#!/bin/sh

# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2021-present Team LibreELEC (https://libreelec.tv)

EDID_DIR="/storage/.config/firmware/edid"
CONNECTORS=""

if [ "$1" = "-q" ]; then
  VERBOSE=0
else
  VERBOSE=1
fi

info() {
  [ "${VERBOSE}" = "1" ] && echo "$@"
}

mkdir -p "${EDID_DIR}"

for c in /sys/class/drm/card?-* ; do
  [ ! -d "$c" ] && continue
  [ ! -e "$c/status" ] && continue

  if [ $(cat $c/status 2>/dev/null) = "connected" ]; then
    CONNECTOR=$(basename $c | cut -c 7-)
    EDID_NAME="edid-${CONNECTOR}.bin"
    cat $c/edid > "${EDID_DIR}/${EDID_NAME}" 2>/dev/null
    if [ $? -eq 0 ]; then
      [ -n "${CONNECTORS}" ] && CONNECTORS="${CONNECTORS} "
      CONNECTORS="${CONNECTORS}${CONNECTOR}"
    fi
  fi
done

if [ -z "${CONNECTORS}" ]; then
  info "error: no active connectors found"
  exit 1
else
  info "found active connector(s) ${CONNECTORS}"
  [ "${VERBOSE}" = "0" ] && echo "${CONNECTORS}"
fi