#!/usr/bin/env bash
# Compila Aevilia (RPG de Game Boy Color de ISSOtm e equipe, Apache-2.0) do commit 5759e97 com o RGBDS
# 0.3.7, a versao que o INSTALL.md do autor recomenda (a 0.3.10 nao monta o jogo, a 0.3.6 tem um bug
# que quebra o mapa da intro). O repositorio traz o Makefile em modo de depuracao (DebugMode=1, que o
# proprio Makefile manda nao redistribuir); aqui a build e de producao (DebugMode=0, ROMVersion=1).
# Submodulo: DevSound (MIT) no commit bd181be. O player de efeitos sonoros FX Hammer (Aleksi Eeben, sem
# termos de redistribuicao publicados) fica de fora, trocado por stubs pelo patch
# Builds/aevilia/no-fxhammer.patch, e o SFXData.bin e esvaziado.
#
# O RGBDS precisa do Bison 3 para gerar o parser do rgbasm: o script compila o GNU Bison 3.8.2 e o
# RGBDS (so rgbasm, rgblink e rgbfix) em artifacts/tools/.
#
#   src/FredGames.Bundler/Builds/build-aevilia.sh
#
# Saida: artifacts/build/aevilia/aevilia.gbc

set -euo pipefail

BISON=3.8.2
BISON_SHA256=9bba0214ccf7f1079c5d59210045227bcf619519840ebfa80cd3849cff5a5bf2
RGBDS=0.3.7
RGBDS_SHA256=5ddd8b9d57e91c798f464e83fa723cdbab45376958a56a554fbfb3c417844bfc
COMMIT=5759e97089aa825e992317327cb850420728b93e
GAME_SHA256=9fbff588d7090433e24dd894e1198ad2f2d2ad4633dec7015472e6288818551f
DEVSOUND=bd181be5194a89d8ae6a5e590d9a81e2d3ca8aec
DEVSOUND_SHA256=88e9cc98f689f357c34a2858bbe02173ad37a37265e04503c5af5ed16946a93c
ROM_SHA256=3afbecdf2b641117b107ee13f31f6aefb1e616cb5772f9f472b422c97a7c9be6

here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
root="$(git -C "$here" rev-parse --show-toplevel 2>/dev/null || pwd)"
out="$root/artifacts/build/aevilia"
cache="$root/artifacts/build/cache"
bison="$root/artifacts/tools/bison-$BISON"
rgbds="$root/artifacts/tools/rgbds-$RGBDS"

mkdir -p "$cache"
fetch() { [ -f "$2" ] || curl -fsSL --retry 4 "$1" -o "$2"; echo "$3  $2" | shasum -a 256 -c -; }
fetch "https://ftp.gnu.org/gnu/bison/bison-$BISON.tar.xz" "$cache/bison-$BISON.tar.xz" "$BISON_SHA256"
fetch "https://github.com/gbdev/rgbds/archive/refs/tags/v$RGBDS.tar.gz" "$cache/rgbds-$RGBDS.tar.gz" "$RGBDS_SHA256"
fetch "https://github.com/ISSOtm/Aevilia-GB/archive/$COMMIT.tar.gz" "$cache/Aevilia-GB-$COMMIT.tar.gz" "$GAME_SHA256"
fetch "https://github.com/DevEd2/DevSound/archive/$DEVSOUND.tar.gz" "$cache/DevSound-$DEVSOUND.tar.gz" "$DEVSOUND_SHA256"

if [ ! -x "$bison/bin/bison" ]; then
  rm -rf "$bison" "$bison.src" && mkdir -p "$bison.src"
  tar -xJf "$cache/bison-$BISON.tar.xz" -C "$bison.src" --strip-components 1
  (cd "$bison.src" && ./configure --prefix="$bison" --disable-nls >/dev/null && make -j8 >/dev/null && make install >/dev/null)
  rm -rf "$bison.src"
fi

if [ ! -x "$rgbds/rgbasm" ] || [ ! -x "$rgbds/rgblink" ] || [ ! -x "$rgbds/rgbfix" ]; then
  rm -rf "$rgbds" && mkdir -p "$rgbds"
  tar -xzf "$cache/rgbds-$RGBDS.tar.gz" -C "$rgbds" --strip-components 1
  make -C "$rgbds" YACC="$bison/bin/bison" WARNFLAGS=-w rgbasm rgblink rgbfix >/dev/null 2>&1
fi

rm -rf "$out" && mkdir -p "$out/tree"
tar -xzf "$cache/Aevilia-GB-$COMMIT.tar.gz" -C "$out/tree" --strip-components 1
tar -xzf "$cache/DevSound-$DEVSOUND.tar.gz" -C "$out/tree/sound/DevSound" --strip-components 1
patch -s -p1 -d "$out/tree" < "$here/aevilia/no-fxhammer.patch"
: > "$out/tree/sound/SFXData.bin"   # o Makefile exige um sound/*.bin; fica vazio e nao e incluido
LC_ALL=C PATH="$rgbds:$PATH" make -C "$out/tree" bin/aevilia.gbc DebugMode=0 ROMVersion=1 >/dev/null
cp "$out/tree/bin/aevilia.gbc" "$out/"
echo "$ROM_SHA256  $out/aevilia.gbc" | shasum -a 256 -c -