Introduce CdnApi and configure CDN base URL per flavor

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: frett

app/build.gradle.kts

@@ -46,6 +46,7 @@ android {
             applicationIdSuffix = ".stage"
 
             buildConfigField("String", "MOBILE_CONTENT_API", "\"$URI_MOBILE_CONTENT_API_STAGE\"")
+            buildConfigField("String", "MOBILE_CONTENT_CDN", "\"https://mobilecontent-stage.cru.org\"")
 
             // Facebook
             resValue("string", "facebook_app_id", "448969905944197")
@@ -61,6 +62,7 @@ android {
         }
         named("production") {
             buildConfigField("String", "MOBILE_CONTENT_API", "\"$URI_MOBILE_CONTENT_API_PRODUCTION\"")
+            buildConfigField("String", "MOBILE_CONTENT_CDN", "\"https://mobilecontent.cru.org\"")
 
             // Facebook
             resValue("string", "facebook_app_id", "2236701616451487")

app/src/main/kotlin/org/cru/godtools/dagger/ConfigModule.kt

@@ -12,6 +12,7 @@ import org.cru.godtools.api.ApiConfig
 object ConfigModule {
     @get:Provides
     val apiConfig = ApiConfig(
-        mobileContentApiUrl = BuildConfig.MOBILE_CONTENT_API
+        mobileContentApiUrl = BuildConfig.MOBILE_CONTENT_API,
+        cdnUrl = BuildConfig.MOBILE_CONTENT_CDN
     )
 }

library/api/src/main/kotlin/org/cru/godtools/api/ApiConfig.kt

@@ -1,5 +1,6 @@
 package org.cru.godtools.api
 
 data class ApiConfig(
-    val mobileContentApiUrl: String
+    val mobileContentApiUrl: String,
+    val cdnUrl: String,
 )

library/api/src/main/kotlin/org/cru/godtools/api/ApiModule.kt

@@ -196,4 +196,13 @@ object ApiModule {
         .callFactory(okhttp)
         .build().create<CampaignFormsApi>()
     // endregion Adobe APIs
+
+    // region CDN APIs
+    @Provides
+    @Reusable
+    fun cdnApi(okhttp: OkHttpClient, apiConfig: ApiConfig): CdnApi = Retrofit.Builder().baseUrl(apiConfig.cdnUrl)
+        .callFactory(okhttp)
+        .build()
+        .create()
+    // endregion CDN APIs
 }

library/api/src/main/kotlin/org/cru/godtools/api/CdnApi.kt

@@ -0,0 +1,13 @@
+package org.cru.godtools.api
+
+import okhttp3.ResponseBody
+import retrofit2.Response
+import retrofit2.http.GET
+import retrofit2.http.Path
+import retrofit2.http.Streaming
+
+interface CdnApi {
+    @Streaming
+    @GET("translations/files/{filename}")
+    suspend fun downloadPublishedFile(@Path("filename") name: String): Response<ResponseBody>
+}