#!/bin/bash

SUCCESS="Successful connection"
FAILURE="Failed connection"

function check_result() {
	ADDRARG=$1
	shift
	RESULTARG=$*
		echo "Checking result ($RESULTARG) of connection (to $ADDRARG)" >> $MY_CONFIG_CACHE_DIR/adb_wifi_setup_logs
		if [ "$RESULTARG" == "connected to $ADDRARG" ] || [ "$RESULTARG" == "already connected to $ADDRARG" ]; then
		echo "Success, printing: $SUCCESS" >> $MY_CONFIG_CACHE_DIR/adb_wifi_setup_logs
		echo $SUCCESS
	else
	echo "failure, printing: $FAILURE" >> $MY_CONFIG_CACHE_DIR/adb_wifi_setup_logs
		echo $FAILURE
	fi
}

echo "\nStarting session on $(date)" >> $MY_CONFIG_CACHE_DIR/adb_wifi_setup_logs

LAST_ADB_IP_FILE=$MY_CONFIG_CACHE_DIR/last_adb_ip_connected
PORT=5555

if [ -f $LAST_ADB_IP_FILE ]; then 
	LAST_IP=$(cat $LAST_ADB_IP_FILE)
	echo "Last ip connected was: $LAST_IP" >> $MY_CONFIG_CACHE_DIR/adb_wifi_setup_logs
	RESULT=$(adb connect $LAST_IP)
	echo "Result was $RESULT" >> $MY_CONFIG_CACHE_DIR/adb_wifi_setup_logs
	if [ "$(check_result $LAST_IP $RESULT)" == "$SUCCESS" ]; then
		echo $RESULT
		exit 0
	else
		echo "Failed to connect to cached ip ($LAST_IP). Tryting to connect to usb connected device..."
	fi
else
	echo "No cached ip found, trying to connect to usb connected device..."
fi

adb usb
sleep 1
ADDRLINE=$(adb shell ifconfig wlan0 | grep "inet addr" | awk '{print $2}' | cut -d/ -f1)
adb tcpip $PORT
sleep 1
ADDR=${ADDRLINE//addr:/}
RESULT=$(adb connect $ADDR:$PORT)
if [ "$(check_result $ADDR:$PORT $RESULT)" == "$SUCCESS" ]; then
	echo $ADDR:$PORT > $LAST_ADB_IP_FILE
fi
echo $RESULT