Allow setting the domainURIPrefix for custom domain names/paths when creating dynamic links

Example/DynamicLinks/FDLBuilderTestAppObjC/ViewController.m

@@ -155,9 +155,9 @@ - (void)_initDefaultValues {
       },
       // The default value of domain appcode belongs to project: app-invites-qa
       @{
-        @"id" : @"domain",
-        @"label" : @"App domain (required)",
-        @"defaultValue" : @"testfdl.page.link",
+        @"id" : @"domainURIPrefix",
+        @"label" : @"App domainURIPrefix (required)",
+        @"defaultValue" : @"https://testfdl.page.link",
       },
       // analytics params
       @{
@@ -289,7 +289,8 @@ - (void)_initDefaultValues {
 - (void)_buildFDLLink {
   NSURL *link = [NSURL URLWithString:_paramValues[@"linkString"]];
   FIRDynamicLinkComponents *components =
-      [FIRDynamicLinkComponents componentsWithLink:link domain:_paramValues[@"domain"]];
+      [FIRDynamicLinkComponents componentsWithLink:link
+                                   domainURIPrefix:_paramValues[@"https://domain"]];
 
   FIRDynamicLinkGoogleAnalyticsParameters *analyticsParams =
       [FIRDynamicLinkGoogleAnalyticsParameters

Example/DynamicLinks/Tests/FDLURLComponentsTests.m

@@ -21,7 +21,8 @@
 
 #import <OCMock/OCMock.h>
 
-static NSString *const kFDLURLDomain = @"xyz.page.link";
+static NSString *const kFDLURLDomain = @"https://xyz.page.link";
+static NSString *const kFDLURLCustomDomain = @"https://foo.com/path";
 
 @interface FDLURLComponentsTests : XCTestCase
 @end
@@ -461,14 +462,14 @@ - (void)testLinkOptionsParamsPropertiesSetProperly {
 
 - (void)testFDLComponentsFactoryReturnsInstanceOfCorrectClass {
   NSURL *link = [NSURL URLWithString:@"https://google.com"];
-  id returnValue = [FIRDynamicLinkComponents componentsWithLink:link domain:kFDLURLDomain];
+  id returnValue = [FIRDynamicLinkComponents componentsWithLink:link domainURIPrefix:kFDLURLDomain];
   XCTAssertTrue([returnValue isKindOfClass:[FIRDynamicLinkComponents class]]);
 }
 
 - (void)testFDLComponentsFactoryReturnsInstanceWithAllNilProperties {
   NSURL *link = [NSURL URLWithString:@"https://google.com"];
   FIRDynamicLinkComponents *components =
-      [FIRDynamicLinkComponents componentsWithLink:link domain:kFDLURLDomain];
+      [FIRDynamicLinkComponents componentsWithLink:link domainURIPrefix:kFDLURLDomain];
 
   XCTAssertNil(components.analyticsParameters);
   XCTAssertNil(components.socialMetaTagParameters);
@@ -484,11 +485,27 @@ - (void)testFDLComponentsCreatesSimplestLinkCorrectly {
   NSURL *link = [NSURL URLWithString:linkString];
 
   NSString *expectedURLString =
-      [NSString stringWithFormat:@"https://%@/?link=%@", kFDLURLDomain, endcodedLinkString];
+      [NSString stringWithFormat:@"%@/?link=%@", kFDLURLDomain, endcodedLinkString];
   NSURL *expectedURL = [NSURL URLWithString:expectedURLString];
 
   FIRDynamicLinkComponents *components =
-      [FIRDynamicLinkComponents componentsWithLink:link domain:kFDLURLDomain];
+      [FIRDynamicLinkComponents componentsWithLink:link domainURIPrefix:kFDLURLDomain];
+  NSURL *actualURL = components.url;
+
+  XCTAssertEqualObjects(actualURL, expectedURL);
+}
+
+- (void)testFDLComponentsCustomDomainWithPath {
+  NSString *linkString = @"https://google.com";
+  NSString *endcodedLinkString = @"https%3A%2F%2Fgoogle%2Ecom";
+  NSURL *link = [NSURL URLWithString:linkString];
+
+  NSString *expectedURLString =
+      [NSString stringWithFormat:@"%@/?link=%@", kFDLURLCustomDomain, endcodedLinkString];
+  NSURL *expectedURL = [NSURL URLWithString:expectedURLString];
+
+  FIRDynamicLinkComponents *components =
+      [FIRDynamicLinkComponents componentsWithLink:link domainURIPrefix:kFDLURLCustomDomain];
   NSURL *actualURL = components.url;
 
   XCTAssertEqualObjects(actualURL, expectedURL);
@@ -499,7 +516,8 @@ - (void)testFDLComponentsFailsOnMalformedDomain {
   NSURL *link = [NSURL URLWithString:linkString];
 
   FIRDynamicLinkComponents *components =
-      [FIRDynamicLinkComponents componentsWithLink:link domain:@"this is invalid domain"];
+      [FIRDynamicLinkComponents componentsWithLink:link
+                                   domainURIPrefix:@"this is invalid domain URI Prefix"];
 
   XCTAssertNil(components.url);
 }
@@ -553,7 +571,7 @@ - (void)testFDLComponentsCreatesFullLinkCorrectly {
 
   NSURL *link = [NSURL URLWithString:@"https://google.com"];
   FIRDynamicLinkComponents *fdlComponents =
-      [FIRDynamicLinkComponents componentsWithLink:link domain:kFDLURLDomain];
+      [FIRDynamicLinkComponents componentsWithLink:link domainURIPrefix:kFDLURLDomain];
   fdlComponents.analyticsParameters = analyticsParams;
   fdlComponents.iOSParameters = iosParams;
   fdlComponents.iTunesConnectParameters = itcParams;
@@ -642,7 +660,7 @@ - (void)testShortenURL {
   XCTestExpectation *expectation = [self expectationWithDescription:@"completion called"];
   NSURL *link = [NSURL URLWithString:@"https://google.com/abc"];
   FIRDynamicLinkComponents *components =
-      [FIRDynamicLinkComponents componentsWithLink:link domain:kFDLURLDomain];
+      [FIRDynamicLinkComponents componentsWithLink:link domainURIPrefix:kFDLURLDomain];
   [components
       shortenWithCompletion:^(NSURL *_Nullable shortURL, NSArray<NSString *> *_Nullable warnings,
                               NSError *_Nullable error) {
@@ -679,7 +697,7 @@ - (void)testShortenURLReturnsErrorWhenAPIKeyMissing {
       [self expectationWithDescription:@"completion called with error"];
   NSURL *link = [NSURL URLWithString:@"https://google.com/abc"];
   FIRDynamicLinkComponents *components =
-      [FIRDynamicLinkComponents componentsWithLink:link domain:kFDLURLDomain];
+      [FIRDynamicLinkComponents componentsWithLink:link domainURIPrefix:kFDLURLDomain];
   [components
       shortenWithCompletion:^(NSURL *_Nullable shortURL, NSArray<NSString *> *_Nullable warnings,
                               NSError *_Nullable error) {
@@ -714,20 +732,11 @@ - (void)testShortenURLReturnsErrorWhenDomainIsMalformed {
              return YES;
            }]];
 
-  XCTestExpectation *expectation =
-      [self expectationWithDescription:@"completion called with error"];
   NSURL *link = [NSURL URLWithString:@"https://google.com/abc"];
   FIRDynamicLinkComponents *components =
-      [FIRDynamicLinkComponents componentsWithLink:link domain:@"this is invalid domain"];
-  [components
-      shortenWithCompletion:^(NSURL *_Nullable shortURL, NSArray<NSString *> *_Nullable warnings,
-                              NSError *_Nullable error) {
-        XCTAssertNil(shortURL);
-        if (error) {
-          [expectation fulfill];
-        }
-      }];
-  [self waitForExpectationsWithTimeout:0.1 handler:nil];
+      [FIRDynamicLinkComponents componentsWithLink:link
+                                   domainURIPrefix:@"this is invalid domain URI Prefix"];
+  XCTAssertNil(components);
 
   [keyProviderClassMock verify];
   [keyProviderClassMock stopMocking];

Example/DynamicLinks/Tests/FIRDynamicLinkNetworkingTests.m

@@ -16,7 +16,7 @@
 
 #import <XCTest/XCTest.h>
 
-#import "OCMock.h"
+#import <OCMock/OCMock.h>
 
 #import <GoogleUtilities/GULSwizzler.h>
 #import "DynamicLinks/FIRDynamicLinkNetworking+Private.h"

Firebase/DynamicLinks/FDLURLComponents/FDLURLComponents.m

@@ -20,6 +20,7 @@
 #import "DynamicLinks/FDLURLComponents/FIRDynamicLinkComponentsKeyProvider.h"
 #import "DynamicLinks/Public/FDLURLComponents.h"
 
+#import "DynamicLinks/Logging/FDLLogging.h"
 #import "DynamicLinks/Utilities/FDLUtilities.h"
 
 /// The exact behavior of dict[key] = value is unclear when value is nil. This function safely adds
@@ -448,15 +449,50 @@ - (instancetype)init {
 
 @implementation FIRDynamicLinkComponents
 
+#pragma mark Deprecated Initializers.
 + (instancetype)componentsWithLink:(NSURL *)link domain:(NSString *)domain {
-  return [[self alloc] initWithLink:link domain:domain];
+  NSString *domainURIPrefix = [NSString stringWithFormat:@"https://%@", domain];
+  return [FIRDynamicLinkComponents componentsWithLink:link domainURIPrefix:domainURIPrefix];
 }
 
 - (instancetype)initWithLink:(NSURL *)link domain:(NSString *)domain {
+  NSString *domainURIPrefix = [NSString stringWithFormat:@"https://%@", domain];
+  return [self initWithLink:link domainURIPrefix:domainURIPrefix];
+}
+
+#pragma mark Initializers.
++ (instancetype)componentsWithLink:(NSURL *)link domainURIPrefix:(NSString *)domainURIPrefix {
+  NSURL *domainURIPrefixURL = [NSURL URLWithString:domainURIPrefix];
+  if (!domainURIPrefixURL) {
+    FDLLog(FDLLogLevelError, FDLLogIdentifierSetupInvalidDomainURIPrefix,
+           @"Invalid domainURIPrefix. Please input a valid URL.");
+    return nil;
+  }
+  if (![[domainURIPrefixURL.scheme lowercaseString] hasPrefix:@"https"]) {
+    FDLLog(FDLLogLevelError, FDLLogIdentifierSetupInvalidDomainURIPrefixScheme,
+           @"Invalid domainURIPrefix scheme. Scheme needs to be https");
+    return nil;
+  }
+  return [[self alloc] initWithLink:link domainURIPrefix:domainURIPrefix];
+}
+
+- (instancetype)initWithLink:(NSURL *)link domainURIPrefix:(NSString *)domainURIPrefix {
   self = [super init];
   if (self) {
     _link = link;
-    _domain = [domain copy];
+    /// Must be a URL that conforms to RFC 2396.
+    NSURL *domainURIPrefixURL = [NSURL URLWithString:domainURIPrefix];
+    if (!domainURIPrefixURL) {
+      FDLLog(FDLLogLevelError, FDLLogIdentifierSetupInvalidDomainURIPrefix,
+             @"Invalid domainURIPrefix. Please input a valid URL.");
+      return nil;
+    }
+    if (![[domainURIPrefixURL.scheme lowercaseString] hasPrefix:@"https"]) {
+      FDLLog(FDLLogLevelError, FDLLogIdentifierSetupInvalidDomainURIPrefixScheme,
+             @"Invalid domainURIPrefix scheme. Scheme needs to be https");
+      return nil;
+    }
+    _domain = [domainURIPrefix copy];
   }
   return self;
 }
@@ -593,7 +629,7 @@ - (NSURL *)url {
   addEntriesFromDictionaryRepresentingConformerToDictionary(_otherPlatformParameters);
 
   NSString *queryString = FIRDLURLQueryStringFromDictionary(queryDictionary);
-  NSString *urlString = [NSString stringWithFormat:@"https://%@/%@", _domain, queryString];
+  NSString *urlString = [NSString stringWithFormat:@"%@/%@", _domain, queryString];
   return [NSURL URLWithString:urlString];
 }
 

Firebase/DynamicLinks/Logging/FDLLogging.h

@@ -33,6 +33,8 @@ typedef NS_ENUM(NSInteger, FDLLogIdentifier) {
   FDLLogIdentifierSetupNilAPIKey = 0,
   FDLLogIdentifierSetupNilClientID = 1,
   FDLLogIdentifierSetupNonDefaultApp = 2,
+  FDLLogIdentifierSetupInvalidDomainURIPrefixScheme = 3,
+  FDLLogIdentifierSetupInvalidDomainURIPrefix = 4,
 };
 
 /** The appropriate formatter for using NSInteger in FIRLogger. */

Firebase/DynamicLinks/Public/FDLURLComponents.h

@@ -516,7 +516,9 @@ FIR_SWIFT_NAME(DynamicLinkComponents)
  */
 + (instancetype)componentsWithLink:(NSURL *)link
                             domain:(NSString *)domain
-    NS_SWIFT_UNAVAILABLE("Use init(link:domain:)");
+    NS_SWIFT_UNAVAILABLE("Use init(link:domain:)")DEPRECATED_MSG_ATTRIBUTE(
+        "This method is deprecated. Please use the new method with support for "
+        "domainUriPrefix- componentsWithLink:domainURIPrefix.");
 
 /**
  * @method initWithLink:domain:
@@ -527,7 +529,39 @@ FIR_SWIFT_NAME(DynamicLinkComponents)
  * @param domain Domain of your App. This value must be equal to your assigned domain from Firebase
  *     Console.
  */
-- (instancetype)initWithLink:(NSURL *)link domain:(NSString *)domain;
+- (instancetype)initWithLink:(NSURL *)link
+                      domain:(NSString *)domain
+    DEPRECATED_MSG_ATTRIBUTE(
+        "This method is deprecated. Please use the new method with support for "
+        "domainUriPrefix- initWithLink:domainURIPrefix.");
+
+/**
+ * @method componentsWithLink:domain:
+ * @abstract Generates a Dynamic Link URL components object with the minimum necessary parameters
+ *     set to generate a fully-functional Dynamic Link.
+ * @param link Deep link to be stored in created Dynamic link. This link also called "payload" of
+ *     the Dynamic link.
+ * @param domainURIPrefix Domain URI Prefix of your App. This value must be either a. your assigned
+ * domain from the Firebase console or b. your custom domain or c. your custom domain with a valid
+ * path that is registered for Dynamic Links.  The domain URI prefix must start with a valid scheme
+ * (https://)
+ */
++ (instancetype)componentsWithLink:(NSURL *)link
+                   domainURIPrefix:(NSString *)domainURIPrefix
+    NS_SWIFT_UNAVAILABLE("Use init(link:domainURIPrefix:)");
+
+/**
+ * @method initWithLink:domain:
+ * @abstract Generates a Dynamic Link URL components object with the minimum necessary parameters
+ *     set to generate a fully-functional Dynamic Link.
+ * @param link Deep link to be stored in created Dynamic link. This link also called "payload" of
+ *     the Dynamic link.
+ * @param domainURIPrefix Domain URI Prefix of your App. This value must be either a. your assigned
+ * domain from the Firebase console or b. your custom domain or c. your custom domain with a valid
+ * path that is registered for Dynamic Links. The domain URI prefix must start with a valid scheme
+ * (https://).
+ */
+- (instancetype)initWithLink:(NSURL *)link domainURIPrefix:(NSString *)domainURIPrefix;
 
 /**
  * @method shortenURL:options:completion: