#!/usr/bin/env bash
# Gera o flash-blip.love do Flash-Blip (Aliet Exposito, MIT) a partir do commit f87e9db do repositorio, com um
# patch nosso (publicado junto do fonte):
#   flash-blip/offline.patch   tira tudo que usa a rede: o cliente HTTP vira um stub que sempre falha, sem
#                              verificacao de versao no GitHub, sem placar online (nem pedido de nome) e sem os
#                              links que abrem o navegador na tela About.
# O .love e o conteudo de game/ (como o tools/build-love.sh do autor), em zip deterministico (ordem alfabetica,
# data fixa, deflate), sem lib/overlayStats.lua (so para depuracao) e sem os .gitkeep/.luacheckrc/.vscode.
#
#   src/FredGames.Bundler/Builds/build-flash-blip.sh
#
# Saida: artifacts/build/flash-blip-f87e9db/flash-blip.love

set -euo pipefail

COMMIT=f87e9db7fbdca967262fc746be0553481b31ccfc
SHA256=700feb8e1c3c28cfc46cc8d4e2f2ff0571f1388fcdda982082e66dd63e5d83c9

here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
root="$(git -C "$here" rev-parse --show-toplevel 2>/dev/null || pwd)"
out="$root/artifacts/build/flash-blip-f87e9db"
cache="$root/artifacts/build/cache"

mkdir -p "$cache"
tarball="$cache/flash-blip-f87e9db.tar.gz"
[ -f "$tarball" ] || curl -fsSL "https://github.com/plinkr/flash-blip/archive/$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/flash-blip/offline.patch"

python3 -I - "$out/tree/game" "$out/flash-blip.love" <<'PY'
import os, sys, zipfile
src, dest = sys.argv[1:]
skip_files = ('.gitkeep', '.luacheckrc', 'lib/overlayStats.lua')
names = []
for base, dirs, files in os.walk(src):
    dirs[:] = [d for d in dirs if not d.startswith('.')]
    for f in files:
        rel = os.path.relpath(os.path.join(base, f), src).replace(os.sep, '/')
        if rel in skip_files or f in skip_files:
            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/flash-blip.love"