#!/usr/bin/env bash
# Exporta o Mission: Apophis 2036 (Tobiasz Stamborski, 2023; github.com/tstamborski/mission-apophis-2036, commit
# a13a4cf; codigo MIT, pixel art, fonte e musicas do proprio autor no mesmo repositorio) para a web com o Godot 4.5.1
# oficial (o projeto e do 4.0 e ja usa o renderer Compatibility; o 4.5.1 abre e exporta sem ajustes e da o mesmo pck a cada execucao, o que o 4.7.2 nao da): modelo
# web_nothreads_release (sem threads: nao precisa de SharedArrayBuffer nem de COOP/COEP), sem PWA. O
# export_presets.cfg (preset "Web") e nosso, ao lado deste script.
#
# Mudancas no projeto:
#   - mission-apophis-2036/web.patch: sai a opcao "Exit" do menu principal e da pausa (get_tree().quit() so
#     congela a pagina).
#   - assets/nazalogo32.png (emblema da agencia ficticia "NAZA", que copia o desenho do emblema da NASA) e
#     assets/splash.png (abertura com o desenho de um console de uma fabricante) trocam pelas nossas
#     (mission-apophis-2036/gen-art.py; .png versionados ao lado).
#   - o script da um .uid fixo a cada script/shader sem um (o Godot 4.4+ sorteia um a cada importacao).
#
#   src/FredGames.Bundler/Builds/build-mission-apophis-2036.sh
#
# O editor (macOS) e os modelos de exportacao vem do release 4.5.1-stable do GitHub, conferidos pelo SHA-256 e
# ficam em artifacts/tools/godot-4.5.1, instalados sob lockf. O editor roda com HOME dentro da pasta de saida.
#
# Saida: artifacts/build/mission-apophis-2036-a13a4cf/{web/,mission-apophis-2036-a13a4cf.tar.gz}, que o bundle.yaml
# do jogo confere pelo SHA-256. O tar.gz e o fonte do jogo com as duas imagens trocadas (o patch vai ao lado) e sai
# igual a cada execucao.

set -euo pipefail

NAME=mission-apophis-2036
COMMIT=a13a4cf1e8926731b5bcc61632abc0227dea51d8
SHA256=6956d04cb49e8728af4e0fece50990c92a406a4edc5dd456a16265a03bb579e3
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/$NAME-${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/tstamborski/mission-apophis-2036/archive/$COMMIT.tar.gz" "$NAME-${COMMIT:0:7}.tar.gz" "$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/$NAME-${COMMIT:0:7}.tar.gz" -C "$out/tree" --strip-components 1
tree="$out/tree"

# 1. As duas imagens que imitam marcas de terceiros trocam pelas nossas (mesmo nome: o .import e o uid ficam).
cp "$here/$NAME/nazalogo32.png" "$tree/assets/nazalogo32.png"
cp "$here/$NAME/splash.png" "$tree/assets/splash.png"

# 2. Data fixa e fonte publicado (antes do patch e dos .uid; o patch vai ao lado), em tar deterministico.
TZ=UTC find "$tree" -exec touch -t 202001010000 {} +
( cd "$tree" && find . -type f | sed 's|^\./||' | LC_ALL=C sort > "$out/files.txt" )
( cd "$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/$NAME-${COMMIT:0:7}.tar.gz"

# 3. Patch (sem "Exit").
patch -p1 -d "$tree" < "$here/$NAME/web.patch" > "$out/patch.log"
# 4. Scripts e shaders sem .uid ganham um derivado do caminho (SHA-256, 63 bits, no texto base 34 do Godot).
python3 -I - "$tree" <<'PY'
import hashlib, os, sys
root = sys.argv[1]
for d, dirs, files in os.walk(root):
    dirs[:] = sorted(x for x in dirs if x != '.git')
    for f in sorted(files):
        if f.endswith(('.gd', '.gdshader', '.gdshaderinc')) and not os.path.exists(os.path.join(d, f + '.uid')):
            rel = os.path.relpath(os.path.join(d, f), root).replace(os.sep, '/')
            n = int.from_bytes(hashlib.sha256(rel.encode()).digest()[:8], 'big') & 0x7FFFFFFFFFFFFFFF
            t = ''
            while n:
                c = n % 34
                t = (chr(97 + c) if c < 25 else chr(48 + c - 25)) + t
                n //= 34
            open(os.path.join(d, f + '.uid'), 'w').write('uid://' + t + '\n')
PY
TZ=UTC find "$tree" -exec touch -t 202001010000 {} +

cp "$here/$NAME/export_presets.cfg" "$tree/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 "$tree"
# A primeira passada importa os recursos (cria .godot/); a segunda exporta.
"$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"