From 9f4b7a156a40769a0383911ab38e9ed09f986507 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Mon, 27 Mar 2017 01:22:24 +0300
Subject: fix reply updates

---
 Juick/ViewControllers/MessagesViewController.m | 81 ++++++++++++++++++--------
 1 file changed, 56 insertions(+), 25 deletions(-)

(limited to 'Juick/ViewControllers/MessagesViewController.m')

diff --git a/Juick/ViewControllers/MessagesViewController.m b/Juick/ViewControllers/MessagesViewController.m
index e8857a7..3e6b7c5 100644
--- a/Juick/ViewControllers/MessagesViewController.m
+++ b/Juick/ViewControllers/MessagesViewController.m
@@ -26,36 +26,52 @@ static NSString *CellIdentifier = @"MessageCell";
 @property(nonatomic, assign) Boolean dataLoading;
 @property(nonatomic, strong) NSString *path;
 @property(nonatomic, strong) NSMutableDictionary *params;
+@property(nonatomic, strong) dispatch_queue_t concurrent_queue;
 
 @end
 
 @implementation MessagesViewController
 
+- (id)init {
+    if (self = [super init]) {
+        self.concurrent_queue = dispatch_queue_create("Queue", DISPATCH_QUEUE_SERIAL);
+    };
+    return self;
+}
+
 - (void)loadFromPath:(NSString *)messagesPath withParams:(NSDictionary *)params withTitle:(NSString *)title
 {
     [self setPath:messagesPath];
     [self setParams:[[NSMutableDictionary alloc] initWithDictionary:params]];
     self.title = title;
     __weak MessagesViewController * weakSelf = self;
-    [self.messages removeAllObjects];
-    [weakSelf refreshData];
+    dispatch_sync(self.concurrent_queue, ^{
+        [self.messages removeAllObjects];
+        [weakSelf refreshData];
+    });
 }
 
 - (void) refreshData {
-    if ([self.path isEqualToString:[Message threadUrl]]) {
-        [self.messages removeAllObjects];
-    }
-    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
-        self.dataLoading = YES;
-        [Message pullNextFromPath:self.path params:self.params callback:^(NSArray *next) {
-            [[NSOperationQueue mainQueue] addOperationWithBlock:^{
-                [self.messages addObjectsFromArray:next];
-                [self.tableView reloadData];
-                [self.refreshControl endRefreshing];
-                self.dataLoading = NO;
-            }];
-        }];
-    });
+    self.dataLoading = YES;
+    [Message pullNextFromPath:self.path params:self.params callback:^(NSArray *next) {
+        NSArray *newMsgs = next;
+        if ([self.path isEqualToString:[Message threadUrl]]) {
+            NSUInteger lastRid = [((Message *)[self.messages lastObject]).rid unsignedIntegerValue];
+            NSUInteger count = [next count] - 1;
+            NSUInteger oldCount = [self.messages count];
+            if (oldCount > 0) {
+                if (lastRid && lastRid < count) {
+                    newMsgs = [next subarrayWithRange:NSMakeRange(lastRid, count - lastRid)];
+                } else {
+                    return;
+                }
+            }
+        }
+        [self.messages addObjectsFromArray:newMsgs];
+        [self.tableView reloadData];
+        [self.refreshControl endRefreshing];
+        self.dataLoading = NO;
+    }];
 }
 
 - (UIStatusBarStyle)preferredStatusBarStyle
@@ -119,12 +135,21 @@ static NSString *CellIdentifier = @"MessageCell";
 }
 
 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
-    return _messages.count;
+    __block NSInteger count;
+    dispatch_sync(self.concurrent_queue, ^{
+        count = self.messages.count;
+    });
+    return count;
 }
 
 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
     MessageCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
-    Message *msg = [_messages objectAtIndex:indexPath.row];
+    __block Message *msg;
+    dispatch_sync(self.concurrent_queue, ^{
+        msg = [self.messages objectAtIndex:indexPath.row];
+    });
+    cell.layer.borderWidth = 6;
+    cell.layer.borderColor = [ColorScheme mainBackground].CGColor;
     [cell setMessage:msg];
     if ([msg.attach length] > 0) {
         [cell.attach yy_setImageWithURL:[NSURL URLWithString:msg.attach] placeholder:[UIImage imageNamed:@"AttachPlaceholder"] options:YYWebImageOptionProgressiveBlur | YYWebImageOptionSetImageWithFadeAnimation completion:^(UIImage * _Nullable image, NSURL * _Nonnull url, YYWebImageFromType from, YYWebImageStage stage, NSError * _Nullable error) {
@@ -146,7 +171,10 @@ static NSString *CellIdentifier = @"MessageCell";
 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
     if ([self.path isEqualToString:[Message threadUrl]])
         return;
-    Message *msg = [_messages objectAtIndex:indexPath.row];
+    __block Message *msg;
+    dispatch_sync(self.concurrent_queue, ^{
+        msg = [self.messages objectAtIndex:indexPath.row];
+    });
     MessagesViewController *threadViewController = [[MessagesViewController alloc] init];
     [threadViewController loadFromPath:[Message threadUrl] withParams:[NSDictionary dictionaryWithObjectsAndKeys:msg.mid, @"mid", nil] withTitle:@"Thread"];
     [self.navigationController pushViewController:threadViewController animated:NO];
@@ -156,13 +184,16 @@ static NSString *CellIdentifier = @"MessageCell";
     CGFloat actualPosition = scrollView_.contentOffset.y;
     CGFloat contentHeight = scrollView_.contentSize.height - scrollView_.contentSize.height / 2;
     if (actualPosition >= contentHeight && !self.dataLoading) {
-        NSNumber *lastMid = ((Message *)[self.messages lastObject]).mid;
-        if (![self.path isEqualToString:[Message threadUrl]]) {
-            [self.params setValue:lastMid forKey:@"before_mid"];
-        }
-        [self refreshData];
+        __block Message *lastMsg;
+        dispatch_sync(self.concurrent_queue, ^{
+            lastMsg = [self.messages lastObject];
+            NSNumber *lastMid = lastMsg.mid;
+            if (![self.path isEqualToString:[Message threadUrl]]) {
+                [self.params setValue:lastMid forKey:@"before_mid"];
+            }
+            [self refreshData];
+        });
     }
 }
 
-
 @end
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