feat(products): 동적 카탈로그·상세 페이지 + 계좌이체 구매 모달

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/components/BankTransferModal.tsx

@@ -0,0 +1,364 @@
+'use client';
+
+import { useState, useEffect, useRef, useCallback } from 'react';
+import Link from 'next/link';
+import { createClient } from '@/lib/supabase/client';
+
+// 계좌이체 구매 모달.
+// - 열릴 때 세션 확인 → 미로그인이면 로그인 유도(구매 폼 미노출)
+// - 로그인 상태: 입금자명 + 약관 동의 → POST /api/orders
+// - 주문 금액은 서버가 DB price로 확정한다. 아래 표시 금액은 안내용일 뿐이다.
+// 접근성: role="dialog" aria-modal, Esc/backdrop 닫기, TopNav 드로어 패턴 차용.
+
+const KOR_TIGHT = { letterSpacing: '-0.02em' } as const;
+const KOR_BODY = { letterSpacing: '-0.01em' } as const;
+
+const BANK = { name: '케이뱅크', account: '100-116-337157', holder: '박재오' };
+
+interface Props {
+  product: { id: string; name: string; price: number };
+  isOpen: boolean;
+  onClose: () => void;
+}
+
+type AuthState = 'checking' | 'guest' | 'user';
+
+interface SuccessInfo {
+  orderId: string;
+  depositorName: string;
+  reused: boolean;
+}
+
+export default function BankTransferModal({ product, isOpen, onClose }: Props) {
+  const [authState, setAuthState] = useState<AuthState>('checking');
+  const [depositorName, setDepositorName] = useState('');
+  const [agreed, setAgreed] = useState(false);
+  const [submitting, setSubmitting] = useState(false);
+  const [error, setError] = useState('');
+  const [success, setSuccess] = useState<SuccessInfo | null>(null);
+  const closeBtnRef = useRef<HTMLButtonElement>(null);
+
+  const priceLabel = `₩${product.price.toLocaleString('ko-KR')}`;
+  const loginHref = `/login?next=${encodeURIComponent(`/products/${product.id}`)}`;
+
+  // 열릴 때마다 상태 초기화 + 세션 확인
+  useEffect(() => {
+    if (!isOpen) return;
+    let mounted = true;
+    setAuthState('checking');
+    setDepositorName('');
+    setAgreed(false);
+    setSubmitting(false);
+    setError('');
+    setSuccess(null);
+
+    const supabase = createClient();
+    supabase.auth
+      .getSession()
+      .then(({ data }) => {
+        if (mounted) setAuthState(data.session?.user ? 'user' : 'guest');
+      })
+      .catch(() => {
+        if (mounted) setAuthState('guest');
+      });
+
+    return () => {
+      mounted = false;
+    };
+  }, [isOpen]);
+
+  // Esc 닫기 + body 스크롤 잠금
+  useEffect(() => {
+    if (!isOpen) return;
+    const onKey = (e: KeyboardEvent) => {
+      if (e.key === 'Escape') onClose();
+    };
+    window.addEventListener('keydown', onKey);
+    const prevOverflow = document.body.style.overflow;
+    document.body.style.overflow = 'hidden';
+    return () => {
+      window.removeEventListener('keydown', onKey);
+      document.body.style.overflow = prevOverflow;
+    };
+  }, [isOpen, onClose]);
+
+  const handleSubmit = useCallback(
+    async (e: React.FormEvent) => {
+      e.preventDefault();
+      const name = depositorName.trim();
+      if (!name || !agreed || submitting) return;
+      setSubmitting(true);
+      setError('');
+      try {
+        const res = await fetch('/api/orders', {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({ productId: product.id, depositorName: name }),
+        });
+        const data = await res.json().catch(() => ({}));
+        if (!res.ok) {
+          setError(data?.error || '주문 처리 중 오류가 발생했습니다. 잠시 후 다시 시도해주세요.');
+          setSubmitting(false);
+          return;
+        }
+        setSuccess({
+          orderId: data.orderId as string,
+          depositorName: name,
+          reused: Boolean(data.reused),
+        });
+      } catch {
+        setError('네트워크 오류가 발생했습니다. 잠시 후 다시 시도해주세요.');
+      } finally {
+        setSubmitting(false);
+      }
+    },
+    [depositorName, agreed, submitting, product.id],
+  );
+
+  if (!isOpen) return null;
+
+  const canSubmit = depositorName.trim().length > 0 && agreed && !submitting;
+
+  return (
+    <div
+      className="fixed inset-0 z-[70] flex items-end sm:items-center justify-center p-0 sm:p-4"
+      style={{ background: 'rgba(15,23,42,0.45)' }}
+      onClick={onClose}
+    >
+      <div
+        role="dialog"
+        aria-modal="true"
+        aria-label={success ? '주문 접수 완료' : `${product.name} 구매`}
+        onClick={(e) => e.stopPropagation()}
+        className="w-full sm:max-w-md max-h-[92vh] overflow-y-auto rounded-t-2xl sm:rounded-2xl shadow-xl"
+        style={{ background: 'var(--jsm-surface)' }}
+      >
+        {/* 헤더 */}
+        <div
+          className="sticky top-0 flex items-center justify-between px-6 h-16 border-b"
+          style={{ background: 'var(--jsm-surface)', borderColor: 'var(--jsm-line)' }}
+        >
+          <h2
+            className="text-base font-bold break-keep"
+            style={{ color: 'var(--jsm-ink)', ...KOR_TIGHT }}
+          >
+            {success ? '주문 접수 완료' : '계좌이체 구매'}
+          </h2>
+          <button
+            ref={closeBtnRef}
+            onClick={onClose}
+            aria-label="닫기"
+            className="p-2 -mr-2 rounded-lg transition-colors duration-150"
+            style={{ color: 'var(--jsm-ink-soft)' }}
+          >
+            <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden>
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
+            </svg>
+          </button>
+        </div>
+
+        <div className="px-6 py-6">
+          {/* 상품 요약 */}
+          {!success && (
+            <div
+              className="rounded-lg border px-4 py-3.5 mb-6 flex items-center justify-between gap-3"
+              style={{ background: 'var(--jsm-surface-alt)', borderColor: 'var(--jsm-line)' }}
+            >
+              <span
+                className="text-sm font-semibold break-keep"
+                style={{ color: 'var(--jsm-ink)', ...KOR_TIGHT }}
+              >
+                {product.name}
+              </span>
+              <span
+                className="text-base font-bold shrink-0"
+                style={{ color: 'var(--jsm-ink)', ...KOR_TIGHT }}
+              >
+                {priceLabel}
+              </span>
+            </div>
+          )}
+
+          {/* ── 세션 확인 중 ── */}
+          {authState === 'checking' && !success && (
+            <div className="flex items-center justify-center py-8">
+              <div
+                className="w-6 h-6 rounded-full border-2 border-t-transparent animate-spin"
+                style={{ borderColor: 'var(--jsm-line)', borderTopColor: 'var(--jsm-accent)' }}
+              />
+            </div>
+          )}
+
+          {/* ── 미로그인 ── */}
+          {authState === 'guest' && !success && (
+            <div className="text-center py-2">
+              <p
+                className="text-sm leading-relaxed break-keep mb-5"
+                style={{ color: 'var(--jsm-ink-soft)', ...KOR_BODY }}
+              >
+                로그인 후 구매할 수 있습니다.
+              </p>
+              <Link
+                href={loginHref}
+                className="inline-flex items-center justify-center w-full py-3 rounded-lg text-sm font-semibold transition-colors"
+                style={{ background: 'var(--jsm-accent)', color: '#ffffff', ...KOR_BODY }}
+              >
+                로그인하기
+              </Link>
+            </div>
+          )}
+
+          {/* ── 로그인 상태: 구매 폼 ── */}
+          {authState === 'user' && !success && (
+            <form onSubmit={handleSubmit} className="space-y-5">
+              <div>
+                <label
+                  htmlFor="depositor-name"
+                  className="block text-sm font-medium mb-1.5"
+                  style={{ color: 'var(--jsm-ink)', ...KOR_BODY }}
+                >
+                  입금자명 <span style={{ color: 'var(--jsm-accent)' }}>*</span>
+                </label>
+                <input
+                  id="depositor-name"
+                  type="text"
+                  value={depositorName}
+                  onChange={(e) => setDepositorName(e.target.value)}
+                  placeholder="입금하실 분의 성함"
+                  required
+                  maxLength={40}
+                  disabled={submitting}
+                  className="w-full px-3.5 py-2.5 rounded-lg text-sm outline-none focus-visible:ring-2 focus-visible:ring-[var(--jsm-accent)]"
+                  style={{
+                    background: 'var(--jsm-surface)',
+                    border: '1px solid var(--jsm-line)',
+                    color: 'var(--jsm-ink)',
+                  }}
+                />
+                <p className="mt-1.5 text-xs break-keep" style={{ color: 'var(--jsm-ink-faint)', ...KOR_BODY }}>
+                  입금자명이 다르면 확인이 늦어질 수 있습니다.
+                </p>
+              </div>
+
+              <label className="flex items-start gap-2.5 cursor-pointer">
+                <input
+                  type="checkbox"
+                  checked={agreed}
+                  onChange={(e) => setAgreed(e.target.checked)}
+                  disabled={submitting}
+                  className="mt-0.5 w-4 h-4 shrink-0 accent-[var(--jsm-accent)]"
+                />
+                <span className="text-sm leading-relaxed break-keep" style={{ color: 'var(--jsm-ink-soft)', ...KOR_BODY }}>
+                  <Link
+                    href="/legal/terms"
+                    target="_blank"
+                    rel="noopener noreferrer"
+                    className="underline"
+                    style={{ color: 'var(--jsm-accent)' }}
+                  >
+                    이용약관
+                  </Link>
+                  과{' '}
+                  <Link
+                    href="/legal/refund"
+                    target="_blank"
+                    rel="noopener noreferrer"
+                    className="underline"
+                    style={{ color: 'var(--jsm-accent)' }}
+                  >
+                    환불정책
+                  </Link>
+                  에 동의합니다.
+                </span>
+              </label>
+
+              {error && (
+                <div
+                  className="px-3.5 py-3 rounded-lg text-sm break-keep"
+                  style={{ background: '#fef2f2', border: '1px solid #fecaca', color: '#dc2626', ...KOR_BODY }}
+                >
+                  {error}
+                </div>
+              )}
+
+              <button
+                type="submit"
+                disabled={!canSubmit}
+                className="w-full py-3 rounded-lg text-sm font-semibold transition-colors"
+                style={{
+                  background: canSubmit ? 'var(--jsm-accent)' : 'var(--jsm-ink-faint)',
+                  color: '#ffffff',
+                  cursor: canSubmit ? 'pointer' : 'not-allowed',
+                  ...KOR_BODY,
+                }}
+              >
+                {submitting ? '처리 중...' : '주문하기'}
+              </button>
+            </form>
+          )}
+
+          {/* ── 성공 화면 ── */}
+          {success && (
+            <div>
+              <p
+                className="text-lg font-bold mb-2 break-keep"
+                style={{ color: 'var(--jsm-ink)', ...KOR_TIGHT }}
+              >
+                {success.reused ? '이미 접수된 주문이 있습니다' : '주문이 접수되었습니다'}
+              </p>
+              <p
+                className="text-sm leading-relaxed break-keep mb-5"
+                style={{ color: 'var(--jsm-ink-soft)', ...KOR_BODY }}
+              >
+                아래 계좌로 입금해 주세요. 입금이 확인되면 마이페이지에서 다운로드할 수 있습니다.
+              </p>
+
+              <dl
+                className="rounded-lg border divide-y mb-5"
+                style={{ borderColor: 'var(--jsm-line)', background: 'var(--jsm-surface-alt)' }}
+              >
+                {[
+                  { k: '입금 계좌', v: `${BANK.name} ${BANK.account}` },
+                  { k: '예금주', v: BANK.holder },
+                  { k: '입금 금액', v: priceLabel },
+                  { k: '입금자명', v: success.depositorName },
+                ].map((row) => (
+                  <div
+                    key={row.k}
+                    className="flex items-center justify-between gap-3 px-4 py-3"
+                    style={{ borderColor: 'var(--jsm-line)' }}
+                  >
+                    <dt className="text-xs shrink-0" style={{ color: 'var(--jsm-ink-faint)', ...KOR_BODY }}>
+                      {row.k}
+                    </dt>
+                    <dd
+                      className="text-sm font-semibold text-right break-all"
+                      style={{ color: 'var(--jsm-ink)', ...KOR_BODY }}
+                    >
+                      {row.v}
+                    </dd>
+                  </div>
+                ))}
+              </dl>
+
+              <p
+                className="text-xs leading-relaxed break-keep mb-5"
+                style={{ color: 'var(--jsm-ink-faint)', ...KOR_BODY }}
+              >
+                입금 확인 후 마이페이지 → 내 제품에서 다운로드할 수 있습니다. 최대 24시간 내 처리됩니다.
+              </p>
+
+              <Link
+                href="/mypage?tab=products"
+                className="inline-flex items-center justify-center w-full py-3 rounded-lg text-sm font-semibold transition-colors"
+                style={{ background: 'var(--jsm-accent)', color: '#ffffff', ...KOR_BODY }}
+              >
+                마이페이지로
+              </Link>
+            </div>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}