# Copyright 1999-2017 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

EAPI=6

inherit eutils cmake-utils git-r3

DESCRIPTION="A PSP emulator written in C++."
HOMEPAGE="https://www.ppsspp.org/"
EGIT_REPO_URI="https://github.com/hrydgard/${PN}.git"

LICENSE="GPL-2"
SLOT="0"
IUSE="+qt5 sdl +egl +ffmpeg headless libav +system-ffmpeg"
REQUIRED_USE="
	!headless? ( || ( qt5 sdl ) )
	?? ( qt5 sdl )
"
EGIT_SUBMODULES=( '*' )

RDEPEND="sys-libs/zlib
	ffmpeg? (
	    system-ffmpeg? (
			!libav? ( media-video/ffmpeg:= )
			libav? ( media-video/libav:= )
	    )
	)
	sdl? (
		media-libs/libsdl
		media-libs/libsdl2
	)
	qt5? (
		dev-db/sqlite
		dev-qt/assistant:5
		dev-qt/qtcore:5
		dev-qt/qtdeclarative:5
		dev-qt/qtgui:5
		dev-qt/qtmultimedia:5
		dev-qt/qtopengl:5
		dev-qt/qtsvg:5
		dev-qt/qtwebkit:5
		dev-qt/qtwidgets:5
	)
	egl? ( media-libs/mesa[egl] )
	"

DEPEND="${RDEPEND}"

src_unpack() {
	use ffmpeg && use system-ffmpeg && EGIT_SUBMODULES+=( '-ffmpeg' )
	git-r3_src_unpack
}

src_prepare() {
	# https://github.com/hrydgard/ppsspp/blob/150619c5a341f372266bec86fd874ac5a1343a43/UI/NativeApp.cpp#L318
	# patch ppsspp to use /usr/share instead of working dir to find the assets
	sed -i 's|VFSRegister("", new AssetsAssetReader());|VFSRegister("", new DirectoryAssetReader("/usr/share/ppsspp/assets/"));|g' UI/NativeApp.cpp || die "Patching qt assets path failed"

	sed -i -e "s#-O3#-O2#g;" "${S}"/CMakeLists.txt || die
	if ! use system-ffmpeg; then
		sed -i -e "s#-O3#-O2#g;" "${S}"/ffmpeg/linux_*.sh || die
	fi
	cmake-utils_src_prepare
}

src_configure() {
	local mycmakeargs=(
		-DUSING_QT_UI=$(usex qt5)
		-DUSE_FFMPEG=$(usex ffmpeg)
		-DUSE_SYSTEM_FFMPEG=$(usex system-ffmpeg)
		-DUSING_EGL=$(usex egl)
		-DHEADLESS=$(usex headless)
		)
	cmake-utils_src_configure
}

src_install() {
	use headless && dobin "${BUILD_DIR}/PPSSPPHeadless"
	insinto /usr/share/"${PN}"
	doins -r "${BUILD_DIR}/assets"
	if use qt5 || use sdl ; then
		dobin "${BUILD_DIR}/PPSSPP$(usex qt5 Qt SDL)"
		local i
		for i in 16 24 32 48 64 96 128 256 512 ; do
			doicon -s ${i} "icons/hicolor/${i}x${i}/apps/${PN}.png"
		done
		make_desktop_entry "PPSSPP$(usex qt5 Qt SDL)" "PPSSPP ($(usex qt5 Qt SDL))" "${PN}" "Game"
	fi
}

pkg_postinst() {
	if use system-ffmpeg; then
		ewarn "system-ffmpeg USE flag is enabled, some bugs might arise due to it."
		ewarn "See https://github.com/hrydgard/ppsspp/issues/9026 for more informations."
	fi
}