install

#!/usr/bin/env bash

set -o pipefail

source ./lib/functions.sh

mode="install"
if [ -x "$(command -v ipfs)" ]; then
  ask ">>> IPFS already installed. Should it be updated?" || exit 0
  mode="update"
fi

arm_type="? (unknown ARM system)"
rpi_revision=`sed -rn 's/Revision\s+\:\s+([0-9a-z_\-\s\,\(\)]+)/\1/p' /proc/cpuinfo`

if [[ $rpi_revision == *"900092"* ]]; then
  arm_type="Raspberry Pi model zero"
elif [[ $rpi_revision == *"00"* ]]; then
  arm_type="Raspberry Pi 1"
elif [[ $rpi_revision == *"a01041"* || $rpi_revision == *"a21041"* ]]; then
  arm_type="Raspberry Pi 2"
elif [[ $rpi_revision == *"a02082"* || $rpi_revision = *"a22082"* ]]; then
  arm_type="Raspberry Pi 3"
fi

echo ">>> Starting installation on ARM device compatible with $arm_type"

# Download and install IPFS
ipfs_arch=${2-"linux-arm"}
ipfs_version=$(curl -s https://dist.ipfs.io/go-ipfs/versions | tail -1)
ipfs_version=${1-$ipfs_version}
ipfs_version="v${ipfs_version#v}"

echo ">>> Installing IPFS version $ipfs_version"

tar_gz_destination=/tmp/go-ipfs_${ipfs_version}_${ipfs_arch}.tar.gz
wget "https://dist.ipfs.io/go-ipfs/${ipfs_version}/go-ipfs_${ipfs_version}_${ipfs_arch}.tar.gz" \
  -q --show-progress \
  -O $tar_gz_destination

if [ ! -f $tar_gz_destination ]; then
  echo ">>> Failed to download IPFS"
  exit 1
fi

ipfs_destination=/usr/local/bin/ipfs
tar xzf $tar_gz_destination -C /tmp
sudo install /tmp/go-ipfs/ipfs $ipfs_destination

echo ">>> Starting IPFS"

# Maybe initialize IPFS
[ ! -d ~/.ipfs ] && ipfs init

# Install and enable bring-up configurations for IPFS daemon
init_system=$(get_init_system)
ipfs_path=$HOME/.ipfs
ipfs_user=$(whoami)
ipfs_group=$(id -gn)

if [ $init_system == "systemd" ]; then
  cat ./templates/ipfs-daemon.service.tpl | \
  sed "s|{{ipfs_path}}|${ipfs_path}|g" | \
  sed "s|{{ipfs_user}}|${ipfs_user}|g" | \
  sed "s|{{ipfs_group}}|${ipfs_group}|g" | \
  sudo tee /lib/systemd/system/ipfs-daemon.service > /dev/null

  sudo systemctl daemon-reload
  if [ "$mode" == "install" ]; then
    sudo systemctl enable --now ipfs-daemon
  elif [ "$mode" == "update" ]; then
    sudo systemctl restart ipfs-daemon
  fi
elif [ $init_system == "upstart" ]; then
  cat ./templates/ipfs-daemon.conf.tpl | \
  sed "s|{{ipfs_path}}|${ipfs_path}|g" | \
  sed "s|{{ipfs_user}}|${ipfs_user}|g" | \
  sudo tee /etc/init/ipfs-daemon.conf > /dev/null

  sudo initctl reload-configuration
  if [ "$mode" == "install" ]; then
    sudo service ipfs-daemon start
  elif [ "$mode" == "update" ]; then
    sudo service ipfs-daemon stop
    sudo service ipfs-daemon start
  fi
else
  echo ">>> Unable to detect init system - you don't seem to be using systemd or upstart. The IPFS daemon will have to be controlled manually."
fi

rm $tar_gz_destination

echo ">>> All done."