#!/usr/bin/env bash
# Compila o Space Trader Classic (porte web do Space Trader de Pieter Spronck, via versao Android de Russell Wolf; GPL-3.0-or-later)
# a partir do commit 919e11c de github.com/lunchwine/space-trader-classic: aplica space-trader-classic-fredygames.patch ao fonte
# (CSP que bloqueia qualquer requisicao externa; os dois links da caixa "About" viram texto) e roda o scripts/build.py do autor,
# que junta codigo, imagens e fontes num unico index.html. Sem o patch, o build.py reproduz byte a byte o index.html do repositorio.
#
#   src/FredGames.Bundler/Builds/build-space-trader-classic.sh
#
# Precisa so do python3. Saida: artifacts/build/space-trader-classic-919e11c/index.html (o bundle.yaml confere o SHA-256).
# Dois builds seguidos dao os mesmos bytes.

set -euo pipefail

COMMIT=919e11c3b2cd16f803ce84d16c2bdaf977ef7af7
SHA256=54e578069e455faf6f99314ad7f30ab71d87bd8db7eb111f31f70fc696e20393

here="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
root="$(git -C "$here" rev-parse --show-toplevel 2>/dev/null || pwd)"
out="$root/artifacts/build/space-trader-classic-${COMMIT:0:7}"
cache="$root/artifacts/build/cache"
tarball="space-trader-classic-${COMMIT:0:7}.tar.gz"

mkdir -p "$cache"
if [ ! -f "$cache/$tarball" ]; then
  curl -fsSL --retry 4 "https://github.com/lunchwine/space-trader-classic/archive/$COMMIT.tar.gz" -o "$cache/$tarball.partial" && mv "$cache/$tarball.partial" "$cache/$tarball"
fi
echo "$SHA256  $cache/$tarball" | shasum -a 256 -c -

rm -rf "$out"
mkdir -p "$out/tree"
tar -xzf "$cache/$tarball" -C "$out/tree" --strip-components 1
patch -s -p1 -d "$out/tree" < "$here/space-trader-classic/space-trader-classic-fredygames.patch"
(cd "$out/tree" && python3 -I scripts/build.py > "$out/build.log")
grep -q "Content-Security-Policy" "$out/tree/index.html"
! grep -q 'target="_blank"' "$out/tree/index.html"
cp "$out/tree/index.html" "$out/index.html"
rm -rf "$out/tree"
ls -l "$out/index.html"
shasum -a 256 "$out/index.html"