#!/usr/bin/env bash
# Pi-hole: A black hole for Internet advertisements
# (c) 2015, 2016 by Jacob Salmela
# Network-wide ad blocking via your Raspberry Pi
# http://pi-hole.net
# Calculates stats and displays to an LCD
#
# Pi-hole is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.


#Functions##############################################################################################################
json=""
today=$(date "+%b %e")

function outputJSON(){
	json=$(curl -s http://127.0.0.1/admin/api.php?summaryRaw)
	echo ${json}
}

function normalChrono(){
	for (( ; ; ))
	do
		clear
		# Displays a colorful Pi-hole logo
		echo " ___ _     _        _"
		echo "| _ (_)___| |_  ___| |___"
		echo "|  _/ |___| ' \/ _ \ / -_)"
		echo "|_| |_|   |_||_\___/_\___|"
		echo ""
		echo "        $(ifconfig eth0 | awk '/inet addr/ {print $2}' | cut -d':' -f2)"
		echo ""
		uptime | cut -d' ' -f11-
		#uptime -p	#Doesn't work on all versions of uptime
		uptime | awk -F'( |,|:)+' '{if ($7=="min") m=$6; else {if ($7~/^day/) {d=$6;h=$8;m=$9} else {h=$6;m=$7}}} {print d+0,"days,",h+0,"hours,",m+0,"minutes."}'
		echo "-------------------------------"
		# Uncomment to continually read the log file and display the current domain being blocked
		#tail -f /var/log/pihole.log | awk '/\/etc\/pihole\/gravity.list/ {if ($7 != "address" && $7 != "name" && $7 != "/etc/pihole/gravity.list") print $7; else;}'

		blockedDomainsTotal=$(echo ${json} | python -c "import sys, json; print json.load(sys.stdin)['domains_being_blocked']")
		queriesToday=$(echo ${json} | python -c "import sys, json; print json.load(sys.stdin)['dns_queries_today']")
		blockedToday=$(echo ${json} | python -c "import sys, json; print json.load(sys.stdin)['ads_blocked_today']")
		percentBlockedToday=$(echo ${json} | python -c "import sys, json; print json.load(sys.stdin)['ads_percentage_today']")


		echo "Blocking:      $blockedDomainsTotal"
		echo "Queries:       $queriesToday" #same total calculation as dashboard
	    echo "Pi-holed:      $blockedToday ($percentBlockedToday%)"
        json=$(curl -s http://127.0.0.1/admin/api.php?summaryRaw)
		sleep 5
	done
}


function displayHelp(){
 	echo "::: Displays stats about your piHole!"
    echo ":::"
    echo "::: Usage: sudo pihole -c [optional:-j]"
    echo "::: Note: If no option is passed, then stats are displayed on screen, updated every 5 seconds"
    echo ":::"
    echo "::: Options:"
    echo ":::  -j, --json		output stats as JSON formatted string"
    echo ":::  -h, --help		display this help text"

    exit 1
}

if [[ $# = 0 ]]; then
    json=$(curl -s http://127.0.0.1/admin/api.php?summaryRaw)
	normalChrono
fi

for var in "$@"
do
  case "$var" in
    "-j" | "--json"  ) outputJSON;;
    "-h" | "--help"  ) displayHelp;;
    *                ) exit 1;;
  esac
done