#!/bin/bash

# This script is to be used by the ci environment from the project root directory, do not use it from somewhere else.

# Compiles cockatrice inside of a ci environment
# --install runs make install
# --package [<package type>] runs make package, optionally force the type
# --suffix <suffix> renames package with this suffix, requires arg
# --server compiles servatrice
# --test runs tests
# --debug or --release sets the build type ie CMAKE_BUILD_TYPE
# --ccache [<size>] uses ccache and shows stats, optionally provide size
# --dir <dir> sets the name of the build dir, default is "build"
# --parallel <core count> sets how many cores cmake should build with in parallel
# uses env: BUILDTYPE MAKE_INSTALL MAKE_PACKAGE PACKAGE_TYPE PACKAGE_SUFFIX MAKE_SERVER MAKE_TEST USE_CCACHE CCACHE_SIZE BUILD_DIR PARALLEL_COUNT
# (correspond to args: --debug/--release --install --package <package type> --suffix <suffix> --server --test --ccache <ccache_size> --dir <dir> --parallel <core_count>)
# exitcode: 1 for failure, 3 for invalid arguments

# Read arguments
while [[ $# != 0 ]]; do
  case "$1" in
    '--')
      shift
      ;;
    '--install')
      MAKE_INSTALL=1
      shift
      ;;
    '--package')
      MAKE_PACKAGE=1
      shift
      if [[ $# != 0 && ${1:0:1} != - ]]; then
        PACKAGE_TYPE="$1"
        shift
      fi
      ;;
    '--suffix')
      shift
      if [[ $# == 0 ]]; then
        echo "::error file=$0::--suffix expects an argument"
        exit 3
      fi
      PACKAGE_SUFFIX="$1"
      shift
      ;;
    '--server')
      MAKE_SERVER=1
      shift
      ;;
    '--test')
      MAKE_TEST=1
      shift
      ;;
    '--debug')
      BUILDTYPE="Debug"
      shift
      ;;
    '--release')
      BUILDTYPE="Release"
      shift
      ;;
    '--ccache')
      USE_CCACHE=1
      shift
      if [[ $# != 0 && ${1:0:1} != - ]]; then
        CCACHE_SIZE="$1"
        shift
      fi
      ;;
    '--dir')
      shift
      if [[ $# == 0 ]]; then
        echo "::error file=$0::--dir expects an argument"
        exit 3
      fi
      BUILD_DIR="$1"
      shift
      ;;
    '--parallel')
      shift
      if [[ $# == 0 ]]; then
        echo "::error file=$0::--parallel expects an argument"
        exit 3
      fi
      PARALLEL_COUNT="$1"
      shift
      ;;
    *)
      echo "::error file=$0::unrecognized option: $1"
      exit 3
      ;;
  esac
done

set -e

# Setup
./servatrice/check_schema_version.sh
if [[ ! $BUILDTYPE ]]; then
  BUILDTYPE=Release
fi
if [[ ! $BUILD_DIR ]]; then
  BUILD_DIR="build"
fi
mkdir -p "$BUILD_DIR"
cd "$BUILD_DIR"

# Add cmake flags
flags=("-DCMAKE_BUILD_TYPE=$BUILDTYPE")
if [[ $MAKE_SERVER ]]; then
  flags+=("-DWITH_SERVER=1")
fi
if [[ $MAKE_TEST ]]; then
  flags+=("-DTEST=1")
fi
if [[ $USE_CCACHE ]]; then
  flags+=("-DUSE_CCACHE=1")
  if [[ $CCACHE_SIZE ]]; then
    # note, this setting persists after running the script
    ccache --max-size "$CCACHE_SIZE"
  fi
fi
if [[ $PACKAGE_TYPE ]]; then
  flags+=("-DCPACK_GENERATOR=$PACKAGE_TYPE")
fi

# Add cmake --build flags
buildflags=(--config "$BUILDTYPE")
if [[ $PARALLEL_COUNT ]]; then
  if [[ $(cmake --build /not_a_dir --parallel 2>&1 | head -1) =~ parallel ]]; then
    # workaround for bionic having an old cmake
    echo "this version of cmake does not support --parallel, using native build tool -j instead"
    buildflags+=(-- -j "$PARALLEL_COUNT")
    # note, no normal build flags should be added after this
  else
    buildflags+=(--parallel "$PARALLEL_COUNT")
  fi
fi

function ccachestatsverbose() {
  # note, verbose only works on newer ccache, discard the error
  local got
  if got="$(ccache --show-stats --verbose 2>/dev/null)"; then
    echo "$got"
  else
    ccache --show-stats
  fi
}

# Compile
if [[ $USE_CCACHE ]]; then
  echo "::group::Show ccache stats"
  ccachestatsverbose
  echo "::endgroup::"
fi

echo "::group::Configure cmake"
cmake --version
cmake .. "${flags[@]}"
echo "::endgroup::"

echo "::group::Build project"
if [[ $RUNNER_OS == Windows ]]; then
  # Enable MTT, see https://devblogs.microsoft.com/cppblog/improved-parallelism-in-msbuild/
  # and https://devblogs.microsoft.com/cppblog/cpp-build-throughput-investigation-and-tune-up/#multitooltask-mtt
  cmake --build . "${buildflags[@]}" -- -p:UseMultiToolTask=true
else
  cmake --build . "${buildflags[@]}"
fi
echo "::endgroup::"

if [[ $USE_CCACHE ]]; then
  echo "::group::Show ccache stats again"
  ccachestatsverbose
  echo "::endgroup::"
fi

if [[ $MAKE_TEST ]]; then
  echo "::group::Run tests"
  ctest -C "$BUILDTYPE" --output-on-failure
  echo "::endgroup::"
fi

if [[ $MAKE_INSTALL ]]; then
  echo "::group::Install"
  cmake --build . --target install --config "$BUILDTYPE"
  echo "::endgroup::"
fi

if [[ $MAKE_PACKAGE ]]; then
  echo "::group::Create package"
  cmake --build . --target package --config "$BUILDTYPE"
  echo "::endgroup::"

  if [[ $PACKAGE_SUFFIX ]]; then
    echo "::group::Update package name"
    cd ..
    BUILD_DIR="$BUILD_DIR" .ci/name_build.sh "$PACKAGE_SUFFIX"
    echo "::endgroup::"
  fi
fi