Add minimum required server version

[rolandgeider]

Use case

At the moment, we have to be very careful with changes, as the app might be incompatible with a newer version of the server.

Proposal

Add a new endpoint in the server, perhaps required_version that returns a version (we can use get_version() to generate it). The mobile app would load this on startup and compare its current version with the one downloaded. If the app's version is less than the required one, it would inform the user that he needs to update

[sandimilohanic]

@rolandgeider Is there already an endpoint or url to endpoint for checking to require version? If not yet, where should the endpoint be made, in the existing project or?

[rolandgeider]

no, there is currently no endpoint. If you want to also add it to the backend, go ahead, but I can also do it. The endpoint would return something looking like this "2.1a2.dev0", "2.1.3a2.dev0", "2.1.3b1", "2.4", "2.4.5". There are dart packages that can parse this

[sandimilohanic]

@rolandgeider I would be grateful if you could add an endpoint. thx

[rolandgeider]

Will do. You can work with hard coded values till then

[rolandgeider]

I have added a new endpoint, /api/v2/min-app-version/. This is available on master, to change the value just edit wger/__init__.py

[sandimilohanic]

@rolandgeider thx. Can you assign me this issue?

[sandimilohanic]

I recommend adding a new parameter in constants for enabling/disable new version updates, it is ok this option?

User will download from the server or googleplay/appstore new version?

[rolandgeider]

Ah you mean a constant to disable this check? Good idea, then we can ignore this while developing.

Yes, the user should be presented with some message indicating that they should update the app, we don't do anything automatically

[sandimilohanic]

Yes, I mean constant for disabling this check. This is very important while developing in progress.

[sandimilohanic]

The api endpoint /api/v2/min-app-version/ returned me error 4040 not found.

I check by url https://wger.rge.uber.space/api/v2/min-app-version/

[rolandgeider]

oh sorry, forgot to tell you, you need to use this URL https://wger-master.rge.uber.space/api/v2/min-app-version/

(wger.rge.uber.space has a different branch checked out)

[sandimilohanic]

One business logic question, do you want to check the application version update when the user logged in or also when the user is not logged in?