## Install BTCPayServer on the RaspiBlitz
# Based on: https://gist.github.com/normandmickey/3f10fc077d15345fb469034e3697d0d0 

# to download and run: 
# wget https://raw.githubusercontent.com/openoms/bitcoin-tutorials/master/BTCPayServer/btcpay_to_blitz.sh && bash btcpay_to_blitz.sh

echo ""
echo "***"
echo "Confirm that the port 80, 443 and 9735 are forwarded to the IP of the RaspiBlitz by pressing [ENTER]" 
read key

echo ""
echo "***"
echo "Type the domain/ddns you want to use for BTCPayServer and press [ENTER]"
read YOUR_DOMAIN

echo ""
echo "***"
echo "Type an email address that will be used to register the SSL certificate and press [ENTER]"
read YOUR_EMAIL

echo ""
echo "***"
echo "Creating the btcpay user"
echo "***"
echo ""
sudo adduser --disabled-password --gecos "" btcpay 2>/dev/null
cd /home/btcpay

# store BTCpay data on HDD
sudo mkdir /mnt/hdd/.btcpayserver 2>/dev/null

sudo mv -f /home/admin/.btcpayserver /mnt/hdd/ 2>/dev/null
sudo rm -rf /home/admin/.btcpayserver
sudo mv -f /home/btcpay/.btcpayserver /mnt/hdd/ 2>/dev/null

sudo chown -R btcpay:btcpay /mnt/hdd/.btcpayserver
sudo ln -s /mnt/hdd/.btcpayserver /home/btcpay/ 2>/dev/null

# clean when installed as admin
sudo rm -f /home/admin/dotnet-sdk*
sudo rm -f /home/admin/dotnet-sdk*
sudo rm -f /home/admin/.nbxplorer/Main/settings.config

# cleanup previous installs
sudo rm -f /home/btcpay/dotnet-sdk*
sudo rm -f /home/btcpay/aspnetcore*
sudo rm -rf /home/btcpay/dotnet
sudo rm -f /usr/local/bin/dotnet

sudo systemctl stop nbxplorer 2>/dev/null
sudo systemctl disable nbxplorer 2>/dev/null
sudo rm -f /home/btcpay/.nbxplorer/Main/settings.config
sudo rm -f /etc/systemd/system/nbxplorer.service

sudo systemctl stop btcpayserver 2>/dev/null
sudo systemctl disable btcpayserver 2>/dev/null
sudo rm -f /home/btcpay/.btcpayserver/Main/settings.config
sudo rm -f /etc/systemd/system/btcpayserver.service
sudo rm -f /etc/nginx/sites-available/btcpayserver

echo ""
echo "***"
echo "Installing .NET"
echo "***"
echo ""

# download dotnet-sdk
sudo apt-get -y install libunwind8 gettext libssl1.0
sudo -u btcpay wget https://download.visualstudio.microsoft.com/download/pr/94409a9a-41e3-4df9-83bc-9e23ed96abaf/2b75460d9a8eef8361c01bafc1783fab/dotnet-sdk-2.1.607-linux-arm.tar.gz
# check binary is was not manipulated (checksum test)
dotnetName="dotnet-sdk-2.1.607-linux-arm.tar.gz"
binaryChecksum="2cd8fa250e6a0e81faf409e7dc4f6d581117f565d58cff48b31f457e7cafc7f3cfe0de0df2b1c5d035733879750eb2af22fcc950720a7a7192e4221318052838"
actualChecksum=$(sha512sum /home/btcpay/${dotnetName} | cut -d " " -f1)
if [ "${actualChecksum}" != "${binaryChecksum}" ]; then
  echo "!!! FAIL !!! Downloaded ${dotnetName} not matching SHA512 checksum: ${binaryChecksum}"
  exit 1
fi

# download aspnetcore-runtime
sudo -u btcpay wget https://download.visualstudio.microsoft.com/download/pr/9c563df7-736b-49ce-bd17-e739f3765541/e93dd1eff909e59a7ba72784a64dc031/aspnetcore-runtime-2.1.14-linux-arm.tar.gz
# check binary is was not manipulated (checksum test)
aspnetcoreName="aspnetcore-runtime-2.1.14-linux-arm.tar.gz"
binaryChecksum="f4500187bf135254a03b5eb4105b8ce20f71d71e0f08c2c2ec914920f80435b7b36351c3f9c15504d0b1c2187b904c8283db67a2b60ebff374b058641153aaac"
actualChecksum=$(sha512sum /home/btcpay/${aspnetcoreName} | cut -d " " -f1)
if [ "${actualChecksum}" != "${binaryChecksum}" ]; then
  echo "!!! FAIL !!! Downloaded ${aspnetcoreName} not matching SHA512 checksum: ${binaryChecksum}"
  exit 1
fi

sudo -u btcpay mkdir /home/btcpay/dotnet
sudo -u btcpay tar -xvf ${dotnetName} -C /home/btcpay/dotnet
sudo -u btcpay tar -xvf ${aspnetcoreName} -C /home/btcpay/dotnet

# opt out of telemetry
echo "DOTNET_CLI_TELEMETRY_OPTOUT=1" | sudo tee -a /etc/environment

sudo ln -s /home/btcpay/dotnet/dotnet /usr/local/bin
sudo -u btcpay /home/btcpay/dotnet/dotnet --info

echo ""
echo "***"
echo "Installing NBXplorer"
echo "***"
echo ""

cd /home/btcpay
sudo -u btcpay git clone https://github.com/dgarage/NBXplorer.git
cd NBXplorer
# checkout from last known to work commit:
# https://github.com/dgarage/NBXplorer/commit/6069d0a06aae467cab41ea509450222d45fb9c04
# check https://github.com/dgarage/NBXplorer/commits/master
sudo -u btcpay git checkout 6069d0a06aae467cab41ea509450222d45fb9c04
sudo -u btcpay ./build.sh

echo "
[Unit]
Description=NBXplorer daemon
Requires=bitcoind.service
After=bitcoind.service

[Service]
ExecStart=/usr/local/bin/dotnet \"/home/btcpay/NBXplorer/NBXplorer/bin/Release/netcoreapp2.1/NBXplorer.dll\" -c /home/btcpay/.nbxplorer/Main/settings.config
User=btcpay
Group=btcpay
Type=simple
PIDFile=/run/nbxplorer/nbxplorer.pid
Restart=on-failure

PrivateTmp=true
ProtectSystem=full
NoNewPrivileges=true
PrivateDevices=true

[Install]
WantedBy=multi-user.target
" | sudo tee -a /etc/systemd/system/nbxplorer.service

sudo systemctl daemon-reload
# restart to create settings.config if was running already
sudo systemctl restart nbxplorer
sudo systemctl enable nbxplorer
sudo systemctl start nbxplorer

echo "Checking for nbxplorer config"
while [ ! -f "/home/btcpay/.nbxplorer/Main/settings.config" ]
    do
      echo "Waiting for nbxplorer to start - CTRL+C to abort"
      sleep 10
done

echo ""
echo "***"
echo "getting RPC credentials from the bitcoin.conf"
RPC_USER=$(sudo cat /mnt/hdd/bitcoin/bitcoin.conf | grep rpcuser | cut -c 9-)
PASSWORD_B=$(sudo cat /mnt/hdd/bitcoin/bitcoin.conf | grep rpcpassword | cut -c 13-)
#sudo mv /home/btcpay/.nbxplorer/Main/settings.config /home/admin/settings.config
#sudo chown admin:admin /home/admin/settings.config
sudo mv /home/btcpay/.nbxplorer/Main/settings.config /home/btcpay/.nbxplorer/Main/settings.config.backup
touch /home/admin/settings.config
sudo chmod 600 /home/admin/settings.config || exit 1
cat >> /home/admin/settings.config <<EOF
btc.rpc.user=raspibolt
btc.rpc.password=$PASSWORD_B
EOF
sudo mv /home/admin/settings.config /home/btcpay/.nbxplorer/Main/settings.config
sudo chown btcpay:btcpay /home/btcpay/.nbxplorer/Main/settings.config
sudo systemctl restart nbxplorer

echo ""
echo "***"
echo "Installing BTCPayServer"
echo "***"
echo ""

cd /home/btcpay
sudo -u btcpay git clone https://github.com/btcpayserver/btcpayserver.git
cd btcpayserver
# https://github.com/btcpayserver/btcpayserver/releases 
sudo -u btcpay git reset --hard v1.0.3.144 
sudo -u btcpay ./build.sh

echo "
[Unit]
Description=BtcPayServer daemon
Requires=btcpayserver.service
After=nbxplorer.service

[Service]
ExecStart=/usr/local/bin/dotnet run --no-launch-profile --no-build -c Release -p \"/home/btcpay/btcpayserver/BTCPayServer/BTCPayServer.csproj\" -- \$@
User=btcpay
Group=btcpay
Type=simple
PIDFile=/run/btcpayserver/btcpayserver.pid
Restart=on-failure

[Install]
WantedBy=multi-user.target
" | sudo tee -a /etc/systemd/system/btcpayserver.service

sudo systemctl daemon-reload
sudo systemctl enable btcpayserver
sudo systemctl start btcpayserver

# set thumbprint
FINGERPRINT=$(openssl x509 -noout -fingerprint -sha256 -inform pem -in /home/admin/.lnd/tls.cert | cut -c 20-)
sudo cp /mnt/hdd/lnd/data/chain/bitcoin/mainnet/admin.macaroon /home/btcpay/admin.macaroon
sudo chown btcpay:btcpay /home/btcpay/admin.macaroon
sudo chmod 600 /home/btcpay/admin.macaroon
echo "
### Global settings ###
network=mainnet

### Server settings ###
port=23000
bind=127.0.0.1
externalurl=https://$YOUR_DOMAIN

### NBXplorer settings ###
BTC.explorer.url=http://127.0.0.1:24444/
BTC.lightning=type=lnd-rest;server=https://127.0.0.1:8080/;macaroonfilepath=/home/btcpay/admin.macaroon;certthumbprint=$FINGERPRINT
" | sudo -u btcpay tee -a /home/btcpay/.btcpayserver/Main/settings.config

sudo systemctl restart btcpayserver

echo ""
echo "***"
echo "Setting up Nginx and Certbot"
echo "***"
echo ""

# install nginx and certbot
sudo apt-get install nginx-full certbot -y

sudo ufw allow 80
sudo ufw allow 443

# get SSL cert
sudo systemctl stop certbot 2>/dev/null
sudo certbot certonly -a standalone -m $YOUR_EMAIL --agree-tos -d $YOUR_DOMAIN --pre-hook "service nginx stop" --post-hook "service nginx start"

# set nginx
sudo rm -f /etc/nginx/sites-enabled/default

echo "
# If we receive X-Forwarded-Proto, pass it through; otherwise, pass along the
# scheme used to connect to this server
map \$http_x_forwarded_proto \$proxy_x_forwarded_proto {
  default \$http_x_forwarded_proto;
  ''      \$scheme;
}
# If we receive X-Forwarded-Port, pass it through; otherwise, pass along the
# server port the client connected to
map \$http_x_forwarded_port \$proxy_x_forwarded_port {
  default \$http_x_forwarded_port;
  ''      \$server_port;
}
# If we receive Upgrade, set Connection to \"upgrade\"; otherwise, delete any
# Connection header that may have been passed to this server
map \$http_upgrade \$proxy_connection {
  default upgrade;
  '' close;
}
# Apply fix for very long server names
#server_names_hash_bucket_size 128;
# Prevent Nginx Information Disclosure
server_tokens off;
# Default dhparam
# Set appropriate X-Forwarded-Ssl header
map \$scheme \$proxy_x_forwarded_ssl {
  default off;
  https on;
}

gzip_types text/plain text/css application/javascript application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;
log_format vhost '\$host \$remote_addr - \$remote_user [\$time_local] '
                 '\"\$request\" \$status \$body_bytes_sent '
                 '\"\$http_referer\" \"\$http_user_agent\"';
access_log off;
# HTTP 1.1 support
proxy_http_version 1.1;
proxy_buffering off;
proxy_set_header Host \$http_host;
proxy_set_header Upgrade \$http_upgrade;
proxy_set_header Connection \$proxy_connection;
proxy_set_header X-Real-IP \$remote_addr;
proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto \$proxy_x_forwarded_proto;
proxy_set_header X-Forwarded-Ssl \$proxy_x_forwarded_ssl;
proxy_set_header X-Forwarded-Port \$proxy_x_forwarded_port;
# Mitigate httpoxy attack (see README for details)
proxy_set_header Proxy \"\";


server {
    listen 80 default_server;
    server_name _;
    return 301 https://\$host\$request_uri;
}

server {
  listen 443 ssl;
  server_name $YOUR_DOMAIN;
  ssl on;

  ssl_certificate /etc/letsencrypt/live/$YOUR_DOMAIN/fullchain.pem;
  ssl_certificate_key /etc/letsencrypt/live/$YOUR_DOMAIN/privkey.pem;
  ssl_session_timeout 1d;
  ssl_session_cache shared:SSL:50m;
  ssl_session_tickets off;
  ssl_protocols TLSv1.1 TLSv1.2;
  ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!3DES:!MD5:!PSK';
  ssl_prefer_server_ciphers on;
  ssl_stapling on;
  ssl_stapling_verify on;
  ssl_trusted_certificate /etc/letsencrypt/live/$YOUR_DOMAIN/chain.pem;

  location / {
    proxy_set_header Host \$host;
    proxy_set_header X-Real-IP \$remote_addr;
    proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto \$scheme;
    proxy_pass http://localhost:23000;
  }
}
" | sudo tee -a /etc/nginx/sites-available/btcpayserver

sudo ln -s /etc/nginx/sites-available/btcpayserver /etc/nginx/sites-enabled/ 2>/dev/null

sudo systemctl restart nginx

echo ""
echo "***"
echo "Setting up certbot-auto renewal service"
echo "***"
echo ""

sudo rm -f /etc/systemd/system/certbot.timer
echo "
[Unit]
Description=Certbot-auto renewal service

[Timer]
OnBootSec=20min
OnCalendar=*-*-* 4:00:00

[Install]
WantedBy=timers.target
" | sudo tee -a /etc/systemd/system/certbot.timer

sudo rm -f /etc/systemd/system/certbot.service
echo "
[Unit]
Description=Certbot-auto renewal service
After=bitcoind.service

[Service]
WorkingDirectory=/home/admin/
ExecStart=sudo certbot renew --pre-hook \"service nginx stop\" --post-hook \"service nginx start\"

User=admin
Group=admin
Type=simple
KillMode=process
TimeoutSec=60
Restart=always
RestartSec=60
" | sudo tee -a /etc/systemd/system/certbot.service

sudo systemctl enable certbot.timer

# Hidden Service for BTCPay if Tor active
source /mnt/hdd/raspiblitz.conf
if [ "${runBehindTor}" = "on" ]; then
    isElectrsTor=$(sudo cat /etc/tor/torrc 2>/dev/null | grep -c 'btcpay')
    if [ ${isElectrsTor} -eq 0 ]; then
        echo "
# Hidden Service for BTCPayServer
HiddenServiceDir /mnt/hdd/tor/btcpay
HiddenServiceVersion 3
HiddenServicePort 80 127.0.0.1:23000
" | sudo tee -a /etc/tor/torrc

        sudo systemctl restart tor
        sudo systemctl restart tor@default
    fi
    TOR_ADDRESS=$(sudo cat /mnt/hdd/tor/btcpay/hostname)
    echo ""
    echo "***"
    echo "The Tor Hidden Service address for BTCPayServer is:"
    echo "$TOR_ADDRESS"
    echo "***"
    echo "" 
fi

echo ""
echo "Visit your BTCpayServer instance on https://$YOUR_DOMAIN"
