#!/usr/bin/env bash
# Matcha9000 (WASM-4, de dosisod, GPL-3.0): o release 1.0.2 do autor (tag 1.0.2, commit 501a9bc, gerado pelo GitHub Actions do repositorio) so traz o HTML do "w4 bundle".
# O "w4 bundle --html" grava o cartucho em Z85 (WASM4_CART, WASM4_CART_SIZE no script wasm4-cart-json).
# Este script baixa o HTML conferido e tira o .wasm de dentro, sem mudar nada.
#
#   src/FredGames.Bundler/Builds/fetch-matcha9000.sh      # precisa de python3 >= 3.13 (base64.z85decode)
#
# Saida: artifacts/build/matcha9000/matcha9000.wasm

set -euo pipefail

HTML_SHA256=715d7f81b188ead6443664626eca9c32b454b1efd3ccce80c654b6585c3da935
CART_SHA256=471ec2f27a9c51a506bf541667dc50d26bf186dab19ca62e3041efcaf4c7e326

here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
root="$(git -C "$here" rev-parse --show-toplevel 2>/dev/null || pwd)"
out="$root/artifacts/build/matcha9000"
cache="$root/artifacts/build/cache"

mkdir -p "$out" "$cache"
html="$cache/matcha9000-1.0.2.html"
[ -f "$html" ] || curl -fsSL --retry 4 https://github.com/dosisod/matcha9000/releases/download/1.0.2/matcha9000.html -o "$html"
echo "$HTML_SHA256  $html" | shasum -a 256 -c -

python3 - "$html" "$out/matcha9000.wasm" <<'PY'
import base64, json, re, sys
page = open(sys.argv[1], encoding="utf-8").read()
m = re.search(r'<script[^>]*id="wasm4-cart-json"[^>]*>(.*?)</script>', page, re.S)
if not m:
    sys.exit("matcha9000-1.0.2.html: script wasm4-cart-json nao encontrado")
cart = json.loads(m.group(1))
data = base64.z85decode(cart["WASM4_CART"])[:cart["WASM4_CART_SIZE"]]
open(sys.argv[2], "wb").write(data)
PY
echo "$CART_SHA256  $out/matcha9000.wasm" | shasum -a 256 -c -