server {
    listen 8080;
    server_name _;
    location = /nginx-health/live { access_log off; return 200 "ok\n"; }
}

server {
    listen 80;
    server_name ${PUBLIC_HOST};
    location ^~ /.well-known/acme-challenge/ {
        root /var/www/certbot;
        default_type text/plain;
    }
    location / { return 308 https://$host$request_uri; }
}

server {
    listen 443 ssl;
    http2 on;
    server_name ${PUBLIC_HOST};
    ssl_certificate ${NGINX_TLS_CERTIFICATE};
    ssl_certificate_key ${NGINX_TLS_CERTIFICATE_KEY};
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers HIGH:!aNULL:!MD5:!3DES;
    ssl_session_cache shared:TLS:10m;
    ssl_session_timeout 1d;
    ssl_session_tickets off;

    include /etc/nginx/generated/security-headers.conf;
    error_page 429 = @rate_limited;

    location @rate_limited {
        add_header Retry-After "1" always;
        add_header X-Request-ID $edge_request_id always;
        include /etc/nginx/generated/security-headers.conf;
        return 429;
    }

    location = /nginx-health/live { access_log off; return 200 "ok\n"; }
    location ^~ /internal/ { return 404; }
    location ^~ /_internal/ { return 404; }
    location = /metrics { return 404; }
    location = /nginx_status { return 404; }
    location ~* /(?:\.env|docker-compose|config\.(?:json|ya?ml))$ { return 404; }
    location ~ /\. { return 404; }

    location = /api/v1/realtime {
        limit_req zone=ws_connect burst=5 nodelay;
        limit_conn connections 10;
        include /etc/nginx/snippets/proxy-common.conf;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        proxy_set_header Sec-WebSocket-Protocol $http_sec_websocket_protocol;
        proxy_buffering off;
        proxy_cache off;
        proxy_read_timeout 90s;
        proxy_send_timeout 30s;
        proxy_pass http://api_backend;
    }

    location ~ ^/api/v1/dialogs/[0-9a-fA-F-]+/messages$ {
        limit_req zone=api burst=20 nodelay;
        limit_req zone=polling burst=20 nodelay;
        include /etc/nginx/snippets/proxy-common.conf;
        proxy_read_timeout ${NGINX_MESSAGE_READ_TIMEOUT_SEC}s;
        proxy_pass http://api_backend;
    }

    location = /api/v1/public/app-config {
        limit_req zone=public burst=20 nodelay;
        include /etc/nginx/snippets/proxy-common.conf;
        proxy_cache public_cache;
        proxy_cache_methods GET HEAD;
        proxy_cache_bypass $http_authorization;
        proxy_no_cache $http_authorization $upstream_http_set_cookie;
        proxy_cache_valid 200 1h;
        proxy_pass http://api_backend;
    }
    location = /api/v1/public/content {
        limit_req zone=public burst=20 nodelay;
        include /etc/nginx/snippets/proxy-common.conf;
        proxy_cache public_cache;
        proxy_cache_methods GET HEAD;
        proxy_cache_bypass $http_authorization;
        proxy_no_cache $http_authorization $upstream_http_set_cookie;
        proxy_cache_valid 200 1h;
        proxy_pass http://api_backend;
    }
    location ~ ^/api/v1/(?:documents|dialogs)/.+/download-url$ {
        limit_req zone=downloads burst=10 nodelay;
        include /etc/nginx/snippets/proxy-common.conf;
        proxy_pass http://api_backend;
    }
    location ^~ /api/ {
        limit_req zone=api burst=30 nodelay;
        include /etc/nginx/snippets/proxy-common.conf;
        proxy_pass http://api_backend;
    }

    location ^~ /auth/ {
        limit_req zone=auth burst=10;
        include /etc/nginx/snippets/proxy-common.conf;
        proxy_read_timeout 60s;
        proxy_pass http://keycloak_upstream;
    }

    location = /bitrix/handler {
        limit_req zone=bitrix_callbacks burst=60 nodelay;
        include /etc/nginx/snippets/proxy-common.conf;
        proxy_read_timeout 60s;
        proxy_buffering off;
        proxy_pass http://bitrix_local;
    }
    location = /bitrix/install {
        limit_req zone=bitrix_callbacks burst=30 nodelay;
        include /etc/nginx/snippets/proxy-common.conf;
        proxy_read_timeout 60s;
        proxy_pass http://bitrix_local;
    }
    location = /bitrix/placement {
        limit_req zone=bitrix_callbacks burst=30 nodelay;
        proxy_http_version 1.1;
        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 https;
        proxy_set_header X-Request-ID $edge_request_id;
        add_header X-Request-ID $edge_request_id always;
        add_header X-Content-Type-Options "nosniff" always;
        add_header Referrer-Policy "strict-origin-when-cross-origin" always;
        add_header Content-Security-Policy "default-src 'self'; frame-ancestors ${BITRIX_FRAME_ANCESTORS}" always;
        proxy_pass http://bitrix_local;
    }
    location ^~ /bitrix/ { return 404; }

    include /etc/nginx/generated/frontend-location.conf;
}