#!/bin/sh

set -x
set -e

sudo apt-get update -q
sudo apt-get install -y cmake s3cmd tidy

ZIGDIR="$(pwd)"
ARCH="$(uname -m)"
TARGET="$ARCH-linux-musl"
CACHE_BASENAME="zig+llvm+lld+clang-$TARGET-0.8.0-dev.2703+c12704a33"
PREFIX="$HOME/$CACHE_BASENAME"
MCPU="baseline"
JOBS="-j$(nproc)"

rm -rf $PREFIX
cd $HOME

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

QEMUBASE="qemu-linux-x86_64-5.2.0.1"
wget -nv "https://ziglang.org/deps/$QEMUBASE.tar.xz"
tar xf "$QEMUBASE.tar.xz"
export PATH="$(pwd)/$QEMUBASE/bin:$PATH"

WASMTIME="wasmtime-v0.26.1-x86_64-linux"
wget -nv "https://github.com/bytecodealliance/wasmtime/releases/download/v0.26.1/$WASMTIME.tar.xz"
tar xf "$WASMTIME.tar.xz"
export PATH="$(pwd)/$WASMTIME:$PATH"

ZIG="$PREFIX/bin/zig"
export CC="$ZIG cc -target $TARGET -mcpu=$MCPU"
export CXX="$ZIG c++ -target $TARGET -mcpu=$MCPU"

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

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_STATIC=ON

# Now cmake will use zig as the C/C++ compiler. We reset the environment variables
# so that installation and testing do not get affected by them.
unset CC
unset CXX

make $JOBS install

# Look for non-conforming code formatting.
# Formatting errors can be fixed by running `zig fmt` on the files printed here.
release/bin/zig fmt --check ..

# Here we rebuild zig but this time using the Zig binary we just now produced to
# build zig1.o rather than relying on the one built with stage0. See
# https://github.com/ziglang/zig/issues/6830 for more details.
cmake .. -DZIG_EXECUTABLE="$(pwd)/release/bin/zig"
make $JOBS install

release/bin/zig test ../test/behavior.zig -fno-stage1 -fLLVM -I ../test

release/bin/zig build test-toolchain -Denable-qemu -Denable-wasmtime
release/bin/zig build test-std       -Denable-qemu -Denable-wasmtime
release/bin/zig build docs           -Denable-qemu -Denable-wasmtime

# Look for HTML errors.
tidy -qe ../zig-cache/langref.html

if [ "${BUILD_REASON}" != "PullRequest" ]; then
  # Produce the experimental std lib documentation.
  mkdir -p release/docs/std
  release/bin/zig test ../lib/std/std.zig \
    --zig-lib-dir ../lib \
    -femit-docs=release/docs/std \
    -fno-emit-bin

  mv ../LICENSE release/
  mv ../zig-cache/langref.html release/docs/

  # 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=$(release/zig version)
  DIRNAME="zig-linux-$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=$(sha256sum $TARBALL | cut '-d ' -f1)
  BYTESIZE=$(wc -c < $TARBALL)

  JSONFILE="linux-$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-linux-$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]$BYTESIZE"
  echo "##vso[task.setvariable variable=version;isOutput=true]$VERSION"
fi