Rewrite ManageFoldersViewModel to use Flow

import org.koin.dsl.module

val manageFoldersUiModule = module {

    viewModel { ManageFoldersViewModel(foldersLiveDataFactory = get()) }

    viewModel { ManageFoldersViewModel(folderRepository = get()) }

    viewModel { FolderSettingsViewModel(preferences = get(), folderRepository = get(), messagingController = get()) }

}

package com.fsck.k9.ui.managefolders

import androidx.lifecycle.LiveData

import androidx.lifecycle.ViewModel

import androidx.lifecycle.asLiveData

import com.fsck.k9.Account

import com.fsck.k9.ui.folders.FoldersLiveData

import com.fsck.k9.ui.folders.FoldersLiveDataFactory

import com.fsck.k9.mailstore.DisplayFolder

import com.fsck.k9.mailstore.FolderRepository

class ManageFoldersViewModel(private val foldersLiveDataFactory: FoldersLiveDataFactory) : ViewModel() {

    private var foldersLiveData: FoldersLiveData? = null

    fun getFolders(account: Account): FoldersLiveData {

        val liveData = foldersLiveData

        if (liveData != null && liveData.account.uuid == account.uuid) {

            return liveData

        }

        return foldersLiveDataFactory.create(account).also {

            foldersLiveData = it

        }

class ManageFoldersViewModel(private val folderRepository: FolderRepository) : ViewModel() {

    fun getFolders(account: Account): LiveData<List<DisplayFolder>> {

        return folderRepository.getDisplayFoldersFlow(account).asLiveData()

    }

}