#!/usr/bin/env bash
# Exporta o Stellar Highway (Safwan Murad / Stellar Stones, GPL-3.0; github.com/Safwan-Murad/Stellar-Highway) para a web
# com o Godot 4.7.2 oficial (a versao do projeto): renderer Compatibility, SEM threads (modelo web_nothreads_release),
# sem PWA. Mudancas no projeto (stellar-highway/web.patch): renderer Compatibility e fisica sem thread separada; o
# botao que abre a pasta de replays no gerenciador de arquivos (OS.shell_open) some; os creditos trocam a explosao do
# missil de terceiros (sem licenca) pela nossa, e as mencoes a loja de apps saem do README e do CONTRIBUTING. Os 11
# quadros da explosao (46x45) sao gerados por stellar-highway/explosion.py (dominio publico, determinístico) com os
# mesmos nomes dos originais (GameFiles/SpinHead IMGS/Missile/Explosion/N.png), e os .import do autor continuam valendo.
#
#   src/FredGames.Bundler/Builds/build-stellar-highway.sh
#
# O editor (macOS universal) e os modelos de exportacao vem do release 4.7.2-stable do GitHub, conferidos pelo
# SHA-256 e ficam em artifacts/tools/godot-4.7.2, instalados sob lockf. O editor roda com HOME dentro da pasta de saida.
#
# Saida: artifacts/build/stellar-highway-b7f9900/{web/,stellar-highway-b7f9900.tar.gz}, que o bundle.yaml do jogo
# confere pelo SHA-256. O tar.gz e o fonte do jogo ja com as mudancas acima e sai igual a cada execucao.

set -euo pipefail

COMMIT=b7f990027674472c0cadafcbcc103f71320333a9
SHA256=5f10b2f5e0a702571489df3f045712f2b0ddb3113a9ade7f0963c06d27ebe655
GODOT=4.7.2
GODOT_URL=https://github.com/godotengine/godot/releases/download/$GODOT-stable
GODOT_MAC_SHA256=c58a24e31d720be9d62f60cb5627c4e695fb72f21b0cfe1bc9ccaa9a3b3ba63e
GODOT_TPZ_SHA256=f298490b8d44d934be425a5a65a51bf15f422428b229a06a6e11d9ffea248011

here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
root="$(git -C "$here" rev-parse --show-toplevel 2>/dev/null || pwd)"
out="$root/artifacts/build/stellar-highway-${COMMIT:0:7}"
cache="$root/artifacts/build/cache"
tools="$root/artifacts/tools"

mkdir -p "$cache"
fetch() {
  if [ ! -f "$cache/$2" ]; then
    curl -fsSL --retry 4 "$1" -o "$cache/$2.partial" && mv "$cache/$2.partial" "$cache/$2"
  fi
  echo "$3  $cache/$2" | shasum -a 256 -c -
}

install_godot() {
  [ -d "$tools/godot-$GODOT" ] && return 0
  fetch "$GODOT_URL/Godot_v$GODOT-stable_macos.universal.zip" "Godot_v$GODOT-stable_macos.universal.zip" "$GODOT_MAC_SHA256"
  fetch "$GODOT_URL/Godot_v$GODOT-stable_export_templates.tpz" "Godot_v$GODOT-stable_export_templates.tpz" "$GODOT_TPZ_SHA256"
  rm -rf "$tools/godot-$GODOT.tmp"
  mkdir -p "$tools/godot-$GODOT.tmp"
  unzip -q "$cache/Godot_v$GODOT-stable_macos.universal.zip" -d "$tools/godot-$GODOT.tmp"
  unzip -q "$cache/Godot_v$GODOT-stable_export_templates.tpz" templates/web_nothreads_release.zip templates/version.txt \
    -d "$tools/godot-$GODOT.tmp"
  mv "$tools/godot-$GODOT.tmp" "$tools/godot-$GODOT"
}
if [ "${1:-}" = "--install" ]; then install_godot; exit 0; fi

fetch "https://github.com/Safwan-Murad/Stellar-Highway/archive/$COMMIT.tar.gz" "stellar-highway-${COMMIT:0:7}.tar.gz" "$SHA256"
if [ ! -d "$tools/godot-$GODOT" ]; then
  lockf -k "$root/artifacts/godot-$GODOT.lock" bash "${BASH_SOURCE[0]}" --install
fi

rm -rf "$out"
mkdir -p "$out/tree" "$out/web"
tar -xzf "$cache/stellar-highway-${COMMIT:0:7}.tar.gz" -C "$out/tree" --strip-components 1

# Mudancas do porte (web.patch) e a explosao nossa no lugar da de terceiros.
( cd "$out/tree" && patch -p1 < "$here/stellar-highway/web.patch" )
python3 -I "$here/stellar-highway/explosion.py" "$out/tree/GameFiles/SpinHead IMGS/Missile/Explosion"
rm -f "$out/tree/"*.orig

# O Godot 4.4+ cria um .uid aleatorio para cada script sem ele (o projeto e de uma versao anterior ou o autor nao
# o versionou), o que muda o .pck a cada build. Criamos os faltantes com um valor derivado do caminho.
python3 -I - "$out/tree" <<'PY'
import hashlib, os, sys
A = 'abcdefghijklmnopqrstuvwxyz01234567'
for d, _, fs in os.walk(sys.argv[1]):
    for f in sorted(fs):
        if f.endswith(('.gd', '.gdshader', '.gdshaderinc')) and not os.path.exists(os.path.join(d, f + '.uid')):
            n = int.from_bytes(hashlib.sha256(os.path.relpath(os.path.join(d, f), sys.argv[1]).encode()).digest()[:8], 'big') >> 12
            s = ''
            for _ in range(12):
                s += A[n % 34]; n //= 34
            open(os.path.join(d, f + '.uid'), 'w').write('uid://' + s + '\n')
PY

# O Godot 4.7 sorteia um unique_id para cada no de .tscn que nao o traz, e isso muda o .scn exportado (e o .pck) a
# cada build. Gravamos os faltantes com um valor derivado do caminho da cena e do no.
python3 -I - "$out/tree" <<'PY'
import hashlib, os, re, sys
for d, _, fs in os.walk(sys.argv[1]):
    for f in sorted(fs):
        if not f.endswith('.tscn'):
            continue
        path = os.path.join(d, f)
        rel = os.path.relpath(path, sys.argv[1])
        lines = open(path, encoding='utf-8').read().split('\n')
        used = {int(m) for l in lines for m in re.findall(r'unique_id=(\d+)', l)}
        for i, l in enumerate(lines):
            if l.startswith('[node ') and 'unique_id=' not in l and l.endswith(']'):
                n = int.from_bytes(hashlib.sha256(f'{rel}:{i}:{l}'.encode()).digest()[:8], 'big') % 2147483647 or 1
                while n in used:
                    n = n % 2147483646 + 1
                used.add(n)
                lines[i] = l[:-1] + f' unique_id={n}]'
        open(path, 'w', encoding='utf-8').write('\n'.join(lines))
PY

# Data fixa nos arquivos e fonte publicado em tar deterministico (ordem, dono e data fixos).
TZ=UTC find "$out/tree" -exec touch -t 202001010000 {} +
( cd "$out/tree" && find . -type f | sed 's|^\./||' | LC_ALL=C sort > "$out/files.txt" )
( cd "$out/tree" && COPYFILE_DISABLE=1 tar --format=ustar --uid 0 --gid 0 --uname root --gname root -n \
    -cf - -T "$out/files.txt" ) | gzip -n -9 > "$out/stellar-highway-${COMMIT:0:7}.tar.gz"

project="$out/tree/."
cp "$here/stellar-highway/export_presets.cfg" "$project/export_presets.cfg"

export HOME="$out/home" TZ=UTC LC_ALL=C
templates="$HOME/Library/Application Support/Godot/export_templates/$GODOT.stable"
mkdir -p "$templates"
cp "$tools/godot-$GODOT/templates/web_nothreads_release.zip" "$tools/godot-$GODOT/templates/version.txt" "$templates/"

godot="$tools/godot-$GODOT/Godot.app/Contents/MacOS/Godot"
cd "$project"
# A primeira passada importa os recursos (cria .godot/); a segunda exporta.
"$godot" --headless --path . --import > "$out/import.log" 2>&1 || true
# O cursor do mouse vem do project.godot, lido antes da importacao: a segunda passada ja o encontra.
"$godot" --headless --path . --import > "$out/import2.log" 2>&1 || true
"$godot" --headless --path . --export-release "Web" "$out/web/index.html" > "$out/export.log" 2>&1
ls -l "$out/web"