#!/bin/bash

bitcoindSynced() {

  process=bitcoind
  pidof -s "$process" > /dev/null 2>&1
  status=$?

  blockCount=`bitcoin-cli getblockcount`

  blockChain=`wget -O - http://blockchain.info/q/getblockcount`

  if [[ -z $blockChain ]] ; then
    printf "Error getting blockcount from http://blockchain.info/\n"
    exit 1
  elif [[ "$status" -ne 0 ]]; then
    printf "Error bitcoind not running\n"
    exit 1
  fi

  let "blockDiff = expr $blockChain - $blockCount"


  printf "Number of blocks $blockCount\n"

  if [ $blockDiff = 0 ] ; then
    echo "up to date"
  else
    echo "$blockDiff blocks behind"
  fi

  perc=$(echo "$blockCount" / "$blockChain" | bc -l)

  perc=$(echo "$perc"*"100" | bc)

  perc=$(echo "$perc" | cut -c-5)

  printf ""$perc" %% Done \n"

} 2>/dev/null


bitcoindSynced