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Elijah 2026-06-27 19:19:38 -07:00
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"use client";
import { useState, useEffect, useCallback } from "react";
import Link from "next/link";
import { useParams } from "next/navigation";
import { ImportModal } from "@/components/import/ImportModal";
interface DeckItem {
id: string;
name: string;
description: string | null;
_count: { cards: number };
progress: Array<{
mode: string;
currentIndex: number;
orderJson: string;
cardResultsJson: string | null;
}>;
}
export default function FlashcardsPage() {
const params = useParams();
const classSlug = params.classSlug as string;
const [decks, setDecks] = useState<DeckItem[]>([]);
const [loading, setLoading] = useState(true);
const [showImport, setShowImport] = useState(false);
const [classId, setClassId] = useState<string>("");
const [editingId, setEditingId] = useState<string | null>(null);
const [editName, setEditName] = useState("");
const fetchDecks = useCallback(async (cId: string) => {
try {
const res = await fetch(`/api/decks/list?classId=${cId}`);
if (res.ok) {
const data = await res.json();
setDecks(Array.isArray(data) ? data : []);
}
} catch {
setDecks([]);
} finally {
setLoading(false);
}
}, []);
useEffect(() => {
async function init() {
try {
const classRes = await fetch("/api/classes");
const classes = await classRes.json();
const cls = classes.find((c: { slug: string }) => c.slug === classSlug);
if (!cls) {
setLoading(false);
return;
}
setClassId(cls.id);
fetchDecks(cls.id);
} catch {
setLoading(false);
}
}
init();
}, [classSlug, fetchDecks]);
async function handleDelete(id: string, name: string) {
if (!confirm(`Delete "${name}" and all its cards?`)) return;
await fetch(`/api/decks/${id}`, { method: "DELETE" });
setDecks((prev) => prev.filter((d) => d.id !== id));
}
async function handleRename(id: string) {
if (!editName.trim()) return;
await fetch(`/api/decks/${id}`, {
method: "PATCH",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ name: editName.trim() }),
});
setDecks((prev) =>
prev.map((d) => (d.id === id ? { ...d, name: editName.trim() } : d))
);
setEditingId(null);
}
function getProgressLabel(deck: DeckItem) {
if (!deck.progress?.length) return null;
const prog = deck.progress[0];
const order = JSON.parse(prog.orderJson) as string[];
const results = prog.cardResultsJson
? (JSON.parse(prog.cardResultsJson) as Record<string, string>)
: {};
const correctCount = Object.values(results).filter((r) => r === "correct").length;
const total = order.length;
const current = Math.min(prog.currentIndex + 1, total);
const modeLabel = prog.mode === "SHUFFLED" ? "shuffled" : "sequential";
return `${current}/${total}, ${modeLabel} · ${correctCount}`;
}
return (
<div className="max-w-6xl mx-auto px-4 sm:px-6 lg:px-8">
{/* Header */}
<div className="flex items-center justify-between mb-6">
<h2 className="text-xl font-semibold text-text-heading">Flashcard Decks</h2>
<button
onClick={() => setShowImport(true)}
className="inline-flex items-center gap-2 px-4 py-2.5 rounded-lg bg-primary text-white font-medium hover:bg-primary-hover transition-all duration-200 shadow-sm cursor-pointer"
>
<svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M4 16v1a3 3 0 003 3h10a3 3 0 003-3v-1m-4-4l-4 4m0 0l-4-4m4 4V4" />
</svg>
Import Deck
</button>
</div>
{/* Loading */}
{loading && (
<div className="grid grid-cols-1 md:grid-cols-2 gap-4">
{[1, 2].map((i) => (
<div key={i} className="bg-bg-surface rounded-xl border border-border-light p-6 animate-subtle-pulse">
<div className="h-5 bg-bg-surface-alt rounded w-2/3 mb-3" />
<div className="h-4 bg-bg-surface-alt rounded w-1/3" />
</div>
))}
</div>
)}
{/* Empty state */}
{!loading && decks.length === 0 && (
<div className="text-center py-16">
<div className="inline-flex items-center justify-center w-16 h-16 rounded-2xl bg-bg-callout mb-4">
<svg className="w-8 h-8 text-primary" fill="none" stroke="currentColor" viewBox="0 0 24 24">
<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={1.5} d="M19 11H5m14 0a2 2 0 012 2v6a2 2 0 01-2 2H5a2 2 0 01-2-2v-6a2 2 0 012-2m14 0V9a2 2 0 00-2-2M5 11V9a2 2 0 012-2m0 0V5a2 2 0 012-2h6a2 2 0 012 2v2M7 7h10" />
</svg>
</div>
<h3 className="text-lg font-semibold text-text-heading mb-1">No flashcard decks yet</h3>
<p className="text-text-secondary mb-4">Import your first deck to start studying</p>
<button
onClick={() => setShowImport(true)}
className="inline-flex items-center gap-2 px-4 py-2.5 rounded-lg bg-primary text-white font-medium hover:bg-primary-hover transition-all duration-200 cursor-pointer"
>
Import Deck
</button>
</div>
)}
{/* Deck grid */}
{!loading && decks.length > 0 && (
<div className="grid grid-cols-1 md:grid-cols-2 gap-4">
{decks.map((deck) => {
const progressLabel = getProgressLabel(deck);
return (
<div
key={deck.id}
className="group bg-bg-surface rounded-xl border border-border-light shadow-[var(--shadow-card)] hover:shadow-[var(--shadow-card-hover)] hover:border-primary/20 transition-all duration-300"
>
<div className="p-6">
{/* Name (editable) */}
{editingId === deck.id ? (
<div className="flex gap-2 mb-3">
<input
type="text"
value={editName}
onChange={(e) => setEditName(e.target.value)}
onKeyDown={(e) => e.key === "Enter" && handleRename(deck.id)}
autoFocus
className="flex-1 px-3 py-1.5 rounded-lg border border-border bg-bg-surface-alt/50 text-text-heading text-sm focus:outline-none focus:ring-2 focus:ring-primary/30"
/>
<button
onClick={() => handleRename(deck.id)}
className="text-sm text-primary hover:text-primary-hover cursor-pointer"
>
Save
</button>
<button
onClick={() => setEditingId(null)}
className="text-sm text-text-muted hover:text-text-heading cursor-pointer"
>
Cancel
</button>
</div>
) : (
<h3 className="text-lg font-semibold text-text-heading mb-1">
{deck.name}
</h3>
)}
{deck.description && (
<p className="text-sm text-text-secondary mb-3 line-clamp-2">{deck.description}</p>
)}
{/* Stats */}
<div className="flex items-center gap-3">
<span className="inline-flex items-center gap-1 px-2.5 py-1 rounded-full bg-badge-bg text-badge-text text-xs font-medium">
{deck._count.cards} {deck._count.cards === 1 ? "card" : "cards"}
</span>
{progressLabel && (
<span className="text-xs text-text-muted">{progressLabel}</span>
)}
</div>
{/* Actions */}
<div className="flex items-center gap-2 mt-4 pt-4 border-t border-border-light">
<Link
href={`/${classSlug}/flashcards/${deck.id}`}
className="flex-1 text-center py-2 px-4 rounded-lg bg-primary text-white text-sm font-medium hover:bg-primary-hover transition-all duration-200"
>
{deck.progress?.length ? "Continue" : "Study"}
</Link>
<button
onClick={() => {
setEditingId(deck.id);
setEditName(deck.name);
}}
className="p-2 rounded-lg text-text-muted hover:text-text-heading hover:bg-bg-surface-alt transition-all duration-200 cursor-pointer"
title="Rename"
>
<svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z" />
</svg>
</button>
<button
onClick={() => handleDelete(deck.id, deck.name)}
className="p-2 rounded-lg text-text-muted hover:text-error hover:bg-error-bg transition-all duration-200 cursor-pointer"
title="Delete"
>
<svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16" />
</svg>
</button>
</div>
</div>
</div>
);
})}
</div>
)}
{/* Import Modal */}
{showImport && (
<ImportModal
classId={classId}
importType="flashcards"
onClose={() => setShowImport(false)}
onImported={() => {
setShowImport(false);
setLoading(true);
// Re-fetch
window.location.reload();
}}
/>
)}
</div>
);
}