added fetchCorrelationSamplesOfType method and blood pressure samples vitals method

RCTAppleHealthKit/RCTAppleHealthKit+Methods_Vitals.h

@@ -6,9 +6,7 @@
 
 - (void)vitals_getBodyTemperatureSamples:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback;
 
-- (void)vitals_getBloodPressureSystolicSamples:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback;
-
-- (void)vitals_getBloodPressureDiastolicSamples:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback;
+- (void)vitals_getBloodPressureSamples:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback;
 
 - (void)vitals_getRespiratoryRateSamples:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback;
 

RCTAppleHealthKit/RCTAppleHealthKit+Methods_Vitals.m

@@ -72,4 +72,60 @@
     }];
 }
 
+
+- (void)vitals_getBloodPressureSamples:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback
+{
+    HKCorrelationType *bloodPressureCorrelationType = [HKCorrelationType correlationTypeForIdentifier:HKCorrelationTypeIdentifierBloodPressure];
+    HKQuantityType *systolicType = [HKQuantityType quantityTypeForIdentifier:HKQuantityTypeIdentifierBloodPressureSystolic];
+    HKQuantityType *diastolicType = [HKQuantityType quantityTypeForIdentifier:HKQuantityTypeIdentifierBloodPressureDiastolic];
+
+
+    HKUnit *unit = [RCTAppleHealthKit hkUnitFromOptions:input key:@"unit" withDefault:[HKUnit millimeterOfMercuryUnit]];
+    NSUInteger limit = [RCTAppleHealthKit uintFromOptions:input key:@"limit" withDefault:HKObjectQueryNoLimit];
+    BOOL ascending = [RCTAppleHealthKit boolFromOptions:input key:@"ascending" withDefault:false];
+    NSDate *startDate = [RCTAppleHealthKit dateFromOptions:input key:@"startDate" withDefault:nil];
+    NSDate *endDate = [RCTAppleHealthKit dateFromOptions:input key:@"endDate" withDefault:[NSDate date]];
+    if(startDate == nil){
+        callback(@[RCTMakeError(@"startDate is required in options", nil, nil)]);
+        return;
+    }
+    NSPredicate * predicate = [RCTAppleHealthKit predicateForSamplesBetweenDates:startDate endDate:endDate];
+
+    [self fetchCorrelationSamplesOfType:bloodPressureCorrelationType
+                                   unit:unit
+                           predicate:predicate
+                           ascending:ascending
+                               limit:limit
+                          completion:^(NSArray *results, NSError *error) {
+        if(results){
+            NSMutableArray *data = [NSMutableArray arrayWithCapacity:1];
+
+            for (NSDictionary *sample in results) {
+                HKCorrelation *bloodPressureValues = [sample valueForKey:@"correlation"];
+
+                HKQuantitySample *bloodPressureSystolicValue = [bloodPressureValues objectsForType:systolicType].anyObject;
+                HKQuantitySample *bloodPressureDiastolicValue = [bloodPressureValues objectsForType:diastolicType].anyObject;
+
+                NSDictionary *elem = @{
+                                       @"bloodPressureSystolicValue" : @([bloodPressureSystolicValue.quantity doubleValueForUnit:unit]),
+                                       @"bloodPressureDiastolicValue" : @([bloodPressureDiastolicValue.quantity doubleValueForUnit:unit]),
+                                       @"startDate" : [sample valueForKey:@"startDate"],
+                                       @"endDate" : [sample valueForKey:@"endDate"],
+                                      };
+
+                [data addObject:elem];
+            }
+
+
+            callback(@[[NSNull null], data]);
+            return;
+        } else {
+            NSLog(@"error getting blood pressure samples: %@", error);
+            callback(@[RCTMakeError(@"error getting blood pressure samples", nil, nil)]);
+            return;
+        }
+    }];
+}
+
+
 @end

RCTAppleHealthKit/RCTAppleHealthKit+Queries.m

@@ -108,7 +108,60 @@
 }
 
 
+- (void)fetchCorrelationSamplesOfType:(HKQuantityType *)quantityType
+                                 unit:(HKUnit *)unit
+                            predicate:(NSPredicate *)predicate
+                            ascending:(BOOL)asc
+                                limit:(NSUInteger)lim
+                           completion:(void (^)(NSArray *, NSError *))completion {
+
+    NSSortDescriptor *timeSortDescriptor = [[NSSortDescriptor alloc] initWithKey:HKSampleSortIdentifierEndDate
+                                                                       ascending:asc];
+
+    // declare the block
+    void (^handlerBlock)(HKSampleQuery *query, NSArray *results, NSError *error);
+    // create and assign the block
+    handlerBlock = ^(HKSampleQuery *query, NSArray *results, NSError *error) {
+        if (!results) {
+            if (completion) {
+                completion(nil, error);
+            }
+            return;
+        }
+
+        if (completion) {
+            NSMutableArray *data = [NSMutableArray arrayWithCapacity:1];
+
+            dispatch_async(dispatch_get_main_queue(), ^{
+
+                for (HKCorrelation *sample in results) {
+
+                    NSString *startDateString = [RCTAppleHealthKit buildISO8601StringFromDate:sample.startDate];
+                    NSString *endDateString = [RCTAppleHealthKit buildISO8601StringFromDate:sample.endDate];
+
+                    NSDictionary *elem = @{
+                                           @"correlation" : sample,
+                                           @"startDate" : startDateString,
+                                           @"endDate" : endDateString,
+                                           };
+
+                    [data addObject:elem];
+                }
+
+                completion(data, error);
+            });
+        }
+    };
+
 
+    HKSampleQuery *query = [[HKSampleQuery alloc] initWithSampleType:quantityType
+                                                           predicate:predicate
+                                                               limit:lim
+                                                     sortDescriptors:@[timeSortDescriptor]
+                                                      resultsHandler:handlerBlock];
+
+    [self.healthStore executeQuery:query];
+}
 
 
 

RCTAppleHealthKit/RCTAppleHealthKit+Utils.m

@@ -237,6 +237,9 @@
     if([unitString isEqualToString:@"celsius"]){
         theUnit = [HKUnit degreeCelsiusUnit];
     }
+    if([unitString isEqualToString:@"mmhg"]){
+        theUnit = [HKUnit millimeterOfMercuryUnit];
+    }
 
     if(theUnit == nil){
         theUnit = defaultValue;

RCTAppleHealthKit/RCTAppleHealthKit.m

@@ -145,6 +145,10 @@ RCT_EXPORT_METHOD(getBodyTemperatureSamples:(NSDictionary *)input callback:(RCTR
     [self vitals_getBodyTemperatureSamples:input callback:callback];
 }
 
+RCT_EXPORT_METHOD(getBloodPressureSamples:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback)
+{
+    [self vitals_getBloodPressureSamples:input callback:callback];
+}
 
 
 RCT_EXPORT_METHOD(getInfo:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback)

constants.js

@@ -46,6 +46,7 @@ const UNITS = {
 	bpm: 'bpm',
 	fahrenheit: 'fahrenheit',
 	celsius: 'celsius',
+	mmhg: 'mmhg',
 };