#!/usr/bin/env bash
# Compila Race for the PS9 (homebrew de Game Boy Color de Joserichi, GB Compo 2025, GPL-3.0) do commit
# a48a5ed com o RGBDS 1.0.3. Mesmos passos do makefile do autor (rgbasm em cada .asm de src/ com
# -i inc -i bin, rgblink, rgbfix com as opcoes dele; os .bin de bin/ ja vem convertidos no repositorio),
# sem o tools/romusage (so imprime o uso da ROM). Ordem de ligacao: src/*.asm e depois src/*/*.asm, como
# o $(wildcard) do makefile. O RGBDS 1.0.3 e compilado em artifacts/tools/rgbds-1.0.3-full com o Bison
# 3.8.2 e a libpng 1.6.50 estatica que o build-gigant-golf.sh deixa em artifacts/tools/.
#
#   src/FredGames.Bundler/Builds/build-race-for-the-ps9.sh
#
# Saida: artifacts/build/race-for-the-ps9/PS9Race.gbc

set -euo pipefail
export LC_ALL=C

COMMIT=a48a5ed1fa5ce29b7a3ff66cc02e7f0aa6da4427
GAME_SHA256=faac0e9158e671076e325f968077cce7ec49c4a337de47e2549979e9467c3c89
RGBDS_SHA256=e79e51bdc0e53d8b52b5b9b58a5cbe15d6a380092da67dd625aeca29f6679660

here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
root="$(git -C "$here" rev-parse --show-toplevel 2>/dev/null || pwd)"
out="$root/artifacts/build/race-for-the-ps9"
cache="$root/artifacts/build/cache"
rgbds="$root/artifacts/tools/rgbds-1.0.3-full"
bison="$root/artifacts/tools/bison-3.8.2"
libpng="$root/artifacts/tools/libpng-1.6.50"

mkdir -p "$cache"
if [ ! -x "$rgbds/rgbgfx" ]; then
  src="$cache/rgbds-1.0.3.tar.gz"
  [ -f "$src" ] || curl -fsSL "https://github.com/gbdev/rgbds/archive/refs/tags/v1.0.3.tar.gz" -o "$src"
  echo "$RGBDS_SHA256  $src" | shasum -a 256 -c -
  rm -rf "$rgbds.src" && mkdir -p "$rgbds.src" "$rgbds"
  tar -xzf "$src" -C "$rgbds.src" --strip-components 1
  PATH="$bison/bin:$PATH" make -C "$rgbds.src" -j8 WARNFLAGS=-w \
    PNGCFLAGS="-I$libpng/include" PNGLDFLAGS="-L$libpng/lib" PNGLDLIBS="$libpng/lib/libpng16.a -lz" \
    rgbasm rgblink rgbfix rgbgfx >/dev/null
  cp "$rgbds.src/rgbasm" "$rgbds.src/rgblink" "$rgbds.src/rgbfix" "$rgbds.src/rgbgfx" "$rgbds/"
  rm -rf "$rgbds.src"
fi
tarball="$cache/race-for-the-ps9-a48a5ed.tar.gz"
[ -f "$tarball" ] || curl -fsSL "https://github.com/gbcompo25/Race-for-the-PS9/archive/$COMMIT.tar.gz" -o "$tarball"
echo "$GAME_SHA256  $tarball" | shasum -a 256 -c -

rm -rf "$out" && mkdir -p "$out/tree"
tar -xzf "$tarball" -C "$out/tree" --strip-components 1
cd "$out/tree"
objs=()
for s in $(ls src/*.asm | sort) $(ls src/*/*.asm | sort); do
  o="obj/${s#src/}.o"
  mkdir -p "$(dirname "$o")"
  "$rgbds/rgbasm" -w -i inc -i bin -o "$o" "$s"
  objs+=("$o")
done
"$rgbds/rgblink" -o PS9Race.gbc "${objs[@]}"
"$rgbds/rgbfix" -v -c -i PS9 -t PS9Race -j -k 'J*' -m "ROM ONLY" -r 0 -l 0x33 -p 0xFF PS9Race.gbc
cp PS9Race.gbc "$out/"
shasum -a 256 "$out/PS9Race.gbc"