Speed `react-native run-android` up (more)

React Native's Gradle script does not bundle the JS bundle in the Debug
configuration. Copy that source code (and adapt it) into our sdk Gradle
script.

android/sdk/build.gradle

@@ -1,5 +1,7 @@
 apply plugin: 'com.android.library'
 
+def config = project.hasProperty('react') ? project.react : [];
+
 android {
     compileSdkVersion rootProject.ext.compileSdkVersion
     buildToolsVersion rootProject.ext.buildToolsVersion
@@ -43,75 +45,97 @@ void runBefore(String dependentTaskName, Task task) {
 }
 
 gradle.projectsEvaluated {
-    android.buildTypes.all { buildType ->
-        def buildNameCapitalized = "${buildType.name.capitalize()}"
-        def bundlePath = "${buildDir}/intermediates/bundles/${buildType.name}"
-
-        // Bundle fonts in react-native-vector-icons.
-        //
-
-        def currentFontTask = tasks.create(name: "${buildType.name}CopyFonts", type: Copy) {
-            from("${projectDir}/../../fonts/jitsi.ttf")
-            from("${projectDir}/../../node_modules/react-native-vector-icons/Fonts/")
-            into("${bundlePath}/assets/fonts")
+    // Grab all build types and product flavors
+    def buildTypes = android.buildTypes.collect { type -> type.name }
+    def productFlavors = android.productFlavors.collect { flavor -> flavor.name }
+
+    // When no product flavors defined, use empty
+    if (!productFlavors) productFlavors.add('')
+
+    productFlavors.each { productFlavorName ->
+        buildTypes.each { buildTypeName ->
+            // Create variant and target names
+            def flavorNameCapitalized = "${productFlavorName.capitalize()}"
+            def buildNameCapitalized = "${buildTypeName.capitalize()}"
+            def targetName = "${flavorNameCapitalized}${buildNameCapitalized}"
+            def targetPath = productFlavorName ?
+                    "${productFlavorName}/${buildTypeName}" :
+                    "${buildTypeName}"
+
+            // Bundle JavaScript and React resources (like react-native/react.gradle)
+            //
+
+            // React js bundle directories
+            def jsBundleDir = file("$buildDir/intermediates/assets/${targetPath}")
+            def resourcesDir = file("$buildDir/intermediates/res/merged/${targetPath}")
+            def jsBundleFile = file("${jsBundleDir}/index.android.bundle")
+
+            // Create dirs if they are not there (e.g. the "clean" task just ran)
+            jsBundleDir.mkdirs()
+            resourcesDir.mkdirs()
+
+            // Bundle fonts in react-native-vector-icons.
+            //
+
+            def currentFontTask = tasks.create(
+                    name: "${buildTypeName}CopyFonts",
+                    type: Copy) {
+
+                from("${projectDir}/../../fonts/jitsi.ttf")
+                from("${projectDir}/../../node_modules/react-native-vector-icons/Fonts/")
+                into("${jsBundleDir}/fonts")
+            }
+
+            currentFontTask.dependsOn("merge${targetName}Resources")
+            currentFontTask.dependsOn("merge${targetName}Assets")
+
+            runBefore("process${flavorNameCapitalized}Armeabi-v7a${buildNameCapitalized}Resources", currentFontTask)
+            runBefore("process${flavorNameCapitalized}X86${buildNameCapitalized}Resources", currentFontTask)
+            runBefore("processUniversal${targetName}Resources", currentFontTask)
+            runBefore("process${targetName}Resources", currentFontTask)
+
+            // Bundle task name for variant
+            def bundleJsAndAssetsTaskName = "bundle${targetName}JsAndAssets"
+
+            def currentBundleTask = tasks.create(
+                    name: bundleJsAndAssetsTaskName,
+                    type: Exec) {
+
+                // Set up inputs and outputs so gradle can cache the result.
+                def reactRoot = file("${projectDir}/../../")
+                inputs.files fileTree(dir: reactRoot, excludes: ["android/**", "ios/**"])
+                outputs.dir jsBundleDir
+                outputs.dir resourcesDir
+
+                // Set up the call to the react-native cli.
+                workingDir reactRoot
+
+                // Create JS bundle
+                def devEnabled = !targetName.toLowerCase().contains('release')
+                commandLine(
+                    'node',
+                    'node_modules/react-native/local-cli/cli.js',
+                    'bundle',
+                    '--assets-dest', resourcesDir,
+                    '--bundle-output', jsBundleFile,
+                    '--dev', "${devEnabled}",
+                    '--entry-file', 'index.android.js',
+                    '--platform', 'android',
+                    '--reset-cache')
+
+                enabled config."bundleIn${targetName}" ||
+                    config."bundleIn${buildNameCapitalized}" ?:
+                            targetName.toLowerCase().contains('release')
+            }
+
+            // Hook bundle${productFlavor}${buildType}JsAndAssets into the android build process
+            currentBundleTask.dependsOn("merge${targetName}Resources")
+            currentBundleTask.dependsOn("merge${targetName}Assets")
+
+            runBefore("process${flavorNameCapitalized}Armeabi-v7a${buildNameCapitalized}Resources", currentBundleTask)
+            runBefore("process${flavorNameCapitalized}X86${buildNameCapitalized}Resources", currentBundleTask)
+            runBefore("processUniversal${targetName}Resources", currentBundleTask)
+            runBefore("process${targetName}Resources", currentBundleTask)
         }
-
-        currentFontTask.dependsOn("merge${buildNameCapitalized}Resources")
-        currentFontTask.dependsOn("merge${buildNameCapitalized}Assets")
-
-        runBefore("processArmeabi-v7a${buildNameCapitalized}Resources", currentFontTask)
-        runBefore("processX86${buildNameCapitalized}Resources", currentFontTask)
-        runBefore("processUniversal${buildNameCapitalized}Resources", currentFontTask)
-        runBefore("process${buildNameCapitalized}Resources", currentFontTask)
-
-        // Bundle JavaScript and React resources.
-        // (adapted from react-native/react.gradle)
-        //
-
-        // React JS bundle directories
-        def jsBundleDir = file("${bundlePath}/assets")
-        def resourcesDir = file("${bundlePath}/res/merged")
-        def jsBundleFile = file("${jsBundleDir}/index.android.bundle")
-
-        // Bundle task name for variant.
-        def bundleJsAndAssetsTaskName = "bundle${buildNameCapitalized}JsAndAssets"
-
-        def currentBundleTask = tasks.create(
-                name: bundleJsAndAssetsTaskName,
-                type: Exec) {
-
-            // Set up inputs and outputs so gradle can cache the result.
-            def reactRoot = file("${projectDir}/../../")
-            inputs.files fileTree(dir: reactRoot, excludes: ["android/**", "ios/**"])
-            outputs.dir jsBundleDir
-            outputs.dir resourcesDir
-
-            // Set up the call to the react-native cli.
-            workingDir reactRoot
-
-            // Create JS bundle
-            def devEnabled = !buildNameCapitalized.toLowerCase().contains("release")
-            commandLine(
-                "node",
-                "node_modules/react-native/local-cli/cli.js",
-                "bundle",
-                "--assets-dest", resourcesDir,
-                "--bundle-output", jsBundleFile,
-                "--dev", "${devEnabled}",
-                "--entry-file", "index.android.js",
-                "--platform", "android",
-                "--reset-cache")
-
-            // TODO: disable task in Debug mode?
-        }
-
-        // Hook bundle${productFlavor}${buildType}JsAndAssets into the android build process
-        currentBundleTask.dependsOn("merge${buildNameCapitalized}Resources")
-        currentBundleTask.dependsOn("merge${buildNameCapitalized}Assets")
-
-        runBefore("processArmeabi-v7a${buildNameCapitalized}Resources", currentBundleTask)
-        runBefore("processX86${buildNameCapitalized}Resources", currentBundleTask)
-        runBefore("processUniversal${buildNameCapitalized}Resources", currentBundleTask)
-        runBefore("process${buildNameCapitalized}Resources", currentBundleTask)
     }
 }