#!/usr/bin/env bash
# Pecas comuns dos builds de jogos de Sprig do fredygames.com (ver a secao "Sprig" da skill bundler).
# Nao e executado direto: Builds/build-sprig.sh (ou um build-<slug>.sh) faz `. "$here/sprig-web/common.sh"` e chama sprig_build.
#
# O Sprig (Hack Club, github.com/hackclub/sprig) tem o engine em TypeScript (engine/src, MIT) e os jogos da galeria em
# games/*.js, contribuidos por pull request ao mesmo repositorio (licenca MIT do repo = a dos jogos, decisao do
# usuario em 2026-11-10; jogo que declare outra licenca ou venha de outro lugar segue a regra normal).
# O engine e compilado com o TypeScript 5.9.3 do package-lock.json (npm ci, sem scripts) para ES modules em
# artifacts/build/sprig-engine-<commit>/ (tsconfig do proprio engine, sem sourcemaps e sem .d.ts), e cada jogo vira
# artifacts/build/sprig-<slug>/{index.html,game.js,<jogo>.js,source tarball}. Tudo vem do tarball do commit pinado (sha256).
#
# Variaveis que o build-<slug>.sh define antes de chamar sprig_build:
#   SLUG        pasta do jogo em Content/games e da saida
#   GAME_FILE   nome do arquivo em games/ do commit pinado (ex.: Snake.js; maiusculas e minusculas contam)
#   TITLE       titulo da pagina (o @title do cabecalho)

SPRIG_COMMIT=1ad2050606db804158725a19f614cc70d1c6f441
SPRIG_SHA256=53d5425f3b73a8383688481ca0440dd359e571c6f908382c6df904cf36a4f620

sprig_here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
sprig_root="$(git -C "$sprig_here" rev-parse --show-toplevel 2>/dev/null || pwd)"
sprig_cache="$sprig_root/artifacts/cache/sprig"
sprig_ts="$sprig_root/artifacts/tools/sprig-ts"
sprig_engine_dir="$sprig_root/artifacts/build/sprig-engine-${SPRIG_COMMIT:0:7}"

sprig_engine() {
  local tarball="$sprig_cache/sprig-${SPRIG_COMMIT:0:7}.tar.gz"
  if [ ! -f "$tarball" ]; then
    mkdir -p "$sprig_cache"
    curl -fsSL -o "$tarball.part" "https://github.com/hackclub/sprig/archive/$SPRIG_COMMIT.tar.gz"
    mv "$tarball.part" "$tarball"
  fi
  echo "$SPRIG_SHA256  $tarball" | shasum -a 256 -c - >&2

  if [ ! -x "$sprig_ts/node_modules/.bin/tsc" ]; then
    mkdir -p "$sprig_ts"
    cp "$sprig_here/package.json" "$sprig_here/package-lock.json" "$sprig_ts/"
    (cd "$sprig_ts" && npm ci --ignore-scripts --no-audit --no-fund >&2)
  fi
  [ "$("$sprig_ts/node_modules/.bin/tsc" -v)" = "Version 5.9.3" ] || { echo "TypeScript 5.9.3 esperado em $sprig_ts" >&2; return 1; }

  local work="$sprig_root/artifacts/build/sprig-engine-work"
  rm -rf "$work" "$sprig_engine_dir"
  mkdir -p "$work" "$sprig_engine_dir"
  tar xzf "$tarball" -C "$work" --strip-components=1 \
    "sprig-$SPRIG_COMMIT/engine/src" "sprig-$SPRIG_COMMIT/engine/tsconfig.json" "sprig-$SPRIG_COMMIT/engine/package.json" \
    "sprig-$SPRIG_COMMIT/engine/LICENSE" "sprig-$SPRIG_COMMIT/LICENSE"
  (cd "$work/engine" && "$sprig_ts/node_modules/.bin/tsc" -p tsconfig.json --outDir "$sprig_engine_dir" \
    --incremental false --declaration false --declarationMap false --sourceMap false >&2)
  # Fonte do engine: o que o tsc leu, mais as licencas (o jogo vai a parte, em sprig_build).
  python3 -I "$sprig_here/pack-source.py" "$sprig_engine_dir.src.tar.gz" "$work" engine LICENSE
  mv "$sprig_engine_dir.src.tar.gz" "$sprig_root/artifacts/build/sprig-engine-${SPRIG_COMMIT:0:7}-src.tar.gz"
  cp "$work/LICENSE" "$sprig_root/artifacts/build/sprig-engine-${SPRIG_COMMIT:0:7}-LICENSE"
  rm -rf "$work"
}

sprig_build() {
  [ -d "$sprig_engine_dir" ] && [ -f "$sprig_root/artifacts/build/sprig-engine-${SPRIG_COMMIT:0:7}-src.tar.gz" ] || sprig_engine
  local tarball="$sprig_cache/sprig-${SPRIG_COMMIT:0:7}.tar.gz"
  local out="$sprig_root/artifacts/build/sprig-$SLUG"
  rm -rf "$out"
  mkdir -p "$out"
  tar xzf "$tarball" -C "$out" --strip-components=2 "sprig-$SPRIG_COMMIT/games/$GAME_FILE"
  node "$sprig_here/wrap-game.mjs" "$out/$GAME_FILE" "$out/game.js"
  sed -e "s|@TITLE@|$TITLE|g" "$sprig_here/index.html.in" > "$out/index.html"

  local eng="$sprig_root/artifacts/build/sprig-engine-${SPRIG_COMMIT:0:7}"
  echo "# Cole em bundle.yaml (web.files e sources):"
  echo "index.html $(shasum -a 256 < "$out/index.html" | cut -c1-64)"
  echo "game.js $(shasum -a 256 < "$out/game.js" | cut -c1-64)"
  echo "$GAME_FILE $(shasum -a 256 < "$out/$GAME_FILE" | cut -c1-64)"
  (cd "$eng" && find . -name '*.js' | sed 's|^\./||' | sort | while read -r f; do echo "engine/$f $(shasum -a 256 < "$f" | cut -c1-64)"; done)
  echo "engine-src.tar.gz $(shasum -a 256 < "$sprig_root/artifacts/build/sprig-engine-${SPRIG_COMMIT:0:7}-src.tar.gz" | cut -c1-64)"
}