# shellcheck shell=bash
# Part of JoeyLib, Copyright (c) 2026 Scott Duensing, under the MIT License.
# See LICENSE.md for license information.
# SPDX-License-Identifier: MIT
#
# PPSSPP 1.20.4 with JoeyLib's patch (installer/patches/ppsspp): the PSP
# emulator the psp gates and joey-run run programs under. Only its headless
# test runner, PPSSPPHeadless, is built (no window, no sound card), from the
# release's source tarball, which carries its submodules, into
# toolchains/opt/ppsspp. ~5 minutes.

compDescription="emulator: PPSSPP 1.20.4 headless + JoeyLib patch (PSP)"
compGroups="emulator:psp"
compRequires="host"
compHostDeps="build-tools cmake python3 patch xz sdl2-dev gl-dev png-dev zlib-dev"
compUrl="https://github.com/hrydgard/ppsspp/releases/download/v1.20.4/ppsspp-1.20.4.tar.xz"
compSha256="4de21db3105d9d81a465a8a7e78c68ee3c0e0bf6597d1c1d530f7555f3ad8b31"
patchDir="$JOEY_PATCHES/ppsspp"
# Editing a patch rebuilds PPSSPP, so the patches are part of the pin.
compPin="$compSha256 $(cat "$patchDir"/*.patch | sha256sum | cut -d' ' -f1)"


compInstall() {
    local src
    local archive
    local p
    src="$(freshBuildDir "$compId")"
    archive="$(fetchFile "$compUrl" "$compSha256")"
    extractArchive "$archive" "$src" 1
    for p in "$patchDir"/*.patch; do
        info "applying $(basename "$p")"
        patch -d "$src" -p1 -s -F0 --no-backup-if-mismatch < "$p"
    done
    # No FFmpeg (the tarball has no prebuilt one; JoeyLib programs play no
    # PSP video), no GLU headers (GLEW_NO_GLU), and no ccache, which would
    # write to the home directory.
    cmake -S "$src" -B "$src/build" \
        -DCMAKE_BUILD_TYPE=Release \
        -DHEADLESS=ON \
        -DUNITTEST=OFF \
        -DUSING_QT_UI=OFF \
        -DUSE_CCACHE=OFF \
        -DUSE_DISCORD=OFF \
        -DUSE_FFMPEG=OFF \
        -DUSE_MINIUPNPC=OFF \
        -DCMAKE_C_FLAGS=-DGLEW_NO_GLU \
        -DCMAKE_CXX_FLAGS=-DGLEW_NO_GLU
    cmake --build "$src/build" --target PPSSPPHeadless -j"$JOEY_JOBS"
    rm -rf "$compDir"
    install -D -m 755 "$src/build/PPSSPPHeadless" "$compDir/bin/PPSSPPHeadless"
    dropBuildDir "$compId"
}


compInstalled() {
    [ -x "$compDir/bin/PPSSPPHeadless" ]
}


# The usage text lists the patch's options; HOME is a scratch folder, as
# PPSSPP keeps its memory stick there.
compVerify() {
    local tmp
    local usage
    tmp="$(mktemp -d)"
    usage="$(HOME="$tmp" "$compDir/bin/PPSSPPHeadless" --help 2>&1 || true)"
    rm -rf "$tmp"
    [[ "$usage" == *"--strict-mem"* && "$usage" == *"--snapshot=FILE"* && "$usage" == *"--dump-audio"* && "$usage" == *"--input=FILE"* ]] && verifyLinked "$compDir/bin"
}


compEnv() {
    envVar PPSSPP_HEADLESS "$compDir/bin/PPSSPPHeadless"
}