# This is the source.sh script. It is executed by BPM in a temporary directory when compiling a source package
# BPM Expects the source code to be extracted into the automatically created 'source' directory which can be accessed using $BPM_SOURCE
# BPM Expects the output files to be present in the automatically created 'output' directory which can be accessed using $BPM_OUTPUT

DOWNLOAD="https://github.com/protocolbuffers/protobuf/archive/refs/tags/v${BPM_PKG_VERSION}.tar.gz"
FILENAME="${DOWNLOAD##*/}"

# The prepare function is executed in the root of the temp directory
# This function is used for downloading files and putting them into the correct location
prepare() {
  wget "$DOWNLOAD"
  tar -xvf "$FILENAME" --strip-components=1 -C "$BPM_SOURCE"
}

# The build function is executed in the source directory
# This function is used to compile the source code
build() {
  cmake -B build -DCMAKE_INSTALL_PREFIX=/usr -Dprotobuf_BUILD_SHARED_LIBS=ON -Dprotobuf_USE_EXTERNAL_GTEST=ON -Dprotobuf_ABSL_PROVIDER=package -Wno-dev
  cmake --build build
}

# The check function is executed in the source directory
# This function is used to run tests to verify the package has been compiled correctly
check() {
  ctest --test-dir build
}

# The package function is executed in the source directory
# This function is used to move the compiled files into the output directory
package() {
  DESTDIR="$BPM_OUTPUT" cmake --install build

  install -Dm644 "$BPM_SOURCE"/editors/protobuf-mode.el -t "$BPM_OUTPUT/usr/share/emacs/site-lisp/protobuf-mode.el"
  install -Dm644 "$BPM_SOURCE"/editors/proto.vim -t "$BPM_OUTPUT/usr/share/vim/vimfiles/syntax/proto.vim"

  # Install package license
  install -Dm644 "$BPM_SOURCE"/LICENSE "$BPM_OUTPUT"/usr/share/licenses/protobuf-compiler/LICENSE  
  
}