#!/usr/bin/env bash
# Monta o BrowserQuest de um jogador so (codigo MPL-2.0, conteudo CC BY-SA 3.0; Little Workshop / Mozilla) a partir do commit
# af32d24 de github.com/mozilla/BrowserQuest. O jogo original e um MMO: um servidor Node.js fala por WebSocket com os
# navegadores. Aqui o servidor (server/js) roda num Web Worker da propria pagina, com o transporte trocado por postMessage
# (browserquest/server-head.js e server-tail.js embrulham os modulos CommonJS), e ha um unico jogador.
#
# Mudancas (browserquest/browserquest-fredygames.patch, mais os passos abaixo):
#   - o jogo roda numa janela de 1100x800 (index.html e a moldura, game.html o jogo): o layout do BrowserQuest depende da largura;
#   - GameClient usa um LocalSocket (Web Worker) no lugar do WebSocket; sem chat, sem contagem de jogadores, sem timeout;
#   - sem Mozilla/Firefox: armadura firefox, firefox.mp3, pocao de fogo, falas com links, aba "mozilla" e icones sociais;
#   - sem os personagens de terceiros (Rick, Nyan, Octocat, Agent) nem as conquistas ligadas a eles;
#   - fontes GraphicPixel/AdvoCut (sem licenca no repositorio) trocadas pela VT323 (OFL-1.1, google/fonts);
#   - sem links externos, sem compartilhamento, sem musicas (o repositorio nao as traz), localStorage com prefixo proprio.
#
#   src/FredGames.Bundler/Builds/build-browserquest.sh
#
# Saida: artifacts/build/browserquest-af32d24/browserquest-af32d24-dist.tar.gz (dist/); tem que sair igual em dois builds.

set -euo pipefail

COMMIT=af32d247cac3495ca430d0effbb88dd5f3250b2c
SHA256=0242bb9766ebb7e5d99e653d255c8c892bef5b76c3f3107444a5ddd84036abc5
GF=2fe1e8c6b137fb13041a7cfca6fdcd8a910ea4dc
FONT_SHA256=cf4de751ada78ceac033dbe16a687742939995b77bc2a052ae17a4957958594d

here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
root="$(git -C "$here" rev-parse --show-toplevel 2>/dev/null || pwd)"
out="$root/artifacts/build/browserquest-${COMMIT:0:7}"
cache="$root/artifacts/build/cache"
tgz="$cache/browserquest-${COMMIT:0:7}.tar.gz"
py="$root/artifacts/tools/venv/bin/python"
bq="$here/browserquest"

mkdir -p "$cache"
fetch() { # url arquivo sha256
  [ -f "$2" ] || { curl -fsSL --retry 4 "$1" -o "$2.partial" && mv "$2.partial" "$2"; }
  echo "$3  $2" | shasum -a 256 -c - >/dev/null
}
fetch "https://github.com/mozilla/BrowserQuest/archive/$COMMIT.tar.gz" "$tgz" "$SHA256"
fetch "https://raw.githubusercontent.com/google/fonts/$GF/ofl/vt323/VT323-Regular.ttf" "$cache/VT323-Regular-${GF:0:7}.ttf" "$FONT_SHA256"

rm -rf "$out"
mkdir -p "$out/tree"
tar -xzf "$tgz" -C "$out/tree" --strip-components 1
cd "$out/tree"
patch -s -p1 < "$bq/browserquest-fredygames.patch"

dist="$out/dist"
mkdir "$dist"
cp -R client/. "$dist/"
cp shared/js/gametypes.js "$dist/js/gametypes.js"
# o jogo vira game.html; index.html e uma moldura que o mostra numa janela de 1100x800 reduzida para caber
mv "$dist/index.html" "$dist/game.html"
cp "$bq/wrapper.html" "$dist/index.html"

# --- servidor: modulos do Node embrulhados num unico Web Worker ---
{
  cat "$bq/server-head.js"
  for f in lib/class area character checkpoint chest chestarea entity format formulas item map message mob mobarea npc player properties utils worldserver; do
    echo "__defs['${f##*/}'] = function (module, exports, require) {"
    cat "server/js/$f.js"
    echo
    echo "};"
  done
  echo "__defs['gametypes'] = function (module, exports, require) {"
  cat shared/js/gametypes.js
  echo
  echo "};"
  cat "$bq/server-tail.js"
} > "$dist/js/bqserver.js"
mkdir -p "$dist/maps"
python3 -I "$bq/filter-map.py" server/maps/world_server.json "$dist/maps/world_server.json"

# --- fontes ---
cd "$dist"
rm -f fonts/*
cp "$cache/VT323-Regular-${GF:0:7}.ttf" fonts/VT323-Regular.ttf
cp "$bq/fredygames-storage.js" js/fredygames-storage.js

# --- o que o port nao usa ---
for n in rick nyan octocat agent firefox item-firepotion; do
  rm -f "sprites/$n.json" "img/1/$n.png" "img/2/$n.png" "img/3/$n.png"
done
rm -f audio/sounds/firefox.mp3 audio/sounds/firefox.ogg
rm -f img/common/promo-title.jpg img/common/screenshot.jpg
rm -f config/*-dist README.md css/ie.css js/lib/css3-mediaqueries.js js/build.js
"$py" -I "$bq/blank-sprites.py" "$dist"

# nada de requisicao externa nem de marca no que aparece na tela (nomes de classe CSS e constantes mortas nao contam)
bad=$( { grep -rniE "https?://" index.html game.html css sprites maps; grep -rniE "mozilla|rick astley|never gonna|octocat|github" index.html game.html css js/*.js --exclude=bqserver.js --exclude=gametypes.js; grep -niE "twitter|facebook" index.html game.html; } 2>/dev/null | grep -vE "http-equiv|^js/(util|text)\.js:" || true)
if [ -n "$bad" ]; then
  echo "Sobrou referencia externa ou de marca:" >&2; echo "$bad" >&2; exit 1
fi

find "$dist" -name .DS_Store -delete
find "$dist" -exec touch -t 202611090000 {} +
( cd "$out" && find dist -type f | LC_ALL=C sort > list.txt \
  && COPYFILE_DISABLE=1 tar --format=ustar --uid 0 --gid 0 --uname root --gname root -n -cf - -T list.txt \
  | gzip -n -9 > "browserquest-${COMMIT:0:7}-dist.tar.gz" && rm list.txt )
rm -rf "$out/tree"
ls -l "$out/browserquest-${COMMIT:0:7}-dist.tar.gz"
shasum -a 256 "$out/browserquest-${COMMIT:0:7}-dist.tar.gz"