# Funcoes comuns dos scripts Builds/build-<jogo>.sh dos jogos de Mega Drive feitos com o SGDK (use com "." no inicio).
# O SGDK (MIT) vem do tarball do commit pinado; o GCC m68k-elf de Builds/sgdk/install-toolchain.sh; as ferramentas
# nativas que o SGDK so traz em .exe (sjasm, bintos) sao compiladas aqui do fonte que vem no proprio SGDK; o rescomp
# e o sizebnd (Java) rodam no JDK 17 de artifacts/tools/.
#
#   sgdk_prepare <commit completo> <sha256 do tarball>   # deixa o SGDK em $SGDK, com lib/libmd.a recompilada
#   sgdk_make <pasta do projeto>                         # make -f makefile.gen release na pasta (gera out/rom.bin)
set -euo pipefail

sgdk_here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
sgdk_root="$(git -C "$sgdk_here" rev-parse --show-toplevel 2>/dev/null || (cd "$sgdk_here/../../../.." && pwd))"
SGDK_GCC="$sgdk_root/artifacts/tools/m68k-elf-gcc-14.2.0/bin"
SGDK_JAVA_HOME="$sgdk_root/artifacts/tools/jdk-jdk-17.0.21+9/Contents/Home"

sgdk_prepare() {
  local commit="$1" sha="$2" short="${1:0:7}"
  [ -x "$SGDK_GCC/m68k-elf-gcc" ] || "$sgdk_here/install-toolchain.sh"
  local cache="$sgdk_root/artifacts/build/sgdk/cache" tgz
  mkdir -p "$cache"
  tgz="$cache/SGDK-$short.tar.gz"
  [ -f "$tgz" ] || curl -fsSL "https://codeload.github.com/Stephane-D/SGDK/tar.gz/$commit" -o "$tgz"
  echo "$sha  $tgz" | shasum -a 256 -c - >/dev/null
  SGDK_TARBALL="$tgz"
  SGDK="$sgdk_root/artifacts/build/sgdk/sgdk-$short"
  SGDK_TOOLS="$sgdk_root/artifacts/tools/sgdk-$short-tools"
  if [ ! -f "$SGDK/.fredgames-ok" ]; then
    rm -rf "$SGDK"; mkdir -p "$SGDK"
    tar -xzf "$tgz" -C "$SGDK" --strip-components 1
    rm -f "$SGDK/lib/libmd.a" "$SGDK/lib/libmd_debug.a"
    mkdir -p "$SGDK_TOOLS"
    cc -O2 -o "$SGDK_TOOLS/bintos" "$SGDK/tools/bintos/src/bintos.c"
    c++ -O2 -w -DMAX_PATH=MAXPATHLEN -include sys/param.h -o "$SGDK_TOOLS/sjasm" "$SGDK"/tools/sjasm/src/*.cpp
    ( cd "$SGDK" && sgdk_path make -f makelib.gen release ) >"$SGDK/lib-build.log" 2>&1 \
      || { tail -20 "$SGDK/lib-build.log" >&2; echo "libmd falhou" >&2; exit 1; }
    touch "$SGDK/.fredgames-ok"
  fi
}

sgdk_path() { PATH="$SGDK_TOOLS:$SGDK_GCC:$SGDK_JAVA_HOME/bin:$PATH" JAVA_HOME="$SGDK_JAVA_HOME" "$@"; }

sgdk_make() {
  ( cd "$1" && sgdk_path make -f "$SGDK/makefile.gen" GDK="$SGDK" release )
}