Add getDatasetState helper for the dataset lifecycle

[nozomione]

Context

Epic: #358

Dependency: #361 A PR for this issue will be based off the above issue's PR branch. (Due to frequent edits to the same files, the above dependency was added to this issue to minimize merge conflicts.)

In /download and dataset routes, we render the UI based on the dataset lifecycle states which include unprocessed, processing, processed (unexpired or expired), and processing error.

Currently, we set these values by destructuring dataset and creating all the appropriate variables within the components for conditional UI rendering logic.

Problem or idea

This approach clutters each component's implementation. Thus, we should create a dedicated helper to handle the assignments of these dataset lifecycle states. This will improve the readability and maintainability of our codebase.

Solution or next step

• Add a new helper getDatasetState that does the following:
  • Takes dataset as its argument
  • Returns the following lifecycle variables (names may differ):
  • (Mutable)
    • unprocessed : isNotProcessed
  • (Immutable)
    • processing : isProcessing
    • processed
    • unexpired (available for download) : isReady
    • expired (available for regeneration download) : isRegenerative
    • processing error : isProcessingError
• Use this new helper and clean up locally defined dataset lifecycle state variables and destructuring of dataset from the components