#!/bin/bash
# https://docs.sheetjs.com/docs/demos/engines/chakra

OS=$(uname -s)
ARCH=$(uname -m)

case "$OS" in
  Darwin|Linux) ;;
  *) echo "Unsupported OS: $OS"; exit 1 ;;
esac

case "$ARCH" in
  x86_64) ARCH="x64" ;;
  arm64|aarch64) ARCH="arm64" ;;
  *) echo "Unsupported architecture: $ARCH"; exit 1 ;;
esac

cd /tmp
rm -rf sheetjs-chakra
mkdir sheetjs-chakra
cd sheetjs-chakra

git clone https://github.com/chakra-core/ChakraCore.git
cd ChakraCore
git checkout 792ee76
cd ..

cd ChakraCore
case "$OS" in
  Darwin)
    BREW_PREFIX=$(brew --prefix)

    # Check for required commands
    if ! command -v cmake &> /dev/null; then
      echo "cmake not found. Please install cmake (e.g., brew install cmake)"
      exit 1
    fi
    if ! brew list icu4c &> /dev/null; then
      echo "icu4c not found. Please install icu4c (e.g., brew install icu4c)"
      exit 1
    fi

    if [ ! -d usr/local/opt ] && [ -d "${BREW_PREFIX}/opt/icu4c" ]; then
      mkdir -p usr/local/opt
      ln -sf "${BREW_PREFIX}/opt/icu4c" usr/local/opt/icu4c
    fi

    for f in CMakeLists.txt pal/CMakeLists.txt pal/src/CMakeLists.txt lib/wabt/CMakeLists.txt; do
      if [ -f "$f" ] && grep -q "cmake_minimum_required(VERSION 3.2)" "$f"; then
        sed -i '' 's/cmake_minimum_required(VERSION 3.2)/cmake_minimum_required(VERSION 4.0)/g' "$f"
      fi
    done

    if [ "$ARCH" = "arm64" ]; then
      if grep -q "^operator new(" lib/Common/Memory/Allocator.h 2>/dev/null; then
        sed -i '' ':a;N;$!ba;s/#ifndef __PLACEMENT_NEW_INLINE.*#endif/#include <new>/g' lib/Common/Memory/Allocator.h
      fi

      ./build.sh --static --no-icu --test-build -j=8 --no-jit
    else
      ./build.sh --static --icu=${BREW_PREFIX}/opt/icu4c/include --test-build -j=8 --system-icu --no-jit
    fi
    ;;

  Linux)
    # Check for required commands
    if ! command -v cmake &> /dev/null; then
      echo "cmake not found. Please install cmake (e.g., sudo apt-get install cmake or sudo pacman -S cmake)"
      exit 1
    fi
    if ! command -v clang++ &> /dev/null; then
      echo "clang++ not found. Please install clang (e.g., sudo apt-get install clang or sudo pacman -S clang)"
      exit 1
    fi

    ./build.sh --static --embed-icu --test-build -j=8 --no-jit
    ;;
esac
cd ..

curl -L -O https://docs.sheetjs.com/chakra/sheetjs.ch.cpp
curl -L -O https://docs.sheetjs.com/chakra/Makefile

if [[ "$OS" == "Darwin" && "$ARCH" == "x64" && ! -d /usr/local/opt/icu4c ]]; then
  sudo mkdir -p /usr/local/opt 2>/dev/null || true
  sudo ln -sf "${BREW_PREFIX}/opt/icu4c" /usr/local/opt 2>/dev/null || true
fi
make

curl -L -O https://cdn.sheetjs.com/xlsx-latest/package/dist/xlsx.full.min.js
curl -L -O https://docs.sheetjs.com/pres.numbers

./sheetjs.ch pres.numbers

cp ChakraCore/out/Test/ch .

node -e "fs.writeFileSync('payload.js', 'var payload = \"' + fs.readFileSync('pres.numbers').toString('base64') + '\";')"

cat >global.js <<'EOF'
var global = (function(){ return this; }).call(null);
EOF

cat >chakra.js <<'EOF'
var wb = XLSX.read(payload, {type:'base64'});
console.log(XLSX.utils.sheet_to_csv(wb.Sheets[wb.SheetNames[0]]));
EOF

cat global.js xlsx.full.min.js payload.js chakra.js > xlsx.chakra.js

./ch xlsx.chakra.js