1 files changed, 143 insertions, 0 deletions
diff --git a/VKPC/Statistics.m b/VKPC/Statistics.m
new file mode 100644
index 0000000..5b7e5b7
--- /dev/null
+++ b/VKPC/Statistics.m
@@ -0,0 +1,143 @@
+//
+//  Statistics.m
+//  VKPC
+//
+//  Created by Eugene on 11/12/14.
+//  Copyright (c) 2014 Eugene Z. All rights reserved.
+//
+
+#import "Statistics.h"
+
+@implementation Statistics {
+    NSMutableData *responseData;
+}
+
+static BOOL initialized = NO;
+static Statistics *instance;
+static NSTimer *timer;
+
+static const float kNormalTimeout = 3600 * 6;
+static const float kAfterFailureTimeout = 1200;
+
++ (void)initialize {
+    if (initialized) {
+        return;
+    }
+    
+    instance = [[Statistics alloc] init];
+    
+    long ts = GetTimestamp();
+    long reported = [[NSUserDefaults standardUserDefaults] integerForKey:VKPCPreferencesStatisticReportedTimestamp];
+    
+//    NSLog(@"[Statistics initialize] ts=%ld, reported=%ld", ts, reported);
+    
+    if (reported == 0 || ts - reported >= kNormalTimeout) {
+//        NSLog(@"[Statistics initalize] report now");
+        [self report];
+    } else {
+        [self initializeTimerWithTimeout:kNormalTimeout - (ts - reported)];
+    }
+    
+    initialized = YES;
+}
+
+//+ (void)timerCallback:(NSTimer *)timer {
+//    long ts = GetTimestamp();
+//    long reported = [[NSUserDefaults standardUserDefaults] integerForKey:VKPCPreferencesStatisticReportedTimestamp];
+//    
+//    NSLog(@"[Statistics timerCallback] ts=%ld, reported=%ld", ts, reported);
+//    
+//    if (ts - reported >= 3600 * 8) {
+//        [self report];
+//    } else {
+//        [self initializeTimerWithTimeout:kNormalTimeout];
+//    }
+//}
+
++ (void)initializeTimerWithTimeout:(float)timeout {
+    if (timer != nil) {
+        [timer invalidate];
+        timer = nil;
+    }
+    
+    timer = [NSTimer scheduledTimerWithTimeInterval:timeout
+                                     target:[Statistics class]
+                                   selector:@selector(report)
+                                   userInfo:nil
+                                    repeats:NO];
+}
+
++ (void)report {
+    NSMutableURLRequest *request = [[NSMutableURLRequest alloc]
+                                    initWithURL:[NSURL URLWithString:@"https://ch1p.com/vkpc/usage.php"]];
+    NSString *postData = [NSString stringWithFormat:@"app_v=%@&osx_v=%@&uuid=%@", getAppVersion(), getOSXVersion(), getUUID()];
+    
+    [request setHTTPMethod:@"POST"];
+    [request setHTTPBody:[postData dataUsingEncoding:NSUTF8StringEncoding]];
+ 
+    [instance mrProper];
+    [[NSURLConnection alloc] initWithRequest:request delegate:instance];
+}
+
++ (void)requestDone:(NSData *)data {
+    NSError *error;
+    NSArray *json = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&error];
+    
+    if (error || !json) {
+        NSLog(@"[Statistics requestDone] error while parsing json: %@", error);
+        [self initializeTimerWithTimeout:kAfterFailureTimeout];
+        return;
+    }
+    
+    NSString *result = json[0];
+    NSLog(@"[Statistics requestDone] result: %@", result);
+    if ([result isEqualToString:@"ok"]) {
+        [[NSUserDefaults standardUserDefaults] setObject:[NSNumber numberWithInteger:GetTimestamp()] forKey:VKPCPreferencesStatisticReportedTimestamp];
+        [self initializeTimerWithTimeout:kNormalTimeout];
+    } else {
+        [self initializeTimerWithTimeout:kAfterFailureTimeout];
+    }
+}
+
++ (void)requestFailed:(NSError *)error {
+    NSLog(@"[Statistics requestFailed] error: %@", [error description]);
+    [self initializeTimerWithTimeout:kAfterFailureTimeout];
+}
+
+- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
+    responseData = [[NSMutableData alloc] init];
+}
+
+- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
+    [responseData appendData:data];
+}
+
+- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
+    [Statistics requestFailed:error];
+}
+
+- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
+    [Statistics requestDone:responseData];
+}
+
+- (void)mrProper {
+    responseData = nil;
+}
+
+static NSString *getAppVersion() {
+    return [[[NSBundle mainBundle] infoDictionary] objectForKey:kCFBundleVersion];
+}
+
+static NSString *getOSXVersion() {
+    SInt32 major, minor, bugfix;
+    Gestalt(gestaltSystemVersionMajor, &major);
+    Gestalt(gestaltSystemVersionMinor, &minor);
+    Gestalt(gestaltSystemVersionBugFix, &bugfix);
+    return [NSString stringWithFormat:@"%d.%d.%d", major, minor, bugfix];
+}
+
+static NSString *getUUID() {
+    return [[NSUserDefaults standardUserDefaults] stringForKey:VKPCPreferencesUUID];
+}
+
+@end