#!/bin/sh


if [ $# -gt 2 ] || [ $# -lt 1 ]; then
echo "\
Usage: $0 <image_id> [timeout]
    image_id <0|1> : for dual FW image SKU-s, the id of the image to switch to
                     (LTE910-NA1 is the only supported radio for now).
    timeout        : wait time for radio to come up if set (default : 15 sec)
"
    exit 1
fi

#
# Load args (don't wait for the radio by default)
#
FWIMAGE=$1
TIMEOUT=${2:-15}
if [ "$VERBOSE" != "yes" ]; then
  VERBOSE=""
fi

[ "$VERBOSE" ] && echo -n "Switching the radio firmware image: "

#
# Check if the radio present
#
MODEL=$(radio-query --model)
if [ $? -ne 0 ]; then
  [ "$VERBOSE" ] && echo "Assume no radio on this device."
  exit 0
fi

#
# Applicable for LTE910-NA1 with dual FW images only
#
productid=$(/usr/sbin/mts-io-sysfs show product-id)
if [[ $MODEL != LE910-NA1 ]] || ! [[ $productid =~ -LNA3- ]] ; then
  [ "$VERBOSE" ] && echo "Firmware switch is supported only on LE910-NA1 models with product-id containing -LNA3-."
  exit 0
fi

#
# Check if firmware switch is required
#
FWACTIVE=$(radio-query --active-firmware)
if [ $? -ne 0 ] || [ "$FWACTIVE" == "" ]; then
  [ "$VERBOSE" ] && echo "The $MODEL radio does not support firmware switching."
  exit 0
fi

if [ "$FWACTIVE" == "$FWIMAGE" ]; then
  [ "$VERBOSE" ] && echo "The radio firmware image is already set."
  exit 0
fi

# Verizon does not want an APN, so remove first
if ((FWIMAGE == 1)) ; then
  /usr/sbin/mlinux-switch-apn $FWIMAGE
fi


#
# Switch the firmware
#
RESULT=$(radio-cmd --set-active-firmware "$FWIMAGE")
if [ $? -ne 0 ]; then
  echo "$RESULT"
  exit 1
fi


#
# Exit if no TIMEOUT set
#
# This is somewhat dangerous in that we assume the radio
# will switch.
if ((TIMEOUT == 0)) ; then
   if ((FWIMAGE == 0)) ; then
     echo "Use mlinux-switch-apn to switch the APN when the radio is ready, before dialing"
     exit 0
   fi
fi

#
# Wait for the radio to be ready before continuing
#
COUNTER=0

[ "$VERBOSE" ] && echo -n "Wait..."

#
# Give it some time
#
sleep 5

while [ $COUNTER -lt $TIMEOUT ]; do
  MODEL=$(radio-query --model)
  if [ $? -eq 0 ]; then
    echo "Cellular radio firmware has been switched to $FWIMAGE image."
    ((FWIMAGE == 0)) && /usr/sbin/mlinux-switch-apn $FWIMAGE
    exit 0
  fi

  let COUNTER=COUNTER+1

  [ "$VERBOSE" ] && echo -n "."

  sleep 1
done

echo "Cellular radio is not ready."
echo "When it becomes ready, invoke /usr/sbin/mlinux-switch-apn"
echo "to set the APN"
exit 1