#!/bin/sh

usage() {
  echo "Usage: ${0##*/} [--download] [-b|--branch branch] [-e|--email mail] [--depends] plugin-dir|plugin.tar.gz" >&2
  exit 1
}


load_dsc() {
  if [[ -r "$1" ]]; then
    PL_NAME=$(sed -n 's/"//g;s/^name\s*=\s*\(.*\)$/\1/p' "$1")
    PL_VERSION=$(sed -n 's/"//g;s/^version\s*=\s*\(.*\)$/\1/p' "$1")
    TDEPENDS=$(sed -n 's/"//g;s/^depends\s*=\s*\(.*\)$/\1/p' "$1")
    for dep in $TDEPENDS; do
      PL_DEPENDS="gosa-plugin-$dep, $PL_DEPENDS"
    done
    PL_DESCRIPTION=$(sed -n 's/"//g;s/^description\s*=\s*\(.*\)$/\1/p' "$1")
    PL_AUTHOR=$(sed -n 's/"//g;s/^author\s*=\s*\([^<]*\).*$/\1/p' "$1")
    PL_MAIL=$(sed -n 's/"//g;s/^author\s*=[^<].*<\([^>]*\).*$/\1/p' "$1")
  else
    echo "Error: cannot find description file" >&2
    exit 1
  fi
}


TEMP=`getopt -o e:r: --long download,release:,email:,depends: -n 'dh-make-gosa' -- "$@"`
if [[ $? != 0 ]] ; then
  echo "Error: cannot get command line information" >&2
  exit 1
fi

eval set -- "$TEMP"

# Load command  line vars
RELEASE=trunk
DOWNLOAD=
DEPENDS=
DEST=
while true; do
  case "$1" in
    -e|--email) DEBMAIL=$2
                shift 2
                ;;
    -r|--release)
                if [[ "$2" != "trunk" ]]; then
                  RELEASE=tags/$2
                fi
                shift 2
                ;;
    --depends)  DEPENDS="$2"
                shift 2
                ;;
    --dest)     DEST=$2/
                shift 2
                ;;
    --download) DOWNLOAD=yes
                shift 1
                ;;
    --)         shift
                break
                ;;
    *)          usage
                ;;
  esac
done

[[ $# -ne 1 ]] && usage
file=$*

# Three possiblities
if [[ -d "$file" ]]; then

  # It's a local directory
  load_dsc $file/plugin.dsc

  # Setup build environment
  BUILD_PATH=${DEST}gosa-plugin-${PL_NAME}-${PL_VERSION}
  if [[ -d "$BUILD_PATH" ]]; then
    echo "Error: build path $BUILD_PATH already exists" >&2
    exit 2
  fi
  cp -a "$PL_NAME" "$BUILD_PATH"

elif [[ -f "$file" ]]; then

  # It's a compressed user contributed file
  TMPDIR="/tmp/dh-make-gosa-$PPID"
  if [[ -d "/tmp/dh-make-gosa-$PPID"  ]]; then
    echo "Error: directory $TMPDIR exists" >&2
    exit 4
  fi

  # Untar
  mkdir -p "$TMPDIR"
  tar --extract --directory "$TMPDIR" -fz "$file" &> /dev/null
  if [[ $? -ne 0 ]]; then
    echo "Error: cannot extract plugin file - invalid file format" >&2
    exit 5
  fi

  # It's a local directory
  load_dsc TMPDIR/*/plugin.dsc

  # Setup build environment
  BUILD_PATH=${DEST}gosa-plugin-${PL_NAME}-${PL_VERSION}
  mv "$TMPDIR/*" "$BUILD_PATH"

else

  echo "Error: cannot find plugin $file" >&2
  exit 5

fi


PL_DEPENDS=$(echo $PL_DEPENDS$DEPENDS | sed 's/,\s*$//')
echo "Debian package summary ========================================"
echo "Plugin:       $PL_NAME"
echo "Version:      $PL_VERSION"
echo "Description:  $PL_DESCRIPTION"
echo "Depends:      $PL_DEPENDS"
echo "Author name:  $PL_AUTHOR"
echo "Author email: $PL_MAIL"
echo
read -s -n 1 -p "Do you want to continue? (y/n)" ans; echo
[[ "$ans" != "y" ]] && exit 0

pushd . &> /dev/null

cd "$BUILD_PATH"

# Use gosa-plugin skelleton
echo "Calling dh_make..."
echo | dh_make -e "$PL_MAIL" -c gpl -s -n -f gosa-plugin-${PL_NAME}-${PL_VERSION}.tar.gz &> /dev/null
if [[ $? -ne 0 ]]; then
	echo "Failed to call dh_make - aborting!"
	exit 1
fi

echo "Apdapting debian descriptive files..."
# Generate install file
for dir in admin personal addons; do
	[[ -d $dir ]] && echo -e "$dir\t\t\t/usr/share/gosa/plugins" > debian/install
done
for dir in help/*; do
	echo -e "$dir\t\t\t/usr/share/gosa/plugins/$PL_NAME" >> debian/install
done
for dir in $(ls -1 locale | grep -v "^en$" | grep -v "^messages.po$"); do
	echo -e "locale/$dir\t\t\t/usr/share/gosa/locale/plugins/$PL_NAME" >> debian/install
done

# Generate dirs
echo "usr/share/gosa" > debian/dirs

# Adapt control
sed -i 's/^Section: unknown/Section: web/g' debian/control
sed -i 's/^Depends: .*$/Depends: gosa/g' debian/control
sed -i "s/^Description: .*$/Description: $PL_NAME plugin for GOsa/g" debian/control
sed -i "s/^ <.*$/ $PL_DESCRIPTION\
 .\
 GOsa is a combination of system-administrator and end-user web\
 interface, designed to handle LDAP based setups.\
/g" debian/control

# Adapt README.debian
cat <<EOF > debian/README.Debian
README.Debian for GOsa $PL_NAME plugin $PL_VERSION
-------------------------------------------

Please read the main GOsa README.Debian file for more information.

----
$PL_AUTHOR <$PL_MAIL>  Fri 02 Jun 2006 16:23:50 +0200
EOF

# Fix rules
sed -i "/MAKE/d" debian/rules
sed -i "s/#.*dh_install$/\tdh_install/" debian/rules

# Adapt postinst/postrm
for file in postinst postrm; do
sed 's!#DEBHELPER#!#DEBHELPER#\
\
# Get apache versions running\
servers=""\
for srv in apache apache-ssl apache2; do\
        if [[ -x /usr/sbin/$srv ]]; then\
                servers="$srv $servers"\
        fi\
done\
\
# Update gosa\
/usr/sbin/update-gosa\
\
# Finally restart servers\
for server in $servers; do\
        if [[ -x /usr/sbin/invoke-rc.d ]]; then\
                invoke-rc.d $server restart\
        else\
                /etc/init.d/$server restart\
        fi\
done\
\
!' debian/$file.ex > debian/$file
done

# Remove examples
rm debian/*ex debian/*EX &> /dev/null

popd &> /dev/null

echo "Done."