Bring back clangd

Author: m-bert

packages/react-native-gesture-handler/android/build.gradle.kts

@@ -130,7 +130,31 @@ android {
 
     sourceSets["main"].java.srcDirs(buildListOfJavaSrcDirs())
 
-    // TODO: Bring back clangd
+    if (isGHExampleApp()) {
+        tasks.withType<com.android.build.gradle.tasks.ExternalNativeBuildJsonTask>().configureEach {
+            doLast {
+                val hashRegex = """/Debug/([^/]+)/logs""".toRegex()
+                val archRegex = """/logs/([^/]+)$""".toRegex()
+
+                val path = outputs.files.singleFile.path
+
+                val hashResults = hashRegex.find(path)
+                val hash = hashResults?.groups?.get(1)?.value
+
+                val archResults = archRegex.find(path)
+                val arch = archResults?.groups?.get(1)?.value
+
+                val rootDir = File(project.projectDir, "../../..")
+                val generated = File(project.projectDir, ".cxx/Debug/$hash/$arch/compile_commands.json")
+                
+                if (generated != null) {
+                    val output = File(rootDir, "compile_commands.json")
+                    output.writeText(generated.readText())
+                    println("Generated clangd metadata.")
+                }
+            }
+        }
+    }
 }
 
 dependencies {