#!/usr/bin/env bash

# This file is part of The RetroPie Project
#
# The RetroPie Project is the legal property of its developers, whose names are
# too numerous to list here. Please refer to the COPYRIGHT.md file distributed with this source.
#
# See the LICENSE.md file at the top-level directory of this distribution and
# at https://raw.githubusercontent.com/RetroPie/RetroPie-Setup/master/LICENSE.md
#

rp_module_id="sdl2"
rp_module_desc="SDL (Simple DirectMedia Layer) v2.x"
rp_module_licence="ZLIB https://raw.githubusercontent.com/libsdl-org/SDL/main/LICENSE.txt"
rp_module_section="depends"
rp_module_flags=""

function get_ver_sdl2() {
    echo "2.0.20"
}

function get_pkg_ver_sdl2() {
    local ver="$(get_ver_sdl2)+1"
    isPlatform "rpi" && ver+="rpi"
    isPlatform "mali" && ver+="mali"
    echo "$ver"
}

function get_arch_sdl2() {
    echo "$(dpkg --print-architecture)"
}

function _list_depends_sdl2() {
    # Dependencies from the debian package control + additional dependencies for the pi (some are excluded like dpkg-dev as they are
    # already covered by the build-essential package retropie relies on.
    local depends=(libasound2-dev libudev-dev libibus-1.0-dev libdbus-1-dev fcitx-libs-dev libsndio-dev libsamplerate0-dev)
    # these were removed by a PR for vero4k support (cannot test). Needed though at least for for RPI and X11
    ! isPlatform "vero4k" && depends+=(libx11-dev libxcursor-dev libxext-dev libxi-dev libxinerama-dev libxkbcommon-dev libxrandr-dev libxss-dev libxt-dev libxv-dev libxxf86vm-dev libgl1-mesa-dev)
    isPlatform "gles" || isPlatform "gl" && depends+=(libegl1-mesa-dev libgles2-mesa-dev)
    isPlatform "gl" || isPlatform "rpi" && depends+=(libgl1-mesa-dev libglu1-mesa-dev)
    isPlatform "kms" || isPlatform "rpi" && depends+=(libdrm-dev libgbm-dev)
    isPlatform "x11" && depends+=(libpulse-dev libwayland-dev)

    echo "${depends[@]}"
}

function depends_sdl2() {
    # install additional packages that are needed, but may be unsuitable as debian package dependencies due to distribution oddities
    local depends=(devscripts debhelper dh-autoreconf)

    isPlatform "mali" && depends+=(mali-fbdev)
    isPlatform "rpi" && depends+=(libraspberrypi-dev)
    isPlatform "vero4k" && depends+=(vero3-userland-dev-osmc)

    getDepends $(_list_depends_sdl2) "${depends[@]}"
}

function sources_sdl2() {
    local ver="$(get_ver_sdl2)"
    local pkg_ver="$(get_pkg_ver_sdl2)"
    local branch="retropie-${ver}"

    gitPullOrClone "$md_build/$pkg_ver" https://github.com/RetroPie/SDL.git "$branch"
    cd "$pkg_ver"
    DEBEMAIL="Jools Wills <buzz@exotica.org.uk>" dch -v "$pkg_ver" "SDL $ver configured for the $__platform"
}

function build_sdl2() {
    local conf_flags=()
    local conf_depends=( $(_list_depends_sdl2) )

    cd "$(get_pkg_ver_sdl2)"

    if isPlatform "vero4k"; then
        # remove harmful (mesa) and un-needed (X11) dependencies from debian package control
        sed -i '/^\s*lib.*x\|mesa/ d' ./debian/control
        # disable vulkan and X11 video support
        conf_flags+=("--disable-video-x11")
    fi
    ! isPlatform "x11" && conf_flags+=("--disable-video-vulkan")
    isPlatform "mali" && conf_flags+=("--enable-video-mali" "--disable-video-opengl")
    isPlatform "rpi" && conf_flags+=("--enable-video-rpi")
    isPlatform "kms" || isPlatform "rpi" && conf_flags+=("--enable-video-kmsdrm")

    # format debian package dependencies into comma-separated list
    conf_depends=( "${conf_depends[@]/%/,}" )

    sed -i 's/libgl1-mesa-dev,/libgl1-mesa-dev, '"${conf_depends[*]}"'/' ./debian/control
    sed -i 's/confflags =/confflags = '"${conf_flags[*]}"' \\\n/' ./debian/rules

    if isPlatform "rpi" && [[ -d "/opt/vc/include" ]]; then
        # move proprietary videocore headers
        sed -i -e 's/\"EGL/\"brcmEGL/g' -e 's/\"GLES/\"brcmGLES/g' ./src/video/raspberry/SDL_rpivideo.h
        sed -i -e 's#<EGL/eglplatform#<brcmEGL/eglplatform#g' configure
        mv /opt/vc/include/EGL /opt/vc/include/brcmEGL
        mv /opt/vc/include/GLES /opt/vc/include/brcmGLES
        mv /opt/vc/include/GLES2 /opt/vc/include/brcmGLES2
    fi

    # using the videocore pkgconfig will cause unwanted linkage, so disable it!
    PKG_CONFIG_PATH= dpkg-buildpackage -b

    if isPlatform "rpi" && [[ -d "/opt/vc/include" ]]; then
        # restore proprietary headers
        mv /opt/vc/include/brcmEGL /opt/vc/include/EGL
        mv /opt/vc/include/brcmGLES /opt/vc/include/GLES
        mv /opt/vc/include/brcmGLES2 /opt/vc/include/GLES2
    fi

    md_ret_require="$md_build/libsdl2-dev_$(get_pkg_ver_sdl2)_$(get_arch_sdl2).deb"
    local dest="$__tmpdir/archives/$__binary_path"
    mkdir -p "$dest"

    local file
    for file in ../*.deb; do
        if gpg --list-secret-keys "$__gpg_signing_key" &>/dev/null; then
            signFile "$file" || return 1
            cp "${file}.asc" "$dest/"
        fi
        cp ../*.deb "$dest/"
    done
}

function remove_old_sdl2() {
    # remove our old libsdl2 packages
    hasPackage libsdl2 && dpkg --remove libsdl2 libsdl2-dev
}

function install_sdl2() {
    remove_old_sdl2
    # if the packages don't install completely due to missing dependencies the apt-get -y -f install will correct it
    if ! dpkg -i libsdl2-2.0-0_$(get_pkg_ver_sdl2)_$(get_arch_sdl2).deb libsdl2-dev_$(get_pkg_ver_sdl2)_$(get_arch_sdl2).deb; then
        apt-get -y -f --no-install-recommends install
    fi
    echo "libsdl2-dev hold" | dpkg --set-selections
}

function __binary_url_sdl2() {
    rp_hasBinaries && echo "$__binary_url/libsdl2-dev_$(get_pkg_ver_sdl2)_armhf.deb"
}

function install_bin_sdl2() {
    local tmp="$(mktemp -d)"
    pushd "$tmp" >/dev/null
    local ret=1
    if downloadAndVerify "$__binary_url/libsdl2-dev_$(get_pkg_ver_sdl2)_armhf.deb" && \
       downloadAndVerify "$__binary_url/libsdl2-2.0-0_$(get_pkg_ver_sdl2)_armhf.deb"; then
        install_sdl2
        ret=0
    fi
    popd >/dev/null
    rm -rf "$tmp"
    return "$ret"
}

function revert_sdl2() {
    aptUpdate
    local packaged="$(apt-cache madison libsdl2-dev | cut -d" " -f3 | head -n1)"
    if ! aptInstall --allow-downgrades --allow-change-held-packages libsdl2-2.0-0="$packaged" libsdl2-dev="$packaged"; then
        md_ret_errors+=("Failed to revert to OS packaged sdl2 versions")
    fi
}

function remove_sdl2() {
    apt-get remove -y --allow-change-held-packages libsdl2-dev libsdl2-2.0-0
    apt-get autoremove -y
}