# 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/linux-pam/linux-pam/releases/download/v${BPM_PKG_VERSION}/Linux-PAM-${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() {
  mkdir build
  cd build

  meson setup --prefix=/usr       \
              --buildtype=release \
              -Ddocdir=/usr/share/doc/Linux-PAM ..
  meson compile
}

# 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() {
  cd build

  meson test
}

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

  # Set uid for unix_chkpwd
  chmod +s "$BPM_OUTPUT"/usr/sbin/unix_chkpwd

  # Install pam configuration files
  install -d "$BPM_OUTPUT"/etc/pam.d/
  install -m644 "$BPM_WORKDIR"/system-account "$BPM_OUTPUT"/etc/pam.d/system-account
  install -m644 "$BPM_WORKDIR"/system-auth "$BPM_OUTPUT"/etc/pam.d/system-auth
  install -m644 "$BPM_WORKDIR"/system-session "$BPM_OUTPUT"/etc/pam.d/system-session
  install -m644 "$BPM_WORKDIR"/system-password "$BPM_OUTPUT"/etc/pam.d/system-password
  install -m644 "$BPM_WORKDIR"/other "$BPM_OUTPUT"/etc/pam.d/other

  # Remove systemd services
  rm -r "$BPM_OUTPUT"/usr/lib/systemd

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