#!/bin/sh

. /lib/blue-merle/functions.sh
. /lib/functions/gl_util.sh

if [ ! -f "/tmp/sim_change_start" ]; then
	echo 0 > /tmp/sim_change_start
fi

if [ ! -f "/tmp/sim_change_switch" ]; then
	sim_switch off
fi

now=$(date +%s)
sim_change_last=`cat /tmp/sim_change_start`
sim_change_diff=$((now-sim_change_last))

if [[ "$sim_change_diff" -lt 60  ]]; then
	mcu_send_message "Please wait     >1min between   two SIM swaps.  ($sim_change_diff s)"
	exit 1
fi

echo "$now" > /tmp/sim_change_start

mcu_send_message "Starting SIM    swap."
sleep 3


## We're disabling this abort functionality for the moment because the switch keeps being blocked and we cannot notice the pulled switch. We could abort by default and require another toggle to continue.
#i=5
#until  [[ $i -lt 0 ]]
#do
#	mcu_send_message "Pull switch to  abort ($i).     "
#	i=$((i-1))
#	sleep 1
#
#	CHECK_ABORT
#done
#
#mcu_send_message "Continuing ..."
#sleep 1

mcu_send_message "Disabling the ME from transmitting and receiving RF signals."
sleep 3

old_imei=$(READ_IMEI)
old_imsi=$(READ_IMSI)

#CHECK_ABORT

answer=1
while [[ "$answer" -eq 1 ]]; do
	gl_modem AT AT+CFUN=4 | grep -q OK
	if [[ $? -eq 1 ]]; then
		mcu_send_message "Disabling failed. Trying again."
		CHECK_ABORT
	else
		answer=0
		mcu_send_message "Disabled."
		sleep 2
	fi
done

## We generate a random IMEI to prevent a leak of the
## new SIM's IMSI under the old IMEI in case the modem
## still talks to the network
timeout 15  python3 /lib/blue-merle/imei_generate.py -r


mcu_send_message "Replace the SIM card. Then pull the switch."

echo done > /tmp/blue-merle-stage1
logger -p notice -t blue-merle-toggle "Finished with Stage 1"