#!/bin/sh

set -x
set -e

system_profiler SPHardwareDataType

brew install s3cmd gcc@8

ZIGDIR="$(pwd)"
CACHE_BASENAME="llvm+clang-9.0.0-macos-x86_64-gcc8-release"
PREFIX="$HOME/$CACHE_BASENAME"
TMPDIR="$HOME/tmpz"
JOBS="-j2"

# I tried using the system default compiler (clang), but it couldn't statically link libc++.
# So we use gcc-8 from homebrew.
export CC=gcc-8
export CXX=g++-8

rm -rf $PREFIX
rm -rf $TMPDIR
mkdir $TMPDIR

cd $HOME
HAVE_CACHE="true"
wget -nv "https://ziglang.org/builds/$CACHE_BASENAME.tar.xz" || HAVE_CACHE="false"
if [ "${HAVE_CACHE}" = "true" ]; then
  tar xf "$CACHE_BASENAME.tar.xz"
else
  if [ "${BUILD_REASON}" == "PullRequest" ]; then
      echo "Need cached llvm+clang for pull request builds."
      exit 1
  fi

  cd $TMPDIR
  wget https://zlib.net/zlib-1.2.11.tar.xz
  tar xf zlib-1.2.11.tar.xz
  cd zlib-1.2.11/
  mkdir build
  cd build
  cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH=$PREFIX -DCMAKE_INSTALL_PREFIX=$PREFIX
  make $JOBS install
  rm $PREFIX/lib/libz*dylib

  cd $TMPDIR
  wget https://releases.llvm.org/9.0.0/llvm-9.0.0.src.tar.xz
  tar xf llvm-9.0.0.src.tar.xz
  cd llvm-9.0.0.src/
  mkdir build
  cd build
  cmake .. -DCMAKE_INSTALL_PREFIX=$PREFIX -DCMAKE_PREFIX_PATH=$PREFIX -DCMAKE_BUILD_TYPE=Release -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="AVR" -DLLVM_ENABLE_LIBXML2=OFF -DLLVM_ENABLE_TERMINFO=OFF
  make $JOBS install

  cd $TMPDIR
  wget https://releases.llvm.org/9.0.0/cfe-9.0.0.src.tar.xz
  tar xf cfe-9.0.0.src.tar.xz
  cd cfe-9.0.0.src/
  mkdir build
  cd build
  cmake .. -DCMAKE_INSTALL_PREFIX=$PREFIX -DCMAKE_PREFIX_PATH=$PREFIX -DCMAKE_BUILD_TYPE=Release
  make $JOBS install

  cd $HOME
  tar cfJ "$CACHE_BASENAME.tar.xz" "$CACHE_BASENAME"
  cp "$DOWNLOADSECUREFILE_SECUREFILEPATH" "$HOME/.s3cfg"
  s3cmd put -P --add-header="cache-control: public, max-age=31536000, immutable" "$CACHE_BASENAME.tar.xz" "s3://ziglang.org/builds/$CACHE_BASENAME.tar.xz"
fi

# Make the `zig version` number consistent.
# This will affect the cmake command below.
git config core.abbrev 9

cd $ZIGDIR
mkdir build
cd build
cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_PREFIX_PATH=$PREFIX -DCMAKE_INSTALL_PREFIX=$(pwd)/release -DZIG_STATIC=ON
make $JOBS install
release/bin/zig build test

if [ "${BUILD_REASON}" != "PullRequest" ]; then
  mv ../LICENSE release/
  mv ../zig-cache/langref.html release/
  mv release/bin/zig release/
  rmdir release/bin

  VERSION=$(release/zig version)
  DIRNAME="zig-macos-x86_64-$VERSION"
  TARBALL="$DIRNAME.tar.xz"
  mv release "$DIRNAME"
  tar cfJ "$TARBALL" "$DIRNAME"

  mv "$DOWNLOADSECUREFILE_SECUREFILEPATH" "$HOME/.s3cfg"
  s3cmd put -P --add-header="cache-control: public, max-age=31536000, immutable" "$TARBALL" s3://ziglang.org/builds/

  SHASUM=$(shasum -a 256 $TARBALL | cut '-d ' -f1)
  BYTESIZE=$(wc -c < $TARBALL)

  JSONFILE="macos-$GITBRANCH.json"
  touch $JSONFILE
  echo "{\"tarball\": \"$TARBALL\"," >>$JSONFILE
  echo "\"shasum\": \"$SHASUM\"," >>$JSONFILE
  echo "\"size\": \"$BYTESIZE\"}" >>$JSONFILE

  s3cmd put -P --add-header="Cache-Control: max-age=0, must-revalidate" "$JSONFILE" "s3://ziglang.org/builds/$JSONFILE"
  s3cmd put -P "$JSONFILE" "s3://ziglang.org/builds/macos-$VERSION.json"

  # `set -x` causes these variables to be mangled.
  # See https://developercommunity.visualstudio.com/content/problem/375679/pipeline-variable-incorrectly-inserts-single-quote.html
  set +x
  echo "##vso[task.setvariable variable=tarball;isOutput=true]$TARBALL"
  echo "##vso[task.setvariable variable=shasum;isOutput=true]$SHASUM"
  echo "##vso[task.setvariable variable=bytesize;isOutput=true]$BYTESIZE"
fi