Temp: Start Android plugin

android/build.gradle.kts

@@ -3,7 +3,12 @@ plugins {
     id("kotlin-android")
     id("maven-publish")
     id("signing")
+
+    // API docs
     id("org.jetbrains.dokka") version "1.6.10"
+
+    // Custom plugin to generate the native libs and bindings file
+    id("org.bitcoindevkit.plugins.generate-android-bindings")
 }
 
 android {

buildSrc/src/main/kotlin/org/bitcoindevkit/plugins/generate-android-bindings.gradle.kts

@@ -0,0 +1,91 @@
+package org.bitcoindevkit.plugins
+
+import org.gradle.kotlin.dsl.register
+
+val operatingSystem: OS = when {
+    System.getProperty("os.name").contains("mac", ignoreCase = true) -> OS.MAC
+    System.getProperty("os.name").contains("linux", ignoreCase = true) -> OS.LINUX
+    else -> OS.OTHER
+}
+val architecture: Arch = when (System.getProperty("os.arch")) {
+    "x86_64" -> Arch.X86_64
+    "aarch64" -> Arch.AARCH64
+    else -> Arch.OTHER
+}
+
+// register a task of type Exec called buildJvmBinary
+// which will run something like
+// cargo build --release --target aarch64-apple-darwin
+val buildJvmBinary by tasks.register<Exec>("buildJvmBinary") {
+    // group = "Bitcoindevkit"
+    // description = "Build the JVM binaries for the bitcoindevkit"
+
+    workingDir("${project.projectDir}/../bdk-ffi")
+    val cargoArgs: MutableList<String> = mutableListOf("build", "--release", "--target")
+
+    if (operatingSystem == OS.MAC && architecture == Arch.X86_64) {
+        cargoArgs.add("x86_64-apple-darwin")
+    } else if (operatingSystem == OS.MAC && architecture == Arch.AARCH64) {
+        cargoArgs.add("aarch64-apple-darwin")
+    } else if (operatingSystem == OS.LINUX) {
+        cargoArgs.add("x86_64-unknown-linux-gnu")
+    }
+
+    executable("cargo")
+    args(cargoArgs)
+
+    doLast {
+        println("Native library for bdk-jvm on ${cargoArgs.last()} successfully built")
+    }
+}
+//
+// // move the native libs build by cargo from bdk-ffi/target/.../release/
+// // to their place in the bdk-jvm library
+// val moveNativeJvmLib by tasks.register<Copy>("moveNativeJvmLib") {
+//     // group = "Bitcoindevkit"
+//     // description = "Move the native libraries to the bdk-jvm project"
+//     dependsOn(buildJvmBinary)
+//
+//     var targetDir = ""
+//     var resDir = ""
+//     if (operatingSystem == OS.MAC && architecture == Arch.X86_64) {
+//         targetDir = "x86_64-apple-darwin"
+//         resDir = "darwin-x86-64"
+//     } else if (operatingSystem == OS.MAC && architecture == Arch.AARCH64) {
+//         targetDir = "aarch64-apple-darwin"
+//         resDir = "darwin-aarch64"
+//     } else if (operatingSystem == OS.LINUX) {
+//         targetDir = "x86_64-unknown-linux-gnu"
+//         resDir = "linux-x86-64"
+//     }
+//
+//     from("${project.projectDir}/../bdk-ffi/target/$targetDir/release/libbdkffi.dylib")
+//     into("${project.projectDir}/../jvm/src/main/resources/$resDir/")
+//
+//     doLast {
+//         println("$targetDir native binaries for JVM moved to ./jvm/src/main/resources/$resDir/")
+//     }
+// }
+//
+// // generate the bindings using the bdk-ffi-bindgen tool
+// // created in the bdk-ffi submodule
+// val generateJvmBindings by tasks.register<Exec>("generateJvmBindings") {
+//     // group = "Bitcoindevkit"
+//     // description = "Building the bindings file for the bitcoindevkit"
+//     dependsOn(moveNativeJvmLib)
+//
+//     workingDir("${project.projectDir}/../bdk-ffi")
+//     executable("cargo")
+//     args("run", "--package", "bdk-ffi-bindgen", "--", "--language", "kotlin", "--out-dir", "../jvm/src/main/kotlin")
+//
+//     doLast {
+//         println("JVM bindings file successfully created")
+//     }
+// }
+//
+//
+// tasks.register("buildAndroidLib") {
+//     group = "Bitcoindevkit"
+//     description = "Aggregate task to build Android library"
+//     dependsOn(buildJvmBinary, moveNativeJvmLib, generateJvmBindings)
+// }