From d856b364dea82f7b89e2040075ee32d988707edb Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Thu, 7 Dec 2017 00:18:52 +0300
Subject: refactor

---
 Juick/APIClient.m | 28 ++++++++++++++++++----------
 1 file changed, 18 insertions(+), 10 deletions(-)

(limited to 'Juick/APIClient.m')

diff --git a/Juick/APIClient.m b/Juick/APIClient.m
index bcc4eec..abefa40 100644
--- a/Juick/APIClient.m
+++ b/Juick/APIClient.m
@@ -9,6 +9,10 @@
 #import "PDKeychainBindings.h"
 #import "Message.h"
 
+@interface APIClient()
+@property(nonatomic, strong) NSOperationQueue *backgroundQueue;
+@end
+
 @implementation APIClient
 
 +(APIClient *) sharedClient {
@@ -24,38 +28,38 @@
     if (self = [super init]) {
         self.manager = [[AFHTTPSessionManager alloc] initWithBaseURL:[NSURL URLWithString:@"https://api.juick.com"]];
         self.manager.requestSerializer = [AFJSONRequestSerializer new];
+        self.backgroundQueue = [NSOperationQueue new];
     }
     return self;
 }
 
 -(void) pullNextFromPath:(NSString *)path  params:(NSDictionary *) params callback:(void(^)(NSArray *, NSError *))callback {
     AFHTTPSessionManager *manager = [APIClient sharedClient].manager;
-    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
+    [self.backgroundQueue addOperationWithBlock:^{
         [manager GET:path parameters:params progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
             NSMutableArray *messages = [NSMutableArray new];
             [((NSArray *)responseObject) enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
                 [messages addObject:[Message yy_modelWithJSON:obj]];
             }];
-            dispatch_async(dispatch_get_main_queue(), ^{
+            [[NSOperationQueue mainQueue] addOperationWithBlock:^{
                 callback(messages, nil);
-            });
+            }];
             
         } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
             NSLog(@"REST Error: %@", error);
             NSInteger statusCode = ((NSHTTPURLResponse *)task.response).statusCode;
             if (statusCode == 401) {
-                dispatch_async(dispatch_get_main_queue(), ^{
+                [[NSOperationQueue mainQueue] addOperationWithBlock:^{
                     callback(nil, [[NSError alloc] initWithDomain:@"JuickErrorDomain" code:401 userInfo:nil]);
-                });
+                }];
             }
         }];
-    });
+    }];
 }
 
 -(void) postReplyToThread:(NSNumber *)mid inReplyTo:(NSNumber *)rid text:(NSString *)text result:(void(^)(Message *, NSError *))callback {
     AFHTTPSessionManager *manager = [APIClient sharedClient].manager;
-    NSOperationQueue *operationQueue = [NSOperationQueue new];
-    [operationQueue addOperationWithBlock:^{
+    [self.backgroundQueue addOperationWithBlock:^{
         [manager POST:@"/comment" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {
             [formData appendPartWithFormData:[[mid stringValue] dataUsingEncoding:NSUTF8StringEncoding] name:@"mid"];
             [formData appendPartWithFormData:[[rid stringValue] dataUsingEncoding:NSUTF8StringEncoding] name:@"rid"];
@@ -63,10 +67,14 @@
         } progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
             NSLog(@"Success!");
             Message *reply = [Message yy_modelWithJSON:responseObject];
-            callback(reply, nil);
+            [[NSOperationQueue mainQueue] addOperationWithBlock:^{
+                callback(reply, nil);
+            }];
         } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
             NSLog(@"Error: %@", [error localizedDescription]);
-            callback(nil, error);
+            [[NSOperationQueue mainQueue] addOperationWithBlock:^{
+                callback(nil, error);
+            }];
         }];
     }];
 }
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