#!/usr/bin/env bash
# Gera o box-smasher.love do Box Smasher (rollerozxa, GPL-3.0-or-later) a partir do commit 671f600 do
# repositorio, com dois patches nossos (publicados junto do fonte):
#   box-smasher/no-external-links.patch    tira o botao que abre o site do autor (openURL);
#   box-smasher/save-without-thread.patch  grava o savegame direto, sem love.thread (o love.js sem
#                                          threads nao roda threads e o save nunca seria gravado).
# O .love e um zip determinístico (ordem alfabetica, data fixa, deflate) sem .github/, .vscode/,
# packaging/ e README.md (mesmo conteudo do packaging/make-game.sh do autor, mais LICENSE).
#
#   src/FredGames.Bundler/Builds/build-box-smasher.sh
#
# Saida: artifacts/build/box-smasher-671f600/box-smasher.love

set -euo pipefail

COMMIT=671f60017d8dbe261bdd430d3ee42f6f72b2c698
SHA256=c8c3b78b81e72a16e1eed9e4a10ea53420f87cd8ac21b815505d4ee775fdac9b

here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
root="$(git -C "$here" rev-parse --show-toplevel 2>/dev/null || pwd)"
out="$root/artifacts/build/box-smasher-671f600"
cache="$root/artifacts/build/cache"

mkdir -p "$cache"
tarball="$cache/boxsmasher-671f600.tar.gz"
[ -f "$tarball" ] || curl -fsSL "https://github.com/rollerozxa/boxsmasher/archive/$COMMIT.tar.gz" -o "$tarball"
echo "$SHA256  $tarball" | shasum -a 256 -c -

rm -rf "$out"
mkdir -p "$out/tree"
tar -xzf "$tarball" -C "$out/tree" --strip-components 1
patch -d "$out/tree" -p1 < "$here/box-smasher/no-external-links.patch"
patch -d "$out/tree" -p1 < "$here/box-smasher/save-without-thread.patch"
rm "$out/tree/savegame/save_thread.lua"

python3 -I - "$out/tree" "$out/box-smasher.love" <<'PY'
import os, sys, zipfile
src, dest = sys.argv[1:]
skip = ('.github', '.vscode', 'packaging')
names = []
for base, dirs, files in os.walk(src):
    dirs[:] = [d for d in dirs if not (base == src and d in skip)]
    for f in files:
        rel = os.path.relpath(os.path.join(base, f), src).replace(os.sep, '/')
        if rel in ('README.md', '.gitignore'):
            continue
        names.append(rel)
with zipfile.ZipFile(dest, 'w', zipfile.ZIP_DEFLATED, compresslevel=9) as z:
    for rel in sorted(names):
        info = zipfile.ZipInfo(rel, (1980, 1, 1, 0, 0, 0))
        info.compress_type = zipfile.ZIP_DEFLATED
        info.external_attr = 0o644 << 16
        info.create_system = 3
        with open(os.path.join(src, rel), 'rb') as fh:
            z.writestr(info, fh.read(), compresslevel=9)
PY
shasum -a 256 "$out/box-smasher.love"