#!/usr/bin/env bash
# Compila o Clean Line (puzzle de trilhos e lixo de Jesus Gonzalez, Ludum Dare 58; zlib; fonte Kenney Pixel, CC0;
# macroquad 0.4.14, MIT ou Apache-2.0) em WebAssembly, a partir do commit 6b3d800 de github.com/jesusmgg/train-ld58,
# como o README do autor: "cargo build --release --target wasm32-unknown-unknown" (Cargo.lock dele, "--locked",
# Rust 1.92.0 de artifacts/tools). Ele nao precisa de wasm-bindgen: o macroquad roda com o mq_js_bundle.js do proprio
# crate (js/mq_js_bundle.js, a mesma versao do macroquad). A pagina (clean-line/index.html) e nossa; o codigo do jogo nao
# e alterado. As imagens estao no Git LFS do autor (o tarball so traz ponteiros): clean-line/lfs-fetch.py baixa os
# objetos reais da API LFS dele e confere o sha256 de cada um.
#
#   src/FredGames.Bundler/Builds/build-clean-line.sh
#
# Saida: artifacts/build/clean-line-6b3d800/{dist/,clean-line-6b3d800-dist.tar.gz,licenses.txt}; o .tar.gz
# (pasta dist/) tem que sair igual em dois builds seguidos.

set -euo pipefail

COMMIT=6b3d8004afe4738a9a091ca4eeec6bdbf1a8966b
SHA256=6c7dcee0b86955789393e2ff584c86079dcea752d0bf76a5892aa4000915237d
TOOLCHAIN=1.92.0

here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
root="$(git -C "$here" rev-parse --show-toplevel 2>/dev/null || pwd)"
out="$root/artifacts/build/clean-line-${COMMIT:0:7}"
cache="$root/artifacts/build/cache"
tools="$root/artifacts/tools"
export RUSTUP_HOME="$tools/rustup" CARGO_HOME="$tools/cargo"
export PATH="$CARGO_HOME/bin:$PATH"

mkdir -p "$cache"
if [ ! -f "$cache/clean-line-${COMMIT:0:7}.tar.gz" ]; then
  curl -fsSL --retry 4 "https://github.com/jesusmgg/train-ld58/archive/$COMMIT.tar.gz" -o "$cache/clean-line-${COMMIT:0:7}.tar.gz.partial"
  mv "$cache/clean-line-${COMMIT:0:7}.tar.gz.partial" "$cache/clean-line-${COMMIT:0:7}.tar.gz"
fi
echo "$SHA256  $cache/clean-line-${COMMIT:0:7}.tar.gz" | shasum -a 256 -c -

rustup toolchain install "$TOOLCHAIN" --profile minimal --target wasm32-unknown-unknown >/dev/null 2>&1
export RUSTUP_TOOLCHAIN="$TOOLCHAIN"

rm -rf "$out"; mkdir -p "$out/tree" "$out/dist"
tar -xzf "$cache/clean-line-${COMMIT:0:7}.tar.gz" -C "$out/tree" --strip-components 1
tree="$out/tree"
# As imagens (assets/**/*.png) estao no Git LFS do autor: o tarball so traz ponteiros. lfs-fetch.py baixa os objetos
# da API LFS do repositorio dele e confere o sha256 de cada um (o oid do ponteiro).
python3 -I "$here/clean-line/lfs-fetch.py" jesusmgg/train-ld58 "$tree/assets"

( cd "$tree"
  CARGO_INCREMENTAL=0 CARGO_PROFILE_RELEASE_CODEGEN_UNITS=1 \
  RUSTFLAGS="--remap-path-prefix=$tree=/src --remap-path-prefix=$CARGO_HOME=/cargo" \
    cargo build --locked --release --target wasm32-unknown-unknown 2> "$out/cargo.log" \
    || { tail -40 "$out/cargo.log"; exit 1; }
  cargo metadata --locked --format-version 1 --filter-platform wasm32-unknown-unknown 2>/dev/null \
    | python3 -I "$here/gridbugs/rust-licenses.py" clean_line "$out/crates.txt" )

# O mq_js_bundle.js e o que o proprio macroquad 0.4.14 publica (js/ do crate, conferido pelo sha256); o do template do
# jogo e outra versao do arquivo, que da "register_plugin is not defined" no modo estrito.
MQ_JS_SHA256=f4189c03de0b10cef3b710bdcadb22df7b835ccab5de52a3714e896e4fc48cd7
mq_js="$(ls "$CARGO_HOME"/registry/src/*/macroquad-0.4.14/js/mq_js_bundle.js)"
echo "$MQ_JS_SHA256  $mq_js" | shasum -a 256 -c -
cp "$tree/target/wasm32-unknown-unknown/release/clean_line.wasm" "$mq_js" "$out/dist/"
cp "$here/clean-line/index.html" "$out/dist/index.html"
cp -R "$tree/assets" "$out/dist/assets"

{
  echo "== Clean Line (LICENSE do repositorio, zlib)"
  cat "$tree/LICENSE"
  echo
  echo "== CREDITS.md do repositorio"
  cat "$tree/CREDITS.md"
  echo
  echo "========================================================================"
  cat "$out/crates.txt"
} > "$out/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 > "clean-line-${COMMIT:0:7}-dist.tar.gz" && rm files.txt )
rm -rf "$tree"
ls -l "$out/clean-line-${COMMIT:0:7}-dist.tar.gz"
shasum -a 256 "$out/clean-line-${COMMIT:0:7}-dist.tar.gz" "$out/licenses.txt"