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[REFACTOR] 결제 위젯 SDK를 예약 목록 진입 시점이 아니라 결제 준비 시점에 불러오기 (#213) - #214

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관련 이슈

closes #213

변경 사항

  • useTossPayment: 화면 진입 시 위젯 초기화(useEffect) 제거 → 결제 준비(prepare) 때 import("@tosspayments/payment-widget-sdk") + loadPaymentWidget
    • 위젯 불러오기와 결제 준비 요청(주문 번호·금액)을 동시에 시작 — 버튼을 누른 뒤 기다림이 둘 중 긴 쪽만큼만
    • 결제 준비가 실패하면 위젯 불러오기를 기다리지 않고 바로 안내·버튼 해제. 둘 다 성공했을 때만 결제 화면을 엶
    • 불러온 위젯은 다시 쓰고, 불러오는 중인 Promise를 공유해 연달아 눌러도 한 번만 불러옴
    • 불러오기에 실패하면 "결제 위젯을 불러오지 못했습니다" 안내 후 결제 화면을 열지 않고, 다시 누르면 다시 불러옴
  • 훅 인자 { enabled } 제거 — 로그인 상태에 맞춰 미리 초기화할 일이 없어짐. 예약 목록 화면은 useAuth를 로그인 확인(리다이렉트)용으로만 호출
  • TossPaymentWidget: 타입만 쓰므로 import type

리뷰어 참고 사항

  • 동작 변화 1 — 실패 복구: 지금은 진입 시 초기화가 한 번 실패하면 결제하기를 누를 때마다 "결제 위젯 준비 중 · 잠시 후 다시 시도해주세요"만 뜨고 새로고침 전까지 결제할 수 없습니다. 이제는 누를 때 다시 불러옵니다
  • 동작 변화 2 — 오류 우선순위: 결제 준비 요청과 위젯이 둘 다 실패하면 결제 준비 실패(서버 사유)를 먼저 알립니다
  • 위젯은 실패해도 결제 준비 요청은 이미 보냈을 수 있습니다(동시에 진행하므로). 사용자가 결제 화면을 열고 닫는 것과 같은 상태라 따로 처리하지 않았습니다
  • ⚠️ 실제 Toss 결제창(테스트 키로 결제·취소·실패 복귀)은 확인하지 못했습니다 — 이 환경에서는 js.tosspayments.com 접근이 막혀 있습니다. 머지 전 개발 환경에서 확인 부탁드립니다

추가 정보

검증

  • pnpm exec tsc --noEmit 통과 · pnpm test 275개 통과 · pnpm build 통과
  • 새 테스트 4개(진입 시 불러오지 않음 / 결제 준비 때 한 번만 불러오고 재사용 / 실패 안내 후 재시도 / 위젯 불러오기가 끝나지 않아도 결제 준비 실패를 바로 안내) — 재사용을 뺀 3개는 수정 전 코드에서 실패 확인. 기존 결제 흐름 테스트 6개는 수정 전후 모두 통과
  • /ticket/reservations 빌드 크기(main 9f9b65f ↔ head): 페이지 14.9 → 13.7 kB, First Load 160 → 159 kB. SDK 패키지 자체는 작은 로더(약 8 KB, 압축 전)라 번들 감소는 작습니다
  • 진입 시 제3자 요청(프로덕션 빌드 + API 목, Chromium):
화면 진입 후 3초 결제하기 클릭 후
main js.tosspayments.com 요청 1건 추가 없음
head 0건 1건

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Summary by CodeRabbit

  • 결제 개선

    • 결제 준비 시 결제 위젯을 불러오며, 한 번 불러온 위젯은 이후에도 재사용합니다.
    • 결제 화면의 항목 수와 금액이 결제 정보와 일치합니다.
    • 결제 준비 시점의 선택 항목을 기준으로 주문명과 결제 요청을 구성합니다.
  • 오류 처리

    • 결제 준비에 실패하면 안내를 표시하고 로딩 및 결제 화면을 종료합니다.
    • 위젯 로딩에 실패하면 결제 화면을 열지 않고, 다음 결제 준비에서 다시 시도합니다.
    • 위젯 로딩이 10초 안에 완료되지 않으면 로딩을 종료하며, 늦게 완료된 이전 요청은 무시합니다.

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Project Deployment Actions Updated
raillo-frontend Ready Ready Preview Oct 3, 2026 9:46am UTC

@SinYusi SinYusi added the ♻️ refactor label Oct 2, 2026 — with Claude
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Review in Change Stack →

Navigate logical layers of code changes, visualize relationships, and explore their blast radius.

Walkthrough

결제 위젯 SDK를 예약 화면 진입 시 로드하던 방식에서 결제 준비 시 동적으로 로드하는 방식으로 변경했습니다. 결제 준비 요청과 위젯 로딩을 함께 진행합니다. 준비 당시 선택 항목을 결제 정보에 저장해 결제 요청에 사용합니다.

Changes

결제 위젯 로딩

Layer / File(s) Summary
지연 로딩 및 결제 준비 흐름
hooks/useTossPayment.ts, hooks/useTossPayment.test.ts
prepare에서 결제 준비 요청과 위젯 로딩을 함께 시작합니다. 로드된 위젯과 진행 중인 로딩 Promise를 재사용합니다. 결제 정보에 준비 당시 선택 항목을 저장하고, requestPayment는 저장된 항목으로 주문명을 구성합니다. 로드 실패와 10초 시간 초과 시 결제 화면을 열지 않으며, 재시도 동작을 테스트합니다.
예약 화면 및 위젯 연결
app/ticket/reservations/page.tsx, components/payment/TossPaymentWidget.tsx
예약 화면에서 인증 상태 기반 enabled 옵션을 제거합니다. 결제 다이얼로그는 paymentInfo의 항목 수와 금액을 표시하고, 결제 요청에 선택 목록을 전달하지 않습니다. PaymentWidgetInstance를 타입 전용 import로 변경합니다.

Priority: ⬇️ Low

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Feature

Merge Risk: 🔵 Low · up to 9b5ba

The payment flow is mergeable with a bounded compatibility concern: restore the hook’s previous callable signature while retaining the prepared selection as the source of payment details.

Security Architecture Review

Security architecture risk: 🔵 Low · up to 9b5ba

The prepared order, amount, and selected items now stay together, and the reservation page retains its sign-in gate. The main uncertainty is whether successful server preparation can be safely abandoned and retried when widget loading fails. No introduced authorization bypass was established.

Retained concerns

  • Low · reliability · inferred: Concurrent loading introduces a path where server preparation succeeds but widget loading fails and the prepared order is discarded locally. Safe abandonment and retry depend on unverified server expiry, cleanup, or idempotency guarantees. This is an unresolved state-ownership and failure-containment concern, not a verified orphaned order or unauthorized payment.
Security review details

Security Blast Radius

  • inferred — The demonstrated exposure is the browser reservation-payment flow, its existing payment API, and the existing third-party SDK. The source changes loading timing and local state ownership; it does not demonstrate new service privileges or cross-tenant authority. Server enforcement and downstream payment exposure remain outside the verified evidence.

Trust Boundaries and Controls

  • observed — Client-selected booking IDs cross into the preparation API; returned orderId and amount feed the payment flow. The SDK request uses fixed same-origin success and failure paths. The Toss customer key remains browser-persisted and distinct from the API authentication mechanism, as in base; its account-binding semantics are not established by this client code.

Resilience and Maintainability Implications

  • observed — The preparation button is disabled while paymentLoading. Neither base nor head serializes direct concurrent prepare calls or cancels pending work on unmount. These existing limitations are not retained as introduced concerns. The changed partial-success path still requires an abandonment guarantee beyond closing the dialog or releasing the button.

Hardening Proposals

  • proposed — Establish the preparation API's abandonment contract: user and booking ownership binding, authoritative amount validation, expiry, and idempotent retry. If preparation holds durable resources, define recovery for widget failure or client departure rather than assuming a cleanup endpoint exists. Validate real SDK success, cancellation, and failure returns before rollout.
🚥 Pre-merge checks | ✅ 4
✅ Passed checks (4 passed)
Check name Status Explanation
Linked Issues check ✅ Passed #213의 코딩 요구사항을 충족합니다. useTossPayment는 화면 진입 때 위젯을 초기화하지 않고, prepare에서 SDK와 위젯을 결제 준비 요청과 병행해 불러옵니다. 성공한 위젯을 재사용하고 진행 중인 로드를 공유합니다. 로드 실패와 시간 초과 시 결제 화면을 열지 않고 다음 시도에서 다시 불러옵니다. 결제 준비 실패는 위젯 로드를 기다…
Out of Scope Changes check ✅ Passed 무관한 변경은 확인되지 않았습니다. 결제 준비 시 선택 항목을 복사하고 paymentInfo로 보존하는 변경은 비동기 준비 중 선택이 바뀌어도 결제 요청과 화면 요약이 일치하게 합니다. 예약 페이지의 useAuth 변경은 제거한 enabled 인자와 무관하게 로그인 리다이렉트를 유지합니다. 두 변경 모두 #213의 결제 준비 흐름을 지원합니다.
Title check ✅ Passed 결제 위젯 SDK를 예약 목록 진입 시점이 아닌 결제 준비 시점에 불러오는 주요 변경을 명확하고 간결하게 설명합니다.
Description check ✅ Passed 템플릿의 관련 이슈, 변경 사항, 리뷰어 참고 사항, 추가 정보 항목을 모두 작성했습니다. 구현 내용, 검증 결과, 미검증된 실제 결제 흐름도 구체적으로 설명합니다.
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Actionable comments posted: 1


  • 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @hooks/useTossPayment.ts:
- Line 109: Promise.allSettled로 두 작업의 완료를 함께 기다리는 흐름을 수정해 결제 준비 실패를 확인하는 즉시 오류
안내와 버튼 상태 처리를 실행하세요. 위젯 로딩 완료를 기다리지 않게 하고, 결제 준비와 위젯 로딩이 모두 성공한 경우에만 결제 화면을 여세요.

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  • app/ticket/reservations/page.tsx
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Inline comments:
Review comments at @hooks/useTossPayment.ts:
- Line 129: Add a timeout around the widgetResult wait after preparePayment
succeeds so a stalled load reports an error and allows finally to reset
paymentLoading. On timeout, clear the current load reference to permit retry,
and guard late completion from the timed-out load so it cannot overwrite the
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Inline comments:
Review comments at @hooks/useTossPayment.ts:
- Line 92: In the payment preparation flow, snapshot the selected items and
total when the user starts preparation, then use that snapshot for the dialog
summary and the `requestPayment` call instead of reading the live selection.
Update the preparation click handler and the dialog’s payment request wiring so
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- Around line 112-116: Update the test around useTossPayment’s prepare call so
preparePaymentMock returns a deferred promise; start preparation, change the
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Comment thread hooks/useTossPayment.test.ts
SinYusi and others added 10 commits October 3, 2026 18:39
Promise.allSettled는 두 작업이 모두 끝나야 결과를 돌려주어, 결제 준비 요청이
곧바로 실패해도 위젯(원격 스크립트) 불러오기가 늦으면 안내와 버튼 해제가 늦었다.
결제 준비 결과를 먼저 확인하고, 성공했을 때만 위젯 결과를 기다린다.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Pik8CWxm4XCVNrartgUoa1
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Inline comments:
Review comments at @hooks/useTossPayment.ts:
- Line 162: Update the requestPayment function signature to accept an optional
selection argument for compatibility with existing callers, while continuing to
derive the payment order name from paymentInfo.items.

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SinYusi merged commit 686c43a into main Oct 3, 2026
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SinYusi deleted the refactor/213-lazy-toss-sdk branch October 3, 2026 10:35

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[REFACTOR] 결제 위젯 SDK를 예약 목록 진입 시점이 아니라 결제 준비 시점에 불러오기

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