#!/usr/bin/env bash
# Gera o spamality.love do Spamality! (jogo de tiro de arena de liquidev/iLiquid para a Open Jam 2018: codigo ISC no
# cabecalho e no README, LICENSE do repositorio em MIT; arte, sons e a fonte geompixel do proprio autor, CC BY 4.0)
# a partir do commit b787841 do repositorio liquidev/spamality (antes liquid600pgm/spamality), sem mudancas no codigo.
# O .love e um zip deterministico (ordem alfabetica, data fixa, deflate) sem os projetos do Aseprite (*.ase), o
# cover.kra/cover.png, scripts/, os README.md, .gitignore e CODE_OF_CONDUCT.md.
#
#   src/FredGames.Bundler/Builds/build-spamality.sh
#
# Saida: artifacts/build/spamality-b787841/spamality.love

set -euo pipefail

COMMIT=b787841a4c157121a730cf82799802ce2281a26a
SHA256=cd2e11c3f3c8777135d13eae847c42805a23f4552c22962d56028cf90bd141ff

here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
root="$(git -C "$here" rev-parse --show-toplevel 2>/dev/null || pwd)"
out="$root/artifacts/build/spamality-b787841"
cache="$root/artifacts/build/cache"

mkdir -p "$cache"
tarball="$cache/spamality-b787841.tar.gz"
[ -f "$tarball" ] || curl -fsSL "https://github.com/liquidev/spamality/archive/$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

python3 -I - "$out/tree" "$out/spamality.love" <<'PY'
import os, sys, zipfile
src, dest = sys.argv[1:]
skip = ('README.md', 'jam/README.md', 'data/sprites/README.md', '.gitignore', 'CODE_OF_CONDUCT.md', 'cover.kra',
        'cover.png')
names = []
for base, dirs, files in os.walk(src):
    for f in files:
        rel = os.path.relpath(os.path.join(base, f), src).replace(os.sep, '/')
        if rel.endswith('.ase') or rel in skip or rel.startswith('scripts/'):
            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/spamality.love"