#!/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="ppsspp"
rp_module_desc="PlayStation Portable emulator PPSSPP"
rp_module_help="ROM Extensions: .iso .pbp .cso\n\nCopy your PlayStation Portable roms to $romdir/psp"
rp_module_licence="GPL2 https://raw.githubusercontent.com/hrydgard/ppsspp/master/LICENSE.TXT"
rp_module_section="opt"
rp_module_flags=""

function depends_ppsspp() {
    local depends=(cmake libsdl2-dev libzip-dev)
    isPlatform "rpi" && depends+=(libraspberrypi-dev)
    getDepends "${depends[@]}"
}

function sources_ppsspp() {
    gitPullOrClone "$md_build/ppsspp" https://github.com/hrydgard/ppsspp.git
    cd ppsspp

    # remove the lines that trigger the ffmpeg build script functions - we will just use the variables from it
    sed -i "/^build_ARMv6$/,$ d" ffmpeg/linux_arm.sh

    # remove -U__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 as we handle this ourselves if armv7 on Raspbian
    sed -i "/^  -U__GCC_HAVE_SYNC_COMPARE_AND_SWAP_2/d" cmake/Toolchains/raspberry.armv7.cmake
    # set ARCH_FLAGS to our own CXXFLAGS (which includes GCC_HAVE_SYNC_COMPARE_AND_SWAP_2 if needed)
    sed -i "s/^set(ARCH_FLAGS.*/set(ARCH_FLAGS \"$CXXFLAGS\")/" cmake/Toolchains/raspberry.armv7.cmake

    if hasPackage cmake 3.6 lt; then
        cd ..
        mkdir -p cmake
        downloadAndExtract "$__archive_url/cmake-3.6.2.tar.gz" "$md_build/cmake" 1
    fi
}

function build_ffmpeg_ppsspp() {
    cd "$1"
    local arch
    if isPlatform "arm"; then
        if isPlatform "armv6"; then
            arch="arm"
        else
            arch="armv7"
        fi
    elif isPlatform "x86"; then
        if isPlatform "x86_64"; then
            arch="x86_64";
        else
            arch="x86";
        fi
    elif isPlatform "aarch64"; then
        arch="arm64"
    fi
    local MODULES
    local VIDEO_DECODERS
    local AUDIO_DECODERS
    local VIDEO_ENCODERS
    local AUDIO_ENCODERS
    local DEMUXERS
    local MUXERS
    local PARSERS
    local GENERAL
    local OPTS # used by older lr-ppsspp fork
    # get the ffmpeg configure variables from the ppsspp ffmpeg distributed script
    source linux_arm.sh
    # linux_arm.sh has set -e which we need to switch off
    set +e
    ./configure \
        --prefix="./linux/$arch" \
        --extra-cflags="-fasm -Wno-psabi -fno-short-enums -fno-strict-aliasing -finline-limit=300" \
        --disable-shared \
        --enable-static \
        --enable-zlib \
        --enable-pic \
        --disable-everything \
        ${MODULES} \
        ${VIDEO_DECODERS} \
        ${AUDIO_DECODERS} \
        ${VIDEO_ENCODERS} \
        ${AUDIO_ENCODERS} \
        ${DEMUXERS} \
        ${MUXERS} \
        ${PARSERS}
    make clean
    make install
}

function build_cmake_ppsspp() {
    cd "$md_build/cmake"
    ./bootstrap
    make
}

function build_ppsspp() {
    local cmake="cmake"
    if hasPackage cmake 3.6 lt; then
        build_cmake_ppsspp
        cmake="$md_build/cmake/bin/cmake"
    fi

    # build ffmpeg
    build_ffmpeg_ppsspp "$md_build/ppsspp/ffmpeg"

    # build ppsspp
    cd "$md_build/ppsspp"
    rm -rf CMakeCache.txt CMakeFiles
    local params=()
    if isPlatform "rpi"; then
        if isPlatform "armv6"; then
            params+=(-DCMAKE_TOOLCHAIN_FILE=cmake/Toolchains/raspberry.armv6.cmake)
        else
            params+=(-DCMAKE_TOOLCHAIN_FILE=cmake/Toolchains/raspberry.armv7.cmake)
        fi
    elif isPlatform "mali"; then
        params+=(-DUSING_GLES2=ON -DUSING_FBDEV=ON)
    fi
    "$cmake" "${params[@]}" .
    make clean
    make

    md_ret_require="$md_build/ppsspp/PPSSPPSDL"
}

function install_ppsspp() {
    md_ret_files=(
        'ppsspp/assets'
        'ppsspp/PPSSPPSDL'
    )
}

function configure_ppsspp() {
    mkRomDir "psp"

    mkUserDir "$home/.config"
    moveConfigDir "$home/.config/ppsspp" "$md_conf_root/psp"
    mkUserDir "$md_conf_root/psp/PSP"
    ln -snf "$romdir/psp" "$md_conf_root/psp/PSP/GAME"

    addEmulator 0 "$md_id" "psp" "$md_inst/PPSSPPSDL %ROM%"
    addSystem "psp"
}