#!/bin/bash

BINDINGS_DIR="bindings/kotlin"
TARGET_DIR="target"
PROJECT_DIR="ldk-node-android"
UNIFFI_BINDGEN_BIN="cargo run --manifest-path bindings/uniffi-bindgen/Cargo.toml"

export_variable_if_not_present() {
  local name="$1"
  local value="$2"

  # Check if the variable is already set
  if [ -z "${!name}" ]; then
    export "$name=$value"
    echo "Exported $name=$value"
  else
    echo "$name is already set to ${!name}, not exporting."
  fi
}

case "$OSTYPE" in
    linux-gnu)
      export_variable_if_not_present "ANDROID_NDK_ROOT" "/opt/android-ndk"
      export_variable_if_not_present "LLVM_ARCH_PATH" "linux-x86_64"
      ;;
    darwin*)
      export_variable_if_not_present "ANDROID_NDK_ROOT" "/opt/homebrew/share/android-ndk"
      export_variable_if_not_present "LLVM_ARCH_PATH" "darwin-x86_64"
      ;;
    *)
      echo "Unknown operating system: $OSTYPE"
      ;;
    esac

PATH="$ANDROID_NDK_ROOT/toolchains/llvm/prebuilt/$LLVM_ARCH_PATH/bin:$PATH"

rustup target add x86_64-linux-android aarch64-linux-android armv7-linux-androideabi
CFLAGS="-D__ANDROID_MIN_SDK_VERSION__=21" AR=llvm-ar CARGO_TARGET_X86_64_LINUX_ANDROID_LINKER="x86_64-linux-android21-clang" CC="x86_64-linux-android21-clang" cargo build --profile release-smaller --features uniffi --target x86_64-linux-android || exit 1
CFLAGS="-D__ANDROID_MIN_SDK_VERSION__=21" AR=llvm-ar CARGO_TARGET_ARMV7_LINUX_ANDROIDEABI_LINKER="armv7a-linux-androideabi21-clang" CC="armv7a-linux-androideabi21-clang" cargo build --profile release-smaller --features uniffi --target armv7-linux-androideabi || exit 1
CFLAGS="-D__ANDROID_MIN_SDK_VERSION__=21" AR=llvm-ar CARGO_TARGET_AARCH64_LINUX_ANDROID_LINKER="aarch64-linux-android21-clang" CC="aarch64-linux-android21-clang" cargo build --profile release-smaller --features uniffi --target aarch64-linux-android || exit 1
$UNIFFI_BINDGEN_BIN generate bindings/ldk_node.udl --language kotlin --config uniffi-android.toml -o "$BINDINGS_DIR"/"$PROJECT_DIR"/lib/src/main/kotlin || exit 1

JNI_LIB_DIR="$BINDINGS_DIR"/"$PROJECT_DIR"/lib/src/main/jniLibs/ 
mkdir -p $JNI_LIB_DIR/x86_64 || exit 1
mkdir -p $JNI_LIB_DIR/armeabi-v7a || exit 1
mkdir -p $JNI_LIB_DIR/arm64-v8a || exit 1
cp $TARGET_DIR/x86_64-linux-android/release-smaller/libldk_node.so $JNI_LIB_DIR/x86_64/ || exit 1
cp $TARGET_DIR/armv7-linux-androideabi/release-smaller/libldk_node.so $JNI_LIB_DIR/armeabi-v7a/ || exit 1
cp $TARGET_DIR/aarch64-linux-android/release-smaller/libldk_node.so $JNI_LIB_DIR/arm64-v8a/ || exit 1