#! /bin/bash

cam_ip="$1"
wifi_up_logfile="$2"
wifi_up=''

# Initialize
if  ping -c3 "$cam_ip" | grep ' 0%' > /dev/null; then
    wifi_up="yes"
    echo "$(date +%I:%M:%S) Started logging -- Wifi Up" >> $wifi_up_logfile
else
    wifi_up="no"
    echo "$(date +%I:%M:%S) Started logging -- Wifi Down" >> $wifi_up_logfile
fi

# Main loop
while true; do
if  ping -c3 "$cam_ip" | grep ' 0%' > /dev/null; then
    if [ "$wifi_up" == "no" ]; then
        echo "$(date +%I:%M:%S) Wifi Up" >> $wifi_up_logfile
        wifi_up="yes"
    fi
else
    if [ "$wifi_up" == "yes" ]; then
        echo "$(date +%I:%M:%S) Wifi Down" >> $wifi_up_logfile
        wifi_up="no"
    fi
fi
sleep 2
done