feat(ui): Aufgabenbrett auf der Projektseite

Vier Spalten, Karten per Ziehen verschiebbar - zwischen den Spalten und
innerhalb einer Spalte. Waehrend des Ziehens fuehrt der oertliche Zustand,
danach wird die neue Ordnung als Ganzes gespeichert; scheitert das, springt
das Brett auf den Serverstand zurueck.

Details:
- Gezogen wird am Griff links, damit ein Klick auf die Karte weiter den
  Dialog oeffnet.
- Der Spaltenwechsel passiert schon beim Darueberziehen, nicht erst beim
  Ablegen - sonst wirkt das Brett traege.
- Der Serverstand wird nur uebernommen, wenn gerade nicht gezogen wird,
  sonst spraenge die Karte mitten in der Bewegung zurueck.
- Faelligkeiten faerben sich: ueberfaellig rot, heute gelb, demnaechst
  gedaempft.

Ist "Fortschritt aus Aufgaben" eingeschaltet, wird der Regler gesperrt statt
einen Wert anzubieten, der beim naechsten Aufgabenwechsel ueberschrieben
wuerde - im Dialog wie im Kopfbereich. Die Projektkarte zeigt das Verhaeltnis
als "3/8".

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-07-26 09:29:28 +02:00
co-authored by Claude Opus 5
parent 72bcf824ce
commit 0212dad2bf
9 changed files with 736 additions and 8 deletions
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"use client";
import { useEffect, useMemo, useRef, useState } from "react";
import { useRouter } from "next/navigation";
import {
DndContext,
DragOverlay,
PointerSensor,
TouchSensor,
pointerWithin,
useDroppable,
useSensor,
useSensors,
type DragEndEvent,
type DragOverEvent,
type DragStartEvent,
} from "@dnd-kit/core";
import { restrictToWindowEdges } from "@dnd-kit/modifiers";
import { SortableContext, useSortable, verticalListSortingStrategy } from "@dnd-kit/sortable";
import { CSS } from "@dnd-kit/utilities";
import { CheckSquare, Loader2, Plus } from "lucide-react";
import type { Task, TaskStatus } from "@prisma/client";
import { TaskCard } from "@/components/tasks/TaskCard";
import { TaskDialog } from "@/components/tasks/TaskDialog";
import { TASK_STATUS_META, TASK_STATUS_ORDER } from "@/lib/tasks";
import { cn } from "@/lib/utils";
type Columns = Record<TaskStatus, Task[]>;
function group(tasks: Task[]): Columns {
const columns = { TODO: [], DOING: [], BLOCKED: [], DONE: [] } as Columns;
for (const task of [...tasks].sort((a, b) => a.position - b.position)) {
columns[task.status].push(task);
}
return columns;
}
/**
* Aufgabenbrett eines Projekts.
*
* Anders als beim Projektbrett ist die Reihenfolge innerhalb einer Spalte
* hier bedeutsam, deshalb @dnd-kit/sortable statt einfacher Ablageflaechen.
* Waehrend des Ziehens fuehrt der oertliche Zustand, danach wird die neue
* Ordnung als Ganzes gespeichert: je Spalte die vollstaendige Liste. Das ist
* wiederholbar und kommt ohne Nachrechnen von Positionen im Browser aus.
*/
export function TaskBoard({
projectId,
tasks,
progressFromTasks,
}: {
projectId: string;
tasks: Task[];
progressFromTasks: boolean;
}) {
const router = useRouter();
const [columns, setColumns] = useState<Columns>(() => group(tasks));
const [activeId, setActiveId] = useState<string | null>(null);
const [editing, setEditing] = useState<Task | null>(null);
const [creatingIn, setCreatingIn] = useState<TaskStatus | null>(null);
const [saving, setSaving] = useState(false);
const dragging = useRef(false);
// Serverstand uebernehmen, solange nicht gerade gezogen wird – sonst
// wuerde die Karte mitten in der Bewegung zurueckspringen.
useEffect(() => {
if (!dragging.current) setColumns(group(tasks));
}, [tasks]);
const sensors = useSensors(
useSensor(PointerSensor, { activationConstraint: { distance: 5 } }),
useSensor(TouchSensor, { activationConstraint: { delay: 180, tolerance: 8 } }),
);
const allTasks = useMemo(() => Object.values(columns).flat(), [columns]);
const active = activeId ? allTasks.find((task) => task.id === activeId) ?? null : null;
const total = allTasks.length;
const done = columns.DONE.length;
function containerOf(id: string): TaskStatus | null {
if (TASK_STATUS_ORDER.includes(id as TaskStatus)) return id as TaskStatus;
for (const status of TASK_STATUS_ORDER) {
if (columns[status].some((task) => task.id === id)) return status;
}
return null;
}
function onDragStart(event: DragStartEvent) {
dragging.current = true;
setActiveId(String(event.active.id));
}
/** Wechsel der Spalte passiert schon beim Darueberziehen, nicht erst beim Ablegen. */
function onDragOver(event: DragOverEvent) {
const activeKey = String(event.active.id);
const overKey = event.over ? String(event.over.id) : null;
if (!overKey) return;
const from = containerOf(activeKey);
const to = containerOf(overKey);
if (!from || !to || from === to) return;
setColumns((current) => {
const moved = current[from].find((task) => task.id === activeKey);
if (!moved) return current;
const targetIndex = current[to].findIndex((task) => task.id === overKey);
const insertAt = targetIndex >= 0 ? targetIndex : current[to].length;
return {
...current,
[from]: current[from].filter((task) => task.id !== activeKey),
[to]: [
...current[to].slice(0, insertAt),
{ ...moved, status: to },
...current[to].slice(insertAt),
],
};
});
}
async function onDragEnd(event: DragEndEvent) {
const activeKey = String(event.active.id);
const overKey = event.over ? String(event.over.id) : null;
let next = columns;
if (overKey) {
const container = containerOf(activeKey);
const overContainer = containerOf(overKey);
if (container && container === overContainer) {
const list = columns[container];
const oldIndex = list.findIndex((task) => task.id === activeKey);
const newIndex = list.findIndex((task) => task.id === overKey);
if (oldIndex >= 0 && newIndex >= 0 && oldIndex !== newIndex) {
const reordered = [...list];
const [moved] = reordered.splice(oldIndex, 1);
reordered.splice(newIndex, 0, moved);
next = { ...columns, [container]: reordered };
setColumns(next);
}
}
}
setActiveId(null);
dragging.current = false;
await persist(next);
}
async function persist(next: Columns) {
setSaving(true);
try {
const payload = {
columns: Object.fromEntries(
TASK_STATUS_ORDER.map((status) => [status, next[status].map((task) => task.id)]),
),
};
const response = await fetch(`/api/projects/${projectId}/tasks/reorder`, {
method: "PATCH",
headers: { "Content-Type": "application/json" },
body: JSON.stringify(payload),
});
if (!response.ok) throw new Error("failed");
router.refresh();
} catch {
// Zurueck auf den Serverstand – die Bewegung war dann nur optisch.
setColumns(group(tasks));
} finally {
setSaving(false);
}
}
return (
<section className="glass p-5">
<div className="mb-4 flex flex-wrap items-center justify-between gap-3">
<div className="flex items-center gap-3">
<span className="grid h-9 w-9 shrink-0 place-items-center rounded-xl bg-violet-500/12 text-violet-300">
<CheckSquare className="h-4 w-4" />
</span>
<div>
<h2 className="flex items-center gap-2 text-sm font-semibold uppercase tracking-wider text-slate-200">
Aufgaben
{total > 0 ? (
<span className="rounded-full bg-white/6 px-2 py-0.5 text-[11px] tabular-nums text-slate-400">
{done}/{total}
</span>
) : null}
{saving ? <Loader2 className="h-3 w-3 animate-spin text-slate-500" /> : null}
</h2>
<p className="mt-0.5 text-[11px] text-slate-500">
{progressFromTasks
? "Der Fortschritt des Projekts folgt diesen Aufgaben."
: "Ziehen zum Verschieben und Sortieren."}
</p>
</div>
</div>
<button
type="button"
className="btn btn-ghost px-3 py-1.5 text-xs"
onClick={() => setCreatingIn("TODO")}
>
<Plus className="h-3.5 w-3.5" />
Aufgabe
</button>
</div>
<DndContext
sensors={sensors}
collisionDetection={pointerWithin}
modifiers={[restrictToWindowEdges]}
onDragStart={onDragStart}
onDragOver={onDragOver}
onDragEnd={onDragEnd}
onDragCancel={() => {
setActiveId(null);
dragging.current = false;
setColumns(group(tasks));
}}
>
<div className="grid gap-3 sm:grid-cols-2 xl:grid-cols-4">
{TASK_STATUS_ORDER.map((status) => (
<TaskColumn
key={status}
status={status}
tasks={columns[status]}
onAdd={() => setCreatingIn(status)}
onEdit={setEditing}
/>
))}
</div>
<DragOverlay dropAnimation={{ duration: 180, easing: "cubic-bezier(0.22, 1, 0.36, 1)" }}>
{active ? <TaskCard task={active} overlay /> : null}
</DragOverlay>
</DndContext>
<TaskDialog
open={creatingIn !== null || editing !== null}
projectId={projectId}
task={editing}
initialStatus={creatingIn ?? "TODO"}
onClose={() => {
setCreatingIn(null);
setEditing(null);
}}
/>
</section>
);
}
function TaskColumn({
status,
tasks,
onAdd,
onEdit,
}: {
status: TaskStatus;
tasks: Task[];
onAdd: () => void;
onEdit: (task: Task) => void;
}) {
const meta = TASK_STATUS_META[status];
const { setNodeRef, isOver } = useDroppable({ id: status });
return (
<div
ref={setNodeRef}
data-task-column={status}
className={cn(
"flex min-h-[8rem] flex-col rounded-xl border border-white/6 bg-black/20 p-2 transition-colors",
isOver && "border-violet-400/40 bg-violet-500/6",
)}
>
<div className="mb-2 flex items-center gap-2 px-1">
<span
className="h-1.5 w-1.5 rounded-full"
style={{ backgroundColor: meta.color }}
aria-hidden="true"
/>
<h3 className="text-[11px] font-semibold uppercase tracking-wider text-slate-400">
{meta.label}
</h3>
<span className="ml-auto text-[10px] tabular-nums text-slate-600">{tasks.length}</span>
</div>
<SortableContext
items={tasks.map((task) => task.id)}
strategy={verticalListSortingStrategy}
>
<div className="flex flex-1 flex-col gap-1.5">
{tasks.map((task) => (
<SortableTask key={task.id} task={task} onEdit={onEdit} />
))}
{tasks.length === 0 ? (
<p className="rounded-lg border border-dashed border-white/8 px-2 py-4 text-center text-[10px] text-slate-600">
{isOver ? "Hier ablegen" : "leer"}
</p>
) : null}
</div>
</SortableContext>
<button
type="button"
onClick={onAdd}
className="mt-1.5 flex items-center gap-1.5 rounded-lg px-2 py-1.5 text-[11px] text-slate-600 transition-colors hover:bg-white/5 hover:text-slate-300"
>
<Plus className="h-3 w-3" />
hinzufuegen
</button>
</div>
);
}
function SortableTask({ task, onEdit }: { task: Task; onEdit: (task: Task) => void }) {
const { attributes, listeners, setNodeRef, transform, transition, isDragging } = useSortable({
id: task.id,
});
return (
<div
ref={setNodeRef}
style={{ transform: CSS.Translate.toString(transform), transition }}
className={cn(isDragging && "opacity-30")}
>
<TaskCard task={task} onEdit={onEdit} dragHandle={{ ...attributes, ...listeners }} />
</div>
);
}
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"use client";
import { AlignLeft, CalendarClock, GripVertical } from "lucide-react";
import type { Task } from "@prisma/client";
import { cn, formatDate } from "@/lib/utils";
/** Faelligkeit einordnen: ueberfaellig, heute, demnaechst. */
function dueTone(due: Date | string | null, done: boolean) {
if (!due || done) return null;
const date = new Date(due);
if (Number.isNaN(date.getTime())) return null;
const today = new Date();
today.setHours(0, 0, 0, 0);
const target = new Date(date);
target.setHours(0, 0, 0, 0);
const days = Math.round((target.getTime() - today.getTime()) / 86_400_000);
if (days < 0) return { className: "text-rose-300", label: "ueberfaellig" };
if (days === 0) return { className: "text-amber-300", label: "heute" };
if (days <= 3) return { className: "text-amber-200/70", label: null };
return { className: "text-slate-500", label: null };
}
export function TaskCard({
task,
onEdit,
dragHandle,
overlay = false,
}: {
task: Task;
onEdit?: (task: Task) => void;
dragHandle?: Record<string, unknown>;
overlay?: boolean;
}) {
const done = task.status === "DONE";
const due = dueTone(task.dueDate, done);
return (
<article
className={cn(
"group rounded-lg border border-white/8 bg-[#0b0d1c] p-2 transition-colors",
!overlay && "hover:border-white/16",
overlay && "rotate-2 cursor-grabbing shadow-2xl ring-1 ring-violet-400/40",
)}
>
<div className="flex items-start gap-1.5">
<button
type="button"
className="mt-0.5 shrink-0 cursor-grab touch-none rounded p-0.5 text-slate-700 transition-colors hover:text-slate-400 active:cursor-grabbing"
aria-label={`${task.title} verschieben`}
{...dragHandle}
>
<GripVertical className="h-3 w-3" />
</button>
<button
type="button"
onClick={() => onEdit?.(task)}
disabled={!onEdit}
className="min-w-0 flex-1 text-left"
>
<p
className={cn(
"break-words text-xs leading-snug text-slate-200",
done && "text-slate-500 line-through",
)}
>
{task.title}
</p>
{(task.description || task.dueDate || task.labels.length > 0) && (
<div className="mt-1.5 flex flex-wrap items-center gap-x-2 gap-y-1 text-[10px]">
{task.description ? (
<AlignLeft className="h-2.5 w-2.5 text-slate-600" aria-label="hat Beschreibung" />
) : null}
{task.dueDate ? (
<span className={cn("inline-flex items-center gap-1", due?.className)}>
<CalendarClock className="h-2.5 w-2.5" />
{due?.label ?? formatDate(task.dueDate)}
</span>
) : null}
{task.labels.slice(0, 3).map((label) => (
<span key={label} className="rounded bg-white/6 px-1 py-0.5 text-slate-400">
{label}
</span>
))}
</div>
)}
</button>
</div>
</article>
);
}
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"use client";
import { useEffect, useState } from "react";
import { useRouter } from "next/navigation";
import { Loader2, Trash2 } from "lucide-react";
import type { Task, TaskStatus } from "@prisma/client";
import { Modal } from "@/components/ui/Modal";
import { TASK_STATUS_META, TASK_STATUS_ORDER } from "@/lib/tasks";
import { cn, parseTags } from "@/lib/utils";
/** Datum fuer <input type="date"> – ortszeitbezogen, nicht UTC. */
function toDateInput(value: Date | string | null): string {
if (!value) return "";
const date = new Date(value);
if (Number.isNaN(date.getTime())) return "";
const offset = date.getTimezoneOffset() * 60_000;
return new Date(date.getTime() - offset).toISOString().slice(0, 10);
}
export function TaskDialog({
open,
projectId,
task,
initialStatus,
onClose,
}: {
open: boolean;
projectId: string;
task: Task | null;
initialStatus: TaskStatus;
onClose: () => void;
}) {
const router = useRouter();
const [title, setTitle] = useState("");
const [description, setDescription] = useState("");
const [status, setStatus] = useState<TaskStatus>(initialStatus);
const [dueDate, setDueDate] = useState("");
const [labels, setLabels] = useState("");
const [busy, setBusy] = useState(false);
const [error, setError] = useState<string | null>(null);
const isEdit = Boolean(task);
useEffect(() => {
if (!open) return;
setTitle(task?.title ?? "");
setDescription(task?.description ?? "");
setStatus(task?.status ?? initialStatus);
setDueDate(toDateInput(task?.dueDate ?? null));
setLabels(task?.labels.join(", ") ?? "");
setError(null);
}, [open, task, initialStatus]);
async function submit(event: React.FormEvent) {
event.preventDefault();
setBusy(true);
setError(null);
const body = {
title,
description,
status,
// Ohne Uhrzeit auf Mittag legen, damit Zeitzonenverschiebungen das
// Datum nicht auf den Vortag ziehen.
dueDate: dueDate ? `${dueDate}T12:00:00` : null,
labels: parseTags(labels),
};
try {
const response = await fetch(
isEdit ? `/api/tasks/${task?.id}` : `/api/projects/${projectId}/tasks`,
{
method: isEdit ? "PATCH" : "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify(body),
},
);
const payload = await response.json().catch(() => ({}));
if (!response.ok) throw new Error(payload.error ?? "Speichern fehlgeschlagen.");
onClose();
router.refresh();
} catch (caught) {
setError(caught instanceof Error ? caught.message : String(caught));
} finally {
setBusy(false);
}
}
async function remove() {
if (!task) return;
if (!window.confirm(`Aufgabe „${task.title}“ loeschen?`)) return;
setBusy(true);
try {
const response = await fetch(`/api/tasks/${task.id}`, { method: "DELETE" });
if (!response.ok) throw new Error("Loeschen fehlgeschlagen.");
onClose();
router.refresh();
} catch (caught) {
setError(caught instanceof Error ? caught.message : String(caught));
} finally {
setBusy(false);
}
}
return (
<Modal
open={open}
onClose={onClose}
width="md"
title={isEdit ? "Aufgabe bearbeiten" : "Neue Aufgabe"}
description={isEdit ? undefined : "Titel genuegt – alles andere ist optional."}
>
<form onSubmit={submit} className="space-y-4">
<div>
<label className="field-label" htmlFor="task-title">
Titel *
</label>
<input
id="task-title"
className="field"
value={title}
onChange={(event) => setTitle(event.target.value)}
required
maxLength={200}
autoFocus
/>
</div>
<div>
<span className="field-label">Spalte</span>
<div className="grid grid-cols-2 gap-2 sm:grid-cols-4">
{TASK_STATUS_ORDER.map((value) => {
const meta = TASK_STATUS_META[value];
return (
<button
key={value}
type="button"
onClick={() => setStatus(value)}
className={cn(
"rounded-lg border px-2 py-2 text-xs transition-all",
status === value
? "border-violet-400/60 bg-violet-500/12 text-white"
: "border-white/9 text-slate-400 hover:border-white/20",
)}
>
<span className="flex items-center justify-center gap-1.5">
<span
className="h-1.5 w-1.5 rounded-full"
style={{ backgroundColor: meta.color }}
/>
{meta.label}
</span>
</button>
);
})}
</div>
</div>
<div>
<label className="field-label" htmlFor="task-description">
Beschreibung
</label>
<textarea
id="task-description"
className="field min-h-24 resize-y font-mono text-[13px]"
value={description}
onChange={(event) => setDescription(event.target.value)}
placeholder="Markdown wird dargestellt."
/>
</div>
<div className="grid gap-4 sm:grid-cols-2">
<div>
<label className="field-label" htmlFor="task-due">
Faellig am
</label>
<input
id="task-due"
className="field"
type="date"
value={dueDate}
onChange={(event) => setDueDate(event.target.value)}
/>
</div>
<div>
<label className="field-label" htmlFor="task-labels">
Labels (kommagetrennt)
</label>
<input
id="task-labels"
className="field"
value={labels}
onChange={(event) => setLabels(event.target.value)}
placeholder="bug, ui"
/>
</div>
</div>
{error ? (
<p className="rounded-lg border border-rose-500/30 bg-rose-500/10 px-3 py-2 text-sm text-rose-200">
{error}
</p>
) : null}
<div className="flex items-center justify-between gap-2 pt-1">
{isEdit ? (
<button
type="button"
className="btn btn-danger px-3 py-1.5 text-xs"
onClick={remove}
disabled={busy}
>
<Trash2 className="h-3.5 w-3.5" />
Loeschen
</button>
) : (
<span />
)}
<div className="flex gap-2">
<button type="button" className="btn btn-ghost" onClick={onClose} disabled={busy}>
Abbrechen
</button>
<button type="submit" className="btn btn-primary" disabled={busy || !title.trim()}>
{busy ? <Loader2 className="h-4 w-4 animate-spin" /> : null}
{isEdit ? "Speichern" : "Anlegen"}
</button>
</div>
</div>
</form>
</Modal>
);
}