Implement SubscriptionsJSHelper in subscriptions-dummy (#6103)

Task/Issue URL:
https://app.asana.com/1/137249556945/project/1201807753394693/task/1210295149732040?focus=true

### Description
Add SubscriptionsJSHelper to subscriptions-dummy module in order to fix
F-droid build

### Steps to test this PR

- [ ] Check Build F-Droid apk CI check is green

### No UI changes

Author: nalcalag

app/src/androidTest/java/com/duckduckgo/app/browser/BrowserTabViewModelTest.kt

@@ -276,9 +276,9 @@ import com.duckduckgo.site.permissions.api.SitePermissionsManager
 import com.duckduckgo.site.permissions.api.SitePermissionsManager.LocationPermissionRequest
 import com.duckduckgo.site.permissions.api.SitePermissionsManager.SitePermissionQueryResponse
 import com.duckduckgo.site.permissions.api.SitePermissionsManager.SitePermissions
+import com.duckduckgo.subscriptions.api.SUBSCRIPTIONS_FEATURE_NAME
 import com.duckduckgo.subscriptions.api.Subscriptions
-import com.duckduckgo.subscriptions.impl.messaging.RealSubscriptionsJSHelper.Companion.SUBSCRIPTIONS_FEATURE_NAME
-import com.duckduckgo.subscriptions.impl.messaging.SubscriptionsJSHelper
+import com.duckduckgo.subscriptions.api.SubscriptionsJSHelper
 import com.duckduckgo.sync.api.favicons.FaviconsFetchingPrompt
 import com.duckduckgo.voice.api.VoiceSearchAvailability
 import com.duckduckgo.voice.api.VoiceSearchAvailabilityPixelLogger

app/src/main/java/com/duckduckgo/app/browser/BrowserTabViewModel.kt

@@ -341,9 +341,9 @@ import com.duckduckgo.site.permissions.api.SitePermissionsManager
 import com.duckduckgo.site.permissions.api.SitePermissionsManager.LocationPermissionRequest
 import com.duckduckgo.site.permissions.api.SitePermissionsManager.SitePermissionQueryResponse
 import com.duckduckgo.site.permissions.api.SitePermissionsManager.SitePermissions
+import com.duckduckgo.subscriptions.api.SUBSCRIPTIONS_FEATURE_NAME
 import com.duckduckgo.subscriptions.api.Subscriptions
-import com.duckduckgo.subscriptions.impl.messaging.RealSubscriptionsJSHelper.Companion.SUBSCRIPTIONS_FEATURE_NAME
-import com.duckduckgo.subscriptions.impl.messaging.SubscriptionsJSHelper
+import com.duckduckgo.subscriptions.api.SubscriptionsJSHelper
 import com.duckduckgo.sync.api.favicons.FaviconsFetchingPrompt
 import dagger.Lazy
 import io.reactivex.schedulers.Schedulers

build.gradle

@@ -140,6 +140,7 @@ subprojects {
                                 && dependencyPath.endsWith("api")
                                 && dependencyPath != ":feature-toggles-api"
                                 && dependencyPath != ":navigation-api"
+                                && dependencyPath != ":js-messaging-api"
                         ) {
                             if (projectPath.endsWith(":feature-toggles-api") &&
                                     (dependencyPath == ":experiments-api"

subscriptions/subscriptions-api/build.gradle

@@ -23,6 +23,7 @@ apply from: "$rootProject.projectDir/gradle/android-library.gradle"
 
 dependencies {
     implementation project(path: ':navigation-api')
+    implementation project(':js-messaging-api')
     implementation KotlinX.coroutines.core
 }
 

subscriptions/subscriptions-api/src/main/java/com/duckduckgo/subscriptions/api/SubscriptionsJSHelper.kt

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2025 DuckDuckGo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.duckduckgo.subscriptions.api
+
+import com.duckduckgo.js.messaging.api.JsCallbackData
+import org.json.JSONObject
+
+interface SubscriptionsJSHelper {
+    suspend fun processJsCallbackMessage(
+        featureName: String,
+        method: String,
+        id: String?,
+        data: JSONObject?,
+    ): JsCallbackData?
+}
+
+const val SUBSCRIPTIONS_FEATURE_NAME = "subscriptions"

subscriptions/subscriptions-dummy-impl/build.gradle

@@ -27,6 +27,7 @@ dependencies {
     implementation project(':anvil-annotations')
     implementation project(':di')
     implementation project(':subscriptions-api')
+    implementation project(':js-messaging-api')
 
     implementation KotlinX.coroutines.android
     implementation Google.dagger

subscriptions/subscriptions-dummy-impl/src/main/java/com/duckduckgo/subscriptions/impl/SubscriptionsJSHelperDummy.kt

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2025 DuckDuckGo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.duckduckgo.subscriptions.impl
+
+import com.duckduckgo.di.scopes.AppScope
+import com.duckduckgo.js.messaging.api.JsCallbackData
+import com.duckduckgo.subscriptions.api.SubscriptionsJSHelper
+import com.squareup.anvil.annotations.ContributesBinding
+import javax.inject.Inject
+import org.json.JSONObject
+
+@ContributesBinding(AppScope::class)
+class SubscriptionsJSHelperDummy @Inject constructor() : SubscriptionsJSHelper {
+    override suspend fun processJsCallbackMessage(
+        featureName: String,
+        method: String,
+        id: String?,
+        data: JSONObject?,
+    ): JsCallbackData? {
+        return null
+    }
+}

subscriptions/subscriptions-impl/src/main/java/com/duckduckgo/subscriptions/impl/messaging/SubscriptionsJSHelper.kt

@@ -18,21 +18,13 @@ package com.duckduckgo.subscriptions.impl.messaging
 
 import com.duckduckgo.di.scopes.AppScope
 import com.duckduckgo.js.messaging.api.JsCallbackData
+import com.duckduckgo.subscriptions.api.SubscriptionsJSHelper
 import com.duckduckgo.subscriptions.impl.SubscriptionsManager
 import com.squareup.anvil.annotations.ContributesBinding
 import javax.inject.Inject
 import org.json.JSONArray
 import org.json.JSONObject
 
-interface SubscriptionsJSHelper {
-    suspend fun processJsCallbackMessage(
-        featureName: String,
-        method: String,
-        id: String?,
-        data: JSONObject?,
-    ): JsCallbackData?
-}
-
 @ContributesBinding(AppScope::class)
 class RealSubscriptionsJSHelper @Inject constructor(
     private val subscriptionsManager: SubscriptionsManager,
@@ -77,7 +69,6 @@ class RealSubscriptionsJSHelper @Inject constructor(
     }
 
     companion object {
-        const val SUBSCRIPTIONS_FEATURE_NAME = "subscriptions"
         private const val METHOD_HANDSHAKE = "handshake"
         private const val METHOD_SUBSCRIPTION_DETAILS = "subscriptionDetails"
         private const val AVAILABLE_MESSAGES = "availableMessages"