demo-orgs: Move helper function to get days remaining until deletion.

Moves the get_demo_organization_deadline_days_remaining helper from
"web/src/navbar_alerts.ts" to "web/src/demo_organizations_ui.ts".

Prep commit for updating the navbar alert for demo organization to
have a button that opens the modal for converting the organization
to a permanent organization.

web/src/demo_organizations_ui.ts

@@ -1,4 +1,5 @@
 import $ from "jquery";
+import assert from "minimalistic-assert";
 import {z} from "zod";
 
 import render_convert_demo_organization_form from "../templates/settings/convert_demo_organization_form.hbs";
@@ -8,7 +9,6 @@ import * as channel from "./channel.ts";
 import * as dialog_widget from "./dialog_widget.ts";
 import {$t} from "./i18n.ts";
 import * as keydown_util from "./keydown_util.ts";
-import {get_demo_organization_deadline_days_remaining} from "./navbar_alerts.ts";
 import * as settings_config from "./settings_config.ts";
 import * as settings_data from "./settings_data.ts";
 import * as settings_org from "./settings_org.ts";
@@ -16,6 +16,15 @@ import type {RequestOpts} from "./settings_ui.ts";
 import {current_user, realm} from "./state_data.ts";
 import type {HTMLSelectOneElement} from "./types.ts";
 
+export function get_demo_organization_deadline_days_remaining(): number {
+    const now = Date.now();
+    assert(realm.demo_organization_scheduled_deletion_date !== undefined);
+    const deadline = realm.demo_organization_scheduled_deletion_date * 1000;
+    const day = 24 * 60 * 60 * 1000; // hours * minutes * seconds * milliseconds
+    const days_remaining = Math.round(Math.abs(deadline - now) / day);
+    return days_remaining;
+}
+
 export function insert_demo_organization_warning(): void {
     const days_remaining = get_demo_organization_deadline_days_remaining();
     const rendered_demo_organization_warning = render_demo_organization_warning({

web/src/navbar_alerts.ts

@@ -8,6 +8,7 @@ import render_navbar_banners_testing_popover from "../templates/popovers/navbar_
 import * as banners from "./banners.ts";
 import type {AlertBanner} from "./banners.ts";
 import * as channel from "./channel.ts";
+import * as demo_organizations_ui from "./demo_organizations_ui.ts";
 import * as desktop_notifications from "./desktop_notifications.ts";
 import * as feedback_widget from "./feedback_widget.ts";
 import {$t, $t_html} from "./i18n.ts";
@@ -172,15 +173,6 @@ export function toggle_organization_profile_incomplete_banner(): void {
     }
 }
 
-export function get_demo_organization_deadline_days_remaining(): number {
-    const now = Date.now();
-    assert(realm.demo_organization_scheduled_deletion_date !== undefined);
-    const deadline = realm.demo_organization_scheduled_deletion_date * 1000;
-    const day = 24 * 60 * 60 * 1000; // hours * minutes * seconds * milliseconds
-    const days_remaining = Math.round(Math.abs(deadline - now) / day);
-    return days_remaining;
-}
-
 export function should_offer_to_update_timezone(): boolean {
     // This offer is only for logged-in users with the setting enabled.
     return (
@@ -358,7 +350,7 @@ const bankruptcy_banner = (): AlertBanner => {
 };
 
 const demo_organization_deadline_banner = (): AlertBanner => {
-    const days_remaining = get_demo_organization_deadline_days_remaining();
+    const days_remaining = demo_organizations_ui.get_demo_organization_deadline_days_remaining();
     return {
         process: "demo-organization-deadline",
         intent: days_remaining <= 7 ? "danger" : "info",

web/tests/demo_organizations.test.cjs

@@ -0,0 +1,27 @@
+"use strict";
+
+const assert = require("node:assert/strict");
+
+const {addDays} = require("date-fns");
+
+const {zrequire} = require("./lib/namespace.cjs");
+const {run_test} = require("./lib/test.cjs");
+
+const demo_organization_ui = zrequire("demo_organizations_ui");
+const {set_realm} = zrequire("state_data");
+
+const realm = {};
+set_realm(realm);
+
+run_test("get_demo_organization_deadline_days_remaining", ({override}) => {
+    const start_time = new Date("2024-01-01T10:00:00.000Z"); // Wednesday 1/1/2024 10:00:00 AM (UTC+0)
+    override(Date, "now", () => start_time);
+
+    const demo_organization_scheduled_deletion_date = addDays(start_time, 7); // Wednesday 1/8/2024 10:00:00 AM (UTC+0)
+    override(
+        realm,
+        "demo_organization_scheduled_deletion_date",
+        Math.trunc(demo_organization_scheduled_deletion_date / 1000),
+    );
+    assert.equal(demo_organization_ui.get_demo_organization_deadline_days_remaining(), 7);
+});

web/tests/navbar_alerts.test.cjs

@@ -152,16 +152,3 @@ test("should_show_server_upgrade_banner", ({override}) => {
     override(Date, "now", () => addDays(start_time, 8).getTime()); // Thursday 1/9/2024 10:00:00 AM (UTC+0)
     assert.equal(navbar_alerts.should_show_server_upgrade_banner(ls), true);
 });
-
-test("get_demo_organization_deadline_days_remaining", ({override}) => {
-    const start_time = new Date("2024-01-01T10:00:00.000Z"); // Wednesday 1/1/2024 10:00:00 AM (UTC+0)
-    override(Date, "now", () => start_time);
-
-    const demo_organization_scheduled_deletion_date = addDays(start_time, 7); // Wednesday 1/8/2024 10:00:00 AM (UTC+0)
-    override(
-        realm,
-        "demo_organization_scheduled_deletion_date",
-        Math.trunc(demo_organization_scheduled_deletion_date / 1000),
-    );
-    assert.equal(navbar_alerts.get_demo_organization_deadline_days_remaining(), 7);
-});