauth2/auth;
        try_files $uri $uri/ /index.html;
    }
}