feat: Handle Hashed Email for Rokt

Author: BrandonStalnaker

mParticle-Rokt/MPKitRokt.m

@@ -197,6 +197,9 @@ - (RoktFrameworkType)mapMPWrapperSdkToRoktFrameworkType:(MPWrapperSdk)wrapperSdk
     // Add all known user identities to the attributes being passed to the Rokt SDK
     [self addIdentityAttributes:finalAtt filteredUser:filteredUser];
 
+    // Handle hashed email use case
+    [self handleHashedEmail:finalAtt];
+    
     // The core SDK does not set sandbox on the user, but we must pass it to Rokt if provided
     NSString *sandboxKey = @"sandbox";
     if (attributes[sandboxKey] != nil) {
@@ -293,6 +296,27 @@ + (void)addIdentityAttributes:(NSMutableDictionary<NSString *, NSString *> * _Nu
     }
 }
 
++ (void)handleHashedEmail:(NSMutableDictionary<NSString *, NSString *> * _Nullable)attributes {
+    NSString *emailKey = [MPKitRokt stringForIdentityType:MPIdentityEmail];
+    NSString *otherKey = [MPKitRokt stringForIdentityType:MPIdentityOther];
+    NSString *hashedEmailValue = attributes[@"emailsha256"];
+    
+    // Remove email and other is hashed vlaue already set
+    if (hashedEmailValue != nil) {
+        [attributes removeObjectForKey:emailKey];
+        [attributes removeObjectForKey:otherKey];
+    }
+    
+    NSString *otherValue = attributes[otherKey];
+    
+    // Remove email and replace key on other if it's set
+    if (otherValue != nil) {
+        [attributes removeObjectForKey:emailKey];
+        attributes[@"emailsha256"] = otherValue;
+        [attributes removeObjectForKey:otherKey];
+    }
+}
+
 + (RoktConfig *)convertMPRoktConfig:(MPRoktConfig *)mpRoktConfig {
     if (mpRoktConfig != nil) {
         Builder *builder = [[Builder alloc] init];

mParticle_RoktTests/mParticle_RoktTests.m

@@ -23,6 +23,8 @@ - (MPKitExecStatus *)purchaseFinalized:(NSString *)placementId
 
 + (void)addIdentityAttributes:(NSMutableDictionary<NSString *, NSString *> * _Nullable)attributes filteredUser:(FilteredMParticleUser * _Nonnull)filteredUser;
 
++ (void)handleHashedEmail:(NSMutableDictionary<NSString *, NSString *> * _Nullable)attributes;
+
 + (RoktConfig *)convertMPRoktConfig:(MPRoktConfig *)mpRoktConfig;
 
 @end
@@ -493,4 +495,31 @@ - (void)testEvents_NilIdentifier {
     [mockRoktSDK stopMocking];
 }
 
+- (void)testHandleHashedEmailOtherOverride {
+    NSMutableDictionary<NSString *, NSString *> *passedAttributes = [[NSMutableDictionary alloc] init];
+    [passedAttributes setObject:@"foo@gmail.com" forKey:@"email"];
+    [passedAttributes setObject:@"test@gmail.com" forKey:@"other"];
+    
+    [MPKitRokt handleHashedEmail:passedAttributes];
+    
+    XCTAssertNil(passedAttributes[@"email"]);
+    XCTAssertNil(passedAttributes[@"other"]);
+    XCTAssertEqualObjects(passedAttributes[@"emailsha256"], @"test@gmail.com");
+    XCTAssertTrue(passedAttributes.allKeys.count == 1);
+}
+
+- (void)testHandleHashedEmailHashedOverride {
+    NSMutableDictionary<NSString *, NSString *> *passedAttributes = [[NSMutableDictionary alloc] init];
+    [passedAttributes setObject:@"foo@gmail.com" forKey:@"email"];
+    [passedAttributes setObject:@"test@gmail.com" forKey:@"other"];
+    [passedAttributes setObject:@"test2@gmail.com" forKey:@"emailsha256"];
+    
+    [MPKitRokt handleHashedEmail:passedAttributes];
+    
+    XCTAssertNil(passedAttributes[@"email"]);
+    XCTAssertNil(passedAttributes[@"other"]);
+    XCTAssertEqualObjects(passedAttributes[@"emailsha256"], @"test2@gmail.com");
+    XCTAssertTrue(passedAttributes.allKeys.count == 1);
+}
+
 @end