fix: inconsistent handling of purchase request #594

Sainan · 2024-12-21T17:59:31-08:00

Sainan commented

2024-12-21 17:59:31 -08:00

We typically don't 'validate' requests. In this case, this also results in some fields of the request being lost as they are not handled in the validate/parse function.

coderabbitai[bot] commented

2024-12-21 17:59:39 -08:00

(Migrated from github.com)

Walkthrough

The pull request introduces changes to two files: src/controllers/api/purchaseController.ts and src/helpers/purchaseHelpers.ts. In the purchase controller, the method of handling the purchase request has been simplified. Instead of using a transformation function toPurchaseRequest, the code now directly uses a type assertion to convert the request body to IPurchaseRequest.

In the purchase helpers file, a significant refactoring has occurred. The previous toPurchaseRequest function, which performed comprehensive validation and transformation of purchase requests, has been completely removed. Two new functions have been introduced: isSlotPurchaseName and parseSlotPurchaseName. These functions focus specifically on validating slot purchase names by checking their presence in a predefined mapping.

The changes represent a shift in type handling and validation approach, moving from a comprehensive request transformation method to a more targeted validation of specific purchase name attributes. The modifications suggest a simplification of the type conversion process and a more focused approach to validating purchase-related data.

Sequence Diagram

sequenceDiagram
    participant Client
    participant PurchaseController
    participant PurchaseHelpers

    Client->>PurchaseController: Send purchase request
    PurchaseController->>PurchaseController: Parse request body
    PurchaseController->>PurchaseController: Type assert to IPurchaseRequest
    PurchaseController->>PurchaseHelpers: Validate slot purchase name
    PurchaseHelpers->>PurchaseHelpers: Check against SlotPurchaseName mapping
    PurchaseHelpers-->>PurchaseController: Validation result
    PurchaseController-->>Client: Process purchase

The sequence diagram illustrates the new flow of processing a purchase request, highlighting the direct type assertion and the focused validation of slot purchase names through the new helper functions.

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## Walkthrough The pull request introduces changes to two files: `src/controllers/api/purchaseController.ts` and `src/helpers/purchaseHelpers.ts`. In the purchase controller, the method of handling the purchase request has been simplified. Instead of using a transformation function `toPurchaseRequest`, the code now directly uses a type assertion to convert the request body to `IPurchaseRequest`. In the purchase helpers file, a significant refactoring has occurred. The previous `toPurchaseRequest` function, which performed comprehensive validation and transformation of purchase requests, has been completely removed. Two new functions have been introduced: `isSlotPurchaseName` and `parseSlotPurchaseName`. These functions focus specifically on validating slot purchase names by checking their presence in a predefined mapping. The changes represent a shift in type handling and validation approach, moving from a comprehensive request transformation method to a more targeted validation of specific purchase name attributes. The modifications suggest a simplification of the type conversion process and a more focused approach to validating purchase-related data. ## Sequence Diagram ```mermaid sequenceDiagram participant Client participant PurchaseController participant PurchaseHelpers Client->>PurchaseController: Send purchase request PurchaseController->>PurchaseController: Parse request body PurchaseController->>PurchaseController: Type assert to IPurchaseRequest PurchaseController->>PurchaseHelpers: Validate slot purchase name PurchaseHelpers->>PurchaseHelpers: Check against SlotPurchaseName mapping PurchaseHelpers-->>PurchaseController: Validation result PurchaseController-->>Client: Process purchase ``` The sequence diagram illustrates the new flow of processing a purchase request, highlighting the direct type assertion and the focused validation of slot purchase names through the new helper functions.   > [!TIP] > CodeRabbit's [docstrings feature](https://docs.coderabbit.ai/finishing-touches/docstrings) is now available as part of our [Early Access Program](https://docs.coderabbit.ai/early-access)! Simply use the command `@coderabbitai generate docstrings` to have CodeRabbit automatically generate docstrings for your pull request. We would love to hear your feedback on [Discord](https://discord.com/channels/1134356397673414807/1317286905557287022).      --- Thank you for using CodeRabbit. We offer it for free to the OSS community and would appreciate your support in helping us grow. 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coderabbitai[bot] (Migrated from github.com) reviewed 2024-12-21 18:01:02 -08:00

coderabbitai[bot] (Migrated from github.com) left a comment

Actionable comments posted: 1

🧹 Nitpick comments (1)

src/helpers/purchaseHelpers.ts (1)
Line range hint 3-9: Validate potential edge cases in slot purchase name parsing.
While the logic here correctly checks for presence in the mapping, consider clarifying or handling cases where slotPurchaseName is blank or undefined. For example, handle the scenario where the function is called with an empty string or non-string argument, potentially providing a more descriptive error message.

Possible revision:
 export const parseSlotPurchaseName = (slotPurchaseName: string) => {
+    if (!slotPurchaseName) {
+        throw new Error("slotPurchaseName input is empty or undefined");
+    }
     if (!isSlotPurchaseName(slotPurchaseName)) {
         throw new Error(`invalid slot name ${slotPurchaseName}`);
     }
     return slotPurchaseName;
 };

📜 Review details

Configuration used: .coderabbit.yaml
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 37f6fe9323 and 90ca981f4a.

📒 Files selected for processing (2)

src/controllers/api/purchaseController.ts (1 hunks)
src/helpers/purchaseHelpers.ts (1 hunks)

🔇 Additional comments (2)

src/helpers/purchaseHelpers.ts (1)

2-2: Ensure consistency in type imports.
The imported type "SlotPurchaseName" is consistently used in the subsequent functions. This is correct and aligns well with the new approach focusing on slot name validation. No further changes required here.

src/controllers/api/purchaseController.ts (1)

3-3: Proper import alignment.
Bringing in the IPurchaseRequest type is consistent with the new type-assertion approach. Ensure that older imports referencing the removed toPurchaseRequest function have been completely removed to avoid confusion.

**Actionable comments posted: 1** <details> <summary>🧹 Nitpick comments (1)</summary><blockquote> <details> <summary>src/helpers/purchaseHelpers.ts (1)</summary><blockquote> Line range hint `3-9`: **Validate potential edge cases in slot purchase name parsing.** While the logic here correctly checks for presence in the mapping, consider clarifying or handling cases where slotPurchaseName is blank or undefined. For example, handle the scenario where the function is called with an empty string or non-string argument, potentially providing a more descriptive error message. Possible revision: ```diff export const parseSlotPurchaseName = (slotPurchaseName: string) => { + if (!slotPurchaseName) { + throw new Error("slotPurchaseName input is empty or undefined"); + } if (!isSlotPurchaseName(slotPurchaseName)) { throw new Error(`invalid slot name ${slotPurchaseName}`); } return slotPurchaseName; }; ``` </blockquote></details> </blockquote></details> <details> <summary>📜 Review details</summary> **Configuration used: .coderabbit.yaml** **Review profile: CHILL** **Plan: Pro** <details> <summary>📥 Commits</summary> Reviewing files that changed from the base of the PR and between 37f6fe9323c64e22bd50da83e60ef8ed0126916d and 90ca981f4a53b2ad04e5f5d9f5e81ee8c3bd3ddd. </details> <details> <summary>📒 Files selected for processing (2)</summary> * `src/controllers/api/purchaseController.ts` (1 hunks) * `src/helpers/purchaseHelpers.ts` (1 hunks) </details> <details> <summary>🔇 Additional comments (2)</summary> <details> <summary>src/helpers/purchaseHelpers.ts (1)</summary> `2-2`: **Ensure consistency in type imports.** The imported type "SlotPurchaseName" is consistently used in the subsequent functions. This is correct and aligns well with the new approach focusing on slot name validation. No further changes required here. </details> <details> <summary>src/controllers/api/purchaseController.ts (1)</summary> `3-3`: **Proper import alignment.** Bringing in the IPurchaseRequest type is consistent with the new type-assertion approach. Ensure that older imports referencing the removed `toPurchaseRequest` function have been completely removed to avoid confusion. </details> </details> </details>

src/controllers/api/purchaseController.ts

						
				@ -8,3 +8,3 @@

				    const purchaseRequest = toPurchaseRequest(JSON.parse(String(req.body)));

				    const purchaseRequest = JSON.parse(String(req.body)) as IPurchaseRequest;

				    const accountId = await getAccountIdForRequest(req);

				    const response = await handlePurchase(purchaseRequest, accountId);

coderabbitai[bot] (Migrated from github.com) commented

2024-12-21 18:01:02 -08:00

🛠️ Refactor suggestion

Revisit validation with direct type assertion.
Casting to IPurchaseRequest bypasses structured validation, which the older helper performed. While this simplifies code, it also risks letting malformed data through. Consider reintroducing minimal validation checks (e.g., presence of required fields) to mitigate potential runtime errors down the line.

_:hammer_and_wrench: Refactor suggestion_ **Revisit validation with direct type assertion.** Casting to IPurchaseRequest bypasses structured validation, which the older helper performed. While this simplifies code, it also risks letting malformed data through. Consider reintroducing minimal validation checks (e.g., presence of required fields) to mitigate potential runtime errors down the line.

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Reference: OpenWF/SpaceNinjaServer#594