#!/bin/sh

set -x
set -e

brew update && brew install ncurses s3cmd

ZIGDIR="$(pwd)"

HOST_ARCH="x86_64"
HOST_TARGET="$HOST_ARCH-macos-gnu"
HOST_MCPU="baseline"
HOST_CACHE_BASENAME="zig+llvm+lld+clang-$HOST_TARGET-0.9.1"
HOST_PREFIX="$HOME/$HOST_CACHE_BASENAME"

ARCH="aarch64"
TARGET="$ARCH-macos-gnu"
MCPU="apple_a14"
CACHE_BASENAME="zig+llvm+lld+clang-$TARGET-0.9.1"
PREFIX="$HOME/$CACHE_BASENAME"

JOBS="-j2"

rm -rf $HOST_PREFIX $PREFIX
cd $HOME

wget -nv "https://ziglang.org/deps/$HOST_CACHE_BASENAME.tar.xz"
wget -nv "https://ziglang.org/deps/$CACHE_BASENAME.tar.xz"
tar xf "$HOST_CACHE_BASENAME.tar.xz"
tar xf "$CACHE_BASENAME.tar.xz"

cd $ZIGDIR

# Make the `zig version` number consistent.
# This will affect the cmake command below.
git config core.abbrev 9
git fetch --unshallow || true
git fetch --tags

# Build host zig compiler in debug so that we can get the
# current version when packaging

ZIG="$HOST_PREFIX/bin/zig"

export CC="$ZIG cc -target $HOST_TARGET -mcpu=$HOST_MCPU"
export CXX="$ZIG c++ -target $HOST_TARGET -mcpu=$HOST_MCPU"

mkdir build.host
cd build.host
cmake .. \
  -DCMAKE_INSTALL_PREFIX="$(pwd)/release" \
  -DCMAKE_PREFIX_PATH="$HOST_PREFIX" \
  -DCMAKE_BUILD_TYPE=Release \
  -DZIG_TARGET_TRIPLE="$HOST_TARGET" \
  -DZIG_TARGET_MCPU="$HOST_MCPU" \
  -DZIG_STATIC=ON \
  -DZIG_OMIT_STAGE2=ON

unset CC
unset CXX

make $JOBS install

# Build zig compiler cross-compiled for arm64
cd $ZIGDIR

ZIG="$ZIGDIR/build.host/release/bin/zig"

export CC="$ZIG cc -target $TARGET -mcpu=$MCPU"
export CXX="$ZIG c++ -target $TARGET -mcpu=$MCPU"

mkdir build
cd build
cmake .. \
  -DCMAKE_INSTALL_PREFIX="$(pwd)/release" \
  -DCMAKE_PREFIX_PATH="$PREFIX" \
  -DCMAKE_BUILD_TYPE=Release \
  -DZIG_TARGET_TRIPLE="$TARGET" \
  -DZIG_TARGET_MCPU="$MCPU" \
  -DZIG_EXECUTABLE="$ZIG" \
  -DZIG_STATIC=ON

unset CC
unset CXX

make $JOBS install

if [ "${BUILD_REASON}" != "PullRequest" ]; then
  mv ../LICENSE release/

  # We do not run test suite but still need langref.
  mkdir -p release/docs
  $ZIG run ../doc/docgen.zig -- $ZIG ../doc/langref.html.in release/docs/langref.html

  # Produce the experimental std lib documentation.
  mkdir -p release/docs/std
  $ZIG test ../lib/std/std.zig \
    --zig-lib-dir ../lib \
    -femit-docs=release/docs/std \
    -fno-emit-bin

  mv release/bin/zig release/
  rmdir release/bin

  VERSION=$(../build.host/release/bin/zig version)
  DIRNAME="zig-macos-$ARCH-$VERSION"
  TARBALL="$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 "$JSONFILE" "s3://ziglang.org/builds/$ARCH-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