#!/bin/bash
# Ensure that we prioritize using the private font cache
# SPDX-License-Identifier: GPL-2.0-or-later

# ensure_dir_exists calls `mkdir -p` if the given path is not a directory.
# This speeds up execution time by avoiding unnecessary calls to mkdir.
#
# Usage: ensure_dir_exists <path> [<mkdir-options>]...
function ensure_dir_exists() {
  [ -d "$1" ] ||  mkdir -p "$@"
}

# Set $REALHOME to the users real home directory
REALHOME=$(getent passwd $UID | cut -d ':' -f 6)
# fallback to pre-1.2 behaviour in case getent doesn't work due to apparmor
# could suggest to install unscd to proxy requests to blocked nss module
REALHOME=${REALHOME:-${SNAP_USER_DATA}/../../..}

# Set config folder to local path
export XDG_CONFIG_HOME="$SNAP_USER_DATA/.config"
ensure_dir_exists "$XDG_CONFIG_HOME"
chmod 700 "$XDG_CONFIG_HOME"

function make_user_fontconfig {
  echo "<fontconfig>"
  echo "  <dir>$REALHOME/.local/share/fonts</dir>"
  echo "  <dir>$REALHOME/.fonts</dir>"
  echo "  <cachedir prefix=\"xdg\">fontconfig</cachedir>"
  echo "  <cachedir>$SNAP_DATA/fontconfig</cachedir>"
  echo "  <include ignore_missing=\"yes\">/etc/fonts/fonts.conf</include>"
  if [ ! -z $SNAP_DESKTOP_RUNTIME ]; then
    echo "  <include ignore_missing=\"yes\">${SNAP_DESKTOP_RUNTIME}/etc/fonts/fonts.conf</include>"
  fi
  echo "</fontconfig>"
}

ensure_dir_exists "$XDG_CONFIG_HOME/fontconfig"
make_user_fontconfig > "$XDG_CONFIG_HOME/fontconfig/fonts.conf"

export FONTCONFIG_FILE=${XDG_CONFIG_HOME}/fontconfig/fonts.conf

exec "$@"