# This is the recipe.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

# The prepare function is executed in the root of the temp directory
# This function is used for putting downloaded files to the correct location or applying patches
prepare() {
  cd "$BPM_SOURCE"
  install -Dm644 "$BPM_WORKDIR"/Makefile Local/Makefile
}

# The build function is executed in the source directory
# This function is used to compile the source code
build() {
  make
}

# The package function is executed in the source directory
# This function is used to move the compiled files into the output directory
package() {
  local BINS=(
    exicyclog
    exigrep
    exim
    exim_checkaccess
    exim_dbmbuild
    exim_dumpdb
    exim_fixdb
    exim_id_update
    exim_lock
    exim_msgdate
    exim_tidydb
    eximstats
    exinext
    exipick
    exiqgrep
    exiqsumm
    exiwhat
  )

  pushd build-Linux-"${BPM_PKG_ARCH}"
  install -Dm755 ${BINS[@]} -t "$BPM_OUTPUT"/usr/sbin/
  chmod u+s "$BPM_OUTPUT"/usr/sbin/exim
  for i in mailq newaliases rmail rsmtp runq sendmail; do
    ln -sf exim "$BPM_OUTPUT"/usr/sbin/"$i"
  done
  popd

  # Install documentation
  install -Dm644 doc/exim.8 "$BPM_OUTPUT"/usr/share/man/man8/exim.8

  # Install configuration file
  install -Dm644 "$BPM_WORKDIR"/aliases "$BPM_OUTPUT"/etc/mail/aliases
  sed -e "s#/etc/aliases#/etc/mail/aliases#g" \
      -e "s#SYSTEM_ALIASES_FILE#/etc/mail/aliases#g" \
      src/configure.default | install -Dm0644 /dev/stdin "$BPM_OUTPUT"/etc/mail/exim.conf

  # Symlink for FHS compliancy
  install -d "$BPM_OUTPUT"/usr/lib
  ln -sf ../sbin/exim "$BPM_OUTPUT"/usr/lib/sendmail

  # Install sysusers file
  install -Dm644 "$BPM_WORKDIR"/sysusers "$BPM_OUTPUT"/usr/lib/sysusers.d/exim.conf

  # Install esvm service
  install -Dm644 "$BPM_WORKDIR"/exim.esv "$BPM_OUTPUT"/etc/esvm/services/exim.esv

  # Install directories
  install -dm770 -o root -g 79 "$BPM_OUTPUT"/var/spool/exim
  install -dm770 -o 79 -g 79 "$BPM_OUTPUT"/var/spool/exim/db
  install -dm770 -o root -g 79 "$BPM_OUTPUT"/var/log/exim

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