[BUG] App crashes when last account is removed from device's settings

[jesmrec]

This one comes from #4410 (comment)

Steps:

1. Add one account to the device
2. Switch to device settings without closing the app
3. Accounts -> oC account -> Remove Account
4. Switch to oC account

Current:

app crashes, this is the stacktrace:

 FATAL EXCEPTION: DefaultDispatcher-worker-15
                 Process: com.owncloud.android.debug, PID: 32604
                 java.lang.NullPointerException: Parameter specified as non-null is null: method com.owncloud.android.data.spaces.datasources.implementation.OCLocalSpacesDataSource$Companion.toModel, parameter <this>
                 	at com.owncloud.android.data.spaces.datasources.implementation.OCLocalSpacesDataSource$Companion.toModel(Unknown Source:2)
                 	at com.owncloud.android.data.spaces.datasources.implementation.OCLocalSpacesDataSource.getSpaceWithSpecialsByIdForAccount(OCLocalSpacesDataSource.kt:106)
                 	at com.owncloud.android.data.spaces.repository.OCSpacesRepository.getSpaceWithSpecialsByIdForAccount(OCSpacesRepository.kt:67)
                 	at com.owncloud.android.domain.spaces.usecases.GetSpaceWithSpecialsByIdForAccountUseCase.run(GetSpaceWithSpecialsByIdForAccountUseCase.kt:33)
                 	at com.owncloud.android.domain.spaces.usecases.GetSpaceWithSpecialsByIdForAccountUseCase.run(GetSpaceWithSpecialsByIdForAccountUseCase.kt:27)
                 	at com.owncloud.android.domain.BaseUseCase.invoke(BaseUseCase.kt:30)
                 	at com.owncloud.android.presentation.files.filelist.MainFileListViewModel$updateSpace$1.invokeSuspend(MainFileListViewModel.kt:350)
                 	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
                 	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
                 	at kotlinx.coroutines.internal.LimitedDispatcher.run(LimitedDispatcher.kt:42)
                 	at kotlinx.coroutines.scheduling.TaskImpl.run(Tasks.kt:95)
                 	at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:570)
                 	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:750)
                 	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:677)
                 	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:664)
                 	Suppressed: kotlinx.coroutines.DiagnosticCoroutineContextException: [StandaloneCoroutine{Cancelling}@75ce667, Dispatchers.IO]
12:08:33.981  E  FATAL EXCEPTION: DefaultDispatcher-worker-18
                 Process: com.owncloud.android.debug, PID: 32604
                 java.lang.NullPointerException: Parameter specified as non-null is null: method com.owncloud.android.data.spaces.datasources.implementation.OCLocalSpacesDataSource$Companion.toModel, parameter <this>
                 	at com.owncloud.android.data.spaces.datasources.implementation.OCLocalSpacesDataSource$Companion.toModel(Unknown Source:2)
                 	at com.owncloud.android.data.spaces.datasources.implementation.OCLocalSpacesDataSource.getSpaceWithSpecialsByIdForAccount(OCLocalSpacesDataSource.kt:106)
                 	at com.owncloud.android.data.spaces.repository.OCSpacesRepository.getSpaceWithSpecialsByIdForAccount(OCSpacesRepository.kt:67)
                 	at com.owncloud.android.domain.spaces.usecases.GetSpaceWithSpecialsByIdForAccountUseCase.run(GetSpaceWithSpecialsByIdForAccountUseCase.kt:33)
                 	at com.owncloud.android.domain.spaces.usecases.GetSpaceWithSpecialsByIdForAccountUseCase.run(GetSpaceWithSpecialsByIdForAccountUseCase.kt:27)
                 	at com.owncloud.android.domain.BaseUseCase.invoke(BaseUseCase.kt:30)
                 	at com.owncloud.android.presentation.files.filelist.MainFileListViewModel$updateSpace$1.invokeSuspend(MainFileListViewModel.kt:350)
                 	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
                 	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
                 	at kotlinx.coroutines.internal.LimitedDispatcher.run(LimitedDispatcher.kt:42)
                 	at kotlinx.coroutines.scheduling.TaskImpl.run(Tasks.kt:95)
                 	at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:570)
                 	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:750)
                 	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:677)
                 	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:664)
                 	Suppressed: kotlinx.coroutines.DiagnosticCoroutineContextException: [StandaloneCoroutine{Cancelling}@b6bac14, Dispatchers.IO]

Expected:

login view displayed with no crash

Pixel 2, Android 11
997ea67d

[GeorgeLifinRell]

I think I can work on that. Assign this to me and will submit a PR asap.

[JuancaG05]

Hi @GeorgeLifinRell! Thanks for your collaboration! Go for it, no need to have it assigned 😃

[jesmrec]

@GeorgeLifinRell could you finally work on this? if you need any help from our side, just let us know. We are happy to help

[GeorgeLifinRell]

@jesmrec Thank you, I'm working on it, will update asap.

[GeorgeLifinRell]

https://demo.owncloud.org is not working. Is there any alternatives, so that it'll help me a lot.

[jesmrec]

@GeorgeLifinRell

https://demo.owncloud.com
katherine/gemini

[GeorgeLifinRell]

I need more info about how to do this, since I'm new to such a huge codebase.

[JuancaG05]

Hi @GeorgeLifinRell! Well, it's difficult to explain the whole codebase as you said 😉, but my recommendation is first trying to reproduce the problem and get those logs posted in the issue, and from that point, going to the classes indicated in the logs, watching around, trying to identify the problem... At that point, if you have any problem just tell us 😀