# Maintainer: Yves G. <theYinYeti@yalis.fr>

# Choose which language(s) to package (in addition to “en-us”)
# This is a “full-line” extended regular-expression, eg.: 'pt' if you want “pt” but not “pt-br” or “pt-pt”
_I18N_EREGEX='.*'
_pkgname=collabora-online-server-nodocker

# taking version of coolwsd:
pkgver=21.11.0.3
pkgrel=1
arch=('x86_64')
url="https://www.collaboraoffice.com/code/"
license=('MPL')
makedepends=(curl fontconfig libcap)
# ↑ excluding base (bzip2 coreutils gawk grep gzip sed systemd tar util-linux xz)

optdepends=(
  'hunspell: Use with language-specific hunspell dictionaries for LibreOffice spell-check'
  'hyphen: Use with language-specific hyphen rules for LibreOffice hyphenation'
)

depends=()

source=(
  'https://www.collaboraoffice.com/repos/CollaboraOnline/CODE/Packages'
  install
  mkcert_example.sh
  sysusers
  tmpfiles
)
sha1sums=(
  'SKIP'
  '69c3f1ee98aa44aae759c011fcfac6502676535e'
  '3fe2db88f4f7ee203520c59760582103d3e41210'
  'b44b1ddaa362c6fdf65a0899beaa40dada3b232e'
  'aeb478d352c89acb43d651de75fb9951f47e8556'
)

# From deb’s conffiles
backup=(
  # new:
  etc/apache2/conf-available/coolwsd.conf
  etc/coolwsd/coolkitconfig.xcu
  etc/coolwsd/coolwsd.xml
  etc/nginx/snippets/coolwsd.conf
  # old:
  etc/apache2/conf-available/loolwsd.conf
  etc/loolwsd/loolkitconfig.xcu
  etc/loolwsd/loolwsd.xml
  etc/nginx/snippets/loolwsd.conf

  etc/sysconfig/loolwsd
)

# From deb’s pre/post scripts
install=install

# From Dockerfile (https://github.com/CollaboraOnline/online/tree/master/docker), minus i18n files
_upstream_deps=(coolwsd code-brand)

# DEBIAN–ARCHLINUX EQUIVALENCES
#
# In case of a new upstream release:
#
# 1. Move all lines from $_upstream_equiv to $_upstream_equiv_OLD.
#
# 2. Run `makepkg -s` iteratively:
#  * Each time a dependency is missing, move it back from $_upstream_equiv_OLD to $_upstream_equiv.
#  * If a dependency is new, add a new line in $_upstream_equiv with nothing after the “=” sign.
#
# 3. When the package is done, in a terminal run: ./missing-deps.sh
#
# 4. For each “not found” line:
#  * If the missing file should be provided by a new dependency in $_upstream_equiv,
#    then put after the “=” sign the name of an Archlinux package that provides this file;
#    you may need to create the package if it does not exist (usually old versions).
#  * Else the missing file is probably expected to be present on any Debian/Ubuntu system;
#    thus add the missing dependency in the $depends array.
#
# 5. Review files under ./src/_control/* and see if install/upgrade actions have changed.
_upstream_equiv='
  adduser             = 
  cpio                = cpio
  expat               = expat
  fontconfig          = fontconfig
  init-system-helpers = 
  libc6               = gcc-libs
  libcap2             = libcap
  libcap2-bin         = libcap
  libgcc1             = gcc-libs
  libpam0g            = pam
  libpng12-0          = libpng12
  libssl1.0.0         = openssl-1.0
  libstdc++6          = gcc-libs
  openssh-client      = openssh
  systemd             = systemd
  zlib1g              = zlib
'
_upstream_equiv_OLD='
  locales-all         = glibc
'

_main_debs=
_i18n_debs=
declare -A __main_debs __i18n_debs

# >>>> START OF DYNAMIC ADAPTATION OF PKGBUILD
_upstream_handle_dep() {
  local dep="$2"
  local eqv="$(grep "^[[:blank:]]*$(sed 's/[.]/\\\0/g' <<<"$dep")[[:blank:]]*=" <<<"$_upstream_equiv")"
  local meta="$(awk -F$'\n' -vRS= "/^Package:[[:blank:]]*$(sed 's/[.]/\\\0/g' <<<"$dep")\\n/{print}" Packages)"
  local seen depurl
  if [ -n "$eqv" ]; then
    dep="$(sed 's/.*=[[:blank:]]*//' <<<"$eqv")"
    [ -n "$dep" ] || return
    for seen in "${depends[@]}"; do
      [ "$seen" == "$dep" ] && return
    done
    depends+=("$dep")
  elif [ -n "$meta" ]; then
    depurl="$(sed -rn "s#^Filename:[[:blank:]]*(.*/)?#${source[0]%Packages}#p" <<<"$meta")"
    for seen in "${source[@]}"; do
      [ "$seen" == "$depurl" ] && return
    done
    # when a new .DEB is needed, put it in the right array of dependencies
    [ $1 == main ] && __main_debs[$dep]="$depurl" || __i18n_debs[$dep]="$depurl"
    source+=("$depurl")
    sha1sums+=("$(sed -rn "s#^SHA1:[[:blank:]]*##p" <<<"$meta")")
    while read dep; do if [ -n "$dep" ]; then
      _upstream_handle_dep "$1" "$dep"
    fi; done < <(
        sed -rn "s#^Depends:[[:blank:]]*##p" <<<"$meta" \
      | sed 's#([^)]*)##g; s#[[:blank:]]*,[[:blank:]]*#\n#g'
    )
  else
    echo "Unknown dependency: $dep" >&2; exit 1
  fi
}

if [ ${#source[*]} -eq 5 ]; then
  curl -s "${source[0]}" >Packages
  pkgver=$(
    awk -F$'\n' -vRS= '/^Package:[[:blank:]]*coolwsd\n/{print}' Packages \
    | sed -n 's/^Version:[[:blank:]]*\(.*\)-.*/\1/p'
  )

  # first register each .DEB as an unconfirmed main (i.e. not i18n) dependency
  for d in "${_upstream_deps[@]}"; do __main_debs[$d]=_pending_; done
  if [ -z "$_I18N_EREGEX" ]; then
    # go with that if no i18n has been requested
    pkgname=$_pkgname
    eval 'package() { _main_package; }'
  else
    # else register the function for building the main package, and dynamically discover i18n packages
    pkgname=($_pkgname)
    eval "package_$_pkgname() { _main_package; }"
    for p in $( \
      sed -nr 's#^Package:[[:blank:]]*((collaboraoffice-dict|collaboraofficebasis)-[a-z]{2}(-[a-z]+)?)$#\1#p' Packages \
      | grep -ve '-en-us$' \
      | grep -E "(dict|basis)-($_I18N_EREGEX)\$")
    do
      # for each .DEB file found that matches the requested i18n regex, register that .DEB as a i18n one
      __i18n_debs[$p]=_pending_
    done
    while read l; do
      # and register the function for building each of the i18n packages
      pkgname+=(${_pkgname}_${l})
      eval "package_${_pkgname}_${l}() { _i18n_package $l; }"
    done < <( \
      sed -nr 's#^Package:[[:blank:]]*(collaboraoffice-dict-|collaboraofficebasis-)([a-z]{2}(-[a-z]+)?)$#\2#p' Packages \
      | grep -vxF en-us \
      | sort -u \
      | grep -Exe "$_I18N_EREGEX")
  fi

  for dep in "${!__main_debs[@]}"; do
    # recursive dependencies for the main package
    _upstream_handle_dep main "$dep"
  done
  for dep in "${!__i18n_debs[@]}"; do
    # recursive dependencies for the i18n packages
    _upstream_handle_dep i18n "$dep"
  done
  _main_debs="$(IFS='|'; echo "${__main_debs[*]}")"
  _i18n_debs="$(IFS='|'; echo "${__i18n_debs[*]}")"
fi
# some debug:
echo "MAIN DEBs: $_main_debs" >&2
echo "I18N DEBs: $_i18n_debs" >&2
unset _upstream_handle_dep _upstream_equiv _upstream_deps __main_debs __i18n_debs
# <<<< END OF DYNAMIC ADAPTATION OF PKGBUILD

_unpack_deb_file() {
  local target="$1"
  local deb="$2"
  local archive="$3"
  local data="$(ar t "$deb" | grep "^${archive}\.")"
  if [ -n "$data" ]; then
    [ -d "$target" ] || mkdir -p "$target"
    case "$data" in
    *.bz2) ar p "$deb" "$data" | tar -C "$target" -xjf - ;;
    *.gz) ar p "$deb" "$data" | tar -C "$target" -xzf - ;;
    *.xz) ar p "$deb" "$data" | tar -C "$target" -xJf - ;;
    *) echo "Unknown file format: $data" >&2; exit 1 ;;
    esac
  fi
}

_i18n_package() {
  depends=()
  backup=()
  install=
  pkgdesc="Language ${1} internationalization files for Collabora CODE (LibreOffice Online)"

  local data f
  cd "$pkgdir"

  while read f; do
    [[ "$f" =~ (dict|basis)-$1 ]] || continue
    f="$srcdir/$(basename "$f")"
    _unpack_deb_file "$pkgdir" "$f" data
  done < <(tr '|' '\n' <<<"$_i18n_debs")
  chown -R $(id -nu):$(id -ng) .
}

_main_package() {
  pkgdesc="Collabora CODE (LibreOffice Online) server for Nextcloud or ownCloud, without Docker"

  local data f
  cd "$pkgdir"

  while read f; do
    f="$srcdir/$(basename "$f")"
    _unpack_deb_file "$pkgdir" "$f" data
    _unpack_deb_file "$srcdir/_control/$(basename "$f")" "$f" control
  done < <(tr '|' '\n' <<<"$_main_debs")
  find "$srcdir/_control" -type f \( -name control -o -name copyright -o -name md5sums \) -exec rm -f {} +
  find "$srcdir/_control" -depth -empty -exec rm -rf {} \;
  chown -R $(id -nu):$(id -ng) .

  # /lib is deprecated
  mv {lib,usr/lib}

  # use systemd for user allocation
  install -Dm0644 "$srcdir"/sysusers usr/lib/sysusers.d/$_pkgname.conf

  # replace cron with systemd
  rm -rf etc/cron.d
  install -Dm0644 "$srcdir"/tmpfiles usr/lib/tmpfiles.d/$_pkgname.conf

  # add dependency on systemd
  sed -i '/^\[Unit\]/ a \
After=systemd-tmpfiles-setup.service' usr/lib/systemd/system/coolwsd.service

  # keep the cert-making script from the Dockerfile for reference
  install -Dm0755 "$srcdir"/mkcert_example.sh usr/share/doc/coolwsd/example.mkcert.sh

  # do not provide libreoffice for the desktop (seems broken…)
  rm -rf opt/collaboraoffice/share/xdg

  # fix lib + desktop files’ permissions
  chmod a+x opt/collaboraoffice/program/lib*.so

  # https://github.com/CollaboraOnline/Docker-CODE/issues/32
  [ -d etc/sysconfig ] || mkdir etc/sysconfig
  echo 'SLEEPFORDEBUGGER=0' >>etc/sysconfig/coolwsd
}