# 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/asciidoctor/asciidoctor/archive/v${BPM_PKG_VERSION}/asciidoctor-${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() {
  gem build asciidoctor.gemspec
}

# The package function is executed in the source directory
# This function is used to move the compiled files into the output directory
package() {
  # Get ruby gem directory
  GEMDIR=$(ruby -e 'puts Gem.default_dir')

  gem install --ignore-dependencies --no-user-install --verbose -i "$BPM_OUTPUT"/"$GEMDIR" -n "$BPM_OUTPUT"/usr/bin asciidoctor-${BPM_PKG_VERSION}.gem

  # Remove cached gem file
  rm "$BPM_OUTPUT"/"$GEMDIR"/cache/asciidoctor-${BPM_PKG_VERSION}.gem

  # Install man page
  install -Dm644 "$BPM_OUTPUT"/"$GEMDIR"/gems/asciidoctor-${BPM_PKG_VERSION}/man/asciidoctor.1 "$BPM_OUTPUT"/usr/share/man/man1/asciidoctor.1

  # Install package license
  install -Dm644 "$BPM_OUTPUT"/"$GEMDIR"/gems/asciidoctor-${BPM_PKG_VERSION}/LICENSE "$BPM_OUTPUT"/usr/share/licenses/asciidoctor/LICENSE
}