From 9bf7f503d9d68f1024e64aa87cc7f23239e2ba0e Mon Sep 17 00:00:00 2001
From: Dennis Reimann <mail@dennisreimann.de>
Date: Tue, 30 Jun 2020 11:13:11 +0200
Subject: [PATCH] Add bonus script: kindle-display

Added my [Bitcoin Status Display](https://github.com/dennisreimann/kindle-display). Let me know if this needs more documentation or integration.
---
 README.md                                     |   1 +
 home.admin/_bootstrap.provision.sh            |   9 +
 .../config.scripts/bonus.kindle-display.sh    | 162 ++++++++++++++++++
 3 files changed, 172 insertions(+)
 create mode 100755 home.admin/config.scripts/bonus.kindle-display.sh

diff --git a/README.md b/README.md
index a3754e26d..fc926abf4 100644
--- a/README.md
+++ b/README.md
@@ -34,6 +34,7 @@ There are further Services that can be switched on:
 * **ThunderHub** (Lightning Node Manager WebUI) [details](https://www.thunderhub.io/)
 * **Faraday** (Channel Analysis & Recommendations CLI) [details](https://github.com/lightninglabs/faraday/blob/master/README.md)
 * **Balance Of Satoshis** (Commands for working with LND balances) [details](https://github.com/alexbosworth/balanceofsatoshis/blob/master/README.md)
+* **Kindle Display** (Bitcoin Status Display made with a jailbroken Kindle) [details](https://github.com/dennisreimann/kindle-display)
 
 You can connect the following Wallet-Apps to your RaspiBlitz:
 
diff --git a/home.admin/_bootstrap.provision.sh b/home.admin/_bootstrap.provision.sh
index bebfb9cc2..ce477c946 100644
--- a/home.admin/_bootstrap.provision.sh
+++ b/home.admin/_bootstrap.provision.sh
@@ -453,6 +453,15 @@ else
   echo "Provisioning letsencrypt - keep default" >> ${logFile}
 fi
 
+# kindle-display
+if [ "${kindleDisplay}" = "on" ]; then
+  echo "Provisioning kindle-display - run config script" >> ${logFile}
+  sudo sed -i "s/^message=.*/message='Setup kindle-display'/g" ${infoFile}
+  sudo -u admin /home/admin/config.scripts/bonus.kindle-display.sh on >> ${logFile} 2>&1
+else
+  echo "Provisioning kindle-display - keep default" >> ${logFile}
+fi
+
 
 
 # replay backup LND conf & tlscerts
diff --git a/home.admin/config.scripts/bonus.kindle-display.sh b/home.admin/config.scripts/bonus.kindle-display.sh
new file mode 100755
index 000000000..b8041386b
--- /dev/null
+++ b/home.admin/config.scripts/bonus.kindle-display.sh
@@ -0,0 +1,162 @@
+#!/bin/bash
+
+# https://github.com/dennisreimann/kindle-display
+
+USERNAME=kindledisplay
+SERVER_PORT=3030
+APP_DATA_DIR=/mnt/hdd/app-data/kindle-display
+HOME_DIR=/home/$USERNAME
+CONFIG_FILE=$APP_DATA_DIR/.env
+APP_ROOT_DIR=$HOME_DIR/kindle-display
+APP_SERVER_DIR=$APP_ROOT_DIR/server
+CRON_FILE=$APP_SERVER_DIR/cron.sh
+
+# command info
+if [ $# -eq 0 ] || [ "$1" = "-h" ] || [ "$1" = "-help" ]; then
+ echo "small config script to switch kindle-display on or off"
+ echo "bonus.kindle-display.sh [on|off]"
+ exit 1
+fi
+
+source /mnt/hdd/raspiblitz.conf
+
+# switch on
+if [ "$1" = "1" ] || [ "$1" = "on" ]; then
+  echo "*** INSTALL KINDLE-DISPLAY ***"
+
+  isInstalled=$(sudo ls $HOME_DIR 2>/dev/null | grep -c 'kindle-display')
+  if [ ${isInstalled} -eq 0 ]; then
+    # install dependencies
+    sudo apt install -y firefox-esr pngcrush jo
+
+    # install nodeJS
+    /home/admin/config.scripts/bonus.nodejs.sh
+
+    # add user
+    sudo adduser --disabled-password --gecos "" $USERNAME
+
+    # install kindle-display
+    cd $HOME_DIR
+    sudo -u $USERNAME git clone https://github.com/dennisreimann/kindle-display.git
+    cd kindle-display/server
+    sudo -u $USERNAME npm install
+
+    # setup kindle-display config
+    RPC_USER=$(sudo cat /mnt/hdd/${network}/${network}.conf | grep rpcuser | cut -c 9-)
+    RPC_PASS=$(sudo cat /mnt/hdd/${network}/${network}.conf | grep rpcpassword | cut -c 13-)
+
+    sudo mkdir $APP_DATA_DIR
+    sudo chown $USERNAME:$USERNAME $APP_DATA_DIR
+
+    configFile=/home/admin/kindle-display.env
+    touch $configFile
+    sudo chmod 600 $configFile || exit 1
+    cat > $configFile <<EOF
+# Server port
+DISPLAY_SERVER_PORT=$SERVER_PORT
+DISPLAY_BITCOIN_RPC_USER="$RPC_USER"
+DISPLAY_BITCOIN_RPC_PASS="$RPC_PASS"
+# BTCPay Settings for rate fetching
+BTCPAY_HOST="https://my.btcpayserver.com"
+# Generate API via Store > Access Tokens > Legacy API Keys
+BTCPAY_API_TOKEN="myBtcPayLegacyApiKey"
+EOF
+    sudo mv $configFile $CONFIG_FILE
+    sudo chown $USERNAME:$USERNAME $CONFIG_FILE
+    sudo -u $USERNAME ln -s $CONFIG_FILE $APP_SERVER_DIR/.env
+
+    # generate initial data
+    sudo -u $USERNAME $APP_SERVER_DIR/data.sh
+
+    # open firewall
+    sudo ufw allow $SERVER_PORT comment 'kindle-display HTTP'
+
+    # install service
+    cat > /home/admin/kindle-display.service <<EOF
+# systemd unit for kindle-display
+
+[Unit]
+Description=kindle-display
+Wants=${network}d.service
+After=${network}d.service
+
+[Service]
+WorkingDirectory=${APP_SERVER_DIR}
+ExecStart=/usr/bin/npm start
+User=$USERNAME
+
+# Restart on failure but no more than 2 time every 10 minutes (600 seconds). Otherwise stop
+Restart=on-failure
+StartLimitIntervalSec=600
+StartLimitBurst=2
+
+[Install]
+WantedBy=multi-user.target
+EOF
+    sudo mv /home/admin/kindle-display.service /etc/systemd/system/kindle-display.service
+    sudo systemctl enable kindle-display
+    sudo systemctl start kindle-display
+
+    # generate initial screenshot
+    sudo -u $USERNAME $CRON_FILE
+
+    echo "OK - the KINDLE-DISPLAY script is now installed."
+    echo ""
+    echo "Switch to the '$USERNAME' user and adapt the settings in $CONFIG_FILE"
+
+    # setting value in raspi blitz config
+    sudo sed -i "s/^kindleDisplay=.*/kindleDisplay=on/g" /mnt/hdd/raspiblitz.conf
+  else
+    echo "KINDLE-DISPLAY already installed."
+  fi
+
+  cron_count=$(sudo -u $USERNAME crontab -l | grep "$CRON_FILE" -c)
+  if [ "${cron_count}" = "0" ]; then
+    echo ""
+    echo "You might want to set up a cronjob to run the script in regular intervals."
+    echo "As the '$USERNAME' user you can run the 'crontab -e' command."
+    echo ""
+    echo "Here is an example for updating every five minutes ..."
+    echo ""
+    echo "SHELL=/bin/bash"
+    echo "PATH=/bin:/usr/bin:/usr/local/bin"
+    echo "*/5 * * * * /bin/bash $CRON_FILE"
+  fi
+
+  exit 0
+fi
+
+# switch off
+if [ "$1" = "0" ] || [ "$1" = "off" ]; then
+  echo "*** UNINSTALL KINDLE-DISPLAY ***"
+  isInstalled=$(sudo ls $HOME_DIR 2>/dev/null | grep -c 'kindle-display')
+
+  if [ ${isInstalled} -eq 1 ]; then
+    echo "*** REMOVING KINDLE-DISPLAY ***"
+
+    # setting value in raspi blitz config
+    sudo sed -i "s/^kindleDisplay=.*/kindleDisplay=off/g" /mnt/hdd/raspiblitz.conf
+
+    # uninstall service
+    sudo systemctl disable kindle-display
+    sudo rm /etc/systemd/system/kindle-display.service
+
+    # close port on firewall
+    sudo ufw deny $SERVER_PORT
+
+    # remove config
+    sudo rm -rf $APP_DATA_DIR
+
+    # delete user and home directory
+    sudo userdel -rf $USERNAME
+
+    echo "OK KINDLE-DISPLAY removed."
+  else
+    echo "KINDLE-DISPLAY is not installed."
+  fi
+
+  exit 0
+fi
+
+echo "FAIL - Unknown Parameter $1"
+exit 1