From 6f371deaa79e12a6f28a734b29fc7311b952ff46 Mon Sep 17 00:00:00 2001
From: Linus Rath <139418639+rathlinus@users.noreply.github.com>
Date: Wed, 28 Oct 2026 04:28:09 +0100
Subject: [PATCH] fix: show contact dates, print headings and the disabled
 notice in the app's language

---
 .../contacts/__tests__/contact-print.test.ts  | 24 ++++-
 components/contacts/contact-context-menu.tsx  |  7 +-
 components/contacts/contact-detail.tsx        | 77 ++-------------
 components/contacts/contact-list-item.tsx     |  6 +-
 components/contacts/contact-print.ts          | 98 ++++++++++++-------
 components/contacts/contacts-app.tsx          |  6 +-
 lib/__tests__/contact-dates.test.ts           | 15 +++
 lib/contact-dates.ts                          | 45 +++++++++
 locales/ar/common.json                        |  3 +
 locales/ca/common.json                        |  3 +
 locales/cs/common.json                        |  3 +
 locales/da/common.json                        |  3 +
 locales/de/common.json                        |  3 +
 locales/en/common.json                        |  3 +
 locales/es/common.json                        |  3 +
 locales/et/common.json                        |  3 +
 locales/fa/common.json                        |  3 +
 locales/fr/common.json                        |  3 +
 locales/he/common.json                        |  3 +
 locales/hu/common.json                        |  3 +
 locales/it/common.json                        |  3 +
 locales/ja/common.json                        |  3 +
 locales/ko/common.json                        |  3 +
 locales/lv/common.json                        |  3 +
 locales/mn/common.json                        |  3 +
 locales/nb/common.json                        |  3 +
 locales/nl/common.json                        |  3 +
 locales/pl/common.json                        |  3 +
 locales/pt/common.json                        |  3 +
 locales/ro/common.json                        |  3 +
 locales/ru/common.json                        |  3 +
 locales/sk/common.json                        |  3 +
 locales/th/common.json                        |  3 +
 locales/tr/common.json                        |  3 +
 locales/uk/common.json                        |  3 +
 locales/zh-TW/common.json                     |  3 +
 locales/zh/common.json                        |  3 +
 37 files changed, 251 insertions(+), 114 deletions(-)
 create mode 100644 lib/__tests__/contact-dates.test.ts
 create mode 100644 lib/contact-dates.ts

diff --git a/components/contacts/__tests__/contact-print.test.ts b/components/contacts/__tests__/contact-print.test.ts
index 9a6ced8ef..e229e4100 100644
--- a/components/contacts/__tests__/contact-print.test.ts
+++ b/components/contacts/__tests__/contact-print.test.ts
@@ -1,9 +1,11 @@
 import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
-import { printContact } from '../contact-print';
+import { printContact, printLabels } from '../contact-print';
 import { useAuthStore } from '@/stores/auth-store';
 import { clearContactPhotoCache } from '@/lib/contact-photo-cache';
 import type { ContactCard } from '@/lib/jmap/types';
 
+const LABELS = printLabels((key) => key, 'en');
+
 const base: ContactCard = {
   id: 'c1',
   addressBookIds: {},
@@ -36,7 +38,7 @@ describe('printContact', () => {
   it('opens the window right away and prints a Stalwart 1.0 photo inline as a data: URI', async () => {
     fetchBlob.mockResolvedValue(new Blob([new Uint8Array([0xff, 0xd8, 0xff])], { type: 'image/jpeg' }));
 
-    const done = printContact({ ...base, media: { photo: { kind: 'photo', blobId: 'dbcX', mediaType: 'image/jpeg' } } });
+    const done = printContact({ ...base, media: { photo: { kind: 'photo', blobId: 'dbcX', mediaType: 'image/jpeg' } } }, LABELS);
     // Before anything is awaited, while the click still allows a popup.
     expect(open).toHaveBeenCalledTimes(1);
     await done;
@@ -47,7 +49,7 @@ describe('printContact', () => {
   });
 
   it('prints a Stalwart 0.16 photo as it is', async () => {
-    await printContact({ ...base, media: { photo: { kind: 'photo', uri: 'data:base64,/9j/' } } });
+    await printContact({ ...base, media: { photo: { kind: 'photo', uri: 'data:base64,/9j/' } } }, LABELS);
 
     expect(fetchBlob).not.toHaveBeenCalled();
     expect(written()).toContain('src="data:image/jpeg;base64,/9j/"');
@@ -57,7 +59,7 @@ describe('printContact', () => {
     vi.useFakeTimers({ toFake: ['setTimeout', 'clearTimeout'] });
     fetchBlob.mockRejectedValue(new Error('Failed to fetch blob: 404'));
 
-    const done = printContact({ ...base, media: { photo: { kind: 'photo', blobId: 'dbcGone' } } });
+    const done = printContact({ ...base, media: { photo: { kind: 'photo', blobId: 'dbcGone' } } }, LABELS);
     await vi.advanceTimersByTimeAsync(1000);
     await done;
 
@@ -68,9 +70,21 @@ describe('printContact', () => {
 
   it('does not write into a window the user already closed', async () => {
     fetchBlob.mockResolvedValue(new Blob(['x'], { type: 'image/jpeg' }));
-    const done = printContact({ ...base, media: { photo: { kind: 'photo', blobId: 'dbcX' } } });
+    const done = printContact({ ...base, media: { photo: { kind: 'photo', blobId: 'dbcX' } } }, LABELS);
     printWindow.closed = true;
     await done;
     expect(printWindow.document.write).not.toHaveBeenCalled();
   });
+
+  it('prints the headings and dates in the language of the app', async () => {
+    const de = printLabels((key) => ({ 'detail.emails': 'E-Mail-Adressen', 'detail.anniversaries': 'Jahrestage', 'detail.anniversary_birth': 'Geburtstag' } as Record<string, string>)[key] ?? key, 'de');
+    await printContact({
+      ...base,
+      emails: { e: { address: 'ann@example.com' } },
+      anniversaries: { b: { kind: 'birth', date: { year: 1988, month: 3, day: 15 } } },
+    } as ContactCard, de);
+    expect(written()).toContain('<h2>E-Mail-Adressen</h2>');
+    expect(written()).toContain('<dt>Geburtstag</dt><dd>15. März 1988</dd>');
+    expect(written()).not.toContain('>Email<');
+  });
 });
diff --git a/components/contacts/contact-context-menu.tsx b/components/contacts/contact-context-menu.tsx
index c79b088b0..db1f2058e 100644
--- a/components/contacts/contact-context-menu.tsx
+++ b/components/contacts/contact-context-menu.tsx
@@ -1,6 +1,6 @@
 "use client";
 
-import { useTranslations } from "next-intl";
+import { useLocale, useTranslations } from "next-intl";
 import {
   ContextMenu,
   ContextMenuItem,
@@ -24,7 +24,7 @@ import {
 import type { ContactCard } from "@/lib/jmap/types";
 import { getContactPrimaryEmail } from "@/stores/contact-store";
 import { exportContact, useContactExportBusy } from "./contact-export";
-import { printContact } from "./contact-print";
+import { printContact, printLabels } from "./contact-print";
 import { toast } from "@/stores/toast-store";
 
 function getContactPrimaryPhone(contact: ContactCard): string {
@@ -84,6 +84,7 @@ export function ContactContextMenu({
   onBatchDelete,
 }: ContactContextMenuProps) {
   const t = useTranslations("contacts");
+  const locale = useLocale();
   const email = getContactPrimaryEmail(contact);
   const phone = getContactPrimaryPhone(contact);
   const showBatchActions = isMultiSelect && selectedCount > 1;
@@ -116,7 +117,7 @@ export function ContactContextMenu({
   };
 
   const handlePrint = () => {
-    void printContact(contact);
+    void printContact(contact, printLabels(t, locale));
   };
 
   if (showBatchActions) {
diff --git a/components/contacts/contact-detail.tsx b/components/contacts/contact-detail.tsx
index d84cecca1..91a35b2a8 100644
--- a/components/contacts/contact-detail.tsx
+++ b/components/contacts/contact-detail.tsx
@@ -1,19 +1,20 @@
 "use client";
 
 import { useState, useEffect, useRef, useMemo } from "react";
-import { useTranslations } from "next-intl";
+import { useLocale, useTranslations } from "next-intl";
+import { contactDateParts, formatContactDate } from "@/lib/contact-dates";
 import { Mail, Phone, Building, MapPin, StickyNote, Pencil, Trash2, BookUser, Copy, Send, Globe, Cake, KeyRound, Users, Briefcase, Heart, Languages, Calendar, UserCircle, Download, MoreHorizontal, Printer, FolderInput } from "@/components/icons";
 import { Avatar } from "@/components/ui/avatar";
 import { MailtoLink } from "@/components/ui/mailto-link";
 import { Button } from "@/components/ui/button";
 import { ContextMenuItem, ContextMenuSeparator } from "@/components/ui/context-menu";
 import { cn } from "@/lib/utils";
-import type { ContactCard, AnniversaryDate, PartialDate } from "@/lib/jmap/types";
+import type { ContactCard, AnniversaryDate } from "@/lib/jmap/types";
 import { getContactDisplayName, getContactPrimaryEmail, getContactPhotoRef } from "@/stores/contact-store";
 import { ContactActivity } from "./contact-activity";
 import { toast } from "@/stores/toast-store";
 import { exportContact, useContactExportBusy } from "./contact-export";
-import { printContact } from "./contact-print";
+import { printContact, printLabels } from "./contact-print";
 import { usePluginSlotOffers } from "@/hooks/use-plugin-slot-offers";
 import { PluginSlot } from "@/components/plugins/plugin-slot";
 import { contactHooks } from "@/lib/plugin-hooks";
@@ -66,32 +67,8 @@ function formatPhoneFeatures(features: Record<string, boolean> | undefined, labe
   return Object.keys(features).filter(k => features[k]).map(label).join(", ");
 }
 
-function getDateParts(dateInput: AnniversaryDate): { year?: number; month?: number; day?: number } {
-  if (typeof dateInput === "object" && dateInput !== null) {
-    if (dateInput["@type"] === "Timestamp" && typeof dateInput.utc === "string") {
-      const d = new Date(dateInput.utc);
-      if (!isNaN(d.getTime())) {
-        return { year: d.getUTCFullYear(), month: d.getUTCMonth() + 1, day: d.getUTCDate() };
-      }
-      return {};
-    }
-    const pd = dateInput as PartialDate;
-    return { year: pd.year, month: pd.month, day: pd.day };
-  }
-  const s = String(dateInput);
-  if (s.startsWith("--")) {
-    const parts = s.substring(2).split("-");
-    return { month: parseInt(parts[0], 10), day: parts[1] ? parseInt(parts[1], 10) : undefined };
-  }
-  const d = new Date(s);
-  if (!isNaN(d.getTime())) {
-    return { year: d.getFullYear(), month: d.getMonth() + 1, day: d.getDate() };
-  }
-  return {};
-}
-
 function getCompletedYears(dateInput: AnniversaryDate): number | null {
-  const { year, month, day } = getDateParts(dateInput);
+  const { year, month, day } = contactDateParts(dateInput);
   if (!year) return null;
   const now = new Date();
   let years = now.getFullYear() - year;
@@ -104,44 +81,10 @@ function getCompletedYears(dateInput: AnniversaryDate): number | null {
   return years;
 }
 
-function formatDate(dateInput: AnniversaryDate): string {
-  if (typeof dateInput === 'object' && dateInput !== null) {
-    if (dateInput['@type'] === 'Timestamp' && typeof dateInput.utc === 'string') {
-      try {
-        const d = new Date(dateInput.utc as string);
-        if (!isNaN(d.getTime())) {
-          return d.toLocaleDateString(undefined, { year: "numeric", month: "long", day: "numeric" });
-        }
-      } catch { /* fallback */ }
-      return String(dateInput.utc);
-    }
-    const pd = dateInput as PartialDate;
-    const monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
-    const parts: string[] = [];
-    if (pd.month && monthNames[pd.month - 1]) parts.push(monthNames[pd.month - 1]);
-    if (pd.day) parts.push(String(pd.day));
-    if (pd.year) parts.push(String(pd.year));
-    return parts.join(' ') || String(dateInput);
-  }
-  const dateStr = String(dateInput);
-  if (dateStr.startsWith("--")) {
-    const parts = dateStr.substring(2).split("-");
-    const month = parseInt(parts[0], 10);
-    const day = parts[1] ? parseInt(parts[1], 10) : undefined;
-    const monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
-    return day ? `${monthNames[month - 1]} ${day}` : monthNames[month - 1];
-  }
-  try {
-    const d = new Date(dateStr);
-    if (!isNaN(d.getTime())) {
-      return d.toLocaleDateString(undefined, { year: "numeric", month: "long", day: "numeric" });
-    }
-  } catch { /* fallback */ }
-  return dateStr;
-}
 
 export function ContactDetail({ contact, onEdit, onDelete, onAddToGroup, onDuplicate, onMoveTo, onCompose, isMobile, className }: ContactDetailProps) {
   const t = useTranslations("contacts");
+  const locale = useLocale();
   const contextLabel = (key: string) => (CONTEXT_LABEL_KEYS[key] ? t(CONTEXT_LABEL_KEYS[key]) : key);
   const featureLabel = (key: string) => (PHONE_FEATURE_LABEL_KEYS[key] ? t(PHONE_FEATURE_LABEL_KEYS[key]) : key);
 
@@ -179,7 +122,7 @@ export function ContactDetail({ contact, onEdit, onDelete, onAddToGroup, onDupli
   };
 
   const handlePrint = () => {
-    void printContact(contact, name);
+    void printContact(contact, printLabels(t, locale), name);
   };
 
   const moreItems: MoreItem[] = [];
@@ -396,7 +339,7 @@ export function ContactDetail({ contact, onEdit, onDelete, onAddToGroup, onDupli
                 return (
                   <FieldRow key={`an${i}`} icon={Cake} label={t(`detail.anniversary_${ann.kind}`)}>
                     <div className="text-sm">
-                      {formatDate(ann.date)}
+                      {formatContactDate(ann.date, locale)}
                       {years !== null && (
                         <span className="text-muted-foreground"> · {t(suffixKey, { count: years })}</span>
                       )}
@@ -543,8 +486,8 @@ export function ContactDetail({ contact, onEdit, onDelete, onAddToGroup, onDupli
 
         {(contact.created || contact.updated) && (
           <div className="py-4 text-xs text-muted-foreground space-y-1">
-            {contact.created && <div>{t("detail.created")}: {formatDate(contact.created)}</div>}
-            {contact.updated && <div>{t("detail.updated")}: {formatDate(contact.updated)}</div>}
+            {contact.created && <div>{t("detail.created")}: {formatContactDate(contact.created, locale)}</div>}
+            {contact.updated && <div>{t("detail.updated")}: {formatContactDate(contact.updated, locale)}</div>}
           </div>
         )}
       </div>
diff --git a/components/contacts/contact-list-item.tsx b/components/contacts/contact-list-item.tsx
index e3b6e4923..78be0a7b5 100644
--- a/components/contacts/contact-list-item.tsx
+++ b/components/contacts/contact-list-item.tsx
@@ -2,6 +2,7 @@
 
 import { useCallback, useRef, type DragEvent } from "react";
 import { useLongPress } from "@/hooks/use-long-press";
+import { useTranslations } from "next-intl";
 import { Avatar } from "@/components/ui/avatar";
 import { cn } from "@/lib/utils";
 import type { ContactCard } from "@/lib/jmap/types";
@@ -31,6 +32,7 @@ export function ContactListItem({ contact, isSelected, isChecked, hasSelection,
   const longPress = useLongPress(() => {
     if (rowRef.current) onLongPress?.(rowRef.current);
   }, !!onLongPress);
+  const t = useTranslations("contacts");
   const name = getContactDisplayName(contact);
   const email = getContactPrimaryEmail(contact);
   const org = contact.organizations
@@ -56,11 +58,11 @@ export function ContactListItem({ contact, isSelected, isChecked, hasSelection,
       box-shadow: 0 4px 12px rgba(0,0,0,0.15); font-size: 14px; font-weight: 500;
       z-index: 9999; white-space: nowrap; pointer-events: none;
     `;
-    preview.textContent = ids.length === 1 ? (name || "1 contact") : `${ids.length} contacts`;
+    preview.textContent = ids.length === 1 && name ? name : t("drag_count", { count: ids.length });
     document.body.appendChild(preview);
     e.dataTransfer.setDragImage(preview, 0, 0);
     requestAnimationFrame(() => preview.remove());
-  }, [contact.id, name, email, selectedContactIds]);
+  }, [contact.id, name, email, selectedContactIds, t]);
 
   return (
     <div
diff --git a/components/contacts/contact-print.ts b/components/contacts/contact-print.ts
index e00b929c1..24fa9e706 100644
--- a/components/contacts/contact-print.ts
+++ b/components/contacts/contact-print.ts
@@ -1,4 +1,5 @@
-import type { ContactCard, PartialDate } from "@/lib/jmap/types";
+import type { ContactCard } from "@/lib/jmap/types";
+import { formatContactDate } from "@/lib/contact-dates";
 import { getContactDisplayName, getContactPhotoRef } from "@/stores/contact-store";
 import { loadContactMediaBlob } from "@/lib/contact-media";
 import { blobToDataUri } from "@/lib/data-uri";
@@ -37,7 +38,53 @@ async function printablePhotoUri(contact: ContactCard): Promise<string | undefin
   return blob ? blobToDataUri(blob, photo.mediaType).catch(() => undefined) : undefined;
 }
 
-export async function printContact(contact: ContactCard, displayName?: string): Promise<void> {
+/** The print sheet's words, in the UI language. */
+export interface PrintLabels {
+  locale: string;
+  contact: string;
+  emails: string;
+  email: string;
+  phones: string;
+  phone: string;
+  organizations: string;
+  organization: string;
+  titles: string;
+  title: string;
+  role: string;
+  addresses: string;
+  address: string;
+  online: string;
+  onlineService: string;
+  anniversaries: string;
+  anniversary: (kind: string) => string;
+  notes: string;
+}
+
+/** The print labels from the contacts translations (`t` of the "contacts" namespace). */
+export function printLabels(t: (key: string) => string, locale: string): PrintLabels {
+  return {
+    locale,
+    contact: t("detail.section_contact"),
+    emails: t("detail.emails"),
+    email: t("detail.email_default_label"),
+    phones: t("detail.phones"),
+    phone: t("detail.phone_default_label"),
+    organizations: t("detail.organizations"),
+    organization: t("detail.organization_label"),
+    titles: t("detail.titles"),
+    title: t("detail.title_label"),
+    role: t("detail.role_label"),
+    addresses: t("detail.addresses"),
+    address: t("detail.address_default_label"),
+    online: t("detail.online_services"),
+    onlineService: t("detail.online_service_default_label"),
+    anniversaries: t("detail.anniversaries"),
+    anniversary: (kind) => t(`detail.anniversary_${["birth", "death", "wedding"].includes(kind) ? kind : "other"}`),
+    notes: t("detail.notes"),
+  };
+}
+
+export async function printContact(contact: ContactCard, labels: PrintLabels, displayName?: string): Promise<void> {
   // Open the window before anything is awaited: browsers allow the popup only
   // while the click that asked for it is being handled.
   const printWindow = window.open("", "_blank");
@@ -63,62 +110,45 @@ export async function printContact(contact: ContactCard, displayName?: string):
   const row = (label: string, value: string) =>
     `<dt>${escapeHtml(label)}</dt><dd>${escapeHtml(value)}</dd>`;
 
-  section("Email", emails.map(e => row(e.label || "Email", e.address || "")));
-  section("Phone", phones.map(p => row(p.label || "Phone", p.number || "")));
+  section(labels.emails, emails.map(e => row(e.label || labels.email, e.address || "")));
+  section(labels.phones, phones.map(p => row(p.label || labels.phone, p.number || "")));
   section(
-    "Organization",
+    labels.organizations,
     orgs.map(o => {
       const units = o.units ? Object.values(o.units).map(u => u.name).filter(Boolean).join(", ") : "";
       const value = [o.name, units].filter(Boolean).join(" \u2014 ");
-      return row("Organization", value);
+      return row(labels.organization, value);
     }),
   );
-  section("Title", titles.map(t => row(t.kind === "role" ? "Role" : "Title", t.name || "")));
+  section(labels.titles, titles.map(t => row(t.kind === "role" ? labels.role : labels.title, t.name || "")));
   section(
-    "Address",
+    labels.addresses,
     addresses.map(a => {
       const parts = [a.street, a.locality, a.region, a.postcode, a.country]
         .map(p => (typeof p === "string" ? p : ""))
         .filter(Boolean);
-      return row(a.label || "Address", parts.join(", "));
+      return row(a.label || labels.address, parts.join(", "));
     }),
   );
   section(
-    "Online",
-    onlineServices.map(s => row(s.label || s.service || "Online", s.uri || s.user || "")),
+    labels.online,
+    onlineServices.map(s => row(s.label || s.service || labels.onlineService, s.uri || s.user || "")),
   );
   section(
-    "Anniversary",
-    anniversaries.map(a => {
-      const date = a.date;
-      let formatted = "";
-      if (typeof date === "object" && date !== null) {
-        if ("utc" in date && typeof date.utc === "string") formatted = date.utc;
-        else {
-          const parts: string[] = [];
-          const pd = date as PartialDate;
-          if (pd.year) parts.push(String(pd.year));
-          if (pd.month) parts.push(String(pd.month).padStart(2, "0"));
-          if (pd.day) parts.push(String(pd.day).padStart(2, "0"));
-          formatted = parts.join("-");
-        }
-      } else if (date) {
-        formatted = String(date);
-      }
-      return row(a.kind || "Date", formatted);
-    }),
+    labels.anniversaries,
+    anniversaries.map(a => row(labels.anniversary(a.kind || "other"), a.date ? formatContactDate(a.date, labels.locale) : "")),
   );
-  section("Notes", notes.map(n => row("", n.note || "")));
+  section(labels.notes, notes.map(n => row("", n.note || "")));
 
   const photoTag = photoUri
     ? `<img class="photo" src="${escapeHtml(photoUri)}" alt="" />`
     : `<div class="photo placeholder">${escapeHtml((name || "?").charAt(0).toUpperCase())}</div>`;
 
   const html = `<!doctype html>
-<html>
+<html lang="${escapeHtml(labels.locale)}">
 <head>
 <meta charset="utf-8" />
-<title>${escapeHtml(name || "Contact")}</title>
+<title>${escapeHtml(name || labels.contact)}</title>
 <style>
   * { box-sizing: border-box; }
   body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; color: #111; margin: 32px; }
@@ -137,7 +167,7 @@ export async function printContact(contact: ContactCard, displayName?: string):
 <body>
 <header>
   ${photoTag}
-  <div><h1>${escapeHtml(name || "Contact")}</h1></div>
+  <div><h1>${escapeHtml(name || labels.contact)}</h1></div>
 </header>
 ${rows.join("")}
 </body>
diff --git a/components/contacts/contacts-app.tsx b/components/contacts/contacts-app.tsx
index 2ae46fa35..07229f257 100644
--- a/components/contacts/contacts-app.tsx
+++ b/components/contacts/contacts-app.tsx
@@ -1078,9 +1078,9 @@ function ContactsAppContent({ linkSegments: routeSegments }: ContactsAppProps =
     return (
       <div className="flex h-dvh items-center justify-center bg-background p-6">
         <div className="max-w-lg text-center space-y-3">
-          <AlertTriangle className="w-10 h-10 text-yellow-500 mx-auto" />
-          <p className="text-sm font-medium">Contacts feature is disabled by your administrator</p>
-          <p className="text-xs text-muted-foreground">Please contact your administrator if you need access.</p>
+          <AlertTriangle className="w-10 h-10 text-amber-600 dark:text-amber-400 mx-auto" />
+          <p className="text-sm font-medium">{t("disabled_title")}</p>
+          <p className="text-xs text-muted-foreground">{t("disabled_description")}</p>
         </div>
       </div>
     );
diff --git a/lib/__tests__/contact-dates.test.ts b/lib/__tests__/contact-dates.test.ts
new file mode 100644
index 000000000..1e75bb400
--- /dev/null
+++ b/lib/__tests__/contact-dates.test.ts
@@ -0,0 +1,15 @@
+import { describe, it, expect } from 'vitest';
+import { formatContactDate } from '../contact-dates';
+
+describe('contact dates in the UI language', () => {
+  it('writes a birthday the German way in German, not "Mar 15 1988"', () => {
+    expect(formatContactDate({ year: 1988, month: 3, day: 15 }, 'de')).toBe('15. März 1988');
+    expect(formatContactDate('1988-03-15', 'de')).toBe('15. März 1988');
+  });
+
+  it('leaves out what the date does not name', () => {
+    expect(formatContactDate('--03-15', 'en')).toBe('March 15');
+    expect(formatContactDate({ year: 1988 }, 'en')).toBe('1988');
+    expect(formatContactDate('--02-29', 'fr')).toBe('29 février');
+  });
+});
diff --git a/lib/contact-dates.ts b/lib/contact-dates.ts
new file mode 100644
index 000000000..e2db05f91
--- /dev/null
+++ b/lib/contact-dates.ts
@@ -0,0 +1,45 @@
+import type { AnniversaryDate, PartialDate } from "@/lib/jmap/types";
+
+/**
+ * A contact's date (birthday, anniversary, created) in the UI language:
+ * "15. März 1988", "March 15", "1988". A date without a year (vCard
+ * "--03-15") or without a day shows only what it has.
+ */
+export function formatContactDate(dateInput: AnniversaryDate | string, locale: string): string {
+  const parts = contactDateParts(dateInput);
+  const { year, month, day } = parts;
+  try {
+    if (month && day) {
+      // A leap year, so 29 February survives without a year.
+      const d = new Date(Date.UTC(year ?? 2000, month - 1, day));
+      return new Intl.DateTimeFormat(locale, { timeZone: "UTC", month: "long", day: "numeric", ...(year ? { year: "numeric" } : {}) }).format(d);
+    }
+    if (month) {
+      const d = new Date(Date.UTC(year ?? 2000, month - 1, 1));
+      return new Intl.DateTimeFormat(locale, { timeZone: "UTC", month: "long", ...(year ? { year: "numeric" } : {}) }).format(d);
+    }
+    if (year) return String(year);
+  } catch { /* an unknown locale: below */ }
+  return typeof dateInput === "string" ? dateInput : JSON.stringify(dateInput);
+}
+
+/** The year, month and day a contact's date names, whichever it has. */
+export function contactDateParts(dateInput: AnniversaryDate | string): { year?: number; month?: number; day?: number } {
+  if (typeof dateInput === "object" && dateInput !== null) {
+    if (dateInput["@type"] === "Timestamp" && typeof (dateInput as { utc?: unknown }).utc === "string") {
+      const d = new Date((dateInput as { utc: string }).utc);
+      return isNaN(d.getTime()) ? {} : { year: d.getUTCFullYear(), month: d.getUTCMonth() + 1, day: d.getUTCDate() };
+    }
+    const pd = dateInput as PartialDate;
+    return { year: pd.year, month: pd.month, day: pd.day };
+  }
+  const s = String(dateInput);
+  if (s.startsWith("--")) {
+    const [m, d] = s.substring(2).split("-");
+    return { month: parseInt(m, 10) || undefined, day: d ? parseInt(d, 10) || undefined : undefined };
+  }
+  const iso = /^(\d{4})-(\d{2})(?:-(\d{2}))?/.exec(s);
+  if (iso) return { year: Number(iso[1]), month: Number(iso[2]), day: iso[3] ? Number(iso[3]) : undefined };
+  const d = new Date(s);
+  return isNaN(d.getTime()) ? {} : { year: d.getUTCFullYear(), month: d.getUTCMonth() + 1, day: d.getUTCDate() };
+}
diff --git a/locales/ar/common.json b/locales/ar/common.json
index bee95224d..1cf6d4c2e 100644
--- a/locales/ar/common.json
+++ b/locales/ar/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "جهات الاتصال",
+    "disabled_title": "عطّل المسؤول جهات الاتصال",
+    "disabled_description": "تواصل مع المسؤول إذا كنت بحاجة إليها.",
+    "drag_count": "{count, plural, one {جهة اتصال واحدة} other {# جهة اتصال}}",
     "search_placeholder": "بحث في جهات الاتصال...",
     "create_new": "جهة اتصال جديدة",
     "no_category": "بلا فئة",
diff --git a/locales/ca/common.json b/locales/ca/common.json
index 293142a7c..d229b029f 100644
--- a/locales/ca/common.json
+++ b/locales/ca/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Contactes",
+    "disabled_title": "L'administrador ha desactivat els contactes",
+    "disabled_description": "Contacteu amb l'administrador si els necessiteu.",
+    "drag_count": "{count, plural, one {1 contacte} other {# contactes}}",
     "search_placeholder": "Cerca contactes...",
     "create_new": "Contacte nou",
     "no_category": "Sense categoria",
diff --git a/locales/cs/common.json b/locales/cs/common.json
index 3e21d455d..8139ecd89 100644
--- a/locales/cs/common.json
+++ b/locales/cs/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Kontakty",
+    "disabled_title": "Kontakty vypnul správce",
+    "disabled_description": "Pokud je potřebujete, obraťte se na správce.",
+    "drag_count": "{count, plural, one {1 kontakt} few {# kontakty} other {# kontaktů}}",
     "search_placeholder": "Hledat kontakty...",
     "create_new": "Nový kontakt",
     "no_category": "Bez kategorie",
diff --git a/locales/da/common.json b/locales/da/common.json
index 79185e7eb..966c463fb 100644
--- a/locales/da/common.json
+++ b/locales/da/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Kontakter",
+    "disabled_title": "Kontakter er slået fra af din administrator",
+    "disabled_description": "Kontakt din administrator, hvis du har brug for dem.",
+    "drag_count": "{count, plural, one {1 kontakt} other {# kontakter}}",
     "search_placeholder": "Søg efter kontakter...",
     "create_new": "Ny kontakt",
     "no_category": "Ingen kategori",
diff --git a/locales/de/common.json b/locales/de/common.json
index 2f3e06494..4d45de983 100644
--- a/locales/de/common.json
+++ b/locales/de/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Kontakte",
+    "disabled_title": "Kontakte wurden von Ihrem Administrator deaktiviert",
+    "disabled_description": "Wenden Sie sich an Ihren Administrator, wenn Sie Zugriff benötigen.",
+    "drag_count": "{count, plural, one {1 Kontakt} other {# Kontakte}}",
     "search_placeholder": "Kontakte suchen...",
     "create_new": "Neuer Kontakt",
     "no_category": "Ohne Kategorie",
diff --git a/locales/en/common.json b/locales/en/common.json
index 0691f14c4..270c06707 100644
--- a/locales/en/common.json
+++ b/locales/en/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Contacts",
+    "disabled_title": "Contacts is turned off by your administrator",
+    "disabled_description": "Ask your administrator if you need them.",
+    "drag_count": "{count, plural, one {1 contact} other {# contacts}}",
     "search_placeholder": "Search contacts...",
     "create_new": "New Contact",
     "no_category": "No Category",
diff --git a/locales/es/common.json b/locales/es/common.json
index 1500bae35..fb5a28fd9 100644
--- a/locales/es/common.json
+++ b/locales/es/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Contactos",
+    "disabled_title": "Tu administrador ha desactivado los contactos",
+    "disabled_description": "Pídeselos a tu administrador si los necesitas.",
+    "drag_count": "{count, plural, one {1 contacto} other {# contactos}}",
     "search_placeholder": "Buscar contactos...",
     "create_new": "Nuevo contacto",
     "no_category": "Sin categoría",
diff --git a/locales/et/common.json b/locales/et/common.json
index edb1db58d..e7f2bae7f 100644
--- a/locales/et/common.json
+++ b/locales/et/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Kontaktid",
+    "disabled_title": "Administraator on kontaktid välja lülitanud",
+    "disabled_description": "Kui neid vajate, pöörduge administraatori poole.",
+    "drag_count": "{count, plural, one {1 kontakt} other {# kontakti}}",
     "search_placeholder": "Otsi kontakte...",
     "create_new": "Uus kontakt",
     "no_category": "Kategooria puudub",
diff --git a/locales/fa/common.json b/locales/fa/common.json
index 8b422316d..fbe2b978c 100644
--- a/locales/fa/common.json
+++ b/locales/fa/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "مخاطبین",
+    "disabled_title": "مدیر شما مخاطبان را غیرفعال کرده است",
+    "disabled_description": "اگر به آن‌ها نیاز دارید، با مدیر تماس بگیرید.",
+    "drag_count": "{count, plural, one {۱ مخاطب} other {# مخاطب}}",
     "search_placeholder": "جستجوی مخاطبین...",
     "create_new": "مخاطب جدید",
     "no_category": "بدون دسته‌بندی",
diff --git a/locales/fr/common.json b/locales/fr/common.json
index fac982711..08be44bc7 100644
--- a/locales/fr/common.json
+++ b/locales/fr/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Contacts",
+    "disabled_title": "Les contacts ont été désactivés par votre administrateur",
+    "disabled_description": "Contactez votre administrateur si vous en avez besoin.",
+    "drag_count": "{count, plural, one {1 contact} other {# contacts}}",
     "search_placeholder": "Rechercher des contacts...",
     "create_new": "Nouveau contact",
     "no_category": "Sans catégorie",
diff --git a/locales/he/common.json b/locales/he/common.json
index 4618ef4c9..783c809ea 100644
--- a/locales/he/common.json
+++ b/locales/he/common.json
@@ -2822,6 +2822,9 @@
       }
     },
     "title": "אנשי קשר",
+    "disabled_title": "מנהל המערכת השבית את אנשי הקשר",
+    "disabled_description": "פנה למנהל המערכת אם אתה צריך אותם.",
+    "drag_count": "{count, plural, one {איש קשר אחד} other {# אנשי קשר}}",
     "search_placeholder": "חפש אנשי קשר...",
     "create_new": "איש קשר חדש",
     "no_category": "אין קטגוריה",
diff --git a/locales/hu/common.json b/locales/hu/common.json
index 3bb28ab22..29dbd6374 100644
--- a/locales/hu/common.json
+++ b/locales/hu/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Névjegyek",
+    "disabled_title": "A névjegyeket a rendszergazda kikapcsolta",
+    "disabled_description": "Ha szüksége van rájuk, forduljon a rendszergazdához.",
+    "drag_count": "{count, plural, one {1 névjegy} other {# névjegy}}",
     "search_placeholder": "Névjegyek keresése...",
     "create_new": "Új névjegy",
     "no_category": "Nincs kategória",
diff --git a/locales/it/common.json b/locales/it/common.json
index 1c06c0a2a..83dfaa251 100644
--- a/locales/it/common.json
+++ b/locales/it/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Contatti",
+    "disabled_title": "I contatti sono stati disattivati dall'amministratore",
+    "disabled_description": "Rivolgiti all'amministratore se ti servono.",
+    "drag_count": "{count, plural, one {1 contatto} other {# contatti}}",
     "search_placeholder": "Cerca contatti...",
     "create_new": "Nuovo contatto",
     "no_category": "Senza categoria",
diff --git a/locales/ja/common.json b/locales/ja/common.json
index ab1926020..2487039f9 100644
--- a/locales/ja/common.json
+++ b/locales/ja/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "連絡先",
+    "disabled_title": "連絡先は管理者によって無効にされています",
+    "disabled_description": "必要な場合は管理者にお問い合わせください。",
+    "drag_count": "{count, plural, other {#件の連絡先}}",
     "search_placeholder": "連絡先を検索...",
     "create_new": "新しい連絡先",
     "no_category": "カテゴリなし",
diff --git a/locales/ko/common.json b/locales/ko/common.json
index 0c1cbcdae..42e3d7a22 100644
--- a/locales/ko/common.json
+++ b/locales/ko/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "연락처",
+    "disabled_title": "관리자가 연락처를 사용 중지했습니다",
+    "disabled_description": "필요하면 관리자에게 문의하세요.",
+    "drag_count": "{count, plural, other {연락처 #개}}",
     "search_placeholder": "연락처 검색...",
     "create_new": "새 연락처",
     "no_category": "카테고리 없음",
diff --git a/locales/lv/common.json b/locales/lv/common.json
index c57485685..4febb3d22 100644
--- a/locales/lv/common.json
+++ b/locales/lv/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Kontakti",
+    "disabled_title": "Administrators ir izslēdzis kontaktpersonas",
+    "disabled_description": "Ja tās ir nepieciešamas, sazinieties ar administratoru.",
+    "drag_count": "{count, plural, one {1 kontaktpersona} other {# kontaktpersonas}}",
     "search_placeholder": "Meklēt kontaktus...",
     "create_new": "Jauns kontakts",
     "no_category": "Bez kategorijas",
diff --git a/locales/mn/common.json b/locales/mn/common.json
index 4a8ef3f60..e5ff828bc 100644
--- a/locales/mn/common.json
+++ b/locales/mn/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Харилцах утас",
+    "disabled_title": "Таны администратор харилцагчдыг унтраасан",
+    "disabled_description": "Хэрэгтэй бол администратортаа хандана уу.",
+    "drag_count": "{count, plural, one {1 харилцагч} other {# харилцагч}}",
     "search_placeholder": "Харилцагч хайх...",
     "create_new": "Шинэ холбоо барих",
     "no_category": "Ангилалгүй",
diff --git a/locales/nb/common.json b/locales/nb/common.json
index d70fe65c8..6a9a12df7 100644
--- a/locales/nb/common.json
+++ b/locales/nb/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Kontakter",
+    "disabled_title": "Kontakter er slått av av administratoren",
+    "disabled_description": "Spør administratoren hvis du trenger dem.",
+    "drag_count": "{count, plural, one {1 kontakt} other {# kontakter}}",
     "search_placeholder": "Søk etter kontakter...",
     "create_new": "Ny kontakt",
     "no_category": "Ingen kategori",
diff --git a/locales/nl/common.json b/locales/nl/common.json
index fb0455bdf..fa6e168f7 100644
--- a/locales/nl/common.json
+++ b/locales/nl/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Contacten",
+    "disabled_title": "Contacten zijn uitgeschakeld door je beheerder",
+    "disabled_description": "Vraag je beheerder als je ze nodig hebt.",
+    "drag_count": "{count, plural, one {1 contact} other {# contacten}}",
     "search_placeholder": "Contacten zoeken...",
     "create_new": "Nieuw contact",
     "no_category": "Geen categorie",
diff --git a/locales/pl/common.json b/locales/pl/common.json
index 11902f795..771c2a5bf 100644
--- a/locales/pl/common.json
+++ b/locales/pl/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Kontakty",
+    "disabled_title": "Administrator wyłączył kontakty",
+    "disabled_description": "Jeśli ich potrzebujesz, skontaktuj się z administratorem.",
+    "drag_count": "{count, plural, one {1 kontakt} few {# kontakty} other {# kontaktów}}",
     "search_placeholder": "Szukaj kontaktów...",
     "create_new": "Nowy kontakt",
     "no_category": "Brak kategorii",
diff --git a/locales/pt/common.json b/locales/pt/common.json
index 9dfb9ae5f..967a0af47 100644
--- a/locales/pt/common.json
+++ b/locales/pt/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Contatos",
+    "disabled_title": "Os contatos foram desativados pelo administrador",
+    "disabled_description": "Peça ao administrador se precisar deles.",
+    "drag_count": "{count, plural, one {1 contato} other {# contatos}}",
     "search_placeholder": "Pesquisar contatos...",
     "create_new": "Novo contato",
     "no_category": "Sem categoria",
diff --git a/locales/ro/common.json b/locales/ro/common.json
index 8141b590a..63bd99c0b 100644
--- a/locales/ro/common.json
+++ b/locales/ro/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Contacte",
+    "disabled_title": "Contactele au fost dezactivate de administrator",
+    "disabled_description": "Contactați administratorul dacă aveți nevoie de ele.",
+    "drag_count": "{count, plural, one {1 contact} other {# contacte}}",
     "search_placeholder": "Căutare contacte...",
     "create_new": "Contact nou",
     "no_category": "Fără categorie",
diff --git a/locales/ru/common.json b/locales/ru/common.json
index 719e7d27a..b47bb8dbc 100644
--- a/locales/ru/common.json
+++ b/locales/ru/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Контакты",
+    "disabled_title": "Администратор отключил контакты",
+    "disabled_description": "Обратитесь к администратору, если они вам нужны.",
+    "drag_count": "{count, plural, one {# контакт} few {# контакта} other {# контактов}}",
     "search_placeholder": "Поиск контактов...",
     "create_new": "Новый контакт",
     "no_category": "Без категории",
diff --git a/locales/sk/common.json b/locales/sk/common.json
index 28a87b473..449497a94 100644
--- a/locales/sk/common.json
+++ b/locales/sk/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Kontakty",
+    "disabled_title": "Kontakty vypol správca",
+    "disabled_description": "Ak ich potrebujete, obráťte sa na správcu.",
+    "drag_count": "{count, plural, one {1 kontakt} few {# kontakty} other {# kontaktov}}",
     "search_placeholder": "Hľadať kontakty...",
     "create_new": "Nový kontakt",
     "no_category": "Bez kategórie",
diff --git a/locales/th/common.json b/locales/th/common.json
index 4ba304226..2fb4984ac 100644
--- a/locales/th/common.json
+++ b/locales/th/common.json
@@ -2258,6 +2258,9 @@
       }
     },
     "title": "ผู้ติดต่อ",
+    "disabled_title": "ผู้ดูแลระบบปิดรายชื่อติดต่อ",
+    "disabled_description": "ติดต่อผู้ดูแลระบบหากคุณต้องการใช้",
+    "drag_count": "{count, plural, other {ผู้ติดต่อ # รายการ}}",
     "search_placeholder": "ค้นหาผู้ติดต่อ...",
     "create_new": "ผู้ติดต่อใหม่",
     "no_category": "ไม่มีหมวดหมู่",
diff --git a/locales/tr/common.json b/locales/tr/common.json
index 4f1089cd5..3d2c1a55d 100644
--- a/locales/tr/common.json
+++ b/locales/tr/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Kişiler",
+    "disabled_title": "Kişiler yöneticiniz tarafından kapatıldı",
+    "disabled_description": "İhtiyacınız varsa yöneticinize başvurun.",
+    "drag_count": "{count, plural, one {1 kişi} other {# kişi}}",
     "search_placeholder": "Kişilerde ara...",
     "create_new": "Yeni Kişi",
     "no_category": "Kategori Yok",
diff --git a/locales/uk/common.json b/locales/uk/common.json
index 0c07b3b30..09a849b7f 100644
--- a/locales/uk/common.json
+++ b/locales/uk/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "Контакти",
+    "disabled_title": "Адміністратор вимкнув контакти",
+    "disabled_description": "Зверніться до адміністратора, якщо вони вам потрібні.",
+    "drag_count": "{count, plural, one {# контакт} few {# контакти} other {# контактів}}",
     "search_placeholder": "Пошук контактів...",
     "create_new": "Новий контакт",
     "no_category": "Без категорії",
diff --git a/locales/zh-TW/common.json b/locales/zh-TW/common.json
index 5a9e4b0a5..a4ea5a287 100644
--- a/locales/zh-TW/common.json
+++ b/locales/zh-TW/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "聯絡人",
+    "disabled_title": "管理員已關閉聯絡人",
+    "disabled_description": "如需使用，請聯絡管理員。",
+    "drag_count": "{count, plural, other {# 位聯絡人}}",
     "search_placeholder": "搜尋聯絡人…",
     "create_new": "新增聯絡人",
     "no_category": "無類別",
diff --git a/locales/zh/common.json b/locales/zh/common.json
index 4746263b6..92101c2d3 100644
--- a/locales/zh/common.json
+++ b/locales/zh/common.json
@@ -2904,6 +2904,9 @@
       }
     },
     "title": "联系人",
+    "disabled_title": "管理员已关闭联系人",
+    "disabled_description": "如需使用，请联系管理员。",
+    "drag_count": "{count, plural, other {# 个联系人}}",
     "search_placeholder": "搜索联系人...",
     "create_new": "新联系人",
     "no_category": "没有类别",