Add a mechanism to specify dynamic key-value pairs in the prefill email body of a bug report

Aardvark.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name     = 'Aardvark'
-  s.version  = '1.1.3'
+  s.version  = '1.2.0'
   s.license  = 'Apache License, Version 2.0'
   s.summary  = 'Aardvark is a library that makes it dead simple to create actionable bug reports.'
   s.homepage = 'https://github.com/square/Aardvark'

Bug Reporting/ARKEmailBugReporter.h

@@ -22,13 +22,24 @@
 #import <MessageUI/MessageUI.h>
 
 
+@class ARKEmailBugReporter;
 @class ARKLogStore;
 @protocol ARKLogFormatter;
 
 
 NS_ASSUME_NONNULL_BEGIN
 
 
+@protocol ARKEmailBugReporterEmailBodyAdditionsDelegate <NSObject>
+
+@required
+
+/// Called on the main thread when a bug is filed. The key/value pairs in the returned dictionary will be appended to the bug report below the prefilledEmailBody.
+- (nullable NSDictionary *)emailBodyAdditionsForEmailBugReporter:(ARKEmailBugReporter *)emailBugReporter;
+
+@end
+
+
 /// Composes a bug report that is sent via email.
 @interface ARKEmailBugReporter : NSObject <ARKBugReporter>
 
@@ -40,6 +51,9 @@ NS_ASSUME_NONNULL_BEGIN
 /// The email body that will be presented to the user when they compose a report.
 @property (nonatomic, copy) NSString *prefilledEmailBody;
 
+/// The email body delegate, responsible for providing key/value pairs to include in the bug report at the time the bug is filed.
+@property (nullable, nonatomic, weak) id <ARKEmailBugReporterEmailBodyAdditionsDelegate> emailBodyAdditionsDelegate;
+
 /// The formatter used to prepare the log for entry into an email. Defaults to a vanilla instance of ARKDefaultLogFormatter.
 @property (nonatomic) id <ARKLogFormatter> logFormatter;
 

Bug Reporting/ARKEmailBugReporter.m

@@ -63,7 +63,7 @@ - (instancetype)init;
                            @"2. \n"
                            @"3. \n"
                            @"\n"
-                           @"System version: %@\n", [[UIDevice currentDevice] systemVersion]];
+                           @"System version: %@", [[UIDevice currentDevice] systemVersion]];
 
     _logFormatter = [ARKDefaultLogFormatter new];
     _numberOfRecentErrorLogsToIncludeInEmailBodyWhenAttachmentsAreAvailable = 3;
@@ -182,6 +182,7 @@ - (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)
         NSString *bugTitle = [alertView textFieldAtIndex:0].text;
         NSArray *logStores = [self.logStores copy];
         NSMapTable *logStoresToLogMessagesMap = [NSMapTable new];
+        NSDictionary *emailBodyAdditions = [self.emailBodyAdditionsDelegate emailBodyAdditionsForEmailBugReporter:self];
 
         if ([MFMailComposeViewController canSendMail]) {
             self.mailComposeViewController = [MFMailComposeViewController new];
@@ -195,7 +196,8 @@ - (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)
 
                     // Only attach data once all log messages have been retrieved.
                     if (logStoresToLogMessagesMap.count == logStores.count) {
-                        NSMutableString *emailBody = [NSMutableString stringWithFormat:@"%@\n", self.prefilledEmailBody];
+                        NSMutableString *emailBody = [self _prefilledEmailBodyWithEmailBodyAdditions:emailBodyAdditions];
+
                         for (ARKLogStore *logStore in logStores) {
                             NSArray *logMessages = [logStoresToLogMessagesMap objectForKey:logStore];
 
@@ -245,11 +247,11 @@ - (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)
 
                     // Only append logs once all log messages have been retrieved.
                     if (logStoresToLogMessagesMap.count == logStores.count) {
-                        NSMutableString *emailBody = [NSMutableString new];
+                        NSMutableString *emailBody = [self _prefilledEmailBodyWithEmailBodyAdditions:emailBodyAdditions];
+
                         for (ARKLogStore *logStore in logStores) {
                             NSArray *logMessages = [logStoresToLogMessagesMap objectForKey:logStore];
-
-                            [emailBody appendFormat:@"%@\n%@\n", self.prefilledEmailBody, [self _recentErrorLogMessagesAsPlainText:logMessages count:self.numberOfRecentErrorLogsToIncludeInEmailBodyWhenAttachmentsAreUnavailable]];
+                            [emailBody appendFormat:@"%@\n", [self _recentErrorLogMessagesAsPlainText:logMessages count:self.numberOfRecentErrorLogsToIncludeInEmailBodyWhenAttachmentsAreUnavailable]];
                         }
 
                         NSURL *composeEmailURL = [self _emailURLWithRecipients:@[self.bugReportRecipientEmailAddress] CC:@"" subject:bugTitle body:emailBody];
@@ -368,6 +370,22 @@ - (void)_dismissEmailComposeWindow;
     }
 }
 
+- (NSMutableString *)_prefilledEmailBodyWithEmailBodyAdditions:(nullable NSDictionary *)emailBodyAdditions;
+{
+    NSMutableString *prefilledEmailBodyWithEmailBodyAdditions = [NSMutableString stringWithFormat:@"%@\n", self.prefilledEmailBody];
+
+    if (emailBodyAdditions.count > 0) {
+        for (NSString *emailBodyAdditionKey in emailBodyAdditions.allKeys) {
+            [prefilledEmailBodyWithEmailBodyAdditions appendFormat:@"%@: %@\n", emailBodyAdditionKey, emailBodyAdditions[emailBodyAdditionKey]];
+        }
+    }
+
+    // Add a newline to separate prefill email body and additions from what comes after.
+    [prefilledEmailBodyWithEmailBodyAdditions appendString:@"\n"];
+
+    return prefilledEmailBodyWithEmailBodyAdditions;
+}
+
 - (NSString *)_recentErrorLogMessagesAsPlainText:(NSArray *)logMessages count:(NSUInteger)errorLogsToInclude;
 {
     NSMutableString *recentErrorLogs = [NSMutableString new];

Logging/ARKLogDistributor.m

@@ -75,11 +75,7 @@ - (instancetype)init;
     _logDistributingQueue.name = [NSString stringWithFormat:@"%@ Log Distributing Queue", self];
     _logDistributingQueue.maxConcurrentOperationCount = 1;
 
-#ifdef __IPHONE_8_0
-    if ([_logDistributingQueue respondsToSelector:@selector(setQualityOfService:)] /* iOS 8 or later */) {
-        _logDistributingQueue.qualityOfService = NSQualityOfServiceBackground;
-    }
-#endif
+    [self _setDistributionQualityOfServiceBackground];
 
     _logObservers = [NSMutableArray new];
 
@@ -191,8 +187,10 @@ - (void)distributeAllPendingLogsWithCompletionHandler:(dispatch_block_t)completi
 {
     ARKCheckCondition(completionHandler != NULL, , @"Must provide a completion handler!");
 
+    [self _setDistributionQualityOfServiceUserInitiated];
     [self.logDistributingQueue addOperationWithBlock:^{
         [[NSOperationQueue mainQueue] addOperationWithBlock:completionHandler];
+        [self _setDistributionQualityOfServiceBackground];
     }];
 }
 
@@ -284,4 +282,29 @@ - (void)_logMessage_inLogDistributingQueue:(ARKLogMessage *)logMessage;
     }
 }
 
+- (void)_setDistributionQualityOfServiceUserInitiated;
+{
+#ifdef __IPHONE_8_0
+    [self _setDistributionQualityOfService:NSQualityOfServiceUserInitiated];
+#endif
+}
+
+- (void)_setDistributionQualityOfServiceBackground;
+{
+#ifdef __IPHONE_8_0
+    [self _setDistributionQualityOfService:NSQualityOfServiceBackground];
+#endif
+}
+
+#ifdef __IPHONE_8_0
+
+- (void)_setDistributionQualityOfService:(NSQualityOfService)qualityOfService;
+{
+    if ([self.logDistributingQueue respondsToSelector:@selector(setQualityOfService:)] /* iOS 8 or later */) {
+        self.logDistributingQueue.qualityOfService = qualityOfService;
+    }
+}
+
+#endif
+
 @end