#!/usr/bin/env bash
# Exporta o Meteor Power (Snoring Cat Games / Levi Lindsey, Ludum Dare 50; codigo MIT, arte, musica e sons CC0,
# github.com/SnoringCatGames/meteor_power) para a web com o Godot 3.5.3 oficial (o dist/ do autor foi gerado
# com o 3.5 rc5): modelo webassembly_release (sem threads: nao precisa de SharedArrayBuffer nem de COOP/COEP),
# sem PWA. O repositorio usa submodulos (scaffolder, surfacer, surface_tiler, squirrel_away, todos MIT, mesma
# autoria) que o tarball do GitHub nao traz: o script baixa o tarball de cada um no commit exato que o
# repositorio fixa e confere o SHA-256. O jogo roda como o autor publicou; o patch meteor-power/fredygames.patch
# so tira o que fala com servidores de terceiros:
#   - Google Analytics (id vazio; Analytics._trigger_collect/_trigger_batch nunca enviam; snippet GA dos export_shell.html);
#   - envio de logs de erro ao Google Cloud Storage (error_logs_url vazio; _upload_crash_log nao envia);
#   - links de privacidade/termos (Google Docs) e de suporte (somem da tela Sobre quando vazios);
#   - e acrescenta ao <head> do export_shell.html uma CSP que so aceita a propria origem (com unsafe-eval, que o
#     JavaScript.eval do Godot 3 exige) e o carregador que troca index.wasm por index.wasm.gz (o CloudFront nao
#     comprime acima de 10 MB; o .wasm tem 13,8 MB).
# O export_presets.cfg (preset "Web", com o export_shell.html do jogo) e nosso e fica ao lado deste script; deixa
# de fora os arquivos de autoria (.aseprite etc.) e os .wav de musica que o jogo nao usa (ele toca os .ogg).
#
#   src/FredGames.Bundler/Builds/build-meteor-power.sh
#
# Saida: artifacts/build/meteor-power-4c38d2e/{web/,meteor-power-4c38d2e.tar.gz}, que o bundle.yaml do jogo
# confere pelo SHA-256. O tar.gz e o projeto com os submodulos (sem o dist/ do autor, que e um export pronto) e
# sai igual a cada execucao.

set -euo pipefail

SLUG=meteor-power
SHORT=4c38d2e
GODOT=3.5.3
GODOT_URL=https://github.com/godotengine/godot/releases/download/$GODOT-stable
GODOT_MAC_SHA256=d448bf70a438edfd506c6878963327d7814d83fd636d132294fb7abb1f971246
GODOT_TPZ_SHA256=ae3c1f6fbd431b9e3b67c1f9e42539a6d270a0ccc35558f13072f04b968312d1
# repo  commit  sha256  (destino dentro do projeto; "." = o proprio jogo)
PARTS=(
  "meteor_power 4c38d2e0e2acf998165473f9a6d3d6607ebc27ed f9884a89c5aacca51d49000e49e770bbdc6ccd9df5c5ef0584813cb686db2fd8 ."
  "scaffolder 20db8b6a55a3c68912b59c1babc4d96948ef3bf0 beaecce5941da2facaba7ac96978ec039feab772409b32ec1f457e8db7dac363 addons/scaffolder"
  "squirrel_away 26a56fc32decc98d0c7eca65050daf6e99ff643a 60f55a21b6ebf738f224dcd91dccbfe917005e85e2b28198d2ce8e6349cd5f0b addons/squirrel_away"
  "surface_tiler cc9cd617c5027a6d6ab8414c71635b433e14cc6a c43f20b13b517f20f15384a2bdbbe29233d03443987bcf525fd6cdcc74f24d63 addons/surface_tiler"
  "surfacer 0b43b8216b07707f625c3db4836436fff1642064 a7b0e6e6154bf3acbacccffc3560a9917e476b0c2b8a84ba597eaeba71cd9790 addons/surfacer"
)

here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
root="$(git -C "$here" rev-parse --show-toplevel 2>/dev/null || pwd)"
out="$root/artifacts/build/$SLUG-$SHORT"
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/$2" | shasum -a 256 -c -
}
for p in "${PARTS[@]}"; do
  read -r repo commit sha dest <<< "$p"
  fetch "https://github.com/SnoringCatGames/$repo/archive/$commit.tar.gz" "$repo-${commit:0:7}.tar.gz" "$sha"
done
fetch "$GODOT_URL/Godot_v$GODOT-stable_osx.universal.zip" "Godot_v$GODOT-stable_osx.universal.zip" "$GODOT_MAC_SHA256"
fetch "$GODOT_URL/Godot_v$GODOT-stable_export_templates.tpz" "Godot_v$GODOT-stable_export_templates.tpz" "$GODOT_TPZ_SHA256"

# Instalacao compartilhada com outros jogos Godot 3.3.2; lockf evita duas instalacoes ao mesmo tempo.
if [ ! -d "$tools/godot-$GODOT" ]; then
  install_godot() {
    [ -d "$tools/godot-$GODOT" ] && return 0
    rm -rf "$tools/godot-$GODOT.tmp"
    mkdir -p "$tools/godot-$GODOT.tmp"
    unzip -q "$cache/Godot_v$GODOT-stable_osx.universal.zip" -d "$tools/godot-$GODOT.tmp"
    unzip -q "$cache/Godot_v$GODOT-stable_export_templates.tpz" templates/webassembly_release.zip templates/version.txt \
      -d "$tools/godot-$GODOT.tmp"
    mv "$tools/godot-$GODOT.tmp" "$tools/godot-$GODOT"
  }
  export -f install_godot; export tools GODOT cache
  lockf -k "$root/artifacts/godot-$GODOT.lock" bash -c install_godot
fi

rm -rf "$out"
mkdir -p "$out/tree" "$out/web"
for p in "${PARTS[@]}"; do
  read -r repo commit sha dest <<< "$p"
  mkdir -p "$out/tree/$dest"
  tar -xzf "$cache/$repo-${commit:0:7}.tar.gz" -C "$out/tree/$dest" --strip-components 1
done
project="$out/tree"

# Imagens da tela de carregamento que o export_shell.html pede (o autor as deixa no dist/ dele).
mkdir -p "$out/shell"
cp "$project/dist/logo.png" "$project/dist/loading.gif" "$project/dist/favicon.png" "$out/shell/"
rm -rf "$project/dist"

patch -s -p1 -d "$project" < "$here/$SLUG/fredygames.patch"
cp "$here/$SLUG/export_presets.cfg" "$project/export_presets.cfg"

# Fonte publicado: o projeto inteiro (com o patch), em tar deterministico (ordem, dono e data fixos).
TZ=UTC find "$project" -exec touch -t 202001010000 {} +
( cd "$project" && find . -type f | sed 's|^\./||' | LC_ALL=C sort > "$out/files.txt" )
( cd "$project" && COPYFILE_DISABLE=1 tar --format=ustar --uid 0 --gid 0 --uname root --gname root -n \
    -cf - -T "$out/files.txt" ) | gzip -n -9 > "$out/$SLUG-$SHORT.tar.gz"

# O importador do Godot 3 compara datas: com os arquivos em 2020 ele nao reimporta direito; volta a data de agora.
find "$project" -exec touch {} +

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

godot="$tools/godot-$GODOT/Godot.app/Contents/MacOS/Godot"
cd "$project"
# A primeira passada importa os recursos (cria .import/); a segunda exporta.
"$godot" --path . --editor --quit --no-window > "$out/import.log" 2>&1 || true
"$godot" --path . --export "Web" "$out/web/index.html" --no-window > "$out/export.log" 2>&1
cp "$out/shell/logo.png" "$out/shell/loading.gif" "$out/shell/favicon.png" "$out/web/"
ls -l "$out/web"