# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2019-present Shanti Gilbert (https://github.com/shantigilbert)
# Copyright (C) 2023 JELOS (https://github.com/JustEnoughLinuxOS)

. /etc/os-release

export XDG_RUNTIME_DIR=/var/run/0-runtime-dir
export PATH="/usr/bin:/usr/local/bin:/storage/bin:${PATH}"
export SDL_GAMECONTROLLERCONFIG_FILE="/storage/.config/SDL-GameControllerDB/gamecontrollerdb.txt"

J_DIR="/storage/.config/system"
J_CONF="${J_DIR}/configs/system.cfg"
J_CONF_LOCK="/tmp/.system.cfg.lock"
ES_CONF="/storage/.emulationstation/es_settings.cfg"
JSLISTENCONF="${J_DIR}/configs/jslisten.cfg"

function tocon() {
  echo -ne "\033[1000H\033[2K==> ${*}" >/dev/console
}

function log() {
  SOURCE=${1//\/*\//}
  MESSAGE=${*#${1}}
  MESSAGE=${MESSAGE# }
  logger -t ${SOURCE} "${MESSAGE}"
  echo "$(date) ${SOURCE}: ${MESSAGE}" >>/var/log/messages
}

function get_setting() {
  if [ -n "${3}" ]
  then
    ### Test to see if we have a game setting.
    VAR="$2\[\"$(echo ${3} | sed 's/\W/\\&/g')\"]\.$1"
    OUTPUT=$(awk 'BEGIN {FS="="} /^'"${VAR}"'/ {print $NF}' ${J_CONF})
    if [ ! -z "${OUTPUT}" ]
    then
      echo ${OUTPUT}
      return
    else
      ### If not, check to see if we have a system setting.
      LOCAL=$(awk -F: '/^'"${2}.${1}"'=/ { st = index($0,"=");print substr($0,st+1);exit}' ${J_CONF})
      if [ ! -z "${LOCAL}" ]
      then
        echo ${LOCAL}
        return
      fi
    fi
  fi

  if [ -z "${3}" ] && [ -n "${2}" ]
  then
    ### Check to see if we have a global setting.
    LOCAL=$(awk -F: '/^'"${2}.${1}"'=/ {  st = index($0,"=");print substr($0,st+1);exit}' ${J_CONF})
    if [ ! -z "${LOCAL}" ]
    then
      echo ${LOCAL}
      return
    fi
  fi

  ### Check to see if we have a "system." global setting.
  SYSTEM=$(awk -F: '/^system.'"${1}"='/ { st = index($0,"=");print substr($0,st+1);exit}' ${J_CONF})
  if [ -n "${SYSTEM}" ]
  then
    echo ${SYSTEM}
    return
  fi

  ### Check to see if we have a "global." global setting."
  LOCAL=$(awk -F: '/^'"${1}"='/ { st = index($0,"=");print substr($0,st+1);exit}' ${J_CONF})
  if [ -z "${LOCAL}" ]
  then
    awk -F: '/^global.'"${1}"='/ { st = index($0,"=");print substr($0,st+1);exit}' ${J_CONF}
    return
  else
    echo ${LOCAL}
  fi
  return
}

function wait_lock() {
  while true
  do
    if (set -o noclobber; echo "$$" > "${J_CONF_LOCK}") 2>/dev/null
    then
      trap 'rm -f "$lockfile"; exit $?' INT TERM EXIT
      break
    else
     sleep 1
    fi
  done
}

function del_setting() {
  wait_lock
  if [[ "${1}" =~ ^[[:alnum:]] ]]
  then
    sed -i "/^${1}=/d" "${J_CONF}"
  fi
  rm -f "${J_CONF_LOCK}"
}

function sort_settings() {
  wait_lock
  cat "${J_CONF}" | grep ^[a-z0-9] | sort >"${J_CONF}.tmp"
  mv "${J_CONF}.tmp" "${J_CONF}"
  rm -f "${J_CONF_LOCK}"
}

function set_setting() {
  if [[ "${1}" =~ ^[[:alnum:]] ]]
  then
    del_setting "${1}"
    if [ ! "${2}" = "default" ]
    then
      wait_lock
      echo "${1}=${2}" >> "${J_CONF}"
      rm -f "${J_CONF_LOCK}"
    fi
  fi
}

function battery_percent() {
  awk 'BEGIN {FS="="} /POWER_SUPPLY_CAPACITY=/ {print $2}' /sys/class/power_supply/[Bb][Aa][Tt]*/uevent 2>/dev/null
}

function get_es_setting() {
  echo $(sed -n "s|\s*<${1} name=\"${2}\" value=\"\(.*\)\" />|\1|p" ${ES_CONF})
}

function fbwidth() {
  local ORIENTATION=$(</sys/devices/virtual/graphics/fbcon/rotate)
  if [ "${ORIENTATION}" = "0" ]
  then
    fbset | awk '/geometry/ {print $2}'
  else
    fbset | awk '/geometry/ {print $3}'
  fi
}

function fbheight() {
  local ORIENTATION=$(</sys/devices/virtual/graphics/fbcon/rotate)
  if [ "${ORIENTATION}" = "0" ]
  then
    fbset | awk '/geometry/ {print $3}'
  else
    fbset | awk '/geometry/ {print $2}'
  fi
}

function cpu_vendor() {
  awk '/vendor_id/ {print $3;exit}' /proc/cpuinfo
}

function get_aspect_ratio() {
  FBWIDTH=$(fbwidth)
  FBHEIGHT=$(fbheight)

  ASPECT=$(printf "%.2f" $(echo "(${FBWIDTH} / ${FBHEIGHT})" | bc -l))

  case ${ASPECT} in
    1.00)
      ASPECT="1:1"
    ;;
    1.50|0.67)
      ASPECT="3:2"
    ;;
    1.33|0.75)
      ASPECT="4:3"
    ;;
    1.67|0.60)
      ASPECT="5:3"
    ;;
    1.7*|0.56)
      ASPECT="16:9"
    ;;
    1.60|0.62)
      ASPECT="16:10"
    ;;
  esac
  echo ${ASPECT}
}