--
-- (C) 2013-24 - ntop.org
--

require "os"
require "lua_utils"

local ts_utils = require("ts_utils_core")

local template = require "template_utils"
local stats_utils = require("stats_utils")
local page_utils = require "page_utils"
local have_nedge = ntop.isnEdge()
local info = ntop.getInfo(true)
local is_admin = isAdministrator()
local maxSpeed

local ifid = interface.getId()
local _ifstats = interface.getStats()

if not interface.isPcapDumpInterface() and not have_nedge then
   -- if the speed in not custom we try to read the speed from the interface
   -- and, as a final resort, we use 1Gbps
   if tonumber(_ifstats.speed) ~= nil then
      maxSpeed = tonumber(_ifstats.speed) * 1e6
   else
      maxSpeed = 1000000000 -- 1 Gbit
   end
end -- closes interface.isPcapDumpInterface() == false

if not info.oem then

-- print ([[
-- <hr>
-- <footer id="n-footer">
-- 	<div class="container-fluid">
-- 		<div class="row mt-2">
-- 			<div class="col-12 col-md-4 pl-md-0 text-center text-md-start">
-- 				<small>
-- 					<a href="https://www.ntop.org/products/traffic-analysis/ntop/" target="_blank">
-- 				  		]] .. getNtopngRelease(info) ..[[
-- 					</a>
-- 				</small>
-- 			</div>
-- 			<div class="col-12 col-md-4 text-center">
-- 				<small>]].. ntop.getInfo()["copyright"] ..[[</small>
-- ]])
-- print [[
-- 			</div>
-- 			<div class="col-12 col-md-4 text-center text-md-end pr-md-0">
-- 				<small>
-- 						<i class="fas fa-clock" title="]] print(i18n("about.server_time")) print[["></i> <div class="d-inline-block" id='network-clock'></div> ]] if(info.tzname ~= nil) then print(info.tzname) end print(" | ") print(i18n("about.uptime")) print[[: <div class="d-inline-block" id='network-uptime'></div>
-- 				</small>
-- 			</div>
--      	</div>
--    </div>
-- </footer>
-- ]]

-- else -- info.oem
--   print[[<div class="col-12 text-end">
--     <small>
-- 		<i class="fas fa-clock"></i> <div class="d-inline-block" id='network-clock' title="]] print(i18n("about.server_time")) print[["></div> | ]] print(i18n("about.uptime")) print[[: <div class="d-inline-block" id='network-uptime'></div>
--     </small>
-- </div>]]
end

local traffic_peity_width = "96"

if ts_utils.getDriverName() == "influxdb" then

   local msg = ntop.getCache("ntopng.cache.influxdb.last_error")
   if not isEmptyString(msg) then
	print([[
		<script type="text/javascript">
			$("#influxdb-error-msg-text").html("]].. (msg:gsub('"', '\\"')) ..[[");
			$("#influxdb-error-msg").show();
		</script>
	]])
   end
end

-- Dismiss Notification Code and Toggle Dark theme
print([[
	<script type='text/javascript'>
		$(document).ready(function() {

			$(`.notification button.dismiss`).click(function() {
				const $toast = $(this).parents('.notification');
				const id = $toast.data("toastId");
				ToastUtils.dismissToast(id, "]].. ntop.getRandomCSRFValue() ..[[", (data) =>{
					if (data.success) $toast.toast('hide');
				});
			});

			$(`.toggle-dark-theme`).click(function() {
				const request = $.post(`]].. ntop.getHttpPrefix() ..[[/lua/update_prefs.lua`, {
					action: 'toggle_theme', toggle_dark_theme: ]].. tostring(not page_utils.is_dark_mode_enabled()) ..[[,
					csrf: "]].. ntop.getRandomCSRFValue() ..[["
				});
				request.done(function(res) {
					if (res.success) location.reload();
				});
			});
		});
	</script>
]])

-- Restart product code
if (is_admin and ntop.isPackage() and not ntop.isWindows()) then

	print(template.gen("modal_confirm_dialog.html", {
		dialog = {
			id = 'restart-modal',
			action = 'restartService()',
			title = i18n("restart.restart_product", {product=info.product}),
			message = i18n("restart.confirm", {product=info.product}),
			custom_alert_class = 'alert alert-danger',
			confirm = i18n('restart.restart'),
			confirm_button = 'btn-danger'
		}
	}))



	print[[
		<script type="text/javascript">

		 const restartCSRF = ']] print(ntop.getRandomCSRFValue()) print[[';
		 const restartService = function() {
			 $.ajax({
			   type: 'POST',
			   url: ']] print (ntop.getHttpPrefix()) print [[/lua/admin/service_restart.lua',
			   data: {
				 csrf: restartCSRF
			   },
			   success: function(rsp) {
				 alert("]] print(i18n("restart.restarting", {product=info.product})) print[[");
				 $('#restart-modal').modal('hide');
			   }
			 });
		 }

		 $('.restart-service').click(() => {
			$('#restart-modal').modal('show');
		 });

	   </script>
	]]
end


-- render switchable system view
print([[
	<script type="text/javascript">

		$(document).ready(function() {

			// ignore scientific numbers input
			$(`.ignore-scientific`).keypress(function(e) {
				if (e.which != 8 && e.which != 0 && e.which < 48 || e.which > 57) {
					e.preventDefault();
				}
			})

			ToastUtils.initToasts();
		});

	   const toggleSystemInterface = ($form = null) => {
			if($form != null) {
				$form.submit(); 				
			}
			else {
				console.error("An error has occurred when switching interface!");
			}
	   }
	]])
print([[
	</script>
]])

print [[
<script type="text/javascript">
]]

print[[
var is_historical = false;
let updatingChart_uploads = [
	$("#n-navbar .network-load-chart-upload").show().peity("line", { width: ]] print(traffic_peity_width) print[[, max: null }),
	$(".mobile-menu-stats .network-load-chart-upload").show().peity("line", { width: ]] print(traffic_peity_width) print[[, max: null }),
];
let updatingChart_downloads = [
	$("#n-navbar .network-load-chart-download").show().peity("line", { width: ]] print(traffic_peity_width) print[[, max: null, fill: "lightgreen"}),
	$(".mobile-menu-stats .network-load-chart-download").show().peity("line", { width: ]] print(traffic_peity_width) print[[, max: null, fill: "lightgreen"})
];
let updatingChart_totals = [
	$("#n-navbar .network-load-chart-total").show().peity("line", { width: ]] print(traffic_peity_width) print[[, max: null}),
	$(".mobile-menu-stats .network-load-chart-total").show().peity("line", { width: ]] print(traffic_peity_width) print[[, max: null})
];

$(`.copy-http-url`).on('click', function() {
  let sampleTextarea = document.createElement("textarea");
  document.body.appendChild(sampleTextarea);
  sampleTextarea.value = $(this).attr('data-to-copy');
  sampleTextarea.select(); //select textarea content
  document.execCommand("copy");
  document.body.removeChild(sampleTextarea);
})

let isFooterRefreshInProcess = false;
const footerRefresh = function() {
	if (isFooterRefreshInProcess == true) { return; }
	isFooterRefreshInProcess = true;
	$.ajax({
		type: 'GET',
		url: ']]print (ntop.getHttpPrefix()) print [[/lua/rest/v2/get/interface/data.lua',
		data: { ifid: ]] print(tostring(ifid)) print[[, type: 'summary' },
		success: function(content) {
			isFooterRefreshInProcess = false;
			if(content["rc_str"] != "OK") {
				return;
			}

			const rsp = content["rsp"];

      try {
ntopng_events_manager.emit_custom_event(ntopng_custom_events.GET_INTERFACE_DATA, rsp);
        let bps_upload = rsp.throughput.upload * 8;
        let bps_download = rsp.throughput.download * 8;

        /* Upload chart */
        let values = updatingChart_uploads[0].text().split(",")
        values.shift();
        values.push(bps_upload.toString());
        updatingChart_uploads[0].text(values.join(",")).change();
        updatingChart_uploads[1].text(values.join(",")).change();
        $('.chart-upload-text:visible').html(NtopUtils.bitsToSize(bps_upload, 1000));
        
        /* Download chart */
        values = updatingChart_downloads[0].text().split(",")
        values.shift();
        values.push((-bps_download).toString());
        updatingChart_downloads[0].text(values.join(",")).change();
        updatingChart_downloads[1].text(values.join(",")).change();
        $('.chart-download-text:visible').html(NtopUtils.bitsToSize(bps_download, 1000));

        /* Disaggregate interface chart */
        values = updatingChart_totals[0].text().split(",")
        values.shift();
        values.push(rsp.throughput_bps * 8);
        updatingChart_totals[0].text(values.join(",")).change();
        updatingChart_totals[1].text(values.join(",")).change();
  ]]

if (interface.isPcapDumpInterface() == false) and (not have_nedge) then
   print[[
        const v = Math.round(Math.min((rsp.throughput_bps * 8 *100)/]] print(string.format("%u", maxSpeed)) print[[, 100));
        $('.network-load').html(v+"%");
]]
end

-- systemInterfaceEnabled is defined inside menu.lua
print[[
				//$('#network-clock').html(`${rsp.localtime}`);
				//$('#network-uptime').html(`${rsp.uptime}`);

				let msg = `<div class='m-2'><div class='d-flex flex-wrap navbar-main-badges'>`;
				
				if(rsp.out_of_maintenance) {
					msg += "<a href='https://www.ntop.org/support/faq/how-can-i-renew-maintenance-for-commercial-products/' target='_blank'><span class='badge bg-warning'>]] print(i18n("about.maintenance_expired", {product=info["product"]})) print[[ <i class=\"fas fa-external-link-alt\"></i></span></a> ";
				}

				if(rsp.degraded_performance) {
				   	msg += "<a href=']] print (ntop.getHttpPrefix()) print [[/lua/system_interfaces_stats.lua?page=internals&tab=periodic_activities&periodic_script_issue=any_issue'>"
					msg += "<span class='badge bg-warning'><i class='fas fa-exclamation-triangle title=']] print(i18n("internals.degraded_performance")) print[['></i></span></a>";
				}

				if ((rsp.engaged_alerts > 0 || rsp.alerted_flows > 0) && ]] print(ternary(hasAllowedNetworksSet(), "false", "true")) print[[) {

					var error_color = "#B94A48";

					if(rsp.engaged_alerts > 0) {
                                                let alerts_badge = "bg-info";

                                                if(rsp.engaged_alerts_error > 0) alerts_badge = "bg-danger";
                                                else if(rsp.engaged_alerts_warning > 0) alerts_badge = "bg-warning";

						msg += "<a href=']] print (ntop.getHttpPrefix()) print [[/lua/alert_stats.lua?ifid=]] print(tostring(ifid)) print[[&status=engaged'>"
						msg += "<span class=\"badge " + alerts_badge + "\"><i class=\"fas fa-exclamation-triangle\"></i> "+NtopUtils.formatValue(rsp.engaged_alerts, 1)+"</span></a>";
					}

					if(rsp.alerted_flows_warning > 0 && !(systemInterfaceEnabled)) {
						msg += "<a href=']] print (ntop.getHttpPrefix()) print [[/lua/flows_stats.lua?alert_type_severity=warning'>"
						msg += "<span class=\"badge bg-warning\" title=']] print(i18n("flow_details.alerted_flows")) print[['>"+NtopUtils.formatValue(rsp.alerted_flows_warning, 1)+ " <i class=\"fas fa-stream\"></i> ]] print[[ <i class=\"fas fa-exclamation-triangle\"></i></span></a>";
					}

					if(rsp.alerted_flows_error > 0 && !(systemInterfaceEnabled)) {
						msg += "<a href=']] print (ntop.getHttpPrefix()) print [[/lua/flows_stats.lua?alert_type_severity=error'>"
						msg += "<span class=\"badge bg-danger\" title=']] print(i18n("flow_details.dangerous_flows")) print[['>"+NtopUtils.formatValue(rsp.alerted_flows_error, 1)+ " <i class=\"fas fa-stream\"></i> ]] print[[ <i class=\"fas fa-exclamation-triangle\"></i></span></a>";
					}

					if(rsp.active_discovery_active === true) {
						msg += "<a href=']] print (ntop.getHttpPrefix()) print [[/lua/discover.lua'>"
						msg += "<span class=\"badge bg-warning\" title=']] print(i18n("prefs.network_discovery_running")) print[['><i class=\"fas fa-project-diagram\"></i></span></a>";
					}
				}

				if((rsp.engaged_alerts > 0 || rsp.alerted_flows > 0) && $("#alerts-id").is(":visible") == false) {
					$("#alerts-id").show();
				}

				if(rsp.ts_alerts && rsp.ts_alerts.influxdb && (!systemInterfaceEnabled)) {
					msg += "<a href=']] print (ntop.getHttpPrefix()) print [[/lua/monitor/influxdb_monitor.lua?ifid=]] print(tostring(ifid)) print[[&page=alerts#tab-table-engaged-alerts'>"
					msg += "<span class=\"badge bg-danger\"><i class=\"fas fa-database\"></i></span></a>";
				}

				var alarm_threshold_low = 60;  /* 60% */
				var alarm_threshold_high = 90; /* 90% */
				var alert = 0;

				if(rsp.num_local_hosts > 0 && (!systemInterfaceEnabled)) {
					msg += "<a href=']] print (ntop.getHttpPrefix()) print [[/lua/hosts_stats.lua?mode=local'>";
					msg += "<span title=\"]] print(i18n("local_hosts")) print[[\" class=\"badge bg-success\">";
					msg += NtopUtils.formatValue(rsp.num_local_hosts, 1);
					if(rsp.num_local_rcvd_only_hosts > 0) msg += " ("+NtopUtils.formatValue(rsp.num_local_rcvd_only_hosts, 1)+")";
					msg += " <i class=\"fas fa-laptop\" aria-hidden=\"true\"></i></span></a>";
				}

				const num_remote_hosts = rsp.num_hosts - rsp.num_local_hosts;
				if(num_remote_hosts > 0 && (!systemInterfaceEnabled)) {
					msg += "<a href=']] print (ntop.getHttpPrefix()) print [[/lua/hosts_stats.lua?mode=remote'>";
					var remote_hosts_label = "]] print(i18n("remote_hosts")) print[[";

					if (rsp.hosts_pctg < alarm_threshold_low && !systemInterfaceEnabled) {
						msg += "<span title=\"" + remote_hosts_label +"\" class=\"badge bg-secondary\">";
					} else if (rsp.hosts_pctg < alarm_threshold_high && !systemInterfaceEnabled) {
						alert = 1;
						msg += "<span title=\"" + remote_hosts_label +"\" class=\"badge bg-warning\">";
					} else {
						alert = 1;
						msg += "<span title=\"" + remote_hosts_label +"\" class=\"badge bg-danger\">";
					}

					msg += NtopUtils.formatValue(num_remote_hosts, 1);
                                        num_remote_rcvd_only_hosts = rsp.num_rcvd_only_hosts - rsp.num_local_rcvd_only_hosts;
					if(num_remote_rcvd_only_hosts > 0) msg += " ("+NtopUtils.formatValue(num_remote_rcvd_only_hosts, 1)+")";
					msg += " <i class=\"fas fa-laptop\" aria-hidden=\"true\"></i></span></a>";
				}

				if(rsp.num_devices > 0 && (!systemInterfaceEnabled)) {
					var macs_label = "]] print(i18n("mac_stats.layer_2_source_devices", {device_type=""})) print[[";
					msg += "<a href=']] print (ntop.getHttpPrefix()) print [[/lua/macs_stats.lua?devices_mode=source_macs_only'>";

					if (rsp.macs_pctg < alarm_threshold_low) {
						msg += "<span title=\"" + macs_label +"\" class=\"badge bg-secondary\">";
					} else if(rsp.macs_pctg < alarm_threshold_high) {
						alert = 1;
						msg += "<span title=\"" + macs_label +"\" class=\"badge bg-warning\">";
					} else {
						alert = 1;
						msg += "<span title=\"" + macs_label +"\" class=\"badge bg-danger\">";
					}

					msg += NtopUtils.formatValue(rsp.num_devices, 1)+" <i class=\"fas fa-ethernet\"></i></span></a>";
				}
                    
				if(rsp.num_flows > 0 && (!systemInterfaceEnabled)) {
          msg += "<a href=']] print (ntop.getHttpPrefix()) print [[/lua/flows_stats.lua'>";
          const flows_label = "]] print(i18n("live_flows")) print[["
					if (rsp.flows_pctg < alarm_threshold_low) {
						msg += "<span title=\"" + flows_label +"\" class=\"badge bg-secondary\">";
					} else if(rsp.flows_pctg < alarm_threshold_high) {
						alert = 1;
						msg += "<span title=\"" + flows_label +"\" class=\"badge bg-warning\">";
					} else {
						alert = 1;
						msg += "<span title=\"" + flows_label +"\" class=\"badge bg-danger\">";
					}

					msg += NtopUtils.formatValue(rsp.num_flows, 1)+" <i class=\"fas fa-stream\"></i>  </span> </a>";

					if (rsp.flow_export_drops > 0) {
						const export_pctg = rsp.flow_export_drops / (rsp.flow_export_count + rsp.flow_export_drops + 1);
						if (export_pctg > ]] print(stats_utils.UPPER_BOUND_INFO_EXPORTS) print[[) {
							const badge_class = (export_pctg <= ]] print(stats_utils.UPPER_BOUND_WARNING_EXPORTS) print[[) ? 'warning' : 'danger';
							msg += "<a href=']] print (ntop.getHttpPrefix()) print [[/lua/if_stats.lua'><span class=\"badge bg-"+badge_class+"\"><i class=\"fas fa-exclamation-triangle\" style=\"color: #FFFFFF;\"></i> "+NtopUtils.formatValue(rsp.flow_export_drops, 1)+" Export drop";
							if(rsp.flow_export_drops > 1) msg += "s";
							msg += "</span></a>";
						}
					}

				}

				if ((rsp.num_live_captures != undefined) && (rsp.num_live_captures > 0) && (!systemInterfaceEnabled)) {
					msg += "<a href=']] print(ntop.getHttpPrefix()) print [[/lua/live_capture_stats.lua'>";
					msg += "<span class=\"badge bg-primary\">";
					msg += NtopUtils.addCommas(rsp.num_live_captures)+" <i class=\"fas fa-download fa-lg\"></i></span></a>";
				}

				if (rsp.traffic_recording != undefined && (!systemInterfaceEnabled)) {
					var status_label="primary";
					var status_title="]] print(i18n("traffic_recording.recording")) print [[";

					if (rsp.traffic_recording != "recording") {
						status_label = "danger";
						status_title = "]] print(i18n("traffic_recording.failure")) print [[";
					}

					msg += "<a href=']] print (ntop.getHttpPrefix()) print [[/lua/if_stats.lua?ifid=]] print(tostring(ifid)) print[[&page=traffic_recording&tab=status'>";
					msg += "<span class=\"badge bg-"+status_label+"\" title=\""+NtopUtils.addCommas(status_title)+"\">";
					msg += "<i class=\"fas fa-hdd fa-lg\"></i></span></a>";
				}

				if (rsp.traffic_extraction != undefined && (!systemInterfaceEnabled)) {
					var status_title="]] print(i18n("traffic_recording.traffic_extraction_jobs")) print [[";
					var status_label = "secondary";

					if (rsp.traffic_extraction == "ready") status_label="primary";

					msg += "<a href=']] print (ntop.getHttpPrefix()) print [[/lua/if_stats.lua?ifid=]] print(tostring(ifid)) print[[&page=traffic_recording&tab=jobs'>";
					msg += "<span class=\"badge bg-"+status_label+"\" title=\""+NtopUtils.addCommas(status_title)+"\">";
					msg += rsp.traffic_extraction_num_tasks+" <i class=\"fas fa-tasks fa-lg\"></i></span></a>";
				}

				if (rsp.vs_in_progress != undefined && rsp.vs_in_progress > 0 && (!systemInterfaceEnabled)) {
					msg += "<a href=']] print (ntop.getHttpPrefix()) print [[/lua/vulnerability_scan.lua'>";
					msg += "<span class=\"badge bg-primary\">";
					msg += NtopUtils.addCommas(rsp.vs_in_progress) +" <i class=\"fas fa-satellite-dish\"></i></span></a>";
				}

                                if(rsp.ntopcloud == true) {
                                       msg += "<a href=']] print (ntop.getHttpPrefix()) print [[/lua/system_stats.lua?ifid=-1&page=ntopcloud'>"; 
                                       msg += "<blink><span class=\"badge bg-success\">ntop <i class=\"fas fa-cloud\"></i></span></blink></a>";
                                } else  {
                                       msg += "<a href=\"https://cloud.ntop.org\">"; 
                                       msg += "<span class=\"badge bg-danger\">ntop <i class=\"fas fa-cloud\"></i></span></a>";
                                }
]]

if ntop.isOffline() then
	print [[
				msg += "<a href=\"#\" style=\"cursor: default\"><span title=\"]] print (i18n("offline")) print [[\" class=\"badge bg-secondary\"><i class=\"fas fa-plane\"></i></span></a>";
	]]
end

print [[
				msg += '</div></div>';
				// append the message inside the network-load element
				const $msg = $(msg);
				// resize element's font size to fit better
				if ($msg.width() > $msg.css('max-width')) {
					$msg.find('span').css('font-size', '0.748rem');
				}

				$('.network-load').html($msg);

			} catch(e) {
				console.warn(e);
				/* alert("JSON Error (session expired?): logging out"); window.location.replace("]]print (ntop.getHttpPrefix())print [[/lua/logout.lua");  */
			}
		}
	});
}

$(document).ajaxError(function(err, response, ajaxSettings, thrownError) {
	if((response.status == 403) && (response.responseText == "Login Required"))
		window.location.href = "]] print(ntop.getHttpPrefix().."/lua/login.lua") print[[";
});

footerRefresh();  /* call immediately to give the UI a more responsive look */

setInterval(footerRefresh, 7000); /* re-schedule every [interface-rate] seconds */

//Automatically open dropdown-menu
$(document).ready(function(){
    $('ul.nav li.dropdown').hover(function() {
      $(this).find('.dropdown-menu').stop(true, true).delay(150).fadeIn(100);
    }, function() {
      $(this).find('.dropdown-menu').stop(true, true).delay(150).fadeOut(100);
    });
    $('.collapse')
      .on('shown.bs.collapse', function(){
	$(this).parent().find(".fa-caret-down").removeClass("fa-caret-down").addClass("fa-caret-up");
      })
      .on('hidden.bs.collapse', function(){
	$(this).parent().find(".fa-caret-up").removeClass("fa-caret-up").addClass("fa-caret-down");
    });
});

]]

-- This code rewrites the current page state after a POST request to avoid Document Expired errors
if not table.empty(_POST) then
   print[[
    if ((typeof(history) === "object")
      && (typeof(history).replaceState === "function")
      && (typeof(window.location.href) === "string"))
    history.replaceState(history.state, "", window.location.href);
  ]]
end

print[[

// hide the possibly shown alerts icon in the header
]]
if not _ifstats.isView then
   print("$('#alerts-li').hide();")
else
   print("$('#alerts-li').show();")
end

print([[
</script>
]])

-- ######################################

if have_nedge then
   print[[<form id="powerOffForm" method="post">
    <input name="csrf" value="]] print(ntop.getRandomCSRFValue()) print[[" type="hidden" />
    <input name="poweroff" value="" type="hidden" />
  </form>
  <form id="rebootForm" method="post">
    <input name="csrf" value="]] print(ntop.getRandomCSRFValue()) print[[" type="hidden" />
    <input name="reboot" value="" type="hidden" />
  </form>]]

      print(
	 template.gen("modal_confirm_dialog.html", {
			 dialog={
			    id      = "poweroff_dialog",
			    action  = "$('#powerOffForm').submit()",
			    title   = i18n("nedge.power_off"),
			    message = i18n("nedge.power_off_confirm"),
			    confirm = i18n("nedge.power_off"),
			 }
	 })
      )

   print(
      template.gen("modal_confirm_dialog.html", {
		      dialog={
			 id      = "reboot_dialog",
			 action  = "$('#rebootForm').submit()",
			 title   = i18n("nedge.reboot"),
			 message = i18n("nedge.reboot_corfirm"),
			 confirm = i18n("nedge.reboot"),
		      }
      })
   )



end

   print(
      template.gen("modal_confirm_dialog.html", {
		      dialog={
			 id      = "ext_link_dialog",
			 title   = i18n("external_link"),
			 message = i18n("show_alerts.confirm_external_link"),
			 confirm = i18n("redirect"),
		      }
      })
   )


   print[[
        <script type="text/javascript">
          $(document).ready(function(){
            $(document).on('click','a.ntopng-external-link',function(event){
              event.preventDefault();
              const url=$(this)[0].href;
              $("#url_ext_link_dialog").html(url+"<br/>]]print(i18n("are_you_sure"))print[[");
              $("#btn-confirm-action_ext_link_dialog").attr('href',url);
              $('#ext_link_dialog').modal('show');
            });
          });
        </script>
   ]]


-- Updates submenu
if hasSoftwareUpdatesSupport() then

-- Updates check
print[[
<script type='text/javascript'>
  $('#updates-info-li').html(']] print(i18n("updates.checking")) print[[');
  $('#updates-install-li').hide();

  const updates_csrf = ']] print(ntop.getRandomCSRFValue()) print[[';

  /* Updates status */
  var updatesStatus = '';
  var updatesLastCheck = 0;

  /* Install latest update */
  var installUpdate = function() {
    if (confirm(']] print(i18n("updates.install_confirm"))
      if info["pro.license_days_left"] ~= nil and info["pro.license_days_left"] <= 0 then
        -- License is valid, however maintenance is expired: warning the user
        print(" "..i18n("updates.maintenance_expired"))
      end
      print[[')) {
      $.ajax({
        type: 'POST',
        url: ']] print (ntop.getHttpPrefix()) print [[/lua/install_update.lua',
        data: {
          csrf: updates_csrf
        },
        success: function(rsp) {
          $('#updates-info-li').html(']] print(i18n("updates.installing")) print[[')
          $('#updates-info-li').attr('title', '');
          $('#updates-install-li').hide();
          $('#admin-badge').hide();
	  updatesStatus = 'installing';
        }
      });
    }
  }

  /* Check for new updates */
  var checkForUpdates = function() {
    $.ajax({
      type: 'POST',
      url: ']] print (ntop.getHttpPrefix()) print [[/lua/check_update.lua',
      data: {
        csrf: updates_csrf,
        search: 'true'
      },
      success: function(rsp) {
        $('#updates-info-li').html(']] print(i18n("updates.checking")) print[[');
        $('#updates-info-li').attr('title', '');
        $('#updates-install-li').hide();
        $('#admin-badge').hide();
	updatesStatus = 'checking';
      }
    });
  }

  /* Update the menu with the current updates status */
  var updatesRefresh = function() {
    const now = Date.now()/1000;
    let check_time_sec = 10;

    if (updatesStatus == 'installing' || updatesStatus == 'checking') {
        /* Go ahead (frequent update) */
    } else if (updatesStatus == 'update-avail' || updatesStatus == 'upgrade-failure') {
        return; /* no need to check again */
    } else { /* updatesStatus == 'not-avail' || updatesStatus == 'update-failure' || updatesStatus == <other errors> || updatesStatus == '' */
        check_time_sec = 300;
    }

    if (now < updatesLastCheck + check_time_sec) return; /* check with low freq */
    updatesLastCheck = now; 

    $.ajax({
      type: 'GET',
        url: ']] print (ntop.getHttpPrefix()) print [[/lua/check_update.lua',
        data: {},
        success: function(rsp) {
          if(rsp && rsp.status) {

	    updatesStatus = rsp.status;

            if (rsp.status == 'installing') {
              $('#updates-info-li').html(']] print(i18n("updates.installing")) print[[')
              $('#updates-info-li').attr('title', '');
              $('#updates-install-li').hide();
              $('#admin-badge').hide();

            } else if (rsp.status == 'checking') {
              $('#updates-info-li').html(']] print(i18n("updates.checking")) print[[');
              $('#updates-info-li').attr('title', '');
              $('#updates-install-li').hide();
              $('#admin-badge').hide();

            } else if (rsp.status == 'update-avail' || rsp.status == 'upgrade-failure') {

              $('#updates-info-li').html('<span class="badge bg-pill bg-danger">]] print(i18n("updates.available")) print[[</span> ]] print(info["product"]) print[[ ' + rsp.version);
              $('#updates-info-li').attr('title', '');

              var icon = '<i class="fas fa-download"></i>';
              $('#updates-install-li').attr('title', '');
              if (rsp.status !== 'update-avail') {
                icon = '<i class="fas fa-exclamation-triangle text-danger"></i>';
                $('#updates-install-li').attr('title', "]] print(i18n("updates.update_failure_message")) print [[: " + rsp.status);
              }
              $('#updates-install-li').html(icon + " ]] print(i18n("updates.install")) print[[");
              $('#updates-install-li').show();
              $('#updates-install-li').off("click");
              $('#updates-install-li').click(installUpdate);

              if (rsp.status !== 'update-avail') $('#admin-badge').html('!');
              else $('#admin-badge').html('1');
              $('#admin-badge').show();

            } else /* (rsp.status == 'not-avail' || rsp.status == 'update-failure' || rsp.status == <other errors>) */ {

              var icon = '';
              $('#updates-info-li').attr('title', '');
              if (rsp.status !== 'not-avail') {
                icon = '<i class="fas fa-exclamation-triangle text-danger"></i> ';
                $('#updates-info-li').attr('title', "]] print(i18n("updates.update_failure_message")) print [[: " + rsp.status);
              }
              $('#updates-info-li').html(icon + ']] print(i18n("updates.no_updates")) print[[');

              $('#updates-install-li').html("<i class='fas fa-sync'></i> ]] print(i18n("updates.check")) print[[");
              $('#updates-install-li').show();
              $('#updates-install-li').off("click");
              $('#updates-install-li').click(checkForUpdates);

              $('#admin-badge').hide();
            }
          }
        }
    });
  }
  setInterval(updatesRefresh, 1000);
</script>
]]
end

-- close wrapper
print[[
      </main>
    </div>
  </body>
</html> ]]