#!/usr/bin/env bash
# Exporta o Dragon Hoard (Jacob Preston, Ludum Dare 58, MIT; github.com/pres2300/ludum_dare_58) para a web com o Godot 4.5.1 oficial
# (a versao do projeto): renderer Compatibility, SEM threads (modelo web_nothreads_release), sem PWA.
# O projeto do autor roda como foi publicado; so acrescentamos o export_presets.cfg (nosso).
#
#   src/FredGames.Bundler/Builds/build-dragon-hoard.sh
#
# O editor (macOS universal) e os modelos de exportacao vem do release 4.5.1-stable do GitHub, conferidos pelo
# SHA-256 (os mesmos arquivos do SHA512-SUMS.txt do release) e ficam em artifacts/tools/godot-4.5.1, 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/dragon-hoard-b72113c/{web/,dragon-hoard-b72113c.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=b72113c8eb4fc02ec3275db1e7e3b0364e608777
SHA256=59ecaa10214ae8c8251af3132ef9e5b28f8bddc6fefcb97ae2cb9bed050815fb
GODOT=4.5.1
GODOT_URL=https://github.com/godotengine/godot/releases/download/$GODOT-stable
GODOT_MAC_SHA256=65c27959d02aaacfc131ec7ecb90179ba8045200cb02982bf2be96d117010b8a
GODOT_TPZ_SHA256=1998af37f1387684e2c211cdb483daf492fc64dc6b12096bddcdca25b6910c86

here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
root="$(git -C "$here" rev-parse --show-toplevel 2>/dev/null || pwd)"
out="$root/artifacts/build/dragon-hoard-${COMMIT:0:7}"
cache="$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/pres2300/ludum_dare_58/archive/$COMMIT.tar.gz" "dragon-hoard-${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/dragon-hoard-${COMMIT:0:7}.tar.gz" -C "$out/tree" --strip-components 1

# Cada passo falha se o texto esperado nao existir (o commit pinado nao muda, mas assim o erro aparece).
# nada a alterar no projeto do autor

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

project="$out/tree/."
cp "$here/dragon-hoard/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"