Add a Snackbar for each backend data update

[emibcn]

Each backend (currently, Maps and Charts) automatically tries to update the data -at least- once a day, when the official publication and covid-data Worflow finishes.

All of that is done without user intervention, neither giving any feedback.

Proposal

Add a Material/UI Snackbar to each backend update callback/subscription success execution.

• Currently, backends only allow reaction to a successful update.
• Probably -in the near future-, we'll have more callbacks available to better handle data updates statuses:
  • Schedule time for next update.
  • Start data update check.
  • Update found/not found.
  • Updating data.
  • Error updating data.
  • Success updating data (the only one currently exists).

Data updates callbacks:

• https://github.com/emibcn/covid/blob/master/app/src/Widget/List.jsx#L180
• https://github.com/emibcn/covid/blob/master/app/src/Widget/List.jsx#L189

[MeghalBisht]

Can i take this?

[emibcn]

@MeghalBisht Assigned!

[MeghalBisht]

@emibcn Since I am new here, please guide me, do I need to add snackbar for everytime user chooses a chart/map or only when it updates from the official publication.I am confused if the data updates only once per day, how is snackbar useful? Thanks

[emibcn]

Since I am new here, please guide me, do I need to add snackbar for everytime user chooses a chart/map or only when it updates from the official publication

Only on data update and until user closes. Probably would be a good idea to:

• Add an array of objects to Widget/List.jsx component's state, like: [ {title: "Map data has been updated", icon: faOk, color: "blue"} ].
• Add an onAck(index) handler for this array to handle the event when user ACK's it (remove it after remove transition ends?).
• Use them both on a sub-component.

I am confused if the data updates only once per day, how is snackbar useful? Thanks

It's only once a day, but it's nice to give feedback if a background and automatic action (DB update) that, in fact, changes some of the data the user may be visualizing (among them, the list of days, so all widgets need to update the view on DB update). Even more, some future data sources may need to update more than once a day.

Currently, the unique feedback given by the app on data update are some console.log messages (only in development environment).

[emibcn]

Maybe it's better to have a Notifications menu and show a snackbar after the first 5 minutes of each new notification?