# 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://www.kernel.org/pub/linux/kernel/people/kdave/btrfs-progs/btrfs-progs-v${BPM_PKG_VERSION}.tar.xz"
FILENAME="${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() {
  ./configure --prefix=/usr --disable-static --disable-documentation
  make
}

# 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() {
  # Check commands taken from Arch Linux
  # remove all tests, which requires real root 
  rm -r $(dirname $(rg -t sh -l -e SUDO_HELPER -e mount -e prepare_test) | rg 'tests/')
  # prevent tests from calling function that performs 'modprobe btrfs' as this errors when not run as real root
  sed -i '/^check_kernel_support$/d' tests/*.sh
  # -j1 for running tests chronological
  make -j1 -C tests test
}


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

  # Install python bindings
  make DESTDIR="$BPM_OUTPUT" install_python

  # Install bash completion
  install -Dm644 btrfs-completion "$BPM_OUTPUT"/usr/share/bash-completion/completions/btrfs

  # Install documentation
  for i in 5 8; do
    mkdir -p "$BPM_OUTPUT"/usr/share/man/man$i
    install Documentation/*.$i "$BPM_OUTPUT"/usr/share/man/man$i
  done

  # Install package license
  install -Dm644 "$BPM_SOURCE"/COPYING "$BPM_OUTPUT"/usr/share/licenses/btrfs-progs/COPYING
}