Fix crash when showing profile for uncached account

Tusker/Screens/Profile/ProfileStatusesViewController.swift

@@ -25,7 +25,7 @@ class ProfileStatusesViewController: EnhancedTableViewController {
     private var older: RequestRange?
     private var newer: RequestRange?
     
-    private var loaded = false
+    var loaded = false
     
     init(accountID: String?, kind: Kind, mastodonController: MastodonController) {
         self.accountID = accountID
@@ -61,12 +61,14 @@ class ProfileStatusesViewController: EnhancedTableViewController {
         if !loaded,
            let accountID = accountID,
            let account = mastodonController.persistentContainer.account(for: accountID) {
-            loaded = true
             updateUI(account: account)
         }
     }
     
-    private func updateUI(account: AccountMO) {
+    func updateUI(account: AccountMO) {
+        guard !loaded else { return }
+        loaded = true
+        
         if kind == .statuses {
             getPinnedStatuses { (response) in
                 guard case let .success(statuses, _) = response else {

Tusker/Screens/Profile/ProfileViewController.swift

@@ -49,6 +49,10 @@ class ProfileViewController: UIPageViewController {
         fatalError("init(coder:) has not been implemented")
     }
     
+    deinit {
+        mastodonController.persistentContainer.account(for: accountID)?.decrementReferenceCount()
+    }
+
     override func viewDidLoad() {
         super.viewDidLoad()
         
@@ -56,7 +60,6 @@ class ProfileViewController: UIPageViewController {
 
         headerView = ProfileHeaderView.create()
         headerView.delegate = self
-        headerView.updateUI(for: accountID)
 
         selectPage(at: 0, animated: false)
         
@@ -70,6 +73,24 @@ class ProfileViewController: UIPageViewController {
             .filter { [weak self] in $0 == self?.accountID }
             .receive(on: DispatchQueue.main)
             .sink { [weak self] (_) in self?.updateAccountUI() }
+        
+        if mastodonController.persistentContainer.account(for: accountID) != nil {
+            headerView.updateUI(for: accountID)
+        } else {
+            let req = Client.getAccount(id: accountID)
+            mastodonController.run(req) { [weak self] (response) in
+                guard let self = self else { return }
+                guard case let .success(account, _) = response  else { fatalError() }
+                self.mastodonController.persistentContainer.addOrUpdate(account: account, incrementReferenceCount: true) { (account) in
+                    DispatchQueue.main.async {
+                        self.headerView.updateUI(for: self.accountID)
+                        self.pageControllers.forEach {
+                            $0.updateUI(account: account)
+                        }
+                    }
+                }
+            }
+        }
     }
     
     private func updateAccountUI() {