#!/bin/bash

# https://github.com/cryptoadvance/specter-desktop  
# ~/.config/btc-rpc-explorer.env
# https://github.com/janoside/btc-rpc-explorer/blob/master/.env-sample

# command info
if [ $# -eq 0 ] || [ "$1" = "-h" ] || [ "$1" = "-help" ]; then
 echo "small config script to switch cryptoadvance specter on or off"
 echo "bonus.cryptoadvance-specter.sh [status|on|off]"
 exit 1
fi

source /mnt/hdd/raspiblitz.conf

# show info menu
if [ "$1" = "menu" ]; then

  # get status
  echo "# collecting status info ... (please wait)"
  source <(sudo /home/admin/config.scripts/bonus.cryptoadvance-specter.sh status)

  # get network info
  localip=$(ip addr | grep 'state UP' -A2 | tail -n1 | awk '{print $2}' | cut -f1 -d'/')
  toraddress=https://$(sudo cat /mnt/hdd/tor/cryptoadvance-specter/hostname 2>/dev/null)

  if [ "${runBehindTor}" = "on" ] && [ ${#toraddress} -gt 0 ]; then

    # TOR
    /home/admin/config.scripts/blitz.lcd.sh qr "${toraddress}"
    whiptail --title " Cryptoadvance Specter " --msgbox "Open the following URL in your local web browser:
https://${localip}:25441
You have to accept the self-signed-certificate.
Login with the Pin being Password B. If you have connected to a different Bitcoin RPC Endpoint, the Pin is the configured RPCPassword.
Hidden Service address for TOR Browser (QR see LCD):
${toraddress}\n
" 16 70
    /home/admin/config.scripts/blitz.lcd.sh hide
  else

    # IP + Domain
    whiptail --title " Cryptoadvance Specter " --msgbox "Open the following URL in your local web browser:
https://${localip}:25441
You have to accept the self-signed-certificate.
Login with the Pin being Password B. If you have connected to a different Bitcoin RPC Endpoint, the Pin is the configured RPCPassword.\n
Activate TOR to access the web block explorer from outside your local network.
Unfortunately the camera is currently not usable via Tor, though.
" 12 54
  fi

  echo "please wait ..."
  exit 0
fi

# add default value to raspi config if needed
if ! grep -Eq "^specter=" /mnt/hdd/raspiblitz.conf; then
  echo "specter=off" >> /mnt/hdd/raspiblitz.conf
fi

# status
if [ "$1" = "status" ]; then

  if [ "${specter}" = "on" ]; then
    echo "configured=1"

    # check for error
    isDead=$(sudo systemctl status cryptoadvance-specter | grep -c 'inactive (dead)')
    if [ ${isDead} -eq 1 ]; then
      echo "error='Service Failed'"
      exit 1
    fi

  else
    echo "configured=0"
  fi
  exit 0
fi

# stop service
echo "making sure services are not running"
sudo systemctl stop cryptoadvance-specter 2>/dev/null

# switch on
if [ "$1" = "1" ] || [ "$1" = "on" ]; then
  echo "*** INSTALL Cryptoadvance Specter ***"

  isInstalled=$(sudo ls /etc/systemd/system/cryptoadvance-specter.service 2>/dev/null | grep -c 'cryptoadvance-specter.service')
  if [ ${isInstalled} -eq 0 ]; then

    echo "*** Enable wallets in Bitcoin Core ***"
    sudo sed -i "s/^disablewallet=.*/disablewallet=0/g" /home/bitcoin/.bitcoin/bitcoin.conf
    sudo service bitcoind stop
    sudo service bitcoind start

    echo "*** Installing prerequisites ***"
    sudo apt install -y libusb-1.0.0-dev libudev-dev virtualenv libssl-dev

    # activating Authentication here ...
    echo "*** creating App-config ***"
    cat > /home/admin/config.json <<EOF
{
	"auth":"rpcpasswordaspin"
}
EOF
    sudo mkdir -p /home/bitcoin/.specter
    sudo mv /home/admin/config.json /home/bitcoin/.specter/config.json
    sudo chown -R bitcoin:bitcoin /home/bitcoin/.specter

    echo "*** creating a virtualenv ***"
    sudo -u bitcoin virtualenv --python=python3 /home/bitcoin/.specter/.env

    echo "*** installing specter ***"

    sudo -u bitcoin /home/bitcoin/.specter/.env/bin/python3 -m pip install 'hidapi>=0.7.99,<0.8.0' 'pyaes>=1.6,<2.0'
    sudo -u bitcoin /home/bitcoin/.specter/.env/bin/python3 -m pip install hwi --no-dependencies

    # basically turned the requirement.txt into thses three lines
    # https://raw.githubusercontent.com/cryptoadvance/specter-desktop/v0.4.0/requirements.txt
    sudo -u bitcoin /home/bitcoin/.specter/.env/bin/python3 -m pip install 'certifi==2019.9.11' 'chardet==3.0.4' 'Click==7.0' 'ecdsa>=0.13.3' 'Flask==1.1.1' 'Flask-Login==0.5.0' 'hidapi==0.7.99.post21' 'pyOpenSSL==19.1.0'
    sudo -u bitcoin /home/bitcoin/.specter/.env/bin/python3 -m pip install 'hwi==1.1.0' 'idna==2.8' 'itsdangerous==1.1.0' 'Jinja2==2.10.3' 'libusb1==1.7.1' 'MarkupSafe==1.1.1' 'mnemonic==0.18' 'pbkdf2==1.3' 'pyaes>=1.6.1'
    sudo -u bitcoin /home/bitcoin/.specter/.env/bin/python3 -m pip install 'python-dotenv==0.10.3' 'requests==2.22.0' 'six==1.12.0' 'stem==1.7.1' 'typing-extensions==3.7.4' 'urllib3==1.25.6' 'Werkzeug==0.16.0' 'pyserial==3.4' 'daemonize==2.5.0'

    # install fixed version
    sudo -u bitcoin /home/bitcoin/.specter/.env/bin/python3 -m pip install cryptoadvance.specter==0.4.0 --no-dependencies
    
    # Creating self-signed-certificate
    # Mandatory as the camera doesn't work without https
    echo "*** Creating self-signed certificate ***"
    openssl req -x509 -newkey rsa:4096 -nodes -out /tmp/cert.pem -keyout /tmp/key.pem -days 365 -subj "/C=US/ST=Nooneknows/L=Springfield/O=Dis/CN=www.fakeurl.com"
    sudo mv /tmp/cert.pem /home/bitcoin/.specter
    sudo chown -R bitcoin:bitcoin /home/bitcoin/.specter/cert.pem
    sudo mv /tmp/key.pem /home/bitcoin/.specter
    sudo chown -R bitcoin:bitcoin /home/bitcoin/.specter/key.pem

    # open firewall
    echo "*** Updating Firewall ***"
    sudo ufw allow 25441 comment 'cryptoadvance-specter'
    echo ""

    echo "*** Installing udev-rules for hardware-wallets ***"
    cat > /home/admin/20-hw1.rules <<EOF
 HW.1 / Nano
SUBSYSTEMS=="usb", ATTRS{idVendor}=="2581", ATTRS{idProduct}=="1b7c|2b7c|3b7c|4b7c", TAG+="uaccess", TAG+="udev-acl"
# Blue
SUBSYSTEMS=="usb", ATTRS{idVendor}=="2c97", ATTRS{idProduct}=="0000|0000|0001|0002|0003|0004|0005|0006|0007|0008|0009|000a|000b|000c|000d|000e|000f|0010|0011|0012|0013|0014|0015|0016|0017|0018|0019|001a|001b|001c|001d|001e|001f", TAG+="uaccess", TAG+="udev-acl"
# Nano S
SUBSYSTEMS=="usb", ATTRS{idVendor}=="2c97", ATTRS{idProduct}=="0001|1000|1001|1002|1003|1004|1005|1006|1007|1008|1009|100a|100b|100c|100d|100e|100f|1010|1011|1012|1013|1014|1015|1016|1017|1018|1019|101a|101b|101c|101d|101e|101f", TAG+="uaccess", TAG+="udev-acl"
# Aramis
SUBSYSTEMS=="usb", ATTRS{idVendor}=="2c97", ATTRS{idProduct}=="0002|2000|2001|2002|2003|2004|2005|2006|2007|2008|2009|200a|200b|200c|200d|200e|200f|2010|2011|2012|2013|2014|2015|2016|2017|2018|2019|201a|201b|201c|201d|201e|201f", TAG+="uaccess", TAG+="udev-acl"
# HW2
SUBSYSTEMS=="usb", ATTRS{idVendor}=="2c97", ATTRS{idProduct}=="0003|3000|3001|3002|3003|3004|3005|3006|3007|3008|3009|300a|300b|300c|300d|300e|300f|3010|3011|3012|3013|3014|3015|3016|3017|3018|3019|301a|301b|301c|301d|301e|301f", TAG+="uaccess", TAG+="udev-acl"
# Nano X
SUBSYSTEMS=="usb", ATTRS{idVendor}=="2c97", ATTRS{idProduct}=="0004|4000|4001|4002|4003|4004|4005|4006|4007|4008|4009|400a|400b|400c|400d|400e|400f|4010|4011|4012|4013|4014|4015|4016|4017|4018|4019|401a|401b|401c|401d|401e|401f", TAG+="uaccess", TAG+="udev-acl"
EOF
    cat > /home/admin/51-coinkite.rules <<EOF
# Linux udev support file.
#
# This is a example udev file for HIDAPI devices which changes the permissions
# to 0666 (world readable/writable) for a specific device on Linux systems.
#
# - Copy this file into /etc/udev/rules.d and unplug and re-plug your Coldcard.
# - Udev does not have to be restarted.
#

# probably not needed:
SUBSYSTEMS=="usb", ATTRS{idVendor}=="d13e", ATTRS{idProduct}=="cc10", GROUP="plugdev", MODE="0666"

# required:
# from <https://github.com/signal11/hidapi/blob/master/udev/99-hid.rules>
KERNEL=="hidraw*", ATTRS{idVendor}=="d13e", ATTRS{idProduct}=="cc10", GROUP="plugdev", MODE="0666"
EOF
    cat > /home/admin/51-trezor.rules <<EOF
# Trezor: The Original Hardware Wallet
# https://trezor.io/
#
# Put this file into /etc/udev/rules.d
#
# If you are creating a distribution package,
# put this into /usr/lib/udev/rules.d or /lib/udev/rules.d
# depending on your distribution

# Trezor
SUBSYSTEM=="usb", ATTR{idVendor}=="534c", ATTR{idProduct}=="0001", MODE="0660", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl", SYMLINK+="trezor%n"
KERNEL=="hidraw*", ATTRS{idVendor}=="534c", ATTRS{idProduct}=="0001", MODE="0660", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl"

# Trezor v2
SUBSYSTEM=="usb", ATTR{idVendor}=="1209", ATTR{idProduct}=="53c0", MODE="0660", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl", SYMLINK+="trezor%n"
SUBSYSTEM=="usb", ATTR{idVendor}=="1209", ATTR{idProduct}=="53c1", MODE="0660", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl", SYMLINK+="trezor%n"
KERNEL=="hidraw*", ATTRS{idVendor}=="1209", ATTRS{idProduct}=="53c1", MODE="0660", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl"
EOF
    cat > /home/admin/51-usb-keepkey.rules <<EOF
# KeepKey: Your Private Bitcoin Vault
# http://www.keepkey.com/
# Put this file into /usr/lib/udev/rules.d or /etc/udev/rules.d

# KeepKey HID Firmware/Bootloader
SUBSYSTEM=="usb", ATTR{idVendor}=="2b24", ATTR{idProduct}=="0001", MODE="0666", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl", SYMLINK+="keepkey%n"
KERNEL=="hidraw*", ATTRS{idVendor}=="2b24", ATTRS{idProduct}=="0001",  MODE="0666", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl"

# KeepKey WebUSB Firmware/Bootloader
SUBSYSTEM=="usb", ATTR{idVendor}=="2b24", ATTR{idProduct}=="0002", MODE="0666", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl", SYMLINK+="keepkey%n"
KERNEL=="hidraw*", ATTRS{idVendor}=="2b24", ATTRS{idProduct}=="0002",  MODE="0666", GROUP="plugdev", TAG+="uaccess", TAG+="udev-acl"
EOF

    sudo mv /home/admin/20-hw1.rules /home/admin/51-coinkite.rules /home/admin/51-trezor.rules /home/admin/51-usb-keepkey.rules /etc/udev/rules.d/
    sudo chown root:root /etc/udev/rules.d/*
    sudo udevadm trigger
    sudo udevadm control --reload-rules
    sudo groupadd plugdev
    sudo usermod -aG plugdev bitcoin

    # install service
    echo "*** Install cryptoadvance-specter systemd service ***"
    cat > /home/admin/cryptoadvance-specter.service <<EOF
# systemd unit for Cryptoadvance Specter

[Unit]
Description=cryptoadvance-specter
Wants=${network}d.service
After=${network}d.service

[Service]
ExecStart=/home/bitcoin/.specter/.env/bin/python3 -m cryptoadvance.specter server --host 0.0.0.0 --cert=/home/bitcoin/.specter/cert.pem --key=/home/bitcoin/.specter/key.pem
User=bitcoin
Environment=PATH=/home/bitcoin/.specter/.env/bin:/home/bitcoin/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/sbin:/bin
Restart=always
TimeoutSec=120
RestartSec=30
StandardOutput=null
StandardError=journal

[Install]
WantedBy=multi-user.target
EOF

    sudo mv /home/admin/cryptoadvance-specter.service /etc/systemd/system/cryptoadvance-specter.service
    sudo systemctl enable cryptoadvance-specter
    sudo systemctl start cryptoadvance-specter

    echo "OK - the cryptoadvance-specter service is now enabled and started"
  else 
    echo "cryptoadvance-specter already installed."
  fi

  # setting value in raspi blitz config
  sudo sed -i "s/^specter=.*/specter=on/g" /mnt/hdd/raspiblitz.conf
  
  # TOR hiden service (if needed)
  source /mnt/hdd/raspiblitz.conf
  if [ "${runBehindTor}" = "on" ]; then
    # correct old Hidden Service with port
    sudo sed -i "s/^HiddenServicePort 25441 127.0.0.1:25441/HiddenServicePort 80 127.0.0.1:25441/g" /etc/tor/torrc
    /home/admin/config.scripts/internet.hiddenservice.sh cryptoadvance-specter 80 25441
  fi
  exit 0
fi

# switch off
if [ "$1" = "0" ] || [ "$1" = "off" ]; then

  # setting value in raspi blitz config
  sudo sed -i "s/^specter=.*/specter=off/g" /mnt/hdd/raspiblitz.conf

  isInstalled=$(sudo ls /etc/systemd/system/cryptoadvance-specter.service 2>/dev/null | grep -c 'cryptoadvance-specter.service')
  if [ ${isInstalled} -eq 1 ]; then
    echo "*** REMOVING Cryptoadvance Specter ***"
    sudo systemctl stop cryptoadvance-specter
    sudo systemctl disable cryptoadvance-specter
    sudo rm /etc/systemd/system/cryptoadvance-specter.service

    if whiptail --defaultno --yesno "Do you want to delete all Data related to specter? This includes also Bitcoin-Core-Wallets managed by specter?" 0 0; then
      echo "*** Removing wallets in core ***"
      bitcoin-cli listwallets | jq -r .[] | tail -n +2
      for i in $(bitcoin-cli listwallets | jq -r .[] | tail -n +2) 
      do  
	name=$(echo $i | cut -d"/" -f2)
       	bitcoin-cli unloadwallet specter/$name 
      done
      sudo rm -rf /home/bitcoin/.bitcoin/specter

      echo "*** Removing /home/bitcoin/.specter ***"
      sudo rm -rf /home/bitcoin/.specter
    fi

    echo "OK Cryptoadvance Specter removed."
  else 
    echo "Cryptoadvance Specter is not installed."
  fi
  exit 0
fi

echo "FAIL - Unknown Parameter $1"
exit 1