Extension:UploadWizard/Error behavior

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Invalid extension:

  • Report on first step and reject this file (but accept other valid files)

Too large:

  • Report on first step and reject this file (but accept other valid files)

Duplicate file contents:

  • Report on first step (immediately after upload) and reject this file (but accept other valid files)

File was previously deleted:

  • Minimally acceptable behavior: Report on first step (immediately after upload) and reject this file (but accept other valid files)
  • Ideal: As above, but trigger an interactive warning that allows the user to override.

File with same name was previously deleted:

  • Discard and ignore this warning (this is pretty useless information in almost all cases)

File name checks:

  • File name matches title blacklist,
  • File name exists
  • File name exists once name is normalized (e.g. "JPEG" to "jpg")
  • File name is protected
  • File name includes invalid characters
    • Because the file is initially uploaded to the temporary stash using a unique identifier, all these checks only need to be performed at the third stage ("Describe"), at which point the user should be forced to choose valid titles for all files
    • If for whatever reason a bad name slips through the third step, there is a final catch-all in the fourth step allowing the user to correct file names.