forked from objcio/issue-10-core-data-network-application
-
Notifications
You must be signed in to change notification settings - Fork 0
/
PodsWebservice.m
101 lines (80 loc) · 3.84 KB
/
PodsWebservice.m
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
//
// Created by chris on 02.03.14.
//
#import "PodsWebservice.h"
@interface PodsWebservice ()
@property (nonatomic, readwrite) NSURLSession *urlSession;
- (void)fetchAllPods:(void (^)(NSArray *pods))callback query:(NSString *) query page:(NSUInteger)page;
@end
static NSString * const kCocoaPodsAPIBaseURLString = @"http://search.cocoapods.org/api/pods";
NSUInteger pageSize = 10;
@implementation PodsWebservice
- (void)fetchAllPodsWithCallback:(void (^)(NSArray *pods))callback {
[self fetchAllPods:callback query:@"on:ios%20test" page:0 ];
}
- (void)fetchAllPods:(void (^)(NSArray *pods))callback query:(NSString *) query page:(NSUInteger)page {
NSString *urlString = [NSString stringWithFormat:
@"%@?query=%@&amount=%lu&start-at=%lu",
kCocoaPodsAPIBaseURLString,
query,
pageSize,
(page * pageSize) + page]; // e.g. (3 * 10) + 3 = 33, start on the 33rd pod
NSURL *url = [NSURL URLWithString:urlString];
[[self.urlSession dataTaskWithURL:url
completionHandler:
^(NSData *data, __unused NSURLResponse *response, NSError *error) {
if (error) {
NSLog(@"error: %@", error.localizedDescription);
callback(nil);
return;
}
NSError *jsonError;
id result = [NSJSONSerialization JSONObjectWithData:data
options:NSJSONReadingMutableContainers
error:&jsonError];
if(!result) {
NSLog(@"error: %@", jsonError.localizedDescription);
return;
}
if ([result isKindOfClass:[NSArray class]]) {
callback(result);
// If the result count is equal to the page size, then there may
// be more pods to fetch. If the count is less than the page size,
// then we have reached the end of the list. However, if the
// result count is larger than pageSize, then our query didn't
// work :(.
if ([result count] == pageSize) {
[self fetchAllPods:callback query:query page:page + 1];
}
}
}] resume];
}
#pragma mark - Getters
- (NSURLSession *)urlSession {
if(_urlSession) {
return _urlSession;
}
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLCache *urlCache = [[NSURLCache alloc] initWithMemoryCapacity:4 * 1024 * 1024
diskCapacity:20 * 1024 * 1024
diskPath:nil];
[NSURLCache setSharedURLCache:urlCache];
configuration.allowsCellularAccess = NO;
configuration.timeoutIntervalForRequest = 30.0;
configuration.timeoutIntervalForResource = 60.0;
// This limit is per-session. For more complex web services, this number
// ought to be increased.
configuration.HTTPMaximumConnectionsPerHost = 1;
// The default cache is [NSURLCache sharedCache] and for this app, the
// shared cache is sufficient. However, for more complex web services, a
// separate URL cache object may be necessary. A new cache object has been
// created for demonstration.
configuration.URLCache = urlCache;
// @see http://blog.cocoapods.org/Search-API-Version-1/
[configuration setHTTPAdditionalHeaders: @{@"Accept": @"application/vnd.cocoapods.org+flat.hash.json; version=1"}];
_urlSession = [NSURLSession sessionWithConfiguration:configuration
delegate:nil
delegateQueue:nil];
return _urlSession;
}
@end