add function to check share(write) permissions authorisation

RCTAppleHealthKit/RCTAppleHealthKit+TypesAndPermissions.h

@@ -10,6 +10,8 @@
 
 @interface RCTAppleHealthKit (TypesAndPermissions)
 
+- (NSDictionary *)readPermsDict;
+- (NSDictionary *)writePermsDict;
 - (NSSet *)getReadPermsFromOptions:(NSArray *)options;
 - (NSSet *)getWritePermsFromOptions:(NSArray *)options;
 

RCTAppleHealthKit/RCTAppleHealthKit+TypesAndPermissions.m

@@ -83,7 +83,6 @@
     return writePerms;
 }
 
-
 // Returns HealthKit read permissions from options array
 - (NSSet *)getReadPermsFromOptions:(NSArray *)options {
     NSDictionary *readPermDict = [self readPermsDict];

RCTAppleHealthKit/RCTAppleHealthKit.h

@@ -19,6 +19,7 @@
 
 - (void)isHealthKitAvailable:(RCTResponseSenderBlock)callback;
 - (void)initializeHealthKit:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback;
+- (void)checkPermission:(NSString *)input callback:(RCTResponseSenderBlock)callback;
 - (void)getModuleInfo:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback;
 
 @end

RCTAppleHealthKit/RCTAppleHealthKit.m

@@ -36,6 +36,11 @@ RCT_EXPORT_METHOD(initHealthKit:(NSDictionary *)input callback:(RCTResponseSende
     [self initializeHealthKit:input callback:callback];
 }
 
+RCT_EXPORT_METHOD(checkSharePermission:(NSString *)input callback:(RCTResponseSenderBlock)callback)
+{
+    [self checkPermission:input callback:callback];
+}
+
 RCT_EXPORT_METHOD(initStepCountObserver:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback)
 {
     [self fitness_initializeStepEventObserver:input callback:callback];
@@ -248,6 +253,23 @@ RCT_EXPORT_METHOD(saveMindfulSession:(NSDictionary *)input callback:(RCTResponse
     }
 }
 
+- (void)checkPermission:(NSString *)input callback:(RCTResponseSenderBlock)callback
+{
+    self.healthStore = [[HKHealthStore alloc] init];
+    if ([HKHealthStore isHealthDataAvailable]) {
+        
+        HKObjectType *val = [[self writePermsDict] objectForKey:input];
+        
+        if ([self.healthStore authorizationStatusForType:val] == HKAuthorizationStatusSharingAuthorized) {
+            callback(@[[NSNull null], @true]);
+        } else {
+            callback(@[[NSNull null], @false]);
+        }
+    } else {
+        callback(@[RCTMakeError(@"HealthKit data is not available", nil, nil)]);
+    }
+}
+
 - (void)getModuleInfo:(NSDictionary *)input callback:(RCTResponseSenderBlock)callback
 {
     NSDictionary *info = @{