From b59daac3c720be13cd1c68f55440cf08e1770f8d Mon Sep 17 00:00:00 2001
From: Greg Wilson <gregwilson@outlook.com>
Date: Sun, 26 Jun 2016 23:19:41 -0400
Subject: [PATCH] added remaining body measurement identifiers to
 TypesAndPermissions... created getLatestBmi RCT method

---
 .../RCTAppleHealthKit+Methods_Body.h          |  2 ++
 .../RCTAppleHealthKit+Methods_Body.m          | 24 +++++++++++++++++++
 .../RCTAppleHealthKit+TypesAndPermissions.m   |  9 +++++++
 RCTAppleHealthKit/RCTAppleHealthKit.m         |  6 +++++
 4 files changed, 41 insertions(+)

diff --git a/RCTAppleHealthKit/RCTAppleHealthKit+Methods_Body.h b/RCTAppleHealthKit/RCTAppleHealthKit+Methods_Body.h
index fcff8ef..22e5bd2 100644
--- a/RCTAppleHealthKit/RCTAppleHealthKit+Methods_Body.h
+++ b/RCTAppleHealthKit/RCTAppleHealthKit+Methods_Body.h
@@ -13,4 +13,6 @@
 - (void)body_getCurrentWeight:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback;
 - (void)body_saveWeight:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback;
 
+- (void)body_getLatestBodyMassIndex:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback;
+
 @end
diff --git a/RCTAppleHealthKit/RCTAppleHealthKit+Methods_Body.m b/RCTAppleHealthKit/RCTAppleHealthKit+Methods_Body.m
index 1ec97c1..186e0c4 100644
--- a/RCTAppleHealthKit/RCTAppleHealthKit+Methods_Body.m
+++ b/RCTAppleHealthKit/RCTAppleHealthKit+Methods_Body.m
@@ -57,4 +57,28 @@
     }];
 }
 
+
+
+- (void)body_getLatestBodyMassIndex:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback
+{
+    // 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) {
+        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)]);
+        }
+        else {
+            // Determine the bmi in the required unit.
+            HKUnit *countUnit = [HKUnit countUnit];
+            double bmi = [mostRecentQuantity doubleValueForUnit:countUnit];
+
+            callback(@[[NSNull null], @(bmi)]);
+        }
+    }];
+}
+
+
+
 @end
diff --git a/RCTAppleHealthKit/RCTAppleHealthKit+TypesAndPermissions.m b/RCTAppleHealthKit/RCTAppleHealthKit+TypesAndPermissions.m
index f529613..c0729f7 100644
--- a/RCTAppleHealthKit/RCTAppleHealthKit+TypesAndPermissions.m
+++ b/RCTAppleHealthKit/RCTAppleHealthKit+TypesAndPermissions.m
@@ -45,8 +45,13 @@
     NSDictionary *readPerms = @{
         @"DietaryEnergy" : [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierDietaryEnergyConsumed],
         @"ActiveEnergy" : [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierActiveEnergyBurned],
+
         @"Height" : [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierHeight],
         @"Weight" : [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierBodyMass],
+        @"BodyFatPercentage" : [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierBodyFatPercentage],
+        @"BodyMassIndex" : [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierBodyMassIndex],
+        @"LeanBodyMass" : [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierLeanBodyMass],
+
         @"Steps" : [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierStepCount],
         @"DateOfBirth" : [HKObjectType characteristicTypeForIdentifier:HKCharacteristicTypeIdentifierDateOfBirth],
         @"Sex" : [HKObjectType characteristicTypeForIdentifier:HKCharacteristicTypeIdentifierBiologicalSex],
@@ -58,8 +63,12 @@
     NSDictionary *writePerms = @{
         @"DietaryEnergy" : [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierDietaryEnergyConsumed],
         @"ActiveEnergy" : [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierActiveEnergyBurned],
+
         @"Height" : [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierHeight],
         @"Weight" : [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierBodyMass],
+        @"BodyFatPercentage" : [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierBodyFatPercentage],
+        @"BodyMassIndex" : [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierBodyMassIndex],
+        @"LeanBodyMass" : [HKObjectType quantityTypeForIdentifier:HKQuantityTypeIdentifierLeanBodyMass],
     };
     return writePerms;
 }
diff --git a/RCTAppleHealthKit/RCTAppleHealthKit.m b/RCTAppleHealthKit/RCTAppleHealthKit.m
index 5248fca..4d04797 100644
--- a/RCTAppleHealthKit/RCTAppleHealthKit.m
+++ b/RCTAppleHealthKit/RCTAppleHealthKit.m
@@ -39,6 +39,12 @@ RCT_EXPORT_METHOD(saveWeight:(NSDictionary *)input callback:(RCTResponseSenderBl
     [self body_saveWeight:input callback:callback];
 }
 
+RCT_EXPORT_METHOD(getLatestBmi:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback)
+{
+    [self body_getLatestBodyMassIndex:input callback:callback];
+}
+
+
 RCT_EXPORT_METHOD(getStepCountForToday:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback)
 {
     [self fitness_getStepCountForToday:input callback:callback];
-- 
2.26.2