#!/bin/bash

set -xeu

sudo apt-get update

ubuntu_version="$(cat /etc/os-release | sed -nr 's:^VERSION_ID="(.+?)":\1: p')"

sudo apt-get install -y clang libclang-dev
case "$ubuntu_version" in
"20.04")
	# workaround to make clang_sys crate detect installed libclang
	sudo ln -fs libclang.so.1 /usr/lib/llvm-10/lib/libclang.so
	if [[ "$OPENCV_VERSION" == "4.2.0" ]]; then
		sudo apt-get -y install "libopencv-dev=${OPENCV_VERSION}*"
		exit 0
	fi
	;;

"22.04")
	# workaround to make clang_sys crate detect installed libclang
	sudo ln -fs libclang.so.1 /usr/lib/llvm-14/lib/libclang.so
	if [[ "$OPENCV_VERSION" == "4.5.4" ]]; then
		sudo apt-get -y install "libopencv-dev=${OPENCV_VERSION}*"
		exit 0
	fi
	;;

"24.04")
	if [[ "$OPENCV_VERSION" == "4.6.0" ]]; then
		sudo apt-get -y install "libopencv-dev=${OPENCV_VERSION}*"
		exit 0
	fi
	;;
esac

BUILD_FLAGS="
	-D BUILD_CUDA_STUBS=OFF
	-D BUILD_DOCS=OFF
	-D BUILD_EXAMPLES=OFF
	-D BUILD_IPP_IW=ON
	-D BUILD_ITT=ON
	-D BUILD_JASPER=OFF
	-D BUILD_JAVA=OFF
	-D BUILD_JPEG=OFF
	-D BUILD_OPENEXR=OFF
	-D BUILD_OPENJPEG=OFF
	-D BUILD_PERF_TESTS=OFF
	-D BUILD_PNG=OFF
	-D BUILD_PROTOBUF=ON
	-D BUILD_SHARED_LIBS=ON
	-D BUILD_TBB=OFF
	-D BUILD_TESTS=OFF
	-D BUILD_TIFF=OFF
	-D BUILD_WEBP=OFF
	-D BUILD_WITH_DEBUG_INFO=OFF
	-D BUILD_WITH_DYNAMIC_IPP=OFF
	-D BUILD_ZLIB=OFF
	-D BUILD_opencv_apps=OFF
	-D BUILD_opencv_python2=OFF
	-D BUILD_opencv_python3=OFF
	-D CMAKE_BUILD_TYPE=Release
	-D CMAKE_INSTALL_PREFIX=/usr
	-D CV_DISABLE_OPTIMIZATION=OFF
	-D CV_ENABLE_INTRINSICS=ON
	-D ENABLE_CONFIG_VERIFICATION=OFF
	-D ENABLE_FAST_MATH=OFF
	-D ENABLE_LTO=OFF
	-D ENABLE_PIC=ON
	-D ENABLE_PRECOMPILED_HEADERS=OFF
	-D INSTALL_CREATE_DISTRIB=OFF
	-D INSTALL_C_EXAMPLES=OFF
	-D INSTALL_PYTHON_EXAMPLES=OFF
	-D INSTALL_TESTS=OFF
	-D OPENCV_ENABLE_MEMALIGN=OFF
	-D OPENCV_ENABLE_NONFREE=ON
	-D OPENCV_FORCE_3RDPARTY_BUILD=OFF
	-D OPENCV_GENERATE_PKGCONFIG=OFF
	-D PROTOBUF_UPDATE_FILES=OFF
	-D WITH_1394=ON
	-D WITH_ADE=ON
	-D WITH_ARAVIS=OFF
	-D WITH_CLP=OFF
	-D WITH_CUBLAS=OFF
	-D WITH_CUDA=OFF
	-D WITH_CUFFT=OFF
	-D WITH_EIGEN=ON
	-D WITH_FFMPEG=ON
	-D WITH_GDAL=ON
	-D WITH_GDCM=OFF
	-D WITH_GIGEAPI=OFF
	-D WITH_GPHOTO2=ON
	-D WITH_GSTREAMER=ON
	-D WITH_GSTREAMER_0_10=OFF
	-D WITH_GTK=OFF
	-D WITH_GTK_2_X=OFF
	-D WITH_HALIDE=OFF
	-D WITH_IMGCODEC_HDcR=ON
	-D WITH_IMGCODEC_PXM=ON
	-D WITH_IMGCODEC_SUNRASTER=ON
	-D WITH_INF_ENGINE=OFF
	-D WITH_IPP=ON
	-D WITH_ITT=ON
	-D WITH_JASPER=OFF
	-D WITH_JPEG=ON
	-D WITH_LAPACK=ON
	-D WITH_LIBV4L=OFF
	-D WITH_MATLAB=OFF
	-D WITH_MFX=OFF
	-D WITH_OPENCL=OFF
	-D WITH_OPENCLAMDBLAS=OFF
	-D WITH_OPENCLAMDFFT=OFF
	-D WITH_OPENCL_SVM=OFF
	-D WITH_OPENEXR=OFF
	-D WITH_OPENGL=ON
	-D WITH_OPENMP=OFF
	-D WITH_OPENNI2=OFF
	-D WITH_OPENNI=OFF
	-D WITH_OPENVX=OFF
	-D WITH_PNG=ON
	-D WITH_PROTOBUF=ON
	-D WITH_PTHREADS_PF=ON
	-D WITH_PVAPI=OFF
	-D WITH_QT=ON
	-D WITH_QUIRC=ON
	-D WITH_TBB=ON
	-D WITH_TIFF=ON
	-D WITH_UNICAP=OFF
	-D WITH_V4L=ON
	-D WITH_VA=ON
	-D WITH_VA_INTEL=ON
	-D WITH_VTK=ON
	-D WITH_WEBP=ON
	-D WITH_XIMEA=OFF
	-D WITH_XINE=OFF
"

sudo apt-get -y install build-essential cmake

if [[ "${OPENCV_LINKAGE:-dynamic}" == "static" ]]; then # static build
	BUILD_FLAGS="$BUILD_FLAGS
	-D BUILD_JPEG=ON
	-D BUILD_OPENJPEG=ON
	-D BUILD_PNG=ON
	-D BUILD_SHARED_LIBS=OFF
	-D BUILD_TIFF=ON
	-D BUILD_WEBP=ON
	-D BUILD_ZLIB=ON
	-D BUILD_opencv_freetype=OFF
	-D OPENCV_FORCE_3RDPARTY_BUILD=ON
	-D WITH_1394=OFF
	-D WITH_FFMPEG=OFF
	-D WITH_FREETYPE=OFF
	-D WITH_GDAL=OFF
	-D WITH_GPHOTO2=OFF
	-D WITH_GSTREAMER=OFF
	-D WITH_GTK=OFF
	-D WITH_LAPACK=OFF
	-D WITH_OPENGL=OFF
	-D WITH_QT=OFF
"
else # dynamic build
	case "$ubuntu_version" in
	"20.04")
		sudo apt-get -y install \
			libatlas-base-dev \
			libavcodec-dev \
			libavformat-dev \
			libavresample-dev \
			libceres-dev \
			libdc1394-22-dev \
			libeigen3-dev \
			libfreetype6-dev \
			libgdal-dev \
			libgflags-dev \
			libgoogle-glog-dev \
			libgphoto2-dev \
			libgstreamer-plugins-base1.0-dev \
			libharfbuzz-dev \
			libhdf5-dev \
			libjpeg-dev \
			liblapacke-dev \
			libleptonica-dev \
			libopenexr-dev \
			libpng-dev \
			libswscale-dev \
			libtbb-dev \
			libtesseract-dev \
			libtiff-dev \
			libunwind-dev \
			libvtk7-dev \
			libwebp-dev \
			qtbase5-dev
		;;

	"22.04")
		# runtime deps
		sudo apt-get -y install \
			libatlas3-base \
			libavcodec58 \
			libavformat58 \
			libceres2 \
			libdc1394-25 \
			libfreetype6 \
			libgdal30 \
			libgflags2.2 \
			libgoogle-glog0v5 \
			libgphoto2-6 \
			libgstreamer-plugins-base1.0-0 \
			libharfbuzz0b \
			libhdf5-103 \
			libjpeg8 \
			liblapacke \
			liblept5 \
			libopenexr25 \
			libpng16-16 \
			libqt5core5a \
			libqt5gui5 \
			libqt5opengl5 \
			libqt5test5 \
			libqt5widgets5 \
			libswscale5 \
			libtbb2 \
			libtesseract4 \
			libvtk7.1p \
			libwebp7

		# need to do that separately to remove conflicting packages
		sudo apt-get install libunwind-dev

		# build deps
		sudo apt-get -y install \
			libatlas-base-dev \
			libavcodec-dev \
			libavformat-dev \
			libceres-dev \
			libdc1394-dev \
			libeigen3-dev \
			libfreetype6-dev \
			libgdal-dev \
			libgflags-dev \
			libgoogle-glog-dev \
			libgphoto2-dev \
			libgstreamer-plugins-base1.0-dev \
			libharfbuzz-dev \
			libhdf5-dev \
			libjpeg-dev \
			liblapacke-dev \
			libleptonica-dev \
			libopenexr-dev \
			libpng-dev \
			libswscale-dev \
			libtbb2-dev \
			libtesseract-dev \
			libtiff-dev \
			libvtk7-dev \
			libwebp-dev \
			qtbase5-dev
		;;

	"24.04")
		# runtime deps
		sudo apt-get -y install \
			libatlas-base-dev \
			libavcodec-dev \
			libavformat-dev \
			libceres-dev \
			libdc1394-dev \
			libeigen3-dev \
			libfreetype6-dev \
			libgdal-dev \
			libgflags-dev \
			libgoogle-glog-dev \
			libgphoto2-dev \
			libgstreamer-plugins-base1.0-dev \
			libharfbuzz-dev \
			libhdf5-dev \
			libjpeg-dev \
			liblapacke64-dev \
			libleptonica-dev \
			libopenexr-dev \
			libpng-dev \
			libswscale-dev \
			libtbb-dev \
			libtesseract-dev \
			libtiff-dev \
			libunwind-dev \
			libvtk9-dev \
			libwebp-dev \
			qtbase5-dev
		;;
	esac
fi

dist_dir="$HOME/dist/"
build_dir="$HOME/build/opencv/opencv-$OPENCV_VERSION-build/"

mkdir -p "$dist_dir" "$build_dir"

opencv_src="$dist_dir/opencv-$OPENCV_VERSION"
if [ ! -d "$opencv_src" ]; then
	curl -L "https://github.com/opencv/opencv/archive/$OPENCV_VERSION.tar.gz" | tar -xz -C "$dist_dir"
fi

opencv_contrib_src="$dist_dir/opencv_contrib-$OPENCV_VERSION"
if [ ! -d "$opencv_contrib_src" ]; then
	curl -L "https://github.com/opencv/opencv_contrib/archive/$OPENCV_VERSION.tar.gz" | tar -xz -C "$dist_dir"
fi

# Qt build is broken in OpenCV 5.0.0-alpha
if [[ "$OPENCV_VERSION" == "5.0.0-alpha" ]]; then
	BUILD_FLAGS="$BUILD_FLAGS -D WITH_QT=OFF"
fi

cd "$build_dir"
cmake $BUILD_FLAGS \
	-D CMAKE_INSTALL_PREFIX=/usr \
	-D OPENCV_EXTRA_MODULES_PATH="$opencv_contrib_src/modules" \
	"$opencv_src"
make -j"$(nproc)"
sudo make -j"$(nproc)" install
