From 909d2e53d0714dc8d977c8b70215c338cf8ce6fc Mon Sep 17 00:00:00 2001
From: Daniele Volpi <daniele.volpi@medx.net>
Date: Thu, 14 Jul 2016 12:17:43 +0200
Subject: [PATCH] added getBloodGlucoseSamples method and types mmol/L and
 mg/dL

---
 .../RCTAppleHealthKit+Methods_Results.m       | 32 +++++++++++++++++++
 RCTAppleHealthKit/RCTAppleHealthKit+Utils.m   |  6 ++++
 RCTAppleHealthKit/RCTAppleHealthKit.m         |  6 ++++
 constants.js                                  |  2 ++
 4 files changed, 46 insertions(+)

diff --git a/RCTAppleHealthKit/RCTAppleHealthKit+Methods_Results.m b/RCTAppleHealthKit/RCTAppleHealthKit+Methods_Results.m
index d2e2c6a..43a5e85 100644
--- a/RCTAppleHealthKit/RCTAppleHealthKit+Methods_Results.m
+++ b/RCTAppleHealthKit/RCTAppleHealthKit+Methods_Results.m
@@ -4,7 +4,39 @@
 
 @implementation RCTAppleHealthKit (Methods_Results)
 
+- (void)results_getBloodGlucoseSamples:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback
+{
+    HKQuantityType *bloodGlucoseType = [HKQuantityType quantityTypeForIdentifier:HKQuantityTypeIdentifierBloodGlucose];
 
+    HKUnit *mmoLPerL = [[HKUnit moleUnitWithMetricPrefix:HKMetricPrefixMilli molarMass:HKUnitMolarMassBloodGlucose] unitDividedByUnit:[HKUnit literUnit]]
+
+    HKUnit *unit = [RCTAppleHealthKit hkUnitFromOptions:input key:@"unit" withDefault:mmoLPerL];
+    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 fetchQuantitySamplesOfType:bloodGlucoseType
+                                unit:unit
+                           predicate:predicate
+                           ascending:ascending
+                               limit:limit
+                          completion:^(NSArray *results, NSError *error) {
+        if(results){
+            callback(@[[NSNull null], results]);
+            return;
+        } else {
+            NSLog(@"error getting blood glucose samples: %@", error);
+            callback(@[RCTMakeError(@"error getting blood glucose samples", nil, nil)]);
+            return;
+        }
+    }];
+}
 
 
 @end
diff --git a/RCTAppleHealthKit/RCTAppleHealthKit+Utils.m b/RCTAppleHealthKit/RCTAppleHealthKit+Utils.m
index cd7a5b6..2b51927 100644
--- a/RCTAppleHealthKit/RCTAppleHealthKit+Utils.m
+++ b/RCTAppleHealthKit/RCTAppleHealthKit+Utils.m
@@ -240,6 +240,12 @@
     if([unitString isEqualToString:@"mmhg"]){
         theUnit = [HKUnit millimeterOfMercuryUnit];
     }
+    if([unitString isEqualToString:@"mmolPerL"]){
+        theUnit = [[HKUnit moleUnitWithMetricPrefix:HKMetricPrefixMilli molarMass:HKUnitMolarMassBloodGlucose] unitDividedByUnit:[HKUnit literUnit]];
+    }
+    if([unitString isEqualToString:@"mgPerL"]){
+        theUnit = [HKUnit unitFromString:@"mg/dL"];
+    }
 
     if(theUnit == nil){
         theUnit = defaultValue;
diff --git a/RCTAppleHealthKit/RCTAppleHealthKit.m b/RCTAppleHealthKit/RCTAppleHealthKit.m
index 796c0a5..f016e75 100644
--- a/RCTAppleHealthKit/RCTAppleHealthKit.m
+++ b/RCTAppleHealthKit/RCTAppleHealthKit.m
@@ -15,6 +15,7 @@
 #import "RCTAppleHealthKit+Methods_Fitness.h"
 #import "RCTAppleHealthKit+Methods_Characteristic.h"
 #import "RCTAppleHealthKit+Methods_Vitals.h"
+#import "RCTAppleHealthKit+Methods_Results.h"
 
 @implementation RCTAppleHealthKit
 
@@ -155,6 +156,11 @@ RCT_EXPORT_METHOD(getRespiratoryRateSamples:(NSDictionary *)input callback:(RCTR
     [self vitals_getRespiratoryRateSamples:input callback:callback];
 }
 
+RCT_EXPORT_METHOD(getBloodGlucoseSamples:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback)
+{
+    [self results_getBloodGlucoseSamples:input callback:callback];
+}
+
 
 RCT_EXPORT_METHOD(getInfo:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback)
 {
diff --git a/constants.js b/constants.js
index b36f13f..81fafa7 100644
--- a/constants.js
+++ b/constants.js
@@ -47,6 +47,8 @@ const UNITS = {
 	fahrenheit: 'fahrenheit',
 	celsius: 'celsius',
 	mmhg: 'mmhg',
+	mmolPerL: 'mmolPerL',
+	mgPerL: 'mgPerL',
 };
 
 
-- 
2.26.2