#!/bin/bash
# SPDX-License-Identifier: Apache-2.0
# Copyright (C) 2021-present Fewtarius (https://github.com/fewtarius)

. /etc/profile

hdmi_con() {
  if [ -f "/sys/class/extcon/hdmi/state" ]
  then
    HDMI="$(cat /sys/class/extcon/hdmi/state)"
    if [ "${HDMI}" = "HDMI=1" ]
    then
      if [ -f "/sys/devices/virtual/graphics/fbcon/rotate" ]
      then
        echo 0 >/sys/devices/virtual/graphics/fbcon/rotate
      fi
    fi
  fi
}

###
### Test for an HDMI connection and if there is none, configure the system to use
### a rotation patched SDL2.
cat <<EOF >/storage/.config/profile.d/006-hdmi
HDMI="\$(cat /sys/class/extcon/hdmi/state)"
if [ ! "\${HDMI}" = "HDMI=1" ]
then
  SDL=\$(readlink -f /usr/lib/SDL2-rotated/libSDL2.so 2>/dev/null)
  export LD_PRELOAD="\${SDL}"
fi
EOF

chmod 0755 /storage/.config/profile.d/006-hdmi

### If hdmi is connected, set the framebuffer rotation back to normal.
hdmi_con