Feature: Add i18n (en/ko/ja), 3-way theme (system/light/dark), and local demo preview mode

This commit is contained in:
2026-08-20 14:07:42 +09:00
parent 3e56120b00
commit 76f33de773
13 changed files with 1611 additions and 655 deletions
+282 -147
View File
@@ -1,28 +1,31 @@
"use client";
import { useState, useEffect, useCallback, useRef } from "react";
interface Task {
id: string; listId: string; parentId: string | null; title: string; note: string | null;
completed: boolean; completedAt: string | null; dueDate: string | null; priority: number;
sortOrder: number; createdAt: string; updatedAt: string;
children: Task[]; tags: { tag: { id: string; name: string; color: string } }[];
}
const PRIORITY_MAP = [
{ label: "None", color: "var(--text-tertiary)", icon: "" },
{ label: "Low", color: "var(--priority-low)", icon: "▼" },
{ label: "Medium", color: "var(--priority-medium)", icon: "▶" },
{ label: "High", color: "var(--priority-high)", icon: "▲" },
];
"use client";
import React, { useState, useEffect, useCallback, useRef } from "react";
import { useI18n } from "@/lib/i18n";
import { Task } from "./TaskList";
interface Props {
task: Task; listId: string;
task: Task;
listId: string;
onClose: () => void;
onUpdate: (t: Task) => void;
onDelete: () => void;
isDemo?: boolean;
onDemoUpdateTask?: (updated: Task) => void;
onDemoDeleteTask?: (id: string) => void;
}
export function TaskDetail({ task, listId, onClose, onUpdate, onDelete }: Props) {
export function TaskDetail({
task,
listId,
onClose,
onUpdate,
onDelete,
isDemo = false,
onDemoUpdateTask,
onDemoDeleteTask,
}: Props) {
const { t, lang } = useI18n();
const [title, setTitle] = useState(task.title);
const [note, setNote] = useState(task.note || "");
const [dueDate, setDueDate] = useState(task.dueDate ? task.dueDate.split("T")[0] : "");
@@ -31,12 +34,18 @@ export function TaskDetail({ task, listId, onClose, onUpdate, onDelete }: Props)
const [subtasks, setSubtasks] = useState(task.children || []);
const [saving, setSaving] = useState(false);
// Store timer + current task id in refs to prevent stale saves across task switches
const saveTimer = useRef<ReturnType<typeof setTimeout> | null>(null);
const currentTaskId = useRef(task.id);
const noteRef = useRef<HTMLTextAreaElement>(null);
// Sync state when switching to a different task — clear any pending timer first
const priorityMap = [
{ label: t("priorityNone"), color: "var(--text-tertiary)", icon: "" },
{ label: t("priorityLow"), color: "var(--priority-low)", icon: "▼" },
{ label: t("priorityMedium"), color: "var(--priority-medium)", icon: "▶" },
{ label: t("priorityHigh"), color: "var(--priority-high)", icon: "▲" },
];
// Sync state when switching task
useEffect(() => {
if (saveTimer.current) {
clearTimeout(saveTimer.current);
@@ -48,100 +57,172 @@ export function TaskDetail({ task, listId, onClose, onUpdate, onDelete }: Props)
setDueDate(task.dueDate ? task.dueDate.split("T")[0] : "");
setPriority(task.priority);
setSubtasks(task.children || []);
}, [task.id]);
}, [task.id, task.title, task.note, task.dueDate, task.priority, task.children]);
// Cleanup timer on unmount
useEffect(() => {
return () => {
if (saveTimer.current) clearTimeout(saveTimer.current);
};
}, []);
const save = useCallback(async (taskId: string, data: Record<string, unknown>) => {
// Guard: don't save if task has changed since debounce was scheduled
if (taskId !== currentTaskId.current) return;
setSaving(true);
try {
const res = await fetch(`/api/tasks/${taskId}`, {
method: "PATCH",
headers: { "Content-Type": "application/json" },
body: JSON.stringify(data),
const save = useCallback(
async (taskId: string, data: Record<string, unknown>) => {
if (taskId !== currentTaskId.current) return;
setSaving(true);
if (isDemo) {
const updatedTask: Task = {
...task,
...data,
children: subtasks,
updatedAt: new Date().toISOString(),
} as Task;
if (onDemoUpdateTask) onDemoUpdateTask(updatedTask);
onUpdate(updatedTask);
setSaving(false);
return;
}
try {
const res = await fetch(`/api/tasks/${taskId}`, {
method: "PATCH",
headers: { "Content-Type": "application/json" },
body: JSON.stringify(data),
});
if (res.ok) {
const updated = await res.json();
if (taskId === currentTaskId.current) {
onUpdate({ ...updated, children: subtasks });
}
}
} catch (err) {
console.error("[TaskDetail] save failed", err);
} finally {
if (taskId === currentTaskId.current) setSaving(false);
}
},
[isDemo, onDemoUpdateTask, onUpdate, subtasks, task]
);
const debounceSave = useCallback(
(overrides: Record<string, unknown>) => {
if (saveTimer.current) clearTimeout(saveTimer.current);
const taskId = currentTaskId.current;
saveTimer.current = setTimeout(() => save(taskId, overrides), 600);
},
[save]
);
// Insert markdown at cursor position
const insertAtCursor = useCallback(
(before: string, after = "", placeholder = "") => {
const ta = noteRef.current;
if (!ta) {
setNote((n) => {
const v = n + before + placeholder + after;
debounceSave({ note: v });
return v;
});
return;
}
const start = ta.selectionStart ?? ta.value.length;
const end = ta.selectionEnd ?? ta.value.length;
const selected = ta.value.slice(start, end) || placeholder;
const newVal = ta.value.slice(0, start) + before + selected + after + ta.value.slice(end);
setNote(newVal);
debounceSave({ note: newVal });
requestAnimationFrame(() => {
ta.focus();
ta.selectionStart = start + before.length;
ta.selectionEnd = start + before.length + selected.length;
});
if (res.ok) {
const updated = await res.json();
// Only update if we're still on the same task
if (taskId === currentTaskId.current) {
},
[debounceSave]
);
const handleToggleCompleted = useCallback(
async (newCompleted: boolean) => {
if (isDemo) {
const updatedTask: Task = {
...task,
completed: newCompleted,
completedAt: newCompleted ? new Date().toISOString() : null,
children: subtasks,
};
if (onDemoUpdateTask) onDemoUpdateTask(updatedTask);
onUpdate(updatedTask);
return;
}
try {
const res = await fetch(`/api/tasks/${task.id}`, {
method: "PATCH",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ completed: newCompleted }),
});
if (res.ok) {
const updated = await res.json();
onUpdate({ ...updated, children: subtasks });
}
} catch (err) {
console.error("[TaskDetail] toggle failed", err);
}
} catch (err) {
console.error("[TaskDetail] save failed", err);
} finally {
if (taskId === currentTaskId.current) setSaving(false);
}
}, [onUpdate, subtasks]);
const debounceSave = useCallback((overrides: Record<string, unknown>) => {
if (saveTimer.current) clearTimeout(saveTimer.current);
const taskId = currentTaskId.current;
saveTimer.current = setTimeout(() => save(taskId, overrides), 800);
}, [save]);
// Insert text at cursor position in the note textarea
const insertAtCursor = useCallback((before: string, after = "", placeholder = "") => {
const ta = noteRef.current;
if (!ta) {
setNote((n) => { const v = n + before + placeholder + after; debounceSave({ note: v }); return v; });
return;
}
const start = ta.selectionStart ?? ta.value.length;
const end = ta.selectionEnd ?? ta.value.length;
const selected = ta.value.slice(start, end) || placeholder;
const newVal = ta.value.slice(0, start) + before + selected + after + ta.value.slice(end);
setNote(newVal);
debounceSave({ note: newVal });
// Restore cursor after React re-render
requestAnimationFrame(() => {
ta.focus();
ta.selectionStart = start + before.length;
ta.selectionEnd = start + before.length + selected.length;
});
}, [debounceSave]);
const handleToggleCompleted = useCallback(async (newCompleted: boolean) => {
try {
const res = await fetch(`/api/tasks/${task.id}`, {
method: "PATCH",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ completed: newCompleted }),
});
if (res.ok) {
const updated = await res.json();
onUpdate({ ...updated, children: subtasks });
}
} catch (err) {
console.error("[TaskDetail] toggle failed", err);
}
}, [task.id, subtasks, onUpdate]);
},
[isDemo, onDemoUpdateTask, task, subtasks, onUpdate]
);
const handleDelete = useCallback(async () => {
if (!confirm("Delete this task?")) return;
if (!confirm(t("deleteTaskConfirm"))) return;
if (isDemo) {
if (onDemoDeleteTask) onDemoDeleteTask(task.id);
onDelete();
return;
}
try {
await fetch(`/api/tasks/${task.id}`, { method: "DELETE" });
onDelete();
} catch (err) {
console.error("[TaskDetail] delete failed", err);
}
}, [task.id, onDelete]);
}, [t, isDemo, onDemoDeleteTask, task.id, onDelete]);
const addSubtask = useCallback(async () => {
const t = newSubtitle.trim();
if (!t) return;
const tTitle = newSubtitle.trim();
if (!tTitle) return;
if (isDemo) {
const newSub: Task = {
id: "demo-sub-" + Date.now(),
listId,
parentId: task.id,
title: tTitle,
note: null,
completed: false,
completedAt: null,
dueDate: null,
priority: 0,
sortOrder: subtasks.length,
createdAt: new Date().toISOString(),
updatedAt: new Date().toISOString(),
children: [],
tags: [],
};
const nextSubs = [...subtasks, newSub];
setSubtasks(nextSubs);
setNewSubtitle("");
const updatedParent = { ...task, children: nextSubs };
if (onDemoUpdateTask) onDemoUpdateTask(updatedParent);
onUpdate(updatedParent);
return;
}
try {
const res = await fetch("/api/tasks", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ title: t, listId, parentId: task.id }),
body: JSON.stringify({ title: tTitle, listId, parentId: task.id }),
});
if (res.ok) {
const sub = await res.json();
@@ -155,40 +236,70 @@ export function TaskDetail({ task, listId, onClose, onUpdate, onDelete }: Props)
} catch (err) {
console.error("[TaskDetail] addSubtask failed", err);
}
}, [newSubtitle, listId, task, onUpdate]);
}, [newSubtitle, isDemo, listId, task, subtasks, onDemoUpdateTask, onUpdate]);
const toggleSubtask = useCallback(async (sub: Task) => {
try {
const res = await fetch(`/api/tasks/${sub.id}`, {
method: "PATCH",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ completed: !sub.completed }),
});
if (res.ok) {
const updated = await res.json();
const toggleSubtask = useCallback(
async (sub: Task) => {
const newCompleted = !sub.completed;
if (isDemo) {
const nextSubs = subtasks.map((s) =>
s.id === sub.id
? { ...s, completed: newCompleted, completedAt: newCompleted ? new Date().toISOString() : null }
: s
);
setSubtasks(nextSubs);
const updatedParent = { ...task, children: nextSubs };
if (onDemoUpdateTask) onDemoUpdateTask(updatedParent);
onUpdate(updatedParent);
return;
}
try {
const res = await fetch(`/api/tasks/${sub.id}`, {
method: "PATCH",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ completed: newCompleted }),
});
if (res.ok) {
const updated = await res.json();
setSubtasks((prev) => {
const next = prev.map((s) => (s.id === sub.id ? updated : s));
onUpdate({ ...task, children: next });
return next;
});
}
} catch (err) {
console.error("[TaskDetail] toggleSubtask failed", err);
}
},
[isDemo, subtasks, task, onDemoUpdateTask, onUpdate]
);
const deleteSubtask = useCallback(
async (id: string) => {
if (isDemo) {
const nextSubs = subtasks.filter((s) => s.id !== id);
setSubtasks(nextSubs);
const updatedParent = { ...task, children: nextSubs };
if (onDemoUpdateTask) onDemoUpdateTask(updatedParent);
onUpdate(updatedParent);
return;
}
try {
await fetch(`/api/tasks/${id}`, { method: "DELETE" });
setSubtasks((prev) => {
const next = prev.map((s) => (s.id === sub.id ? updated : s));
const next = prev.filter((s) => s.id !== id);
onUpdate({ ...task, children: next });
return next;
});
} catch (err) {
console.error("[TaskDetail] deleteSubtask failed", err);
}
} catch (err) {
console.error("[TaskDetail] toggleSubtask failed", err);
}
}, [task, onUpdate]);
const deleteSubtask = useCallback(async (id: string) => {
try {
await fetch(`/api/tasks/${id}`, { method: "DELETE" });
setSubtasks((prev) => {
const next = prev.filter((s) => s.id !== id);
onUpdate({ ...task, children: next });
return next;
});
} catch (err) {
console.error("[TaskDetail] deleteSubtask failed", err);
}
}, [task, onUpdate]);
},
[isDemo, subtasks, task, onDemoUpdateTask, onUpdate]
);
const completedCount = subtasks.filter((s) => s.completed).length;
const progressPct = subtasks.length > 0 ? Math.round((completedCount / subtasks.length) * 100) : 0;
@@ -204,13 +315,17 @@ export function TaskDetail({ task, listId, onClose, onUpdate, onDelete }: Props)
aria-label={task.completed ? "Mark incomplete" : "Mark complete"}
/>
<span style={{ flex: 1, fontSize: 12, color: "var(--text-tertiary)", fontWeight: 500 }}>
{saving ? "Saving" : "Auto-saved"}
{saving ? t("saving") : t("autoSaved")}
</span>
<button className="btn btn-ghost btn-sm btn-danger" id="delete-task-btn" onClick={handleDelete} title="Delete task">
<svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2"><polyline points="3 6 5 6 21 6"/><path d="M19 6l-1 14H6L5 6"/><path d="M10 11v6M14 11v6"/><path d="M9 6V4h6v2"/></svg>
<button className="btn btn-ghost btn-sm btn-danger" id="delete-task-btn" onClick={handleDelete} title={t("deleteTaskConfirm")}>
<svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
<polyline points="3 6 5 6 21 6" /><path d="M19 6l-1 14H6L5 6" /><path d="M10 11v6M14 11v6" /><path d="M9 6V4h6v2" />
</svg>
</button>
<button className="detail-close-btn" id="detail-close-btn" onClick={onClose} title="Close">
<svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2"><line x1="18" y1="6" x2="6" y2="18"/><line x1="6" y1="6" x2="18" y2="18"/></svg>
<button className="detail-close-btn" id="detail-close-btn" onClick={onClose} title={t("cancel")}>
<svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
<line x1="18" y1="6" x2="6" y2="18" /><line x1="6" y1="6" x2="18" y2="18" />
</svg>
</button>
</div>
@@ -225,7 +340,7 @@ export function TaskDetail({ task, listId, onClose, onUpdate, onDelete }: Props)
setTitle(e.target.value);
debounceSave({ title: e.target.value });
}}
placeholder="Task title"
placeholder={t("taskTitlePlaceholder")}
rows={2}
style={{
textDecoration: task.completed ? "line-through" : "none",
@@ -235,15 +350,18 @@ export function TaskDetail({ task, listId, onClose, onUpdate, onDelete }: Props)
{/* Priority */}
<div className="detail-section">
<div className="detail-section-label">Priority</div>
<div className="detail-section-label">{t("priority")}</div>
<div className="priority-selector">
{PRIORITY_MAP.map((p, i) => (
{priorityMap.map((p, i) => (
<button
key={i}
id={`priority-${i}`}
className={`priority-btn${priority === i ? ` active-${p.label.toLowerCase()}` : ""}`}
className={`priority-btn${priority === i ? ` active-${["none", "low", "medium", "high"][i]}` : ""}`}
style={{ color: priority === i ? p.color : undefined }}
onClick={() => { setPriority(i); debounceSave({ priority: i }); }}
onClick={() => {
setPriority(i);
debounceSave({ priority: i });
}}
>
{p.icon && <span style={{ color: p.color }}>{p.icon}</span>}
{p.label}
@@ -254,7 +372,7 @@ export function TaskDetail({ task, listId, onClose, onUpdate, onDelete }: Props)
{/* Due date */}
<div className="detail-section">
<div className="detail-section-label">Due Date</div>
<div className="detail-section-label">{t("dueDate")}</div>
<div style={{ display: "flex", gap: 8, alignItems: "center" }}>
<input
id="due-date-input"
@@ -270,32 +388,35 @@ export function TaskDetail({ task, listId, onClose, onUpdate, onDelete }: Props)
{dueDate && (
<button
className="btn btn-ghost btn-sm"
onClick={() => { setDueDate(""); debounceSave({ dueDate: null }); }}
onClick={() => {
setDueDate("");
debounceSave({ dueDate: null });
}}
>
Clear
{t("clear")}
</button>
)}
</div>
</div>
{/* Note / Memo */}
{/* Notes — wide memo area */}
<div className="detail-section" style={{ flex: 1 }}>
<div className="detail-section-label">Notes</div>
<div className="detail-section-label">{t("notes")}</div>
<div className="note-editor-wrap">
<div className="note-editor-toolbar">
<button className="note-toolbar-btn" title="Bold (Ctrl+B)" onClick={() => insertAtCursor("**", "**", "bold")}>B</button>
<button className="note-toolbar-btn" title="Italic (Ctrl+I)" style={{ fontStyle: "italic" }} onClick={() => insertAtCursor("*", "*", "italic")}>I</button>
<button className="note-toolbar-btn" title="Heading" onClick={() => insertAtCursor("## ", "", "Heading")}>H</button>
<button className="note-toolbar-btn" title="Bullet list" onClick={() => insertAtCursor("\n- ", "", "item")}></button>
<button className="note-toolbar-btn" title="Numbered list" onClick={() => insertAtCursor("\n1. ", "", "item")}>1.</button>
<button className="note-toolbar-btn" title="Checkbox" onClick={() => insertAtCursor("\n- [ ] ", "", "task")}></button>
<button className="note-toolbar-btn" title="Code" style={{ fontFamily: "monospace", fontSize: 11 }} onClick={() => insertAtCursor("`", "`", "code")}>{"`"}</button>
<button className="note-toolbar-btn" title={t("bold")} onClick={() => insertAtCursor("**", "**", "bold")}>B</button>
<button className="note-toolbar-btn" title={t("italic")} style={{ fontStyle: "italic" }} onClick={() => insertAtCursor("*", "*", "italic")}>I</button>
<button className="note-toolbar-btn" title={t("heading")} onClick={() => insertAtCursor("## ", "", "Heading")}>H</button>
<button className="note-toolbar-btn" title={t("bulletList")} onClick={() => insertAtCursor("\n- ", "", "item")}></button>
<button className="note-toolbar-btn" title={t("numberedList")} onClick={() => insertAtCursor("\n1. ", "", "item")}>1.</button>
<button className="note-toolbar-btn" title={t("checkbox")} onClick={() => insertAtCursor("\n- [ ] ", "", "task")}></button>
<button className="note-toolbar-btn" title={t("code")} style={{ fontFamily: "monospace", fontSize: 11 }} onClick={() => insertAtCursor("`", "`", "code")}>{"`"}</button>
</div>
<textarea
ref={noteRef}
id="note-textarea"
className="note-textarea"
placeholder={"Add notes, details, or anything you need to remember…\n\nMarkdown: **bold**, *italic*, # heading, - list, - [ ] checkbox"}
placeholder={t("notesPlaceholder")}
value={note}
onChange={(e) => {
setNote(e.target.value);
@@ -308,9 +429,11 @@ export function TaskDetail({ task, listId, onClose, onUpdate, onDelete }: Props)
{/* Sub-tasks */}
<div className="detail-section">
<div style={{ display: "flex", alignItems: "center", justifyContent: "space-between", marginBottom: 8 }}>
<div className="detail-section-label">Sub-tasks</div>
<div className="detail-section-label">{t("subtasks")}</div>
{subtasks.length > 0 && (
<span style={{ fontSize: 11, color: "var(--text-tertiary)" }}>{completedCount}/{subtasks.length}</span>
<span style={{ fontSize: 11, color: "var(--text-tertiary)" }}>
{completedCount}/{subtasks.length}
</span>
)}
</div>
@@ -339,7 +462,9 @@ export function TaskDetail({ task, listId, onClose, onUpdate, onDelete }: Props)
onClick={() => deleteSubtask(sub.id)}
aria-label="Delete subtask"
>
<svg width="10" height="10" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2"><line x1="18" y1="6" x2="6" y2="18"/><line x1="6" y1="6" x2="18" y2="18"/></svg>
<svg width="10" height="10" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
<line x1="18" y1="6" x2="6" y2="18" /><line x1="6" y1="6" x2="18" y2="18" />
</svg>
</button>
</div>
))}
@@ -347,16 +472,21 @@ export function TaskDetail({ task, listId, onClose, onUpdate, onDelete }: Props)
<span style={{ fontSize: 16, lineHeight: 1, color: "var(--accent)" }}>+</span>
<input
id="add-subtask-input"
placeholder="Add sub-task…"
placeholder={t("addSubtaskPlaceholder")}
style={{ flex: 1, background: "none", fontSize: 13, color: "var(--text-primary)" }}
value={newSubtitle}
onChange={(e) => setNewSubtitle(e.target.value)}
onKeyDown={(e) => {
if (e.key === "Enter") { e.preventDefault(); addSubtask(); }
if (e.key === "Enter") {
e.preventDefault();
addSubtask();
}
}}
/>
{newSubtitle.trim() && (
<button className="btn btn-primary btn-sm" id="add-subtask-btn" onClick={addSubtask}>Add</button>
<button className="btn btn-primary btn-sm" id="add-subtask-btn" onClick={addSubtask}>
{t("add")}
</button>
)}
</div>
</div>
@@ -364,7 +494,12 @@ export function TaskDetail({ task, listId, onClose, onUpdate, onDelete }: Props)
{/* Metadata */}
<div style={{ fontSize: 11, color: "var(--text-tertiary)", paddingTop: 8, borderTop: "1px solid var(--border)" }}>
Created {new Date(task.createdAt).toLocaleDateString("ko-KR", { year: "numeric", month: "short", day: "numeric" })}
{t("created")}{" "}
{new Date(task.createdAt).toLocaleDateString(lang === "ko" ? "ko-KR" : lang === "ja" ? "ja-JP" : "en-US", {
year: "numeric",
month: "short",
day: "numeric",
})}
</div>
</div>
</aside>