Fixed: On successful scan, item get stuck in pending state

[R-Sourabh]

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Short Description and Why It's Useful

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Contribution and Currently Important Rules Acceptance

• I have read and followed contribution rules

[gemini-code-assist]

Summary of Changes

Hello @R-Sourabh, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request resolves an issue where successfully scanned items would become stuck in a pending state within the inventory counting process. It introduces a robust queueing mechanism to manage the state and counts of scanned items, ensuring they are accurately processed and updated. This enhancement significantly improves the reliability and consistency of the scanning workflow.

Highlights

• Introduced Scanned Items Queue: A new scannedItemsQueue object has been added to temporarily store and manage the counts of items that have been recently scanned and are awaiting final processing.
• Synchronized Item Count Updates: Logic was implemented to add an item's count to the scannedItemsQueue when it is saved and to retrieve and remove it from the queue once its updates are fully processed, ensuring items do not remain in a pending state.
• Deep Copy for New Items: A deep copy mechanism was introduced for new items before they are passed to the findProductFromIdentifier function, preventing potential unintended modifications or side effects during item identification.

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[gemini-code-assist]

Code Review

This pull request introduces a fix for an issue where scanned items could get stuck in a pending state. The approach of using a scannedItemsQueue to temporarily hold item counts during asynchronous processing seems sound. My review includes a high-severity comment on a potential bug that could cause counts of zero to be missed, and a medium-severity comment to improve the clarity and style of a new helper function.

[gemini-code-assist]

This condition if(scannedItemsQueue[updatedItem.scannedId]) will evaluate to false if the queued count is 0. Since 0 is a valid quantity, this check could cause the count to be ignored, potentially leading to the very issue of items being stuck in a pending state that this PR aims to fix. You should check for the property's existence instead of its truthiness.

  if(updatedItem.scannedId in scannedItemsQueue) {

[gemini-code-assist]

This function can be simplified for better clarity and to address the inconsistent return value. It currently returns updatedItem in one branch but implicitly undefined in another. Since the return value is not used, it's best to have no return value for consistency and to signal that the function's purpose is its side effect.

  if (updatedItem?.scannedId) {
    delete scannedItemsQueue[updatedItem.scannedId];
  }