#!/bin/bash
set -e
set +x

# -------------------------------------------------------------------------------
# mutable global variables
# -------------------------------------------------------------------------------
TOOLCHAIN=clang # gcc/clang toolchain

# -------------------------------------------------------------------------------
# readonly global variables
# -------------------------------------------------------------------------------
readonly ROOT_PATH=$(pwd)
readonly ANDROID_ABI=1ドル
readonly ANDROID_PLATFORM="android-2ドル"
readonly BUILD_ROOT=build/Android
readonly BUILD_DIR=${BUILD_ROOT}/${ANDROID_ABI}-api-2ドル

# -------------------------------------------------------------------------------
# tasks
# -------------------------------------------------------------------------------
__make_build_dir() {
 if [ ! -d "${BUILD_DIR}" ]; then
echo "-- [INFO] BUILD_DIR: ${BUILD_DIR} not exists, setup manually ..."
 if [ ! -d "${BUILD_ROOT}" ]; then
mkdir -p "${BUILD_ROOT}" && echo "-- [INFO] Created ${BUILD_ROOT} !"
 fi
mkdir -p "${BUILD_DIR}" && echo "-- [INFO] Created ${BUILD_DIR} !"
 else
echo "-- [INFO] Found BUILD_DIR: ${BUILD_DIR}"
 fi
}

__check_cxx_envs() {
 if [ $LDFLAGS ]; then
echo "-- [INFO] Found LDFLAGS: ${LDFLAGS}, \c"
 echo "unset it before crossing compiling ${ANDROID_ABI}"
 unset LDFLAGS
 fi
 if [ $CPPFLAGS ]; then
echo "-- [INFO] Found CPPFLAGS: ${CPPFLAGS}, \c"
 echo "unset it before crossing compiling ${ANDROID_ABI}"
 unset CPPFLAGS
 fi
 if [ $CPLUS_INCLUDE_PATH ]; then
echo "-- [INFO] Found CPLUS_INCLUDE_PATH: ${CPLUS_INCLUDE_PATH}, \c"
 echo "unset it before crossing compiling ${ANDROID_ABI}"
 unset CPLUS_INCLUDE_PATH
 fi
 if [ $C_INCLUDE_PATH ]; then
echo "-- [INFO] Found C_INCLUDE_PATH: ${C_INCLUDE_PATH}, \c"
 echo "unset it before crossing compiling ${ANDROID_ABI}"
 unset C_INCLUDE_PATH
 fi
}

__set_android_ndk() {
 if [ -z $ANDROID_NDK ]; then
echo "-- [INFO] ANDROID_NDK not exists, please setup manually ..."
 exit 0
 else
echo "-- [INFO] Found ANDROID_NDK: ${ANDROID_NDK}"
 fi
 if [ "$ANDROID_NDK" ]; then
NDK_VERSION=$(echo $ANDROID_NDK | egrep -o "[0-9]{2}" | head -n 1)
 if [ "$NDK_VERSION" -gt 17 ]; then
TOOLCHAIN=clang
 fi
echo "-- [INFO] Checked ndk version: ${NDK_VERSION}"
 echo "-- [INFO] Selected toolchain: ${TOOLCHAIN}"
 fi
}

__build_fastdeploy_android_shared() {

 local ANDROID_STL=c++_shared # c++_static
 local ANDROID_TOOLCHAIN=${TOOLCHAIN}
 local TOOLCHAIN_FILE=${ANDROID_NDK}/build/cmake/android.toolchain.cmake
 local FASDEPLOY_INSTALL_DIR="${ROOT_PATH}/${BUILD_DIR}/install"
 cd "${BUILD_DIR}" && echo "-- [INFO] Working Dir: ${PWD}"

 cmake -DCMAKE_TOOLCHAIN_FILE=${TOOLCHAIN_FILE} \
 -DCMAKE_BUILD_TYPE=MinSizeRel \
 -DANDROID_ABI=${ANDROID_ABI} \
 -DANDROID_NDK=${ANDROID_NDK} \
 -DANDROID_PLATFORM=${ANDROID_PLATFORM} \
 -DANDROID_STL=${ANDROID_STL} \
 -DANDROID_TOOLCHAIN=${ANDROID_TOOLCHAIN} \
 -DENABLE_ORT_BACKEND=OFF \
 -DENABLE_LITE_BACKEND=ON \
 -DENABLE_PADDLE2ONNX=OFF \
 -DENABLE_FLYCV=ON \
 -DENABLE_TEXT=OFF \
 -DENABLE_VISION=ON \
 -DBUILD_EXAMPLES=ON \
 -DWITH_ANDROID_OPENCV_STATIC=OFF \
 -DWITH_ANDROID_LITE_STATIC=OFF \
 -DWITH_ANDROID_OPENMP=OFF \
 -DCMAKE_INSTALL_PREFIX=${FASDEPLOY_INSTALL_DIR} \
 -Wno-dev ../../.. && make -j8 && make install

 echo "-- [INFO][built][${ANDROID_ABI}][${BUILD_DIR}/install]"
}

main() {
 __make_build_dir
 __check_cxx_envs
 __set_android_ndk
 __build_fastdeploy_android_shared
 exit 0
}

main

# Usage:
# ./scripts/android/build_android_cpp.sh arm64-v8a 21
# ./scripts/android/build_android_cpp.sh armeabi-v7a 21