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Checkout Batch Flow | Skills Pool

技能檔案

Checkout Batch Flow

Implement/review one-transaction checkout() batching (feed → commit → buyRelics → applyRelics → monthly action) with deterministic validation, canonical ordering, and exact payment reconciliation (refund extra).

IagoPrandi0 星標2026年2月21日

職業
分類: 電子商務

技能內容

Checkout Batch Flow (1 Tx, Canonical Order)

When to use

Editing checkout(CheckoutParams) in contracts or the UI that builds the cart.
Touching pricing, fees, stock, slots, or monthly action constraints.

Goal (Definition of Done)

✅ Batch execution matches “manual” sequence semantics.
✅ Deterministic ordering and revert reasons.
✅ Payment reconciliation: msg.value >= totalCost, refund extra.

Canonical execution order (must not change)

payFeedCost(dayId) if includeFeed
commitDaily(dayId, commitHash) if present
buyRelics(scope=id/dayId/monthId, batch)
applyRelics(scope, batch)
if (enforce 1 action/day)

相關技能

快速安裝

Checkout Batch Flow

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作者: IagoPrandi
星標: 0
更新時間: 2026年2月21日
職業

本頁內容

01Checkout Batch Flow (1 Tx, Canonical Order)

setMonthlyBet/adjust

includeMonthlyAction

Validation rules

Validate dayId always; validate monthId iff monthly action is included.
All arrays must have consistent lengths (ids/qty, ids/targets).
Enforce phase gates:
- feed/commit/reveal/draw/claim constraints remain valid even in batch.
Stock rules:
- No reservation. If stock changed since UI quote, tx may revert.
Slot rules:
- Slot compatibility checks must run before applying.

Payment reconciliation

Compute totalCost = feedCost (optional) + sum(relicCosts + fees).
Require msg.value >= totalCost.
Refund msg.value - totalCost to sender (safe pattern).
Emit events as if actions were executed individually.

Deterministic errors (frontend mapping)

Standardize revert selectors/messages:

INVALID_PHASE, INVALID_DAY, INVALID_MONTH
INSUFFICIENT_PAYMENT, INSUFFICIENT_STOCK, INSUFFICIENT_SLOTS
INVALID_ARRAY_LENGTH, INVALID_TARGET, MONTHLY_RATE_LIMIT

Testing checklist

Equivalence: manual sequence vs checkout() produces same state/events.
Insufficient payment reverts.
Stock change reverts (no reservation).
Slot incompatibility reverts deterministically.
Refund correctness.

02

When to use

03Goal (Definition of Done)

04Canonical execution order (must not change)

05Validation rules

06Payment reconciliation

07Deterministic errors (frontend mapping)

08Testing checklist

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