#!/usr/bin/env bash
# Exporta o Scrap Spaceship (Justin Baker "Nisovin", Ludum Dare 45; codigo MIT, github.com/nisovin/LD45; creditos de arte
# e som CC0/CC BY/CC BY-SA e musica CC BY 4.0 no credits.txt) para a web com o Godot 3.5.3 oficial (o projeto e do Godot 3.x
# e abre sem mudancas): modelo webassembly_release (sem threads: nao precisa de SharedArrayBuffer nem de COOP/COEP), sem
# PWA. O repositorio nao traz export_presets.cfg (esta no .gitignore); o nosso fica ao lado deste script. Um patch nosso
# (scrap-spaceship/web.patch, aplicado aqui): os botoes Quit (menu e pausa) ficam escondidos em vez de desativados e os
# links da tela de creditos nao abrem nada (OS.shell_open).
#
#   src/FredGames.Bundler/Builds/build-scrap-spaceship.sh
#
# O editor (macOS) e os modelos de exportacao vem do release 3.5.3-stable do GitHub, conferidos pelo SHA-256 e ficam
# em artifacts/tools/godot-3.5.3, instalados sob lockf. O editor roda com HOME dentro da pasta de saida.
#
# Saida: artifacts/build/scrap-spaceship-41d1bff/web/, que o bundle.yaml do jogo confere pelo SHA-256.

set -euo pipefail

NAME=scrap-spaceship
REPO=nisovin/LD45
COMMIT=41d1bff75687937701f4da26886b428359a1e356
SHA256=ec25caf2ba413dc7c9962cbb363fb1bbbad705824378502ed8afa5d7b03d03eb
SUBDIR=project
GODOT=3.5.3
GODOT_URL=https://github.com/godotengine/godot/releases/download/$GODOT-stable
GODOT_MAC_SHA256=d448bf70a438edfd506c6878963327d7814d83fd636d132294fb7abb1f971246
GODOT_TPZ_SHA256=ae3c1f6fbd431b9e3b67c1f9e42539a6d270a0ccc35558f13072f04b968312d1

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_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"
  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"
}
if [ "${1:-}" = "--install" ]; then install_godot; exit 0; fi

fetch "https://github.com/$REPO/archive/$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"
project="$tree${SUBDIR:+/$SUBDIR}"

patch -d "$tree" -p1 < "$here/$NAME/web.patch"

# Data fixa nos arquivos.
TZ=UTC find "$tree" -exec touch -t 202001010000 {} +

cp "$here/$NAME/export_presets.cfg" "$project/export_presets.cfg"

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 "$project"
# O repositorio nao traz a pasta .import/ (esta no .gitignore): a primeira passada importa os recursos, a segunda exporta.
"$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
ls -l "$out/web"