Download the Sermon Metadata Database

As a user, I need a local copy of the sermon metadata database so that I can have information about the current sermon without an internet connection.

Acceptance Criteria:

• GIVEN a brand new installation of the app

  • WHEN launching the app and performing the preflight checklist
  • AND the metadata can be retrieved from the online data source
    • THEN Firebase Remote Config is consulted for the most recent version of the metadata
    • AND a brand new copy of the sermon metadata database matching the version on Firebase is downloaded to a Room database
    • AND the current metadata version number is stored in a Room database
    • AND the preflight checklist continues to the next step
  • WHEN launching the app and performing the preflight checklist
  • AND the metadata can be retrieved from the online data source
    • THEN stop the preflight operations
    • AND show a dialog with:
      • a title of "Sermon Data Unavailable"
      • a message of "Branham Player is not able to fetch the necessary data for each of the sermons. Double-check your internet connection and please try again."
      • a positive button of "Retry" which restarts the preflight checklist from the beginning
      • a negative button of "Close App" which closes the application

• GIVEN the local copy of the metadata is out of date, per Firebase Remote Config

  • WHEN launching the app and performing the preflight checklist
    • THEN Firebase Remote Config is consulted for the most recent version of the metadata
    • AND the local copy of the old metadata is completely deleted
    • AND a brand new copy of the sermon metadata database matching the version on Firebase is downloaded to a Room database
    • AND the updated metadata version number is stored in a Room database
    • AND the preflight checklist continues to the next step
  • WHEN launching the app and performing the preflight checklist
  • AND the metadata can be retrieved from the online data source
    • THEN stop the preflight operations
    • AND show a dialog with:
      • a title of "Sermon Data Unavailable"
      • a message of "Branham Player is not able to fetch the necessary data for each of the sermons. Double-check your internet connection and please try again."
      • a positive button of "Retry" which restarts the preflight checklist from the beginning
      • a negative button of "Close App" which closes the application

Developer Notes:

• When running the preflight checklist, insert this step into whatever order makes sense.
• The URL hosting the metadata is: https://raw.githubusercontent.com/branham-player/golden-dataset/<version number from Firebase>/condensed.json