#!/usr/bin/env bash
# Exporta o Salmoning (woonaftl (Eugene Begunkov), Ludum Dare 55, MIT; github.com/woonaftl/ludum-dare-55) para a web com o Godot 4.4.1 oficial
# (o projeto e do Godot 4.2): renderer Compatibility, SEM threads (modelo web_nothreads_release), sem PWA.
# O jogo roda como o autor publicou, com a retirada de quatro sons de origem nao comprovada e uma linha dos
# creditos (ver abaixo).
#
#   src/FredGames.Bundler/Builds/build-salmoning.sh
#
# O editor (macOS universal) e os modelos de exportacao vem do release 4.4.1-stable do GitHub, conferidos pelo
# SHA-256 (os mesmos arquivos do SHA512-SUMS.txt do release) e ficam em artifacts/tools/godot-4.4.1, instalados
# sob lockf (outros scripts podem estar instalando ao mesmo tempo). O editor roda com HOME dentro da pasta de
# saida (configuracao e modelo isolados).
#
# Saida: artifacts/build/salmoning-7ead7cf/{web/,salmoning-7ead7cf.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=7ead7cf80a6324a324a3cf020e8794d3e244f955
SHA256=36591591cd9e75ec58273bb9db8961f5710b6ebf11b0906c72081f503401d5c3
GODOT=4.4.1
GODOT_URL=https://github.com/godotengine/godot/releases/download/$GODOT-stable
GODOT_MAC_SHA256=6c670596d21afb7917c739d0b85b10b4ac6a44051ffa2a672f90bc7da5062864
GODOT_TPZ_SHA256=7a8d14ade489fd4d22f178193021fe8a876a9e51068ed4dde26dac3ae4c59a88

here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
root="$(git -C "$here" rev-parse --show-toplevel 2>/dev/null || pwd)"
out="$root/artifacts/build/salmoning-${COMMIT:0:7}"
cache="$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/woonaftl/ludum-dare-55/archive/$COMMIT.tar.gz" "salmoning-${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/salmoning-${COMMIT:0:7}.tar.gz" -C "$out/tree" --strip-components 1

# Cada passo falha se o texto esperado nao existir (o commit pinado nao muda, mas assim o erro aparece).
# 1. Quatro dos sete sons saem do jogo e do fonte, porque nao da para comprovar a licenca: ambient.wav e
#    quack.wav (o autor creditou "freesound.org" sem lista por arquivo; o quack.wav traz metadados de
#    biblioteca de sons, "Mallard Duck Quack", Pro Tools, e nao e dele) e bubble.wav e win.wav (estereo, sem
#    origem; os outros tres sons, mono, tem cara de gerador de efeitos). Os AudioStreamPlayer ficam sem som.
# 2. A tela de creditos perde a linha "Ambient sounds: freesound.org" (o som saiu) e passa a dizer "Godot Engine".
for f in ambient quack bubble win; do
  [ -f "$out/tree/audio/$f.wav" ] && [ -f "$out/tree/audio/$f.wav.import" ]
  rm -f "$out/tree/audio/$f.wav" "$out/tree/audio/$f.wav.import"
done
python3 -I - "$out/tree" <<'PY'
import re, sys
root = sys.argv[1]
p = root + '/scenes/audio_bus.tscn'
s = open(p, encoding='utf-8').read()
for f in ('bubble', 'win', 'ambient', 'quack'):
    m = re.search(r'\[ext_resource [^\n]*res://audio/%s\.wav" id="([^"]+)"\]\n' % f, s)
    assert m, f
    s = s.replace(m.group(0), '')
    assert ('stream = ExtResource("%s")\n' % m.group(1)) in s
    s = s.replace('stream = ExtResource("%s")\n' % m.group(1), '')
s = s.replace('load_steps=9', 'load_steps=5')
open(p, 'w', encoding='utf-8').write(s)
p = root + '/scenes/credits.tscn'
s = open(p, encoding='utf-8').read()
a = 'Ambient sounds: freesound.org\n\nPowered by Godot 4.2.1'
assert a in s
s = s.replace(a, 'Powered by Godot Engine')
open(p, 'w', encoding='utf-8').write(s)
PY
! grep -rIl -E 'audio/(ambient|quack|bubble|win)\.wav' "$out/tree" | grep .

# 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

# 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/salmoning-${COMMIT:0:7}.tar.gz"

project="$out/tree/."
cp "$here/salmoning/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 > "$out/import.log" 2>&1 || true
"$godot" --headless --path . --export-release "Web" "$out/web/index.html" > "$out/export.log" 2>&1
ls -l "$out/web"