#!/usr/bin/env bash

set -e

if [ "$#" -lt 1 ]; then
    echo "Syntax: $0 [-system-libjpeg] [-system-libpng] [-system-libwebp] [-system-zstd] [-system-qt] [-skip-download] <output directory>"
    exit 1
fi

for arg in "$@"; do
	if [ "$arg" == "-system-libjpeg" ]; then
		echo "Skipping building libjpeg."
		SKIP_LIBJPEG=true
		shift
	elif [ "$arg" == "-system-libpng" ]; then
		echo "Skipping building libpng."
		SKIP_LIBPNG=true
		shift
	elif [ "$arg" == "-system-libwebp" ]; then
		echo "Skipping building libwebp."
		SKIP_LIBWEBP=true
		shift
	elif [ "$arg" == "-system-zstd" ]; then
		echo "Skipping building zstd."
		SKIP_ZSTD=true
		shift
	elif [ "$arg" == "-system-qt" ]; then
		echo "Skipping building Qt."
		SKIP_QT=true
		shift
	elif [ "$arg" == "-skip-download" ]; then
		echo "Not downloading sources."
		SKIP_DOWNLOAD=true
		shift
	fi
done

SCRIPTDIR=$(realpath $(dirname "${BASH_SOURCE[0]}"))
NPROCS="$(getconf _NPROCESSORS_ONLN)"
INSTALLDIR="$1"
if [ "${INSTALLDIR:0:1}" != "/" ]; then
	INSTALLDIR="$PWD/$INSTALLDIR"
fi

LIBBACKTRACE=ad106d5fdd5d960bd33fae1c48a351af567fd075
LIBJPEGTURBO=3.0.3
LIBPNG=1.6.43
LIBWEBP=1.4.0
SDL2=2.30.6
QT=6.7.2
ZSTD=1.5.6

CPUINFO=7524ad504fdcfcf75a18a133da6abd75c5d48053
DISCORD_RPC=144f3a3f1209994d8d9e8a87964a989cb9911c1e
SHADERC=f60bb80e255144e71776e2ad570d89b78ea2ab4f
SOUNDTOUCH=463ade388f3a51da078dc9ed062bf28e4ba29da7
SPIRV_CROSS=vulkan-sdk-1.3.290.0

mkdir -p deps-build
cd deps-build

if [ "$SKIP_DOWNLOAD" != true ]; then
	curl -C - -L \
		-O "https://github.com/ianlancetaylor/libbacktrace/archive/$LIBBACKTRACE.zip" \
		-O "https://github.com/libsdl-org/SDL/releases/download/release-$SDL2/SDL2-$SDL2.tar.gz" \
		-o "cpuinfo-$CPUINFO.tar.gz" "https://github.com/stenzek/cpuinfo/archive/$CPUINFO.tar.gz" \
		-o "discord-rpc-$DISCORD_RPC.tar.gz" "https://github.com/stenzek/discord-rpc/archive/$DISCORD_RPC.tar.gz" \
		-o "shaderc-$SHADERC.tar.gz" "https://github.com/stenzek/shaderc/archive/$SHADERC.tar.gz" \
		-o "soundtouch-$SOUNDTOUCH.tar.gz" "https://github.com/stenzek/soundtouch/archive/$SOUNDTOUCH.tar.gz"
fi

cat > SHASUMS <<EOF
fd6f417fe9e3a071cf1424a5152d926a34c4a3c5070745470be6cf12a404ed79  $LIBBACKTRACE.zip
c6ef64ca18a19d13df6eb22df9aff19fb0db65610a74cc81dae33a82235cacd4  SDL2-$SDL2.tar.gz
e1351218d270db49c3dddcba04fb2153b09731ea3fa6830e423f5952f44585be  cpuinfo-$CPUINFO.tar.gz
3eea5ccce6670c126282f1ba4d32c19d486db49a1a5cbfb8d6f48774784d310c  discord-rpc-$DISCORD_RPC.tar.gz
4c1780b6c65c27c4dcb109f08ab632241c98b77fe2e22be726c151ff514482bf  shaderc-$SHADERC.tar.gz
fe45c2af99f6102d2704277d392c1c83b55180a70bfd17fb888cc84a54b70573  soundtouch-$SOUNDTOUCH.tar.gz
EOF

if [ "$SKIP_LIBJPEG" != true ]; then
	if [ "$SKIP_DOWNLOAD" != true ]; then
		curl -C - -L -O "https://github.com/libjpeg-turbo/libjpeg-turbo/releases/download/$LIBJPEGTURBO/libjpeg-turbo-$LIBJPEGTURBO.tar.gz"
	fi
	cat >> SHASUMS <<EOF
343e789069fc7afbcdfe44dbba7dbbf45afa98a15150e079a38e60e44578865d  libjpeg-turbo-$LIBJPEGTURBO.tar.gz
EOF
fi
if [ "$SKIP_LIBPNG" != true ]; then
	if [ "$SKIP_DOWNLOAD" != true ]; then
		curl -C - -L -O "https://downloads.sourceforge.net/project/libpng/libpng16/$LIBPNG/libpng-$LIBPNG.tar.xz"
	fi
	cat >> SHASUMS <<EOF
6a5ca0652392a2d7c9db2ae5b40210843c0bbc081cbd410825ab00cc59f14a6c  libpng-$LIBPNG.tar.xz
EOF
fi
if [ "$SKIP_LIBWEBP" != true ]; then
	if [ "$SKIP_DOWNLOAD" != true ]; then
		curl -C - -L -O "https://storage.googleapis.com/downloads.webmproject.org/releases/webp/libwebp-$LIBWEBP.tar.gz"
	fi
	cat >> SHASUMS <<EOF
61f873ec69e3be1b99535634340d5bde750b2e4447caa1db9f61be3fd49ab1e5  libwebp-$LIBWEBP.tar.gz
EOF
fi
if [ "$SKIP_ZSTD" != true ]; then
	if [ "$SKIP_DOWNLOAD" != true ]; then
		curl -C - -L -O "https://github.com/facebook/zstd/releases/download/v$ZSTD/zstd-$ZSTD.tar.gz"
	fi
	cat >> SHASUMS <<EOF
8c29e06cf42aacc1eafc4077ae2ec6c6fcb96a626157e0593d5e82a34fd403c1  zstd-$ZSTD.tar.gz
EOF
fi
if [ "$SKIP_QT" != true ]; then
	if [ "$SKIP_DOWNLOAD" != true ]; then
		curl -C - -L \
			-O "https://download.qt.io/official_releases/qt/${QT%.*}/$QT/submodules/qtbase-everywhere-src-$QT.tar.xz" \
			-O "https://download.qt.io/official_releases/qt/${QT%.*}/$QT/submodules/qtimageformats-everywhere-src-$QT.tar.xz" \
			-O "https://download.qt.io/official_releases/qt/${QT%.*}/$QT/submodules/qtsvg-everywhere-src-$QT.tar.xz" \
			-O "https://download.qt.io/official_releases/qt/${QT%.*}/$QT/submodules/qttools-everywhere-src-$QT.tar.xz" \
			-O "https://download.qt.io/official_releases/qt/${QT%.*}/$QT/submodules/qttranslations-everywhere-src-$QT.tar.xz" \
			-O "https://download.qt.io/official_releases/qt/${QT%.*}/$QT/submodules/qtwayland-everywhere-src-$QT.tar.xz" 
	fi
	cat >> SHASUMS <<EOF
c5f22a5e10fb162895ded7de0963328e7307611c688487b5d152c9ee64767599  qtbase-everywhere-src-$QT.tar.xz
e1a1d8785fae67d16ad0a443b01d5f32663a6b68d275f1806ebab257485ce5d6  qtimageformats-everywhere-src-$QT.tar.xz
fb0d1286a35be3583fee34aeb5843c94719e07193bdf1d4d8b0dc14009caef01  qtsvg-everywhere-src-$QT.tar.xz
58e855ad1b2533094726c8a425766b63a04a0eede2ed85086860e54593aa4b2a  qttools-everywhere-src-$QT.tar.xz
9845780b5dc1b7279d57836db51aeaf2e4a1160c42be09750616f39157582ca9  qttranslations-everywhere-src-$QT.tar.xz
a2a057e1dd644bd44abb9990fecc194b2e25c2e0f39e81aa9fee4c1e5e2a8a5b  qtwayland-everywhere-src-$QT.tar.xz
EOF
fi

shasum -a 256 --check SHASUMS

# Have to clone with git, because it does version detection.
if [ "$SKIP_DOWNLOAD" != true ]; then
	if [ ! -d "SPIRV-Cross" ]; then
		git clone https://github.com/KhronosGroup/SPIRV-Cross/ -b $SPIRV_CROSS --depth 1
	fi
fi

echo "Building libbacktrace..."
rm -fr "libbacktrace-$LIBBACKTRACE"
unzip "$LIBBACKTRACE.zip"
cd "libbacktrace-$LIBBACKTRACE"
./configure --prefix="$INSTALLDIR"
make
make install
cd ..

if [ "$SKIP_LIBPNG" != true ]; then
	echo "Building libpng..."
	rm -fr "libpng-$LIBPNG"
	tar xf "libpng-$LIBPNG.tar.xz"
	cd "libpng-$LIBPNG"
	cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="$INSTALLDIR" -DCMAKE_INSTALL_PREFIX="$INSTALLDIR" -DBUILD_SHARED_LIBS=ON -DPNG_TESTS=OFF -DPNG_STATIC=OFF -DPNG_SHARED=ON -DPNG_TOOLS=OFF -B build -G Ninja
	cmake --build build --parallel
	ninja -C build install
	cd ..
fi

if [ "$SKIP_LIBJPEG" != true ]; then
	echo "Building libjpeg..."
	rm -fr "libjpeg-turbo-$LIBJPEGTURBO"
	tar xf "libjpeg-turbo-$LIBJPEGTURBO.tar.gz"
	cd "libjpeg-turbo-$LIBJPEGTURBO"
	cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="$INSTALLDIR" -DCMAKE_INSTALL_PREFIX="$INSTALLDIR" -DENABLE_STATIC=OFF -DENABLE_SHARED=ON -B build -G Ninja
	cmake --build build --parallel
	ninja -C build install
	cd ..
fi

if [ "$SKIP_ZSTD" != true ]; then
	echo "Building Zstandard..."
	rm -fr "zstd-$ZSTD"
	tar xf "zstd-$ZSTD.tar.gz"
	cd "zstd-$ZSTD"
	cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="$INSTALLDIR" -DCMAKE_INSTALL_PREFIX="$INSTALLDIR" -DBUILD_SHARED_LIBS=ON -DZSTD_BUILD_SHARED=ON -DZSTD_BUILD_STATIC=OFF -DZSTD_BUILD_PROGRAMS=OFF -B build -G Ninja build/cmake
	cmake --build build --parallel
	ninja -C build install
	cd ..
fi

if [ "$SKIP_LIBWEBP" != true ]; then
	echo "Building WebP..."
	rm -fr "libwebp-$LIBWEBP"
	tar xf "libwebp-$LIBWEBP.tar.gz"
	cd "libwebp-$LIBWEBP"
	cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="$INSTALLDIR" -DCMAKE_INSTALL_PREFIX="$INSTALLDIR" -B build -G Ninja \
		-DWEBP_BUILD_ANIM_UTILS=OFF -DWEBP_BUILD_CWEBP=OFF -DWEBP_BUILD_DWEBP=OFF -DWEBP_BUILD_GIF2WEBP=OFF -DWEBP_BUILD_IMG2WEBP=OFF \
		-DWEBP_BUILD_VWEBP=OFF -DWEBP_BUILD_WEBPINFO=OFF -DWEBP_BUILD_WEBPMUX=OFF -DWEBP_BUILD_EXTRAS=OFF -DBUILD_SHARED_LIBS=ON
	cmake --build build --parallel
	ninja -C build install
	cd ..
fi

echo "Building SDL2..."
rm -fr "SDL2-$SDL2"
tar xf "SDL2-$SDL2.tar.gz"
cd "SDL2-$SDL2"
cmake -B build -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="$INSTALLDIR" -DCMAKE_INSTALL_PREFIX="$INSTALLDIR" -DBUILD_SHARED_LIBS=ON -DSDL_SHARED=ON -DSDL_STATIC=OFF -G Ninja
cmake --build build --parallel
ninja -C build install
cd ..

if [ "$SKIP_QT" != true ]; then
	# Couple notes:
	# -fontconfig is needed otherwise Qt Widgets render only boxes.
	# -qt-doubleconversion avoids a dependency on libdouble-conversion.
	# ICU avoids pulling in a bunch of large libraries, and hopefully we can get away without it.
	# OpenGL is needed to render window decorations in Wayland, apparently.
	echo "Building Qt Base..."
	rm -fr "qtbase-everywhere-src-$QT"
	tar xf "qtbase-everywhere-src-$QT.tar.xz"
	cd "qtbase-everywhere-src-$QT"
	patch -p1 < "$SCRIPTDIR/qtbase-disable-pcre2-jit.patch"
	mkdir build
	cd build
	../configure -prefix "$INSTALLDIR" -release -dbus-linked -gui -widgets -fontconfig -qt-doubleconversion -ssl -openssl-runtime -opengl desktop -qpa xcb,wayland -xkbcommon -xcb -gtk -- -DFEATURE_cups=OFF -DFEATURE_dbus=ON -DFEATURE_icu=OFF -DFEATURE_sql=OFF -DFEATURE_system_png=ON -DFEATURE_system_jpeg=ON -DFEATURE_system_zlib=ON -DFEATURE_system_freetype=ON -DFEATURE_system_harfbuzz=ON
	cmake --build . --parallel
	ninja install
	cd ../../

	echo "Building Qt SVG..."
	rm -fr "qtsvg-everywhere-src-$QT"
	tar xf "qtsvg-everywhere-src-$QT.tar.xz"
	cd "qtsvg-everywhere-src-$QT"
	mkdir build
	cd build
	"$INSTALLDIR/bin/qt-configure-module" .. -- -DCMAKE_PREFIX_PATH="$INSTALLDIR"
	cmake --build . --parallel
	ninja install
	cd ../../

	echo "Building Qt Image Formats..."
	rm -fr "qtimageformats-everywhere-src-$QT"
	tar xf "qtimageformats-everywhere-src-$QT.tar.xz"
	cd "qtimageformats-everywhere-src-$QT"
	mkdir build
	cd build
	"$INSTALLDIR/bin/qt-configure-module" .. -- -DCMAKE_PREFIX_PATH="$INSTALLDIR" -DFEATURE_system_webp=ON
	cmake --build . --parallel
	ninja install
	cd ../../

	echo "Building Qt Wayland..."
	rm -fr "qtwayland-everywhere-src-$QT"
	tar xf "qtwayland-everywhere-src-$QT.tar.xz"
	cd "qtwayland-everywhere-src-$QT"
	mkdir build
	cd build
	"$INSTALLDIR/bin/qt-configure-module" .. -- -DCMAKE_PREFIX_PATH="$INSTALLDIR"
	cmake --build . --parallel
	ninja install
	cd ../../

	echo "Installing Qt Tools..."
	rm -fr "qttools-everywhere-src-$QT"
	tar xf "qttools-everywhere-src-$QT.tar.xz"
	cd "qttools-everywhere-src-$QT"

	# Force disable clang scanning, it gets very confused.
	patch -u configure.cmake <<EOF
--- configure.cmake
+++ configure.cmake
@@ -14,12 +14,12 @@
 # Presumably because 6.0 ClangConfig.cmake files are not good enough?
 # In any case explicitly request a minimum version of 8.x for now, otherwise
 # building with CMake will fail at compilation time.
-qt_find_package(WrapLibClang 8 PROVIDED_TARGETS WrapLibClang::WrapLibClang)
+#qt_find_package(WrapLibClang 8 PROVIDED_TARGETS WrapLibClang::WrapLibClang)
 # special case end

-if(TARGET WrapLibClang::WrapLibClang)
-    set(TEST_libclang "ON" CACHE BOOL "Required libclang version found." FORCE)
-endif()
+#if(TARGET WrapLibClang::WrapLibClang)
+#    set(TEST_libclang "ON" CACHE BOOL "Required libclang version found." FORCE)
+#endif()



EOF

	mkdir build
	cd build
	"$INSTALLDIR/bin/qt-configure-module" .. -- -DCMAKE_PREFIX_PATH="$INSTALLDIR" -DFEATURE_assistant=OFF -DFEATURE_clang=OFF -DFEATURE_designer=ON -DFEATURE_kmap2qmap=OFF -DFEATURE_pixeltool=OFF -DFEATURE_pkg_config=OFF -DFEATURE_qev=OFF -DFEATURE_qtattributionsscanner=OFF -DFEATURE_qtdiag=OFF -DFEATURE_qtplugininfo=OFF
	cmake --build . --parallel
	ninja install
	cd ../../

	echo "Installing Qt Translations..."
	rm -fr "qttranslations-everywhere-src-$QT"
	tar xf "qttranslations-everywhere-src-$QT.tar.xz"
	cd "qttranslations-everywhere-src-$QT"
	mkdir build
	cd build
	"$INSTALLDIR/bin/qt-configure-module" .. -- -DCMAKE_PREFIX_PATH="$INSTALLDIR"
	cmake --build . --parallel
	ninja install
	cd ../../
fi

echo "Building shaderc..."
rm -fr "shaderc-$SHADERC"
tar xf "shaderc-$SHADERC.tar.gz"
cd "shaderc-$SHADERC"
cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="$INSTALLDIR" -DCMAKE_INSTALL_PREFIX="$INSTALLDIR" -DSHADERC_SKIP_TESTS=ON -DSHADERC_SKIP_EXAMPLES=ON -DSHADERC_SKIP_COPYRIGHT_CHECK=ON -B build -G Ninja
cmake --build build --parallel
ninja -C build install
cd ..

echo "Building SPIRV-Cross..."
cd SPIRV-Cross
rm -fr build
cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="$INSTALLDIR" -DCMAKE_INSTALL_PREFIX="$INSTALLDIR" -DSPIRV_CROSS_SHARED=ON -DSPIRV_CROSS_STATIC=OFF -DSPIRV_CROSS_CLI=OFF -DSPIRV_CROSS_ENABLE_TESTS=OFF -DSPIRV_CROSS_ENABLE_GLSL=ON -DSPIRV_CROSS_ENABLE_HLSL=OFF -DSPIRV_CROSS_ENABLE_MSL=OFF -DSPIRV_CROSS_ENABLE_CPP=OFF -DSPIRV_CROSS_ENABLE_REFLECT=OFF -DSPIRV_CROSS_ENABLE_C_API=ON -DSPIRV_CROSS_ENABLE_UTIL=ON -B build -G Ninja
cmake --build build --parallel
ninja -C build install
cd ..

echo "Building cpuinfo..."
rm -fr "cpuinfo-$CPUINFO"
tar xf "cpuinfo-$CPUINFO.tar.gz"
cd "cpuinfo-$CPUINFO"
cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="$INSTALLDIR" -DCMAKE_INSTALL_PREFIX="$INSTALLDIR" -DCPUINFO_LIBRARY_TYPE=shared -DCPUINFO_RUNTIME_TYPE=shared -DCPUINFO_LOG_LEVEL=error -DCPUINFO_LOG_TO_STDIO=ON -DCPUINFO_BUILD_TOOLS=OFF -DCPUINFO_BUILD_UNIT_TESTS=OFF -DCPUINFO_BUILD_MOCK_TESTS=OFF -DCPUINFO_BUILD_BENCHMARKS=OFF -DUSE_SYSTEM_LIBS=ON -B build -G Ninja
cmake --build build --parallel
ninja -C build install
cd ..

echo "Building discord-rpc..."
rm -fr "discord-rpc-$DISCORD_RPC"
tar xf "discord-rpc-$DISCORD_RPC.tar.gz"
cd "discord-rpc-$DISCORD_RPC"
cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="$INSTALLDIR" -DCMAKE_INSTALL_PREFIX="$INSTALLDIR" -DBUILD_SHARED_LIBS=ON -B build -G Ninja
cmake --build build --parallel
ninja -C build install
cd ..

echo "Building soundtouch..."
rm -fr "soundtouch-$SOUNDTOUCH"
tar xf "soundtouch-$SOUNDTOUCH.tar.gz"
cd "soundtouch-$SOUNDTOUCH"
cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH="$INSTALLDIR" -DCMAKE_INSTALL_PREFIX="$INSTALLDIR" -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON -B build -G Ninja
cmake --build build --parallel
ninja -C build install
cd ..

echo "Cleaning up..."
cd ..
rm -fr deps-build