Use BlockListCache where possible

Signal/src/ViewControllers/HomeView/ConversationSearchViewController.swift

@@ -10,7 +10,7 @@ protocol ConversationSearchViewDelegate: class {
 }
 
 @objc
-class ConversationSearchViewController: UITableViewController {
+class ConversationSearchViewController: UITableViewController, BlockListCacheDelegate {
 
     @objc
     public weak var delegate: ConversationSearchViewDelegate?
@@ -48,15 +48,16 @@ class ConversationSearchViewController: UITableViewController {
 
     private var hasThemeChanged = false
 
-    var blockingManager: OWSBlockingManager {
-        return OWSBlockingManager.shared()
-    }
+    var blockListCache: BlockListCache!
 
     // MARK: View Lifecycle
 
     override func viewDidLoad() {
         super.viewDidLoad()
 
+        blockListCache = BlockListCache()
+        blockListCache.startObservingAndSyncState(delegate: self)
+
         tableView.rowHeight = UITableViewAutomaticDimension
         tableView.estimatedRowHeight = 60
         tableView.separatorColor = Theme.hairlineColor
@@ -337,6 +338,12 @@ class ConversationSearchViewController: UITableViewController {
         }
     }
 
+    // MARK: BlockListCacheDelegate
+
+    func blockListCacheDidUpdate(_ blocklistCache: BlockListCache) {
+        refreshSearchResults()
+    }
+
     // MARK: Update Search Results
 
     var refreshTimer: Timer?
@@ -394,7 +401,7 @@ class ConversationSearchViewController: UITableViewController {
     // MARK: -
 
     private func isBlocked(thread: ThreadViewModel) -> Bool {
-        return self.blockingManager.isThreadBlocked(thread.threadRecord)
+        return self.blockListCache.isBlocked(thread: thread.threadRecord)
     }
 }
 

Signal/src/ViewControllers/HomeView/HomeViewController.m

@@ -158,10 +158,6 @@ NSString *const kArchivedConversationsReuseIdentifier = @"kArchivedConversations
     [ExperienceUpgradeFinder sharedManager];
 #pragma GCC diagnostic pop
 
-    [[NSNotificationCenter defaultCenter] addObserver:self
-                                             selector:@selector(blockListDidChange:)
-                                                 name:kNSNotificationName_BlockListDidChange
-                                               object:nil];
     [[NSNotificationCenter defaultCenter] addObserver:self
                                              selector:@selector(signalAccountsDidChange:)
                                                  name:OWSContactsManagerSignalAccountsDidChangeNotification
@@ -207,13 +203,6 @@ NSString *const kArchivedConversationsReuseIdentifier = @"kArchivedConversations
 
 #pragma mark - Notifications
 
-- (void)blockListDidChange:(id)notification
-{
-    OWSAssertIsOnMainThread();
-
-    [self reloadTableViewData];
-}
-
 - (void)signalAccountsDidChange:(id)notification
 {
     OWSAssertIsOnMainThread();

SignalMessaging/Views/ContactsViewHelper.m

@@ -19,7 +19,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
-@interface ContactsViewHelper ()
+@interface ContactsViewHelper () <OWSBlockListCacheDelegate>
 
 // This property is a cached value that is lazy-populated.
 @property (nonatomic, nullable) NSArray<Contact *> *nonSignalContacts;
@@ -27,8 +27,7 @@ NS_ASSUME_NONNULL_BEGIN
 @property (nonatomic) NSDictionary<NSString *, SignalAccount *> *signalAccountMap;
 @property (nonatomic) NSArray<SignalAccount *> *signalAccounts;
 
-@property (nonatomic) NSArray<NSString *> *blockedPhoneNumbers;
-@property (nonatomic) NSArray<NSData *> *blockedGroupIds;
+@property (nonatomic, readonly) OWSBlockListCache *blockListCache;
 
 @property (nonatomic) BOOL shouldNotifyDelegateOfUpdatedContacts;
 @property (nonatomic) BOOL hasUpdatedContactsAtLeastOnce;
@@ -52,8 +51,8 @@ NS_ASSUME_NONNULL_BEGIN
     _delegate = delegate;
 
     _blockingManager = [OWSBlockingManager sharedManager];
-    _blockedPhoneNumbers = [_blockingManager blockedPhoneNumbers];
-    _blockedGroupIds = [_blockingManager blockedGroupIds];
+    _blockListCache = [OWSBlockListCache new];
+    [_blockListCache startObservingAndSyncStateWithDelegate:self];
 
     _conversationSearcher = ConversationSearcher.shared;
 
@@ -76,10 +75,6 @@ NS_ASSUME_NONNULL_BEGIN
                                              selector:@selector(signalAccountsDidChange:)
                                                  name:OWSContactsManagerSignalAccountsDidChangeNotification
                                                object:nil];
-    [[NSNotificationCenter defaultCenter] addObserver:self
-                                             selector:@selector(blockListDidChange:)
-                                                 name:kNSNotificationName_BlockListDidChange
-                                               object:nil];
 }
 
 - (void)dealloc
@@ -94,16 +89,6 @@ NS_ASSUME_NONNULL_BEGIN
     [self updateContacts];
 }
 
-- (void)blockListDidChange:(NSNotification *)notification
-{
-    OWSAssertIsOnMainThread();
-
-    self.blockedPhoneNumbers = self.blockingManager.blockedPhoneNumbers;
-    self.blockedGroupIds = self.blockingManager.blockedGroupIds;
-
-    [self updateContacts];
-}
-
 #pragma mark - Contacts
 
 - (nullable SignalAccount *)fetchSignalAccountForRecipientId:(NSString *)recipientId
@@ -162,14 +147,14 @@ NS_ASSUME_NONNULL_BEGIN
 {
     OWSAssertIsOnMainThread();
 
-    return [_blockedPhoneNumbers containsObject:recipientId];
+    return [self.blockListCache isRecipientIdBlocked:recipientId];
 }
 
 - (BOOL)isGroupIdBlocked:(NSData *)groupId
 {
     OWSAssertIsOnMainThread();
 
-    return [self.blockedGroupIds containsObject:groupId];
+    return [self.blockListCache isGroupIdBlocked:groupId];
 }
 
 - (BOOL)isThreadBlocked:(TSThread *)thread
@@ -434,6 +419,12 @@ NS_ASSUME_NONNULL_BEGIN
     [fromViewController presentViewController:modal animated:YES completion:nil];
 }
 
+- (void)blockListCacheDidUpdate:(OWSBlockListCache *)blocklistCache
+{
+    OWSAssertIsOnMainThread();
+    [self updateContacts];
+}
+
 @end
 
 NS_ASSUME_NONNULL_END