# Copyright 1999-2023 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=8

PYTHON_COMPAT=( python3_{9..11} )

inherit meson distutils-r1 multilib-minimal flag-o-matic git-r3

DESCRIPTION="A Vulkan and OpenGL overlay for monitoring FPS, temperatures, CPU/GPU load and more."
HOMEPAGE="https://github.com/flightlessmango/MangoHud"

EGIT_REPO_URI="https://github.com/flightlessmango/MangoHud.git"
SRC_URI="
    https://github.com/ocornut/imgui/archive/v1.81.tar.gz -> imgui-1.81.tar.gz
    https://wrapdb.mesonbuild.com/v1/projects/imgui/1.81/1/get_zip -> imgui_wrap-1.81.zip
    https://github.com/nlohmann/json/releases/download/v3.10.5/include.zip -> nlohmann_json-3.10.5.zip
    https://github.com/gabime/spdlog/archive/v1.8.5.tar.gz -> spdlog-1.8.5.tar.gz
    https://wrapdb.mesonbuild.com/v2/spdlog_1.8.5-1/get_patch -> spdlog-1.8.5-1-wrap.zip
    https://github.com/KhronosGroup/Vulkan-Headers/archive/v1.2.158.tar.gz -> vulkan-headers-1.2.158.tar.gz
    https://wrapdb.mesonbuild.com/v2/vulkan-headers_1.2.158-2/get_patch -> vulkan-headers-1.2.158-2-wrap.zip
"
EGIT_COMMIT="v${PV}"
KEYWORDS="-* ~amd64 ~x86"

LICENSE="MIT"
SLOT="0"
IUSE="+dbus glvnd +X xnvctrl wayland -video_cards_nvidia +video_cards_amdgpu"
REQUIRED_USE="xnvctrl? ( video_cards_nvidia )"

BDEPEND="
    !>=dev-util/vulkan-headers-1.3.241
    dev-python/mako[${PYTHON_USEDEP}]
    dev-util/ninja
"
DEPEND="
    !games-util/mangohud
    media-libs/glfw
    dev-util/glslang
    >=dev-util/vulkan-headers-1.2
    media-libs/vulkan-loader[${MULTILIB_USEDEP}]
    video_cards_amdgpu? ( x11-libs/libdrm[video_cards_amdgpu] )
    glvnd? ( media-libs/libglvnd[${MULTILIB_USEDEP}] )
    dbus? ( sys-apps/dbus[${MULTILIB_USEDEP}] )
    X? ( x11-libs/libX11[${MULTILIB_USEDEP}] )
    video_cards_nvidia? (
        x11-drivers/nvidia-drivers[${MULTILIB_USEDEP}]
        xnvctrl? ( x11-drivers/nvidia-drivers[static-libs] )
    )
    wayland? ( dev-libs/wayland[${MULTILIB_USEDEP}] )
"

RDEPEND="${DEPEND}"

src_unpack() {
    git-r3_src_unpack
    default

    mv imgui-1.81 ${S}/subprojects
    mv spdlog-1.8.5 ${S}/subprojects
    mv Vulkan-Headers-1.2.158 ${S}/subprojects

    mkdir ${S}/subprojects/nlohmann_json-3.10.5
    mv {single_,}include LICENSE.MIT meson.build ${S}/subprojects/nlohmann_json-3.10.5
}
multilib_src_configure() {
    local emesonargs=(
        -Dappend_libdir_mangohud=false
        -Duse_system_vulkan=enabled
        -Dinclude_doc=false
        $(meson_feature video_cards_nvidia with_nvml)
        $(meson_feature xnvctrl with_xnvctrl)
        $(meson_feature X with_x11)
        $(meson_feature wayland with_wayland)
        $(meson_feature dbus with_dbus)
    )
    meson_src_configure
}

multilib_src_compile() {
    meson_src_compile
}

multilib_src_install() {
    meson_src_install
}

multilib_src_install_all() {
    dodoc "${S}/data/MangoHud.conf"

    einstalldocs
}

pkg_postinst() {
    if ! use xnvctrl; then
        einfo ""
        einfo "If mangohud can't get GPU load, or other GPU information,"
        einfo "and you have an older Nvidia device."
        einfo ""
        einfo "Try enabling the 'xnvctrl' useflag."
        einfo ""
    fi
}