feat: GroupPanel + toolbar reorder (New, View, Search, Filter, Sort, Group)

frontend/src/components/contacts/GroupPanel.tsx

@@ -0,0 +1,415 @@
+/**
+ * SmartSuite-style Group Panel for contacts.
+ * Multi-field grouping with priority ordering.
+ */
+
+import React, { useState, useRef, useEffect, useMemo } from 'react';
+import { Group as GroupIcon, Plus, X } from 'lucide-react';
+import type { UnifiedContact } from '@/api/unifiedContacts';
+
+// ─── Field definitions ────────────────────────────────────────────────────────
+
+type FieldType = 'text' | 'number' | 'select' | 'date';
+
+interface GroupFieldDef {
+  key: string;
+  label: string;
+  type: FieldType;
+  group?: 'general' | 'company' | 'person' | 'address' | 'notes' | 'meta';
+}
+
+const GROUP_FIELDS: GroupFieldDef[] = [
+  // General
+  { key: 'type', label: 'Typ', type: 'select', group: 'general' },
+  { key: 'displayname', label: 'Anzeigename', type: 'text', group: 'general' },
+  { key: 'email_1', label: 'E-Mail 1', type: 'text', group: 'general' },
+  { key: 'phone_1', label: 'Telefon 1', type: 'text', group: 'general' },
+  { key: 'website', label: 'Website', type: 'text', group: 'general' },
+  { key: 'tags', label: 'Tags', type: 'text', group: 'general' },
+
+  // Company
+  { key: 'name', label: 'Firmenname', type: 'text', group: 'company' },
+  { key: 'code', label: 'Kunden-Nr.', type: 'text', group: 'company' },
+  { key: 'accounting_code', label: 'Buchhaltungs-Code', type: 'text', group: 'company' },
+  { key: 'vat_code', label: 'USt-IdNr.', type: 'text', group: 'company' },
+  { key: 'fiscal_code', label: 'Steuernummer', type: 'text', group: 'company' },
+  { key: 'commerce_code', label: 'Handelsregister-Nr.', type: 'text', group: 'company' },
+  { key: 'bic', label: 'BIC', type: 'text', group: 'company' },
+  { key: 'bank_account', label: 'Bankkonto', type: 'text', group: 'company' },
+
+  // Person
+  { key: 'firstname', label: 'Vorname', type: 'text', group: 'person' },
+  { key: 'surname', label: 'Nachname', type: 'text', group: 'person' },
+  { key: 'suffix', label: 'Suffix', type: 'text', group: 'person' },
+  { key: 'gender', label: 'Geschlecht', type: 'select', group: 'person' },
+  { key: 'ext_name_line', label: 'Zusatzname', type: 'text', group: 'person' },
+
+  // Address
+  { key: 'mailing_street', label: 'Straße (Post)', type: 'text', group: 'address' },
+  { key: 'mailing_postalcode', label: 'PLZ (Post)', type: 'text', group: 'address' },
+  { key: 'mailing_city', label: 'Stadt (Post)', type: 'text', group: 'address' },
+  { key: 'mailing_state', label: 'Bundesland (Post)', type: 'text', group: 'address' },
+  { key: 'mailing_country', label: 'Land (Post)', type: 'text', group: 'address' },
+  { key: 'visit_city', label: 'Stadt (Besuch)', type: 'text', group: 'address' },
+  { key: 'visit_postalcode', label: 'PLZ (Besuch)', type: 'text', group: 'address' },
+  { key: 'invoice_city', label: 'Stadt (Rechnung)', type: 'text', group: 'address' },
+  { key: 'invoice_postalcode', label: 'PLZ (Rechnung)', type: 'text', group: 'address' },
+
+  // Notes
+  { key: 'projectnote', label: 'Projektnotiz', type: 'text', group: 'notes' },
+  { key: 'projectnote_title', label: 'Notiztitel', type: 'text', group: 'notes' },
+  { key: 'contact_warning', label: 'Warnung', type: 'text', group: 'notes' },
+
+  // Meta
+  { key: 'folder_id', label: 'Ordner-ID', type: 'text', group: 'meta' },
+  { key: 'created_at', label: 'Erstellt am', type: 'date', group: 'meta' },
+  { key: 'updated_at', label: 'Geändert am', type: 'date', group: 'meta' },
+];
+
+// ─── Types ────────────────────────────────────────────────────────────────────
+
+export interface GroupCondition {
+  id: string;
+  field: string;
+}
+
+export interface GroupState {
+  conditions: GroupCondition[];
+}
+
+export const emptyGroupState: GroupState = {
+  conditions: [],
+};
+
+// ─── Group logic ──────────────────────────────────────────────────────────────
+
+function getFieldValue(contact: UnifiedContact, field: string): any {
+  return (contact as any)[field];
+}
+
+export interface GroupedContacts {
+  key: string;
+  label: string;
+  contacts: UnifiedContact[];
+}
+
+export function applyGrouping(contacts: UnifiedContact[], groupState: GroupState): GroupedContacts[] {
+  if (!groupState.conditions.length) {
+    return [{ key: 'all', label: 'Alle', contacts }];
+  }
+
+  // Multi-level grouping
+  let groups: GroupedContacts[] = [{ key: 'all', label: 'Alle', contacts: [...contacts] }];
+
+  for (const cond of groupState.conditions) {
+    const def = GROUP_FIELDS.find((f) => f.key === cond.field);
+    if (!def) continue;
+
+    const newGroups: GroupedContacts[] = [];
+    for (const group of groups) {
+      const subGroups = new Map<string, UnifiedContact[]>();
+      for (const contact of group.contacts) {
+        const val = getFieldValue(contact, cond.field);
+        const groupKey = val == null || val === '' ? '(leer)' : String(val);
+        if (!subGroups.has(groupKey)) {
+          subGroups.set(groupKey, []);
+        }
+        subGroups.get(groupKey)!.push(contact);
+      }
+      // Sort group keys alphabetically
+      const sortedKeys = Array.from(subGroups.keys()).sort((a, b) => {
+        if (a === '(leer)') return 1;
+        if (b === '(leer)') return -1;
+        return a.localeCompare(b);
+      });
+      for (const key of sortedKeys) {
+        const label = group.key === 'all'
+          ? `${def.label}: ${key}`
+          : `${group.label} > ${key}`;
+        newGroups.push({ key: `${group.key}::${key}`, label, contacts: subGroups.get(key)! });
+      }
+    }
+    groups = newGroups;
+  }
+
+  return groups;
+}
+
+// ─── Context-sensitive field ordering ──────────────────────────────────────────
+
+function getOrderedFields(contactType?: 'company' | 'person' | undefined): GroupFieldDef[] {
+  if (contactType === 'company') {
+    const order = ['general', 'company', 'address', 'notes', 'meta', 'person'];
+    return [...GROUP_FIELDS].sort((a, b) => order.indexOf(a.group || 'general') - order.indexOf(b.group || 'general'));
+  }
+  if (contactType === 'person') {
+    const order = ['general', 'person', 'address', 'notes', 'meta', 'company'];
+    return [...GROUP_FIELDS].sort((a, b) => order.indexOf(a.group || 'general') - order.indexOf(b.group || 'general'));
+  }
+  const order = ['general', 'company', 'person', 'address', 'notes', 'meta'];
+  return [...GROUP_FIELDS].sort((a, b) => order.indexOf(a.group || 'general') - order.indexOf(b.group || 'general'));
+}
+
+// ─── Component ────────────────────────────────────────────────────────────────
+
+interface GroupPanelProps {
+  groupState: GroupState;
+  onGroupChange: (groupState: GroupState) => void;
+  contactType?: 'company' | 'person' | undefined;
+}
+
+let groupIdCounter = 0;
+function newGroupId() {
+  return `grp-${Date.now()}-${++groupIdCounter}`;
+}
+
+export function GroupPanel({ groupState, onGroupChange, contactType }: GroupPanelProps) {
+  const [open, setOpen] = useState(false);
+  const btnRef = useRef<HTMLDivElement>(null);
+  const panelRef = useRef<HTMLDivElement>(null);
+  const [panelPos, setPanelPos] = useState({ top: 0, left: 0 });
+
+  useEffect(() => {
+    if (!open) return;
+    const handler = (e: MouseEvent) => {
+      const target = e.target as Node;
+      if (btnRef.current?.contains(target) || panelRef.current?.contains(target)) return;
+      setOpen(false);
+    };
+    document.addEventListener('mousedown', handler);
+    return () => document.removeEventListener('mousedown', handler);
+  }, [open]);
+
+  const handleToggle = () => {
+    if (!open && btnRef.current) {
+      const rect = btnRef.current.getBoundingClientRect();
+      setPanelPos({ top: rect.bottom + 4, left: rect.left });
+    }
+    setOpen(!open);
+  };
+
+  const orderedFields = useMemo(() => getOrderedFields(contactType), [contactType]);
+  const activeCount = groupState.conditions.length;
+
+  const addCondition = () => {
+    onGroupChange({
+      conditions: [...groupState.conditions, {
+        id: newGroupId(),
+        field: orderedFields[0]?.key || 'type',
+      }],
+    });
+  };
+
+  const removeCondition = (id: string) => {
+    onGroupChange({
+      conditions: groupState.conditions.filter((c) => c.id !== id),
+    });
+  };
+
+  const updateCondition = (id: string, updates: Partial<GroupCondition>) => {
+    onGroupChange({
+      conditions: groupState.conditions.map((c) =>
+        c.id === id ? { ...c, ...updates } : c
+      ),
+    });
+  };
+
+  const clearAll = () => {
+    onGroupChange({ ...emptyGroupState });
+  };
+
+  const moveCondition = (id: string, direction: 'up' | 'down') => {
+    const conds = [...groupState.conditions];
+    const idx = conds.findIndex((c) => c.id === id);
+    if (idx < 0) return;
+    const newIdx = direction === 'up' ? idx - 1 : idx + 1;
+    if (newIdx < 0 || newIdx >= conds.length) return;
+    [conds[idx], conds[newIdx]] = [conds[newIdx], conds[idx]];
+    onGroupChange({ conditions: conds });
+  };
+
+  // Group fields for dropdown
+  const groupedFields = useMemo(() => {
+    const groups: Record<string, GroupFieldDef[]> = {};
+    for (const f of orderedFields) {
+      const g = f.group || 'general';
+      if (!groups[g]) groups[g] = [];
+      groups[g].push(f);
+    }
+    return groups;
+  }, [orderedFields]);
+
+  const groupLabels: Record<string, string> = {
+    general: 'Allgemein',
+    company: 'Firma',
+    person: 'Person',
+    address: 'Adresse',
+    notes: 'Notizen',
+    meta: 'Metadaten',
+  };
+
+  return (
+    <>
+      <div ref={btnRef} className="relative flex-shrink-0">
+        <button
+          onClick={handleToggle}
+          title="Gruppierung"
+          aria-label="Gruppierung"
+          className={`
+            inline-flex items-center gap-1.5 px-2 py-1 rounded text-xs font-medium
+            transition-colors duration-100 cursor-pointer relative
+            ${open || activeCount > 0 ? 'bg-primary-100 text-primary-700' : 'text-secondary-600 hover:bg-secondary-100 hover:text-secondary-900'}
+          `}
+        >
+          <GroupIcon className="w-3.5 h-3.5" strokeWidth={2} />
+          {activeCount > 0 && (
+            <span className="inline-flex items-center justify-center min-w-[16px] h-4 px-1 text-[10px] font-bold rounded-full bg-primary-600 text-white">
+              {activeCount}
+            </span>
+          )}
+          <svg className={`w-3 h-3 transition-transform ${open ? 'rotate-180' : ''}`} fill="none" stroke="currentColor" strokeWidth={2} viewBox="0 0 24 24">
+            <polyline points="6 9 12 15 18 9" />
+          </svg>
+        </button>
+      </div>
+
+      {open && (
+        <div
+          ref={panelRef}
+          className="fixed bg-white border border-secondary-200 rounded-lg shadow-lg"
+          style={{
+            top: panelPos.top,
+            left: panelPos.left,
+            width: '420px',
+            maxHeight: '70vh',
+            overflowY: 'auto',
+            zIndex: 3000,
+          }}
+        >
+          {/* Header */}
+          <div className="flex items-center justify-between px-4 py-3 border-b border-secondary-100">
+            <span className="text-sm font-semibold text-secondary-800">Gruppierung</span>
+            <div className="flex items-center gap-2">
+              {activeCount > 0 && (
+                <button
+                  onClick={clearAll}
+                  className="text-xs text-secondary-500 hover:text-red-600 transition-colors"
+                >
+                  Alle löschen
+                </button>
+              )}
+              <button
+                onClick={() => setOpen(false)}
+                className="p-1 rounded hover:bg-secondary-100 text-secondary-400 hover:text-secondary-600"
+              >
+                <X className="w-3.5 h-3.5" />
+              </button>
+            </div>
+          </div>
+
+          {/* Info text */}
+          {activeCount === 0 && (
+            <div className="px-4 py-3 border-b border-secondary-100">
+              <div className="text-center py-4 text-xs text-secondary-400">
+                Keine Gruppierung aktiv. Alle Datensätze werden in einer flachen Liste angezeigt.
+              </div>
+            </div>
+          )}
+
+          {/* Active group badges */}
+          {activeCount > 0 && (
+            <div className="flex flex-wrap gap-1.5 px-4 py-2 border-b border-secondary-100">
+              {groupState.conditions.map((cond, idx) => {
+                const def = GROUP_FIELDS.find((f) => f.key === cond.field);
+                return (
+                  <span
+                    key={cond.id}
+                    className="inline-flex items-center gap-1 px-2 py-0.5 text-[11px] rounded-full bg-primary-50 text-primary-700 border border-primary-200"
+                  >
+                    <span className="font-bold text-primary-500">{idx + 1}.</span>
+                    {def?.label}
+                    <button onClick={() => removeCondition(cond.id)} className="hover:text-red-600">
+                      <X className="w-3 h-3" />
+                    </button>
+                  </span>
+                );
+              })}
+            </div>
+          )}
+
+          {/* Group rows */}
+          <div className="px-4 py-3 space-y-2">
+            {groupState.conditions.map((cond, idx) => (
+              <div key={cond.id} className="flex items-center gap-1.5">
+                {/* Priority number + reorder */}
+                <div className="flex flex-col items-center w-6 flex-shrink-0">
+                  <span className="text-[10px] font-bold text-primary-600">{idx + 1}</span>
+                  <div className="flex flex-col">
+                    <button
+                      onClick={() => moveCondition(cond.id, 'up')}
+                      disabled={idx === 0}
+                      className="text-secondary-300 hover:text-secondary-600 disabled:opacity-30 leading-none"
+                    >
+                      <svg className="w-3 h-3" fill="none" stroke="currentColor" strokeWidth={2.5} viewBox="0 0 24 24">
+                        <polyline points="18 15 12 9 6 15" />
+                      </svg>
+                    </button>
+                    <button
+                      onClick={() => moveCondition(cond.id, 'down')}
+                      disabled={idx === groupState.conditions.length - 1}
+                      className="text-secondary-300 hover:text-secondary-600 disabled:opacity-30 leading-none"
+                    >
+                      <svg className="w-3 h-3" fill="none" stroke="currentColor" strokeWidth={2.5} viewBox="0 0 24 24">
+                        <polyline points="6 9 12 15 18 9" />
+                      </svg>
+                    </button>
+                  </div>
+                </div>
+
+                {/* Field dropdown */}
+                <select
+                  value={cond.field}
+                  onChange={(e) => updateCondition(cond.id, { field: e.target.value })}
+                  className="flex-1 min-w-0 px-2 py-1.5 text-xs border border-secondary-200 rounded bg-white cursor-pointer focus:outline-none focus:border-primary-400"
+                >
+                  {Object.entries(groupedFields).map(([group, fields]) => (
+                    <optgroup key={group} label={groupLabels[group] || group}>
+                      {fields.map((f) => (
+                        <option key={f.key} value={f.key}>{f.label}</option>
+                      ))}
+                    </optgroup>
+                  ))}
+                </select>
+
+                {/* Remove button */}
+                <button
+                  onClick={() => removeCondition(cond.id)}
+                  className="p-1 rounded hover:bg-red-50 text-secondary-400 hover:text-red-600 transition-colors flex-shrink-0"
+                >
+                  <X className="w-3.5 h-3.5" />
+                </button>
+              </div>
+            ))}
+          </div>
+
+          {/* Footer */}
+          <div className="flex items-center justify-between px-4 py-3 border-t border-secondary-100">
+            <button
+              onClick={addCondition}
+              className="inline-flex items-center gap-1 px-2 py-1 text-xs font-medium text-primary-600 hover:bg-primary-50 rounded transition-colors"
+            >
+              <Plus className="w-3.5 h-3.5" />
+              Gruppierung hinzufügen
+            </button>
+            <button
+              onClick={() => setOpen(false)}
+              className="px-3 py-1 text-xs font-medium text-white bg-primary-600 hover:bg-primary-700 rounded transition-colors"
+            >
+              Fertig
+            </button>
+          </div>
+        </div>
+      )}
+    </>
+  );
+}

frontend/src/pages/ContactsList.tsx

@@ -22,6 +22,7 @@ import type { Tag } from '@/api/tags';
 import { ArrowDownAZ, ArrowUpZA, Bookmark, ChevronLeft, ExternalLink, LayoutGrid, List, Plus, Printer, Table2 } from 'lucide-react';
 import { FilterPanel, applyFilters, emptyFilterState, type FilterState } from '@/components/contacts/FilterPanel';
 import { SortPanel, applySorting, emptySortState, type SortState } from '@/components/contacts/SortPanel';
+import { GroupPanel, applyGrouping, emptyGroupState, type GroupState, type GroupedContacts } from '@/components/contacts/GroupPanel';
 import {
   useUnifiedContacts,
   useUnifiedContact,
@@ -46,6 +47,7 @@ export function ContactsListPage() {
   const [selectedTags, setSelectedTags] = useState<Tag[]>([]);
   const [filterState, setFilterState] = useState<FilterState>(emptyFilterState);
   const [sortState, setSortState] = useState<SortState>(emptySortState);
+  const [groupState, setGroupState] = useState<GroupState>(emptyGroupState);
   const openWindow = useWindowStore((s) => s.openWindow);
 
   // Debounce search
@@ -120,6 +122,9 @@ export function ContactsListPage() {
     return result;
   }, [contacts, tagFilter, filterState, sortState]);
 
+  // Apply GroupPanel grouping
+  const groupedContacts = useMemo(() => applyGrouping(filteredContacts, groupState), [filteredContacts, groupState]);
+
   // Handle folder selection
   const handleSelectFilter = useCallback((filter: ContactFilter) => {
     setSelectedFilter(filter);
@@ -209,6 +214,32 @@ export function ContactsListPage() {
 
   useEffect(() => {
     const items = [
+      // New contact — ganz links
+      {
+        id: 'new',
+        plugin: 'contacts',
+        label: t('contacts.create'),
+        type: 'button' as const,
+        group: 'create',
+        icon: <Plus className="w-3.5 h-3.5" strokeWidth={2} />,
+        onClick: handleCreate,
+      },
+      // View mode dropdown (list / table / cards)
+      {
+        id: 'view-mode',
+        plugin: 'contacts',
+        label: t('common.view', 'Ansicht'),
+        type: 'dropdown' as const,
+        group: 'view',
+        icon: <LayoutGrid className="w-3.5 h-3.5" strokeWidth={2} />,
+        menuWidth: '180px',
+        menuOptions: [
+          { value: 'list', label: t('contacts.viewList'), icon: <List className="w-3.5 h-3.5" strokeWidth={2} />, active: viewMode === 'list', onClick: () => setViewMode('list') },
+          { value: 'table', label: t('contacts.viewTable'), icon: <Table2 className="w-3.5 h-3.5" strokeWidth={2} />, active: viewMode === 'table', onClick: () => setViewMode('table') },
+          { value: 'cards', label: t('contacts.viewCards'), icon: <LayoutGrid className="w-3.5 h-3.5" strokeWidth={2} />, active: viewMode === 'cards', onClick: () => setViewMode('cards') },
+        ],
+        onClick: () => {},
+      },
       // Search
       {
         id: 'search',
@@ -252,20 +283,20 @@ export function ContactsListPage() {
         ),
         onClick: () => {},
       },
-      // View mode dropdown (list / table / cards)
+      // GroupPanel — SmartSuite-style multi-field grouping
       {
-        id: 'view-mode',
+        id: 'group-panel',
         plugin: 'contacts',
-        label: t('common.view', 'Ansicht'),
-        type: 'dropdown' as const,
-        group: 'view',
-        icon: <LayoutGrid className="w-3.5 h-3.5" strokeWidth={2} />,
-        menuWidth: '180px',
-        menuOptions: [
-          { value: 'list', label: t('contacts.viewList'), icon: <List className="w-3.5 h-3.5" strokeWidth={2} />, active: viewMode === 'list', onClick: () => setViewMode('list') },
-          { value: 'table', label: t('contacts.viewTable'), icon: <Table2 className="w-3.5 h-3.5" strokeWidth={2} />, active: viewMode === 'table', onClick: () => setViewMode('table') },
-          { value: 'cards', label: t('contacts.viewCards'), icon: <LayoutGrid className="w-3.5 h-3.5" strokeWidth={2} />, active: viewMode === 'cards', onClick: () => setViewMode('cards') },
-        ],
+        label: 'Gruppierung',
+        type: 'custom' as const,
+        group: 'group',
+        customComponent: (
+          <GroupPanel
+            groupState={groupState}
+            onGroupChange={setGroupState}
+            contactType={contactType}
+          />
+        ),
         onClick: () => {},
       },
       // Saved filters
@@ -278,16 +309,6 @@ export function ContactsListPage() {
         icon: <Bookmark className="w-3.5 h-3.5" strokeWidth={2} />,
         onClick: () => setSavedFiltersOpen(true),
       },
-      // New contact
-      {
-        id: 'new',
-        plugin: 'contacts',
-        label: t('contacts.create'),
-        type: 'button' as const,
-        group: 'actions',
-        icon: <Plus className="w-3.5 h-3.5" strokeWidth={2} />,
-        onClick: handleCreate,
-      },
       // Print
       {
         id: 'print',
@@ -311,7 +332,7 @@ export function ContactsListPage() {
     ];
     registerItems('contacts', items);
     return () => unregisterPlugin('contacts');
-  }, [handleSearch, handleCreate, handleSelectFilter, t, registerItems, unregisterPlugin, selectedFilter, viewMode, sortOptions, viewModeOptions, filterState, contactType, sortState]);
+  }, [handleSearch, handleCreate, handleSelectFilter, t, registerItems, unregisterPlugin, selectedFilter, viewMode, sortOptions, viewModeOptions, filterState, contactType, sortState, groupState]);
 
   return (
     <div className="flex flex-col h-full" data-testid="contacts-list-page">