#!/bin/bash

# This script gets called from a fresh SD card
# starting up that has an config file on HDD
# from old RaspiBlitz or manufacturer to
# to install and config services 

# LOGFILE - store debug logs of bootstrap
logFile="/home/admin/raspiblitz.log"

# INFOFILE - state data from bootstrap
infoFile="/home/admin/raspiblitz.info"

# CONFIGFILE - configuration of RaspiBlitz
configFile="/mnt/hdd/raspiblitz.conf"

# debug info
echo "STARTED Provisioning --> see logs in ${logFile}"
echo "STARTED Provisioning from preset config file" >> ${logFile}
sudo sed -i "s/^message=.*/message='Provisioning from Config'/g" ${infoFile}

# check if there is a config file
configExists=$(ls ${configFile} 2>/dev/null | grep -c '.conf')
if [ ${configExists} -eq 0 ]; then
  echo "FAIL: no config file (${configFile}) found to run provision!" >> ${logFile}
  exit 1
fi

# import config values
sudo chmod 777 ${configFile}
source ${configFile}

##########################
# BASIC SYSTEM SETTINGS
##########################

echo "### BASIC SYSTEM SETTINGS ###" >> ${logFile}
sudo sed -i "s/^message=.*/message='Setup System .'/g" ${infoFile}

# set hostname data
echo "Setting lightning alias: ${hostname}" >> ${logFile}
sudo sed -i "s/^alias=.*/alias=${hostname}/g" /home/admin/assets/lnd.${network}.conf >> ${logFile} 2>&1

# auto-mount HDD
sudo umount -l /mnt/hdd >> ${logFile} 2>&1
echo "Auto-Mounting HDD - calling script" >> ${logFile}
/home/admin/40addHDD.sh >> ${logFile} 2>&1

# link old SSH PubKeys
# so that client ssh_known_hosts is not complaining after update
if [ -d "/mnt/hdd/ssh" ]; then
  echo "Old SSH PubKey exists on HDD > just linking them" >> ${logFile}
else
  echo "No SSH PubKey exists on HDD > copy from SD card and linking them" >> ${logFile}
  sudo cp -r /etc/ssh /mnt/hdd/ssh >> ${logFile} 2>&1
fi
sudo rm -rf /etc/ssh >> ${logFile} 2>&1
sudo ln -s /mnt/hdd/ssh /etc/ssh >> ${logFile} 2>&1

# link and copy HDD content into new OS
echo "Link HDD content for user bitcoin" >> ${logFile}
sudo chown -R bitcoin:bitcoin /mnt/hdd/lnd >> ${logFile} 2>&1
sudo chown -R bitcoin:bitcoin /mnt/hdd/${network} >> ${logFile} 2>&1
sudo ln -s /mnt/hdd/${network} /home/bitcoin/.${network} >> ${logFile} 2>&1
sudo ln -s /mnt/hdd/lnd /home/bitcoin/.lnd >> ${logFile} 2>&1
sudo chown -R bitcoin:bitcoin /home/bitcoin/.${network} >> ${logFile} 2>&1
sudo chown -R bitcoin:bitcoin /home/bitcoin/.lnd >> ${logFile} 2>&1
echo "Copy HDD content for user admin" >> ${logFile}
sudo mkdir /home/admin/.${network} >> ${logFile} 2>&1
sudo cp /mnt/hdd/${network}/${network}.conf /home/admin/.${network}/${network}.conf >> ${logFile} 2>&1
sudo mkdir /home/admin/.lnd >> ${logFile} 2>&1
sudo cp /mnt/hdd/lnd/lnd.conf /home/admin/.lnd/lnd.conf >> ${logFile} 2>&1
sudo cp /mnt/hdd/lnd/tls.cert /home/admin/.lnd/tls.cert >> ${logFile} 2>&1
sudo mkdir /home/admin/.lnd/data >> ${logFile} 2>&1
sudo cp -r /mnt/hdd/lnd/data/chain /home/admin/.lnd/data/chain >> ${logFile} 2>&1
sudo chown -R admin:admin /home/admin/.${network} >> ${logFile} 2>&1
sudo chown -R admin:admin /home/admin/.lnd >> ${logFile} 2>&1
sudo cp /home/admin/assets/${network}d.service /etc/systemd/system/${network}d.service >> ${logFile} 2>&1
sudo chmod +x /etc/systemd/system/${network}d.service >> ${logFile} 2>&1
sed -i "5s/.*/Wants=${network}d.service/" /home/admin/assets/lnd.service >> ${logFile} 2>&1
sed -i "6s/.*/After=${network}d.service/" /home/admin/assets/lnd.service >> ${logFile} 2>&1
sudo cp /home/admin/assets/lnd.service /etc/systemd/system/lnd.service >> ${logFile} 2>&1
sudo chmod +x /etc/systemd/system/lnd.service >> ${logFile} 2>&1

# backup LND dir (especially for macaroons and tlscerts)
# https://github.com/rootzoll/raspiblitz/issues/324
echo "*** Make backup of LND directory" >> ${logFile}
sudo rm -r  /mnt/hdd/backup_lnd 
sudo cp -r /mnt/hdd/lnd /mnt/hdd/backup_lnd >> ${logFile} 2>&1
numOfDiffers=$(sudo diff -arq /mnt/hdd/lnd /mnt/hdd/backup_lnd | grep -c "differ")
if [ ${numOfDiffers} -gt 0 ]; then
  echo "FAIL: Backup was not successfull" >> ${logFile}
  sudo diff -arq /mnt/hdd/lnd /mnt/hdd/backup_lnd >> ${logFile} 2>&1
  echo "removing backup dir to prevent false override" >> ${logFile}
else
  echo "OK Backup is valid." >> ${logFile}
fi
echo "" >> ${logFile}

# finish setup (SWAP, Benus, Firewall, Update, ..)
sudo sed -i "s/^message=.*/message='Setup System ..'/g" ${infoFile}
/home/admin/90finishSetup.sh >> ${logFile} 2>&1

##########################
# PROVISIONING SERVICES
##########################
sudo sed -i "s/^message=.*/message='Installing Services'/g" ${infoFile}

echo "### RUNNING PROVISIONING SERVICES ###" >> ${logFile}

# TESTNET
if [ "${chain}" = "test" ]; then
    echo "Provisioning TESTNET - run config script" >> ${logFile}
    sudo sed -i "s/^message=.*/message='Provisioning Testnet'/g" ${infoFile}
    sudo /home/admin/config.scripts/network.chain.sh testnet >> ${logFile} 2>&1
else 
    echo "Provisioning TESTNET - keep default" >> ${logFile}
fi

# AUTO PILOT
if [ "${autoPilot}" = "on" ]; then
    echo "Provisioning AUTO PILOT - run config script" >> ${logFile}
    sudo sed -i "s/^message=.*/message='Setup AutoPilot'/g" ${infoFile}
    sudo /home/admin/config.scripts/lnd.autopilot.sh on >> ${logFile} 2>&1
else 
    echo "Provisioning AUTO PILOT - keep default" >> ${logFile}
fi

# AUTO NAT DISCOVERY
if [ "${autoNatDiscovery}" = "on" ]; then
    echo "Provisioning AUTO NAT DISCOVERY - run config script" >> ${logFile}
    sudo sed -i "s/^message=.*/message='Setup AutoNAT'/g" ${infoFile}
    sudo /home/admin/config.scripts/lnd.autonat.sh on >> ${logFile} 2>&1
else 
    echo "Provisioning AUTO NAT DISCOVERY - keep default" >> ${logFile}
fi

# DYNAMIC DNS
if [ "${#dynDomain}" -gt 0 ]; then
    echo "Provisioning DYNAMIC DNS - run config script" >> ${logFile}
    sudo sed -i "s/^message=.*/message='Setup DynamicDNS'/g" ${infoFile}
    sudo /home/admin/config.scripts/internet.dyndomain.sh on ${dynDomain} ${dynUpdateUrl} >> ${logFile} 2>&1
else
    echo "Provisioning DYNAMIC DNS - keep default" >> ${logFile}
fi

# RTL
if [ "${rtlWebinterface}" = "on" ]; then
    echo "Provisioning RTL - run config script" >> ${logFile}
    sudo sed -i "s/^message=.*/message='Setup RTL (takes time)'/g" ${infoFile}
    sudo /home/admin/config.scripts/bonus.rtl.sh on >> ${logFile} 2>&1
    sudo systemctl disable RTL # will get enabled after recover dialog
else
    echo "Provisioning RTL - keep default" >> ${logFile}
fi

# TOR
if [ "${runBehindTor}" = "on" ]; then
    echo "Provisioning TOR - run config script" >> ${logFile}
    sudo sed -i "s/^message=.*/message='Setup TOR (takes time)'/g" ${infoFile}
    sudo /home/admin/config.scripts/internet.tor.sh on >> ${logFile} 2>&1
else 
    echo "Provisioning TOR - keep default" >> ${logFile}
fi

# CUSTOM PORT
echo "Provisioning LND Port" >> ${logFile}
lndPort=$(sudo cat /mnt/hdd/lnd/lnd.conf | grep "^listen=*" | cut -f2 -d':')
if [ ${#lndPort} -gt 0 ]; then
  if [ "${lndPort}" != "9735" ]; then
    echo "User is running custom LND port: ${lndPort}" >> ${logFile}
    sudo /home/admin/config.scripts/lnd.setport.sh ${lndPort} >> ${logFile} 2>&1
  else
    echo "User is running standard LND port: ${lndPort}" >> ${logFile}
  fi
else
  echo "Was not able to get LND port from config." >> ${logFile}
fi

# SSH TUNNEL
if [ "${#sshtunnel}" -gt 0 ]; then
    echo "Provisioning SSH Tunnel - run config script" >> ${logFile}
    sudo sed -i "s/^message=.*/message='Setup SSH Tunnel'/g" ${infoFile}
    sudo /home/admin/config.scripts/internet.sshtunnel.py restore ${sshtunnel} >> ${logFile} 2>&1
else 
    echo "Provisioning SSH Tunnel - keep default" >> ${logFile}
fi

# ROOT SSH KEYS
# check if a backup on HDD exists and when retsore back
backupRootSSH=$(sudo ls /mnt/hdd/ssh/root_backup 2>/dev/null | grep -c "id_rsa")
if [ ${backupRootSSH} -gt 0 ]; then
    echo "Provisioning Root SSH Keys - RESTORING from HDD" >> ${logFile}
    sudo cp -r /mnt/hdd/ssh/root_backup /root/.ssh
    sudo chown -R root:root /root/.ssh
else
    echo "Provisioning Root SSH Keys - keep default" >> ${logFile}
fi

# replay backup LND dir (especially for macaroons and tlscerts)
# https://github.com/rootzoll/raspiblitz/issues/324
echo "" >> ${logFile}
echo "*** Replay backup of LND directory" >> ${logFile}
if [ -d "/mnt/hdd/backup_lnd" ]; then
  echo "Copying ..." >> ${logFile}
  sudo cp -r /mnt/hdd/backup_lnd /mnt/hdd/lnd >> ${logFile} 2>&1
  echo "Updating user admin creds ..." >> ${logFile}
  sudo cp /mnt/hdd/lnd/lnd.conf /home/admin/.lnd/lnd.conf >> ${logFile} 2>&1
  sudo cp /mnt/hdd/lnd/tls.cert /home/admin/.lnd/tls.cert >> ${logFile} 2>&1
  sudo cp -r /mnt/hdd/lnd/data/chain /home/admin/.lnd/data/chain >> ${logFile} 2>&1
  sudo chown -R admin:admin /home/admin/.lnd >> ${logFile} 2>&1
  echo "DONE" >> ${logFile}
else
  echo "No BackupDir so skipping that step." >> ${logFile}
fi
echo "" >> ${logFile}

sudo sed -i "s/^message=.*/message='Setup Done'/g" ${infoFile}

# set the local network hostname
# have at the end - see https://github.com/rootzoll/raspiblitz/issues/462
if [ ${#hostname} -gt 0 ]; then
  hostnameSanatized=$(echo "${hostname}"| tr -dc '[:alnum:]\n\r')
  if [ ${#hostnameSanatized} -gt 0 ]; then
    echo "Setting new network hostname '$hostnameSanatized'" >> ${logFile}
    sudo raspi-config nonint do_hostname ${hostnameSanatized} >> ${logFile} 2>&1
  else
    echo "WARNING: hostname in raspiblitz.conf contains just special chars" >> ${logFile}
  fi
else 
  echo "No hostname set." >> ${logFile}
fi

echo "DONE - Give raspi some cool off time after hard building .... 20 secs sleep" >> ${logFile}
sleep 20

echo "END Provisioning" >> ${logFile}