#!/bin/bash

## get basic info
source /home/admin/raspiblitz.info 2>/dev/null

# get local ip
localip=$(ip addr | grep 'state UP' -A2 | tail -n1 | awk '{print $2}' | cut -f1 -d'/')

# create bitcoin base directory and link with bitcoin user
sudo rm -rf /mnt/hdd/bitcoin 2>/dev/null
sudo mkdir /mnt/hdd/bitcoin
sudo chown bitcoin:bitcoin /mnt/hdd/bitcoin 
sudo ln -s /mnt/hdd/bitcoin /home/bitcoin/.bitcoin

clear
echo "************************************************************************************"
echo "Instructions to COPY/TRANSFER SYNCED BLOCKCHAIN from another computer"
echo "************************************************************************************"
echo ""
echo "You can use the blockchain from another bitcoin-core client with version greater or equal"
echo "to 0.17.1 with transaction index switched on (txindex=1 in the bitcoin.conf)."
echo ""
echo "Both computers (your RaspberryPi and the other computer with the full blockchain on) need"
echo "to be connected to the same local network."
echo ""
echo "Open a terminal on the source computer and change into the directory that contains the"
echo "blockchain data. You should see directories 'blocks', 'chainstate' & 'indexes'".
echo "Make sure the bitcoin client on that computer is stopped."
echo ""
echo "COPY, PASTE & EXECUTE the following command on the blockchain source computer:"
echo "sudo scp -r ./chainstate ./indexes ./testnet3 ./blocks bitcoin@${localip}:/home/bitcoin/.bitcoin"
echo ""
echo "This command will ask for your SSH PASSWORD A from this RaspiBlitz."
echo "It can take multiple hours until transfer is complete - be patient."
echo "************************************************************************************"
echo "PRESS ENTER if transfers is done OR if you want to choose another another option."
read key

# unlink bitcoin user (will created later in setup again)
sudo unlink /home/bitcoin/.bitcoin 

# make quick check if data is there
anyDataAtAll=0
quickCheckOK=1
count=$(sudo ls /mnt/hdd/bitcoin/blocks 2>/dev/null | grep -c '.dat')
if [ ${count} -gt 0 ]; then
   echo "Found data in /mnt/hdd/bitcoin/blocks"
   anyDataAtAll=1
fi
if [ ${count} -lt 3000 ]; then
  echo "FAIL: transfere seems invalid - less then 3000 .dat files (${count})"
  quickCheckOK=0
fi
count=$(sudo ls /mnt/hdd/bitcoin/chainstate 2>/dev/null | grep -c '.ldb')
if [ ${count} -gt 0 ]; then
   echo "Found data in /mnt/hdd/bitcoin/chainstate"
   anyDataAtAll=1
fi
if [ ${count} -lt 1400 ]; then
  echo "FAIL: transfere seems invalid - less then 1400 .ldb files (${count})"
  quickCheckOK=0
fi
count=$(sudo ls /mnt/hdd/bitcoin/indexes/txindex 2>/dev/null | grep -c '.ldb')
if [ ${count} -gt 0 ]; then
   echo "Found data in /mnt/hdd/bitcoin/indexes/txindex"
   anyDataAtAll=1
fi
if [ ${count} -lt 5200 ]; then
  echo "FAIL: less then 5200 .ldb files (${count}) in /mnt/hdd/bitcoin/chainstate (transfere seems invalid)"
  quickCheckOK=0
fi

# just if any data transferred ..
if [ ${anyDataAtAll} -eq 1 ]; then

  # data was invalid - ask user to keep?
  if [ ${quickCheckOK} -eq 0 ]; then
    echo "*********************************************"
    echo "There seems to be an invalid transfer."
    echo "Wait 5 secs ..."
    sleep 5
    dialog --title " INVALID TRANSFER - DELETE DATA?" --yesno "Quickcheck shows the data you transferred is invalid/incomplete. This can lead further RaspiBlitz setup to get stuck in error state.\nDo you want to reset/delete data data?" 8 60
    response=$?
    echo "response(${response})"
    case $response in
      1) quickCheckOK=1 ;;
    esac
  fi

  if [ ${quickCheckOK} -eq 0 ]; then
    echo "Deleting invalid Data ..."
    sudo rm -rf /mnt/hdd/bitcoin
    sudo rm -rf /home/bitcoin/.bitcoin
    sleep 2
  fi

else
  
  echo "NO DATA ... back to menu .."
  # when no data transferred - just delete bitcoin base dir again
  sudo rm -rf /mnt/hdd/bitcoin
  sleep 2

fi

# setup script will decide the next logical step
/home/admin/10setupBlitz.sh