#!/bin/sh

set -x
set -e

brew update && brew install s3cmd ninja gnu-tar

ZIGDIR="$(pwd)"
ARCH="aarch64"
# {product}-{os}{sdk_version}-{arch}-{llvm_version}-{cmake_build_type}
CACHE_HOST_BASENAME="ci-llvm-macos10.15-x86_64-12.0.0.1-release"
CACHE_ARM64_BASENAME="ci-llvm-macos11.0-arm64-12.0.0.1-release"
PREFIX_HOST="$HOME/$CACHE_HOST_BASENAME"
PREFIX_ARM64="$HOME/$CACHE_ARM64_BASENAME"
JOBS="-j2"

rm -rf $PREFIX
cd $HOME
wget -nv "https://ziglang.org/deps/$CACHE_HOST_BASENAME.tar.xz"
wget -nv "https://ziglang.org/deps/$CACHE_ARM64_BASENAME.tar.xz"

gtar xf "$CACHE_HOST_BASENAME.tar.xz"
gtar xf "$CACHE_ARM64_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

# Select xcode: latest version found on vmImage macOS-10.15 .
DEVELOPER_DIR=/Applications/Xcode_12.4.app

export ZIG_LOCAL_CACHE_DIR="$ZIGDIR/zig-cache"
export ZIG_GLOBAL_CACHE_DIR="$ZIGDIR/zig-cache"

# Build zig for host and use `Debug` type to make builds a little faster.

cd $ZIGDIR
mkdir build.host
cd build.host
cmake -G "Ninja" .. \
  -DCMAKE_INSTALL_PREFIX="$(pwd)/release" \
  -DCMAKE_PREFIX_PATH="$PREFIX_HOST" \
  -DCMAKE_BUILD_TYPE="Debug" \
  -DZIG_STATIC="OFF"

# Build but do not install.
ninja $JOBS

ZIG_EXE="$ZIGDIR/build.host/zig"

# Build zig for arm64 target.
# - use `Release` type for published tarballs
# - ad-hoc codesign with linker
# - note: apple quarantine of downloads (eg. via safari) still apply

cd $ZIGDIR
mkdir build.arm64
cd build.arm64
cmake -G "Ninja" .. \
  -DCMAKE_INSTALL_PREFIX="$(pwd)/release" \
  -DCMAKE_PREFIX_PATH="$PREFIX_ARM64" \
  -DCMAKE_BUILD_TYPE="Release" \
  -DCMAKE_CROSSCOMPILING="True" \
  -DCMAKE_SYSTEM_NAME="Darwin" \
  -DCMAKE_C_FLAGS="-arch arm64" \
  -DCMAKE_CXX_FLAGS="-arch arm64" \
  -DCMAKE_EXE_LINKER_FLAGS="-lz -Xlinker -adhoc_codesign" \
  -DZIG_USE_LLVM_CONFIG="OFF" \
  -DZIG_EXECUTABLE="$ZIG_EXE" \
  -DZIG_TARGET_TRIPLE="${ARCH}-macos" \
  -DZIG_STATIC="OFF"

ninja $JOBS install

# Disable test because binary is foreign arch.
#release/bin/zig build test

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

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

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

  # Remove the unnecessary bin dir in $prefix/bin/zig
  mv release/bin/zig release/
  rmdir release/bin

  # Remove the unnecessary zig dir in $prefix/lib/zig/std/std.zig
  mv release/lib/zig release/lib2
  rmdir release/lib
  mv release/lib2 release/lib

  VERSION=$($ZIG_EXE version)
  DIRNAME="zig-macos-$ARCH-$VERSION"
  TARBALL="$DIRNAME.tar.xz"
  gtar cJf "$TARBALL" release/ --owner=root --sort=name --transform="s,^release,${DIRNAME},"
  ln "$TARBALL" "$BUILD_ARTIFACTSTAGINGDIRECTORY/."

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