Chengdong ZhangandCursor
53548196f8
Capture exclusive promotion composition, empty-group cancel, and mall surface scope so the five marketing changes can be implemented without stacking or lifecycle ambiguity. Co-authored-by: Cursor <cursoragent@cursor.com>
26 lines
1.7 KiB
Markdown
26 lines
1.7 KiB
Markdown
## ADDED Requirements
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### Requirement: Shop flash-sale configuration
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Shop users SHALL manage only their own timed flash-sale sessions and SKU activity items. An item SHALL have a fixed minor-unit sale price, currency, reserved stock, per-customer limit, and belong to an active SKU owned by the session shop. The service SHALL reject a SKU that already has an overlapping active group-buying activity.
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#### Scenario: cross-shop SKU rejected
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- **WHEN** a merchant adds another shop's SKU to a flash-sale session
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- **THEN** the API rejects it without creating an activity item
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#### Scenario: overlapping group-buy SKU rejected
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- **WHEN** a merchant adds a SKU that already has an overlapping active group-buying activity
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- **THEN** the API rejects it without creating an activity item
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### Requirement: Public active flash-sale discovery
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Customers SHALL list active sessions and their eligible products with current sale price, remaining activity stock, and sell-through information. Inactive, disabled, or elapsed items SHALL not be purchasable as flash-sale items.
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#### Scenario: window closes
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- **WHEN** a session end time has passed
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- **THEN** it is absent from active discovery and checkout applies the normal SKU price
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### Requirement: Flash-sale purchase limit and inventory
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Checkout SHALL enforce the activity's remaining stock and each customer's purchase limit atomically with normal SKU stock. A successful order SHALL retain the applied activity item and final price snapshot.
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#### Scenario: quantity exceeds limit
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- **WHEN** a customer checks out a flash-sale SKU above the remaining per-customer allowance
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- **THEN** only eligible activity quantity receives the activity price and any other quantity follows normal availability and price |