#!/usr/bin/env bash
# Exporta o Revengate (Yannick Gingras e colaboradores; roguelike steampunk em Lyon, 1855; codigo GPL-3.0-or-later,
# imagens e sons CC0 / CC BY / CC BY-SA com os creditos do CREDITS.md, fontes GNU FreeFont e Symbola;
# gitlab.com/ygingras/revengate) para a web com o Godot 4.4.1 oficial (o projeto pede o 4.3, que nao temos; o
# 4.4.1 abre e exporta o mesmo projeto): renderer Compatibility (o projeto ja usa), SEM threads (modelo
# web_nothreads_release), sem PWA. O export_presets.cfg (preset "Web") e nosso, ao lado deste script. Mudancas
# no projeto, todas visiveis no fonte publicado (o tar.gz ja as traz):
#   1. saem tres sons que o CREDITS.md nao cobre (assets/sounds/oh-yeah.mp3, src/sfx/angels_choir.mp3 e
#      src/items/clockwork-wreck.mp3, com os .import); os tres AudioStreamPlayer que os tocavam ficam sem
#      stream (silenciosos), o resto do jogo nao muda;
#   2. patch revengate/web.patch (inclui o item 1 nas cenas): follow_link() nao chama mais OS.shell_open, entao
#      os links das telas Sobre e Creditos nao abrem outras paginas;
#   3. as imagens dos monstros e das pessoas (src/monsters, src/people; fotos de ate 4000 px mostradas pequenas) sao
#      importadas com no maximo 1024 px de lado quando o autor nao pos limite (size_limit);
#   4. um .uid para cada script e shader (o projeto e do Godot 4.3 e nao os traz; o 4.4 sorteia um a cada importacao e o
#      pck mudava a cada execucao): derivado do caminho, para o export ser reprodutivel;
#   5. o export deixa de fora docs/, metadata/, tools/ e os .md que o jogo nao le (preset); o CREDITS.md, que a tela
#      de creditos le, continua.
#
#   src/FredGames.Bundler/Builds/build-revengate.sh
#
# O editor (macOS) e os modelos de exportacao vem do release 4.4.1-stable do GitHub, conferidos pelo SHA-256 e
# ficam em artifacts/tools/godot-4.4.1, instalados sob lockf. O editor roda com HOME dentro da pasta de saida.
#
# Saida: artifacts/build/revengate-ad6b2ee/{web/,revengate-ad6b2ee.tar.gz}, que o bundle.yaml do jogo confere pelo
# SHA-256. O tar.gz e o fonte publicado (o projeto no commit pinado ja com as mudancas 1 e 2) e sai igual a cada
# execucao.

set -euo pipefail

NAME=revengate
COMMIT=ad6b2ee6376e5e4e9d7e17e7a86f5bb8f807f775
SHA256=2718e097509e67d8ab181bad0a582d4608f51a464f8c7c6fb3d7480e40859fd3
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/$NAME-${COMMIT:0:7}"
cache="$root/artifacts/build/cache"
tools="$root/artifacts/tools"

mkdir -p "$cache"
fetch() {
  if [ ! -f "$cache/$2" ]; then
    curl -fsSL -A "Mozilla/5.0" --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

# O /-/archive/ do GitLab responde 403 a curl; a API devolve o mesmo git archive (conferido pelo SHA-256).
fetch "https://gitlab.com/api/v4/projects/ygingras%2Frevengate/repository/archive.tar.gz?sha=$COMMIT" "$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. Sons sem credito (os .import saem junto).
rm "$tree/assets/sounds/oh-yeah.mp3" "$tree/assets/sounds/oh-yeah.mp3.import" \
   "$tree/src/sfx/angels_choir.mp3" "$tree/src/sfx/angels_choir.mp3.import" \
   "$tree/src/items/clockwork-wreck.mp3" "$tree/src/items/clockwork-wreck.mp3.import"
# 2. Patch (cenas sem os sons, follow_link sem shell_open).
patch -p1 -d "$tree" < "$here/$NAME/web.patch" > "$out/patch.log"
if grep -rIn --exclude-dir=.git 'oh-yeah\|angels_choir\|clockwork-wreck' "$tree" | grep -v 'CREDITS\|\.md:' | grep .; then
  echo "restou referencia aos sons removidos" >&2; exit 1
fi

# 4. O repositorio e do Godot 4.3 e nao traz os .uid dos scripts; o 4.4 sorteia um para cada script a cada
# importacao (vai para o uid_cache.bin e para os .tres dos dialogos do pck, que mudava a cada execucao). Um .uid
# derivado do caminho (SHA-256, 63 bits, no texto base 34 do Godot) deixa o export reprodutivel.
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

# 3. Imagens grandes de monstros e pessoas: no maximo 1024 px de lado na importacao.
n=0
for f in "$tree"/src/monsters/*.import "$tree"/src/people/*.import; do
  if grep -q '^process/size_limit=0$' "$f"; then
    sed -i.bak 's|^process/size_limit=0$|process/size_limit=1024|' "$f"
    rm "$f.bak"
    n=$((n + 1))
  fi
done
test "$n" -ge 10

# Data fixa nos arquivos.
TZ=UTC find "$tree" -exec touch -t 202001010000 {} +
# Fonte publicado: o projeto inteiro (com as mudancas), em tar deterministico (ordem, dono e data fixos).
( cd "$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"

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"