#!/bin/sh

# fix broken $UID on some system...
if test "x$UID" = "x"; then
  if test -x /usr/xpg4/bin/id; then
    UID=`/usr/xpg4/bin/id -u`;
  else
    UID=`id -u`;
  fi
fi

# set $XDG_MENU_PREFIX to "xfce-" so that "xfce-applications.menu" is picked
# over "applications.menu" in all Xfce applications.
if test "x$XDG_MENU_PREFIX" = "x"; then
  XDG_MENU_PREFIX="xfce-"
  export XDG_MENU_PREFIX
fi

# set DESKTOP_SESSION so that one can detect easily if an Xfce session is running
if test "x$DESKTOP_SESSION" = "x"; then
  DESKTOP_SESSION="xfce"
  export DESKTOP_SESSION
fi

# set XDG_CURRENT_DESKTOP so that Qt 5 applications can identify user set Xfce theme
if test "x$XDG_CURRENT_DESKTOP" = "x"; then
  XDG_CURRENT_DESKTOP="XFCE"
  export XDG_CURRENT_DESKTOP
fi

# $XDG_CONFIG_HOME defines the base directory relative to which user specific
# configuration files should be stored. If $XDG_CONFIG_HOME is either not set
# or empty, a default equal to $HOME/.config should be used.
if test "x$XDG_CONFIG_HOME" = "x" ; then
  XDG_CONFIG_HOME=$HOME/.config
  export XDG_CONFIG_HOME
fi
[ -d "$XDG_CONFIG_HOME" ] || mkdir "$XDG_CONFIG_HOME"

# $XDG_CACHE_HOME defines the base directory relative to which user specific
# non-essential data files should be stored. If $XDG_CACHE_HOME is either not
# set or empty, a default equal to $HOME/.cache should be used.
if test "x$XDG_CACHE_HOME" = "x" ; then
  XDG_CACHE_HOME=$HOME/.cache
  export XDG_CACHE_HOME
fi
[ -d "$XDG_CACHE_HOME" ] || mkdir "$XDG_CACHE_HOME"

# set up XDG user directores.  see
# http://freedesktop.org/wiki/Software/xdg-user-dirs
if command -v xdg-user-dirs-update >/dev/null 2>&1; then
    xdg-user-dirs-update
fi

if test "x$XFCE4_SESSION_COMPOSITOR" = "x"
then
  # For now, start with an empty list
  XRESOURCES=""

  # Has to go prior to merging Xft.xrdb, as its the "Defaults" file
  test -r "/etc/xdg/xfce4/Xft.xrdb" && XRESOURCES="$XRESOURCES /etc/xdg/xfce4/Xft.xrdb"
  test -r $HOME/.Xdefaults && XRESOURCES="$XRESOURCES $HOME/.Xdefaults"

  BASEDIR=$XDG_CONFIG_HOME/xfce4
  if test -r "$BASEDIR/Xft.xrdb"; then
    XRESOURCES="$XRESOURCES $BASEDIR/Xft.xrdb"
  elif test -r "$XFCE4HOME/Xft.xrdb"; then
    mkdir -p "$BASEDIR"
    cp "$XFCE4HOME/Xft.xrdb" "$BASEDIR"/
    XRESOURCES="$XRESOURCES $BASEDIR/Xft.xrdb"
  fi

  # merge in X cursor settings
  test -r "$BASEDIR/Xcursor.xrdb" && XRESOURCES="$XRESOURCES $BASEDIR/Xcursor.xrdb"

  # ~/.Xresources contains overrides to the above
  test -r "$HOME/.Xresources" && XRESOURCES="$XRESOURCES $HOME/.Xresources"

  # load all X resources (adds /dev/null to avoid an empty list that would hang the process)
  cat /dev/null $XRESOURCES | xrdb -merge -

  # load local modmap
  test -r $HOME/.Xmodmap && xmodmap $HOME/.Xmodmap
fi

# ensure both the DBus session bus and systemd user session (if running) has
# all the env vars it needs to properly populate the environment of child
# processes
if command -v dbus-update-activation-environment >/dev/null 2>&1; then
  if command -v systemctl >/dev/null 2>&1 && systemctl --user list-jobs >/dev/null 2>&1; then # user session is running
    systemd_arg='--systemd'
  fi

  dbus-update-activation-environment $systemd_arg \
    DESKTOP_SESSION \
    XAUTHLOCALHOSTNAME=$XAUTHLOCALHOSTNAME \
    XDG_CACHE_HOME \
    XDG_CONFIG_DIRS \
    XDG_CONFIG_HOME \
    XDG_CURRENT_DESKTOP \
    XDG_DATA_DIRS \
    XDG_DATA_HOME \
    XDG_MENU_PREFIX \
    XDG_RUNTIME_DIR \
    XDG_SEAT \
    XDG_SEAT_PATH \
    XDG_SESSION_CLASS \
    XDG_SESSION_DESKTOP \
    XDG_SESSION_ID \
    XDG_SESSION_PATH \
    XDG_SESSION_TYPE \
    XDG_STATE_HOME
fi

# check if we start xfce4-session with ck-launch-session. this is only
# required for starting from a console, not a login manager
if test "x$XFCE4_SESSION_WITH_CK" = "x1"; then
  if command -v ck-launch-session >/dev/null 2>&1; then
    exec ck-launch-session xfce4-session
  else
    echo
    echo "You have tried to start Xfce with consolekit support, but"
    echo "ck-launch-session is not installed."
    echo "Aborted startup..."
    echo
    exit 1
  fi
else
  # workaround https://github.com/canonical/lightdm/issues/63
  if [ -n "$XDG_VTNR" ] && [ -f "/sys/devices/virtual/tty/tty0/active" ]; then
    VT_TEST_CNT=1
    while true; do
      CURRENT_VT=$(cat /sys/devices/virtual/tty/tty0/active)
      if [ "$CURRENT_VT" = "tty$XDG_VTNR" ]; then
        break
      fi
      VT_TEST_CNT=$((VT_TEST_CNT + 1))
      if [ "$VT_TEST_CNT" -gt 100 ]; then
        echo "VT $XDG_VTNR is expected but the switch did not happen in the last second, continuing anyway."
        break
      fi
      sleep 0.01
    done
  fi

  # start xfce4-session normally
  exec ${XFCE4_SESSION_COMPOSITOR:-xfce4-session}
fi

# if we got here, then exec failed
exit 1
