#!/bin/sh

# This script installs lnd.
#
# Quick install: `curl https://raw.githubusercontent.com/mvanderh/pragmatic-lightning/master/install.sh | sh`
#
# This script will install lnd to the directory you're in. To install
# somewhere else (e.g. /usr/local/bin), cd there and make sure you can write to
# that directory, e.g. `cd /usr/local/bin; curl https://raw.githubusercontent.com/mvanderh/pragmatic-lightning/master/install.sh | sudo sh`
#
# Acknowledgments:
#   - Shamelessly copied from https://getmic.ro/

set -e
set -u
set -o pipefail

cat <<-EOF

==============================================================
    Installing Pragmatic Lightning care package..
    https://mvanderh.github.io/pragmatic-lightning

    LND BINARIES, PRELOADED BLOCKCHAIN AND CONVENIENCE SCRIPTS
==============================================================

EOF

PRELOADED_DATA_URL=https://www.dropbox.com/s/w86y21o0lkerb20/lnd_data.tar.gz?dl=0

function githubLatestTag {
    finalUrl=$(curl "https://github.com/$1/releases/latest" -s -L -I -o /dev/null -w '%{url_effective}')
    echo "${finalUrl##*v}"
}


platform=''
machine=$(uname -m)

if [[ "$OSTYPE" == "linux-gnu"* ]]; then
  if [[ "$machine" == "arm"* || "$machine" == "aarch"* ]]; then
    platform='linux-armv7'
  elif [[ "$machine" == *"86" ]]; then
    platform='linux-386'
  elif [[ "$machine" == *"64" ]]; then
    platform='linux-amd64'
  fi
elif [[ "$OSTYPE" == "darwin"* ]]; then
  if [[ "$machine" == *"86" ]]; then
    platform='darwin-386'
  elif [[ "$machine" == *"64" ]]; then
    platform='darwin-amd64'
  fi
elif [[ "$OSTYPE" == "freebsd"* ]]; then
  if [[ "$machine" == *"64" ]]; then
    platform='freebsd-amd64'
  elif [[ "$machine" == *"86" ]]; then
    platform='freebsd-386'
  fi
elif [[ "$OSTYPE" == "openbsd"* ]]; then
  if [[ "$machine" == *"64" ]]; then
    platform='openbsd-amd64'
  elif [[ "$machine" == *"86" ]]; then
    platform='openbsd-386'
  fi
elif [[ "$OSTYPE" == "netbsd"* ]]; then
  if [[ "$machine" == *"64" ]]; then
    platform='netbsd-amd64'
  elif [[ "$machine" == *"86" ]]; then
    platform='netbsd-386'
  fi
fi

echo "-> Downloading LND and LNCLI binaries"

if test "x$platform" = "x"; then
  cat <<EOM
/=====================================\\
|      COULD NOT DETECT PLATFORM      |
\\=====================================/

Uh oh! We couldnt automatically detect your operating system.

To continue with installation, please choose from one of the following values:

- freebsd32
- freebsd64
- linux-arm
- linux32
- linux64
- netbsd32
- netbsd64
- openbsd32
- openbsd64
- osx
EOM
  read -rp "> " platform
else
  echo "-> Detected platform: $platform"
fi

TAG=$(githubLatestTag lightningnetwork/lnd)

echo "-> Downloading https://github.com/lightningnetwork/lnd/releases/download/v$TAG/lnd-$platform-v$TAG.tar.gz"
curl -L "https://github.com/lightningnetwork/lnd/releases/download/v$TAG/lnd-$platform-v$TAG.tar.gz" > lnd.tar.gz

dirname="lnd-$platform-v$TAG"
tar -xvzf lnd.tar.gz "$dirname"
mv "$dirname" lnd/

rm lnd.tar.gz
rm -rf "$dirname"

echo "-> Downloading testnet blockchain data"
echo "-> Downloading $PRELOADED_DATA_URL"
curl -L -o lnd_data.tar.gz "$PRELOADED_DATA_URL"
tar xvf lnd_data.tar.gz

echo "-> Copying data and configs for client and server node"
cp -R lnd_data lnd_server
mv lnd_server/lnd.server.conf lnd_server/lnd.conf

cp -R lnd_data lnd_client
mv lnd_client/lnd.client.conf lnd_client/lnd.conf

rm -rf lnd_data/
rm lnd_data.tar.gz

echo "-> Creating convenience scripts"

cat <<-EOF > ./server-lnd.sh
#!/bin/sh
exec ./lnd/lnd --lnddir lnd_server \$@
EOF
cat <<-EOF > ./server-lncli.sh
#!/bin/sh
exec ./lnd/lncli --lnddir lnd_server -n testnet \$@
EOF
cat <<-EOF > ./client-lnd.sh
#!/bin/sh
exec ./lnd/lnd --lnddir lnd_client \$@
EOF
cat <<-EOF > ./client-lncli.sh
#!/bin/sh
exec ./lnd/lncli --lnddir lnd_client --rpcserver=localhost:10010 -n testnet \$@
EOF

chmod +x server-lnd.sh
chmod +x server-lncli.sh
chmod +x client-lnd.sh
chmod +x client-lncli.sh

cat <<-EOF

=====
DONE!
=====

LND (Lightning Network Daemon) and LNCLI (Lightning Network Command Line Interface) have been downloaded to ./lnd.
Testnet blockchain data has been preloaded.

To run the server node,
./server-lnd.sh

To run commands on the server node,
./server-lncli.sh <command..>

To run the client node,
./client-lnd.sh

To run commands on the client node,
./client-lncli.sh <command..>

EOF