#!/bin/bash
#
# Copyright 2019 The Abseil Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

set -euox pipefail

if [[ -z ${ABSEIL_ROOT:-} ]]; then
  ABSEIL_ROOT="$(realpath $(dirname ${0})/..)"
fi

source "${ABSEIL_ROOT}/ci/cmake_common.sh"

# Avoid depending on GitHub by looking for a cached copy of GoogleTest.
if [[ -r "${KOKORO_GFILE_DIR:-}/distdir/googletest-${ABSL_GOOGLETEST_VERSION}.tar.gz" ]]; then
  ABSL_GOOGLETEST_DOWNLOAD_URL="file:///distdir/googletest-${ABSL_GOOGLETEST_VERSION}.tar.gz"
  DOCKER_EXTRA_ARGS="--mount type=bind,source=${KOKORO_GFILE_DIR}/distdir,target=/distdir,readonly ${DOCKER_EXTRA_ARGS:-}"
fi

if [[ -z ${ABSL_CMAKE_CXX_STANDARDS:-} ]]; then
  ABSL_CMAKE_CXX_STANDARDS="17"
fi

if [[ -z ${ABSL_CMAKE_BUILD_TYPES:-} ]]; then
  ABSL_CMAKE_BUILD_TYPES="Debug Release"
fi

if [[ -z ${ABSL_CMAKE_BUILD_SHARED:-} ]]; then
  ABSL_CMAKE_BUILD_SHARED="OFF ON"
fi

if [[ -z ${ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS:-} ]]; then
  ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS="OFF ON"
fi

source "${ABSEIL_ROOT}/ci/linux_docker_containers.sh"
readonly DOCKER_CONTAINER=${LINUX_ALPINE_CONTAINER}

for std in ${ABSL_CMAKE_CXX_STANDARDS}; do
  for compilation_mode in ${ABSL_CMAKE_BUILD_TYPES}; do
    for build_shared in ${ABSL_CMAKE_BUILD_SHARED}; do
      if [[ $build_shared == "OFF" ]]; then
        monolithic_shared_options="OFF"
      else
        monolithic_shared_options="$ABSL_CMAKE_BUILD_MONOLITHIC_SHARED_LIBS"
      fi

      for monolithic_shared in $monolithic_shared_options; do
        time docker run \
          --mount type=bind,source="${ABSEIL_ROOT}",target=/abseil-cpp,readonly \
          --tmpfs=/buildfs:exec \
          --workdir=/buildfs \
          --cap-add=SYS_PTRACE \
          --rm \
          -e CFLAGS="-Werror" \
          -e CXXFLAGS="-Werror" \
          ${DOCKER_EXTRA_ARGS:-} \
          "${DOCKER_CONTAINER}" \
          /bin/sh -c "
            cmake /abseil-cpp \
              -DABSL_GOOGLETEST_DOWNLOAD_URL=${ABSL_GOOGLETEST_DOWNLOAD_URL} \
              -DBUILD_SHARED_LIBS=${build_shared} \
              -DABSL_BUILD_TESTING=ON \
              -DCMAKE_BUILD_TYPE=${compilation_mode} \
              -DCMAKE_CXX_STANDARD=${std} \
              -DABSL_BUILD_MONOLITHIC_SHARED_LIBS=${monolithic_shared} \
              -DCMAKE_MODULE_LINKER_FLAGS=\"-Wl,--no-undefined\" && \
            make -j$(nproc) && \
            TZDIR=/abseil-cpp/absl/time/internal/cctz/testdata/zoneinfo \
            ctest -j$(nproc) --output-on-failure"
        done
    done
  done
done