#!/bin/sh

set -e

. /usr/share/debconf/confmodule

CONFAVAIL=/usr/share/fontconfig/conf.avail
CONFDIR=/etc/fonts/conf.d

# Check if this is the initial configuration and not an upgrade of an
# existing configuration
# Usage: if is_initial_configuration "$@"; then ... fi from top level
is_initial_configuration() {
    # Plain installation
    if [ "$1" = configure ] && [ -z "$2" ]; then
        return 0
    fi
    # Configuration via dpkg-reconfigure
    if [ "$1" = reconfigure ] || [ "$DEBCONF_RECONFIGURE" ]; then
        return 0
    fi
    return 1
}

# Create /etc/fonts/conf.d/10-hinting-slight.conf symlink on upgrade, this is
# upstream default
if [ "$1" = "configure" ] && dpkg --compare-versions "$2" le-nl "2.12.3-0.2~"; then
    test -e $CONFDIR/10-hinting-slight.conf || \
        ln -s $CONFAVAIL/10-hinting-slight.conf $CONFDIR/10-hinting-slight.conf
fi

# Replace symlinks obsoleted by upstream with their equivalent new ones
if [ "$1" = "configure" ] && dpkg --compare-versions "$2" le-nl "2.14.2-5~"; then
    if [ -h $CONFDIR/10-no-sub-pixel.conf ] && ! readlink -e $CONFDIR/10-no-sub-pixel.conf >/dev/null; then
        rm $CONFDIR/10-no-sub-pixel.conf
        test -e $CONFDIR/10-sub-pixel-none.conf || \
          ln -s $CONFAVAIL/10-sub-pixel-none.conf $CONFDIR/10-sub-pixel-none.conf
    fi
fi

if [ "$1" = "configure" ] && dpkg --compare-versions "$2" le-nl "2.15.0-1.1~"; then
    if [ -h $CONFDIR/70-no-bitmaps.conf ]; then
        rm $CONFDIR/70-no-bitmaps.conf
        test -e $CONFDIR/70-no-bitmaps-except-emoji.conf || \
          ln -s $CONFAVAIL/70-no-bitmaps-except-emoji.conf $CONFDIR/70-no-bitmaps-except-emoji.conf
    fi
fi

if is_initial_configuration "$@"; then
    db_get fontconfig/hinting_type
    hinting_type="$RET"

    unhinted="10-unhinted.conf"
    autohint="10-autohint.conf"

    if [ -h $CONFDIR/$unhinted ]; then
    	rm $CONFDIR/$unhinted
    fi
    if [ -h $CONFDIR/$autohint ]; then
    	rm $CONFDIR/$autohint
    fi

    case "$hinting_type" in
    "Native")
    	;;
    "Autohinter")
    	ln -s $CONFAVAIL/$autohint $CONFDIR/$autohint
    	;;
    "None")
    	ln -s $CONFAVAIL/$unhinted $CONFDIR/$unhinted
    	;;
    esac

    db_get fontconfig/hinting_style
    hinting_style="$RET"

    hintnone="10-hinting-none.conf"
    hintslight="10-hinting-slight.conf"
    hintmedium="10-hinting-medium.conf"
    hintfull="10-hinting-full.conf"

    if [ -h $CONFDIR/$hintnone ]; then
    	rm $CONFDIR/$hintnone
    fi
    if [ -h $CONFDIR/$hintslight ]; then
    	rm $CONFDIR/$hintslight
    fi
    if [ -h $CONFDIR/$hintmedium ]; then
    	rm $CONFDIR/$hintmedium
    fi
    if [ -h $CONFDIR/$hintfull ]; then
    	rm $CONFDIR/$hintfull
    fi

    case "$hinting_style" in
    "hintnone")
    	ln -s $CONFAVAIL/$hintnone $CONFDIR/$hintnone
    	;;
    "hintslight")
    	ln -s $CONFAVAIL/$hintslight $CONFDIR/$hintslight
    	;;
    "hintmedium")
    	ln -s $CONFAVAIL/$hintmedium $CONFDIR/$hintmedium
    	;;
    "hintfull")
    	ln -s $CONFAVAIL/$hintfull $CONFDIR/$hintfull
    	;;
    esac

    db_get fontconfig/subpixel_rendering
    subpixel_rendering="$RET"

    subpixel="10-sub-pixel-rgb.conf"
    no_subpixel="10-sub-pixel-none.conf"

    if [ -h $CONFDIR/$subpixel ]; then
    	rm $CONFDIR/$subpixel
    fi

    if [ -h $CONFDIR/$no_subpixel ]; then
    	rm $CONFDIR/$no_subpixel
    fi

    case "$subpixel_rendering" in
    "Automatic")
    	;;
    "Always")
    	ln -s $CONFAVAIL/$subpixel $CONFDIR/$subpixel
    	;;
    "Never")
    	ln -s $CONFAVAIL/$no_subpixel $CONFDIR/$no_subpixel
    	;;
    esac


    db_get fontconfig/enable_bitmaps
    enable_bitmaps="$RET"

    yes_bitmaps="70-yes-bitmaps.conf"
    no_bitmaps="70-no-bitmaps-except-emoji.conf"

    if [ -h $CONFDIR/$yes_bitmaps ]; then
    	rm $CONFDIR/$yes_bitmaps
    fi

    if [ -h $CONFDIR/$no_bitmaps ]; then
    	rm $CONFDIR/$no_bitmaps
    fi

    case "$enable_bitmaps" in
    "true")
    	ln -s $CONFAVAIL/$yes_bitmaps $CONFDIR/$yes_bitmaps
    	;;
    *)
    	ln -s $CONFAVAIL/$no_bitmaps $CONFDIR/$no_bitmaps
    	;;
    esac
fi # end changes applied only for initial config / reconfiguration

# Create /usr/local/share/fonts
LOCALDIR=/usr/local/share/fonts
if [ ! -d $LOCALDIR ]; then
  if mkdir $LOCALDIR 2>/dev/null ; then
    chmod 2775 $LOCALDIR
    chown root:staff $LOCALDIR
  fi
fi

# fontconfig-config 2.11.0-5 (and earlier) created /etc/fonts.conf.d by mistake
# remove it

if [ -d /etc/fonts.conf.d ]; then
    rmdir --ignore-fail-on-non-empty /etc/fonts.conf.d
fi