SpacePod 37 PodList Refactor

The changes depicted in 36 result in a failure to load on first launch. The following changes to PodListView fix the issue, and begin the work of decluttering our PodListView.

YouTube

Goals

1. Fix first launch bug introduced last time
2. Move CoreData related functions to Persistence

Fix Bug

PodListView

.task {
    if pods.isEmpty { await getOld() }
}

private func getOld() async {
    let to = pods.last?.date?.previous(1) ?? Date()

Clean Up

1. Cut and paste delete and save into Persistence.
2. prepend viewContext with container.

func delete(_ pod: Pod) {
    container.viewContext.delete(pod)
    save()
}

func save() {
    do {
        try container.viewContext.save()
    } catch {
        let nsError = error as NSError
        fatalError("Unresolved error \(nsError), \(nsError.userInfo)")
    }
}

3. save() to PersistenceController.shared.save()
4. delete() to PersistenceController.shared.delete(pod)