modified fetchMostRecentQuantitySampleOfType query to return startDate and endDate of sample

RCTAppleHealthKit/RCTAppleHealthKit+Methods_Body.m

@@ -8,6 +8,7 @@
 
 #import "RCTAppleHealthKit+Methods_Body.h"
 #import "RCTAppleHealthKit+Queries.h"
+#import "RCTAppleHealthKit+Utils.h"
 
 @implementation RCTAppleHealthKit (Methods_Body)
 
@@ -17,7 +18,7 @@
     // Query to get the user's latest weight, if it exists.
     HKQuantityType *weightType = [HKQuantityType quantityTypeForIdentifier:HKQuantityTypeIdentifierBodyMass];
 
-    [self fetchMostRecentQuantitySampleOfType:weightType predicate:nil completion:^(HKQuantity *mostRecentQuantity, NSError *error) {
+    [self fetchMostRecentQuantitySampleOfType:weightType predicate:nil completion:^(HKQuantity *mostRecentQuantity, NSDate *startDate, NSDate *endDate, NSError *error) {
         if (!mostRecentQuantity) {
             NSLog(@"Either an error occured fetching the user's weight information or none has been stored yet. In your app, try to handle this gracefully.");
             callback(@[RCTMakeError(@"Either an error occured fetching the user's weight information or none has been stored yet. In your app, try to handle this gracefully.", nil, nil)]);
@@ -50,7 +51,6 @@
             NSLog(@"An error occured saving the weight sample %@. In your app, try to handle this gracefully. The error was: %@.", weightSample, error);
             callback(@[RCTMakeError(@"An error occured saving the weight sample", nil, nil)]);
             return;
-            // abort();
         }
         callback(@[[NSNull null], @(weight)]);
     }];
@@ -62,7 +62,7 @@
     // Query to get the user's latest BMI, if it exists.
     HKQuantityType *bmiType = [HKQuantityType quantityTypeForIdentifier:HKQuantityTypeIdentifierBodyMassIndex];
 
-    [self fetchMostRecentQuantitySampleOfType:bmiType predicate:nil completion:^(HKQuantity *mostRecentQuantity, NSError *error) {
+    [self fetchMostRecentQuantitySampleOfType:bmiType predicate:nil completion:^(HKQuantity *mostRecentQuantity, NSDate *startDate, NSDate *endDate, NSError *error) {
         if (!mostRecentQuantity) {
             NSLog(@"Either an error occured fetching the user's bmi information or none has been stored yet. In your app, try to handle this gracefully.");
             callback(@[RCTMakeError(@"Either an error occured fetching the user's bmi information or none has been stored yet. In your app, try to handle this gracefully.", nil, nil)]);
@@ -72,7 +72,13 @@
             HKUnit *countUnit = [HKUnit countUnit];
             double bmi = [mostRecentQuantity doubleValueForUnit:countUnit];
 
-            callback(@[[NSNull null], @(bmi)]);
+            NSDictionary *response = @{
+                    @"value" : @(bmi),
+                    @"startDate" : [RCTAppleHealthKit buildISO8601StringFromDate:startDate],
+                    @"endDate" : [RCTAppleHealthKit buildISO8601StringFromDate:endDate],
+            };
+
+            callback(@[[NSNull null], response]);
         }
     }];
 }

RCTAppleHealthKit/RCTAppleHealthKit+Queries.h

@@ -10,7 +10,7 @@
 
 @interface RCTAppleHealthKit (Queries)
 
-- (void)fetchMostRecentQuantitySampleOfType:(HKQuantityType *)quantityType predicate:(NSPredicate *)predicate completion:(void (^)(HKQuantity *mostRecentQuantity, NSError *error))completion;
+- (void)fetchMostRecentQuantitySampleOfType:(HKQuantityType *)quantityType predicate:(NSPredicate *)predicate completion:(void (^)(HKQuantity *mostRecentQuantity, NSDate *startDate, NSDate *endDate, NSError *error))completion;
 - (void)fetchSumOfSamplesTodayForType:(HKQuantityType *)quantityType unit:(HKUnit *)unit completion:(void (^)(double, NSError *))completionHandler;
 
 @end

RCTAppleHealthKit/RCTAppleHealthKit+Queries.m

@@ -12,7 +12,7 @@
 @implementation RCTAppleHealthKit (Queries)
 
 
-- (void)fetchMostRecentQuantitySampleOfType:(HKQuantityType *)quantityType predicate:(NSPredicate *)predicate completion:(void (^)(HKQuantity *, NSError *))completion { NSSortDescriptor *timeSortDescriptor = [[NSSortDescriptor alloc] initWithKey:HKSampleSortIdentifierEndDate ascending:NO];
+- (void)fetchMostRecentQuantitySampleOfType:(HKQuantityType *)quantityType predicate:(NSPredicate *)predicate completion:(void (^)(HKQuantity *, NSDate *, NSDate *, NSError *))completion { NSSortDescriptor *timeSortDescriptor = [[NSSortDescriptor alloc] initWithKey:HKSampleSortIdentifierEndDate ascending:NO];
 
     HKSampleQuery *query = [[HKSampleQuery alloc] initWithSampleType:quantityType
                                                   predicate:predicate
@@ -21,7 +21,7 @@
                                                   resultsHandler:^(HKSampleQuery *query, NSArray *results, NSError *error) {
                                                       if (!results) {
                                                           if (completion) {
-                                                              completion(nil, error);
+                                                              completion(nil, nil, nil, error);
                                                           }
                                                           return;
                                                       }
@@ -30,7 +30,9 @@
                                                           // If quantity isn't in the database, return nil in the completion block.
                                                           HKQuantitySample *quantitySample = results.firstObject;
                                                           HKQuantity *quantity = quantitySample.quantity;
-                                                          completion(quantity, error);
+                                                          NSDate *startDate = quantitySample.startDate;
+                                                          NSDate *endDate = quantitySample.endDate;
+                                                          completion(quantity, startDate, endDate, error);
                                                       }
                                                   }];