Merge pull request #118 from callstack/feat/expo-support

feat: add expo support for brownfield gradle plugin

Author: hurali97

gradle-plugins/react/README.md

@@ -132,6 +132,20 @@ dependencies {
 
 <hr/>
 
+- **Expo Support**
+
+By default expo support is disabled. You can enable it by setting the following to `true`:
+
+```kts
+reactBrownfield {
+    isExpo = true
+}
+```
+
+This will take care of linking the expo dependencies like `expo-image` to your AAR.
+
+<hr/>
+
 ## Tooling
 
 - We are using `ktlint` and `detekt` for formatting and linting

gradle-plugins/react/brownfield/src/main/kotlin/com/callstack/react/brownfield/artifacts/ArtifactsResolver.kt

@@ -50,7 +50,48 @@ class ArtifactsResolver(
         }
     }
 
+    private fun embedExpoDependencies() {
+        /**
+         * expo project does not exist in example-android-library so doing an
+         * early exit.
+         */
+        if (baseProject.project.name == "example-android-library") {
+            return
+        }
+
+        /**
+         * The expo third party dependencies are linked to `expo` project.
+         * They are linked via `api` configuration and in two ways. In the
+         * first way, they are linked as a subProject or local dependencies.
+         * In the second way, they are linked as local maven hosted dependencies.
+         *
+         * We get those dependencies of `expo` project and add those to the consumer
+         * library project.
+         */
+        val expoProject = baseProject.project.rootProject.project("expo")
+        val expoConfig = expoProject.configurations.findByName("api")
+        expoConfig?.dependencies?.forEach {
+            if (extension.resolveLocalDependencies) {
+                if (it is DefaultProjectDependency) {
+                    baseProject.project.dependencies.add(
+                        CONFIG_NAME,
+                        expoProject.dependencies.project(mapOf("path" to ":${it.name}")),
+                    )
+                } else {
+                    baseProject.project.dependencies.add(
+                        CONFIG_NAME,
+                        it,
+                    )
+                }
+            }
+        }
+    }
+
     private fun embedDefaultDependencies(configName: String) {
+        if (extension.isExpo) {
+            embedExpoDependencies()
+        }
+
         val config = baseProject.project.configurations.findByName(configName)
         val defaultDependencies = config?.dependencies?.filterIsInstance<DefaultProjectDependency>()
         defaultDependencies?.forEach { dependency ->
@@ -95,7 +136,7 @@ class ArtifactsResolver(
     private fun resolveArtifacts(configuration: Configuration): Collection<ResolvedArtifact> {
         val artifacts = ArrayList<ResolvedArtifact>()
         configuration.resolvedConfiguration.resolvedArtifacts.forEach { artifact ->
-            if (artifact.type != ARTIFACT_TYPE_AAR || artifact.type != ARTIFACT_TYPE_JAR) {
+            if (artifact.type != ARTIFACT_TYPE_AAR && artifact.type != ARTIFACT_TYPE_JAR) {
                 throw ProjectConfigurationException("Unsupported dependency. Please provide either Aar or Jar dependency", listOf())
             }
             artifacts.add(artifact)

gradle-plugins/react/brownfield/src/main/kotlin/com/callstack/react/brownfield/processors/VariantHelper.kt

@@ -148,7 +148,7 @@ class VariantHelper(private val variant: LibraryVariant) : BaseProject() {
             filteredSourceSets.forEach { sourceSet ->
                 val filteredAarLibs = aarLibraries.filter { it.getAssetsDir().exists() }
                 filteredAarLibs.forEach {
-                    sourceSet.assets.srcDir(it)
+                    sourceSet.assets.srcDir(it.getAssetsDir())
                 }
             }
         }

gradle-plugins/react/brownfield/src/main/kotlin/com/callstack/react/brownfield/utils/Extension.kt

@@ -29,4 +29,11 @@ open class Extension {
      * Default value is `app`
      */
     var appProjectName = "app"
+
+    /**
+     * Sets whether the consumer project is based on Expo.
+     *
+     * Default value is `false`
+     */
+    var isExpo = false
 }