# Copyright 2014-2016 Alexander Scheuermann <alex+exherbo@tnix.de>
# Distributed under the terms of the GNU General Public License v2

MY_PNV="${PN}_v${PV}-source"

SUMMARY="higan is a Nintendo multi-system emulator."
DESCRIPTION="Emulator aiming for perfect accuracy on the systems Famicom, Super Famicom, Game Boy,
Game Boy Color, Game Boy Advance and the subsystems Super Game Boy, BS-X Satellaview and Sufami
Turbo. OpenGL 3.2 is required."

HOMEPAGE="http://byuu.org/emulation/${PN}/"
DOWNLOADS="http://download.byuu.org/${MY_PNV}.7z"
LICENCES="GPL-3"
SLOT="0"
PLATFORMS="~amd64"
MYOPTIONS="
    opengl
    openmp
    sdl
    xv
    (
        alsa
        ao
        openal
        oss
        pulseaudio
    ) [[
        number-selected = at-least-one
    ]]
    (
        gtk2
        qt4
    ) [[
        number-selected = exactly-one
    ]]
    ( providers: eudev systemd ) [[ number-selected = exactly-one ]]
"

DEPENDENCIES="
    build:
        app-arch/7zip
        virtual/pkg-config
    build+run:
        x11-libs/libX11
        x11-libs/libXext
        alsa? ( sys-sound/alsa-lib )
        ao? ( media-libs/libao )
        gtk2? (
            dev-libs/at-spi2-core[>=2.52.0]
            dev-libs/glib
            gnome-desktop/gtksourceview:2
            media-libs/fontconfig
            media-libs/freetype:2
            x11-libs/cairo
            x11-libs/gdk-pixbuf:2.0
            x11-libs/gtk+:2
            x11-libs/pango
        )
        openal? ( media-libs/openal )
        opengl? ( x11-dri/mesa[X] )
        openmp? ( sys-libs/libgomp:= )
        oss? ( sys-sound/oss )
        pulseaudio? ( media-sound/pulseaudio )
        sdl? ( media-libs/SDL )
        qt4? ( x11-libs/qt:4 )
        xv? ( x11-libs/libXv )
        providers:eudev? ( sys-apps/eudev )
        providers:systemd? ( sys-apps/systemd )
"

WORK="${WORKBASE}/${MY_PNV}"

DEFAULT_SRC_PREPARE_PATCHES=(
    "${FILES}/hiro_GNUmakefile.patch"
)

RESTRICT=test

higan_disable() {
    edo sed -i \
        -e "s/${1}//" \
        "${WORK}/higan/target-tomoko/GNUmakefile"
}

src_prepare() {
    # use system flags
    edo sed -i \
        -e "/flags += -I. -I.. -O3/ s/-O3/${CXXFLAGS}/" \
        -e "/  flags += -march=native/ s/-march=native //" \
        -e "/  link += -fopenmp/ s/$/ ${LDFLAGS}/" \
        higan/GNUmakefile
    edo sed -i \
        -e "/flags += -I.. -O3/ s/-O3/${CXXFLAGS}/" \
        icarus/GNUmakefile
    # set pkg-config
    edo sed -i \
        -e "s/pkg-config/${PKG_CONFIG}/" \
        hiro/GNUmakefile

    # optionally disable openmp
    optionq openmp || {
        edo sed -i \
            -e "s/-fopenmp//" \
            higan/GNUmakefile
    }

    # apply options
    # audio
    optionq alsa || higan_disable audio.alsa
    optionq ao || higan_disable audio.ao
    optionq openal || higan_disable audio.openal
    optionq oss || higan_disable audio.oss
    optionq pulseaudio || {
        higan_disable audio.pulseaudio
        higan_disable audio.pulseaudiosimple
    }
    # video
    optionq opengl || higan_disable video.glx
    optionq sdl || higan_disable video.sdl
    optionq xv || higan_disable video.xv
    # input
    optionq sdl || higan_disable input.sdl
}

src_compile() {
    # main program
    edo pushd higan
    emake \
        platform="linux" \
        compiler="${CXX}" \
        hiro="$(option qt4 qt gtk)"
    edo popd

    # library management
    edo pushd icarus
    emake \
        platform="linux" \
        compiler="${CXX}" \
        hiro="$(option qt4 qt gtk)"
    edo popd
}

src_install() {
    dobin higan/out/higan
    dobin icarus/out/icarus

    insinto /usr/share/pixmaps
    doins higan/data/higan.png

    insinto /usr/share/applications
    doins higan/data/higan.desktop

    insinto /usr/share/higan
    doins -r higan/systems/*
}

pkg_postinst() {
    default

    # system data library needs manual user copy
    ewarn "${PN} does not know its system wide resources and requires a manual copy per user."
    ewarn "Please run: cp -r /usr/share/${PN} ~/.local/share/"
}