#!/usr/bin/env bash
# Compila o Pinch Points (Arnaud Gourlay; Rust + Bevy 0.20; Apache-2.0) para WebAssembly, no commit 0dc2ab5. O jogo e
# feito para o desktop (LAN, arquivos, linha de comando, area de transferencia), e esta build e um port para o navegador:
# pinch-points/browser-build.patch (publicado junto) faz so o que o navegador exige, sem mexer nas regras do jogo:
#   - sem o crate ureq (a busca de versao nova no GitHub) e sem a feature system_clipboard do Bevy; Cargo.lock podado
#   - relogio: web-time no lugar de std::time (que dispara panico no wasm)
#   - "arquivos" do jogador (configuracoes, progresso, trofeus): o localStorage da pagina, no lugar do disco
#   - menu sem "Replay" (biblioteca de rodadas, que precisa de disco) e sem "Beach lobby" (rede local); Esc nao sai do jogo
#   - sem thread: a verificacao do editor roda na hora e a animacao de destaque (GIF) nao e gerada
#   - os niveis do editor (pasta custom) tambem ficam no localStorage, e o jogo abre com a janela (fullscreen desligado)
#   - WebGL2: o struct Globals do water.wgsl ganha o preenchimento de 16 bytes, e a imagem de pre-visualizacao dos mapas
#     e criada direto em sRGB (WebGL2 nao tem formatos de view)
#   - o canvas ocupa o quadro (fit_canvas_to_parent) e os textos da barra do menu perdem "colar codigo" e "sair"
# Toolchain: Rust 1.99.1 (o Bevy 0.20.1 pede 1.97.1 ou mais), wasm-bindgen 0.2.130 (a versao do Cargo.lock), binaryen 133.
# A pagina (pinch-points/index.html, start.js) e nossa: baixa o .wasm comprimido em gzip (o CloudFront nao comprime
# acima de 10 MB), descomprime no navegador, e so inicia depois de um clique (audio).
#
#   src/FredGames.Bundler/Builds/build-pinch-points.sh
#
# Saida: artifacts/build/pinch-points/{dist/, pinch-points-<commit>-dist.tar.gz, pinch-points-licenses.txt}. O .tar.gz tem
# que sair igual em dois builds seguidos (perfil release do jogo: lto fat, codegen-units 1, strip; caminhos remapeados).

set -euo pipefail

here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
root="$(git -C "$here" rev-parse --show-toplevel 2>/dev/null || pwd)"
cache="$root/artifacts/build/cache"
tools="$root/artifacts/tools"
mkdir -p "$cache"

export RUSTUP_HOME="$tools/rustup" CARGO_HOME="$tools/cargo"
export PATH="$CARGO_HOME/bin:$PATH"
TOOLCHAIN=1.99.1
COMMIT=0dc2ab5bcd5f8abc6cc719116508c160031225d7
SHA256=f63420a319aec9d5089ed786467e7fa04e4cdafe8c049a356e19c07c298028d1
WB=0.2.130
WB_SHA=b90ddb9357f584b1af897d58ad77e4cce2b48fc17e2a967bc249a87f72809444
BINARYEN=133
BINARYEN_SHA=ad66da82ac13f163e424b1643f16c6dfcccc98b5966296b43e52d3cab04f84a8

fetch() { # url arquivo sha256
  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 - >/dev/null
}
untar() { # arquivo destino
  if [ ! -d "$2" ]; then
    rm -rf "$2.tmp"; mkdir -p "$2.tmp"; tar -xzf "$1" -C "$2.tmp" --strip-components 1; mv "$2.tmp" "$2"
  fi
}

slug=pinch-points
out="$root/artifacts/build/$slug" tree="$root/artifacts/build/$slug/tree"
fetch "https://github.com/agourlay/pinch-points/archive/$COMMIT.tar.gz" "$slug-${COMMIT:0:7}.tar.gz" "$SHA256"
fetch "https://github.com/wasm-bindgen/wasm-bindgen/releases/download/$WB/wasm-bindgen-$WB-aarch64-apple-darwin.tar.gz" \
  "wasm-bindgen-$WB-aarch64-apple-darwin.tar.gz" "$WB_SHA"
fetch "https://github.com/WebAssembly/binaryen/releases/download/version_$BINARYEN/binaryen-version_$BINARYEN-arm64-macos.tar.gz" \
  "binaryen-version_$BINARYEN-arm64-macos.tar.gz" "$BINARYEN_SHA"
untar "$cache/wasm-bindgen-$WB-aarch64-apple-darwin.tar.gz" "$tools/wasm-bindgen-$WB"
untar "$cache/binaryen-version_$BINARYEN-arm64-macos.tar.gz" "$tools/binaryen-version_$BINARYEN"
rustup toolchain install "$TOOLCHAIN" --profile minimal --target wasm32-unknown-unknown >/dev/null 2>&1
export RUSTUP_TOOLCHAIN="$TOOLCHAIN"

rm -rf "$out"; mkdir -p "$tree" "$out/dist" "$out/wb"
tar -xzf "$cache/$slug-${COMMIT:0:7}.tar.gz" -C "$tree" --strip-components 1

( cd "$tree"
  patch -p1 < "$here/pinch-points/browser-build.patch" >/dev/null
  CARGO_INCREMENTAL=0 RUSTFLAGS="--remap-path-prefix=$tree=/src --remap-path-prefix=$CARGO_HOME=/cargo" \
    cargo build --locked --release --target wasm32-unknown-unknown --bin pinch-points 2> "$out/cargo.log" \
    || { tail -40 "$out/cargo.log"; exit 1; }
  "$tools/wasm-bindgen-$WB/wasm-bindgen" --out-name pinch-points --out-dir "$out/wb" --target web --no-typescript \
    target/wasm32-unknown-unknown/release/pinch-points.wasm
  "$tools/binaryen-version_$BINARYEN/bin/wasm-opt" -O2 --enable-bulk-memory --enable-nontrapping-float-to-int \
    --enable-sign-ext --enable-mutable-globals --enable-simd --enable-reference-types --strip-debug --strip-producers \
    --output "$out/wb/opt.wasm" "$out/wb/pinch-points_bg.wasm"
  gzip -9n -c "$out/wb/opt.wasm" > "$out/dist/pinch-points_bg.wasm.gz"
  cp "$out/wb/pinch-points.js" "$out/dist/"
  cargo metadata --locked --format-version 1 --filter-platform wasm32-unknown-unknown 2>/dev/null > "$out/metadata.json"
  python3 -I "$here/gridbugs/rust-licenses.py" pinch-points "$out/crates.txt" < "$out/metadata.json" )
cp "$here/pinch-points/index.html" "$here/pinch-points/start.js" "$out/dist/"

{
  echo "Pinch Points - licences of the build"
  echo "===================================="
  echo
  echo "Source: https://github.com/agourlay/pinch-points at commit $COMMIT, licensed under the Apache License 2.0 (file LICENSE)."
  echo "The game's pictures and sounds are generated by scripts in the repository (tools/); its fonts are DejaVu Sans Mono,"
  echo "Nunito and a subset of Noto Sans Mono CJK JP, each with the licence file the repository keeps next to it."
  echo
  for f in LICENSE assets/fonts/DejaVu-LICENSE assets/fonts/Nunito-LICENSE assets/fonts/NotoSansCJK-LICENSE; do
    echo "------------------------------------------------------------------------"
    echo "$f"
    echo "------------------------------------------------------------------------"
    cat "$tree/$f"; echo
  done
  echo "========================================================================"
  cat "$out/crates.txt"
} > "$out/$slug-licenses.txt"

find "$out/dist" -exec touch -t 202511010000 {} +
( cd "$out" && find dist -type f | LC_ALL=C sort > files.txt \
  && COPYFILE_DISABLE=1 tar --format=ustar --uid 0 --gid 0 --uname root --gname root -n -cf - -T files.txt \
  | gzip -n -9 > "$slug-${COMMIT:0:7}-dist.tar.gz" && rm files.txt )
rm -rf "$tree" "$out/metadata.json" "$out/wb"
ls -l "$out/$slug-${COMMIT:0:7}-dist.tar.gz"
shasum -a 256 "$out/$slug-${COMMIT:0:7}-dist.tar.gz" "$out/$slug-licenses.txt" "$out/dist/pinch-points_bg.wasm.gz"