#!/bin/bash
########################################################################
{ # this ensures the entire script is downloaded #
MY_PATH="`dirname \"$0\"`"              # relative
MY_PATH="`( cd \"$MY_PATH\" && pwd )`"  # absolutized and normalized
ME="${0##*/}"

# CHECK not root user !!
if [ "$EUID" -eq 0 ]
  then echo -e "${c_red}DO NOT EXECUTE AS root. Choose a user for your Astroport Station (we like pi)$c_"
  exit 1
else echo -e "${c_yellow}OK $USER, let's go!$c_";
fi

# Ask user password on start
sudo true

## Error funciton
err() {
	echo "${c_red}$1$c_"
	exit 1
}

# CHECK if daemon is already running
if [[ $(ps auxf --sort=+utime | grep -w ipfs | grep -v -E 'color=auto|grep' | tail -n 1 | cut -d " " -f 1) ]]; then
	echo "ipfs daemon already running...! Must STOP ipfs AND remove ~/.ipfs to install again !!"
	ipfs id && echo "ipfs swarm peers: " && ipfs swarm peers
	echo "ipfs bootstrap list: " && ipfs bootstrap list
	echo "Please RUN : sudo systemctl stop ipfs"
	exit 1
fi

[[ -d ~/.ipfs ]] && echo "IPFS install exist! Please remove or backup before executing this script" && exit 1

echo -e "${c_yellow}Astroport IPFS Layer installation...$c_"

# CHECK node IP isLAN?
myIP=$(hostname -I | awk '{print $1}')
isLAN=$(echo $myIP | grep -E "/(^127\.)|(^192\.168\.)|(^10\.)|(^172\.1[6-9]\.)|(^172\.2[0-9]\.)|(^172\.3[0-1]\.)|(^::1$)|(^[fF][cCdD])/")

MACHINE_TYPE=`uname -m`

if [ ${MACHINE_TYPE} == 'x86_64' ]; then
	curl -s https://dist.ipfs.io/ipfs-update/v1.5.2/ipfs-update_v1.5.2_linux-amd64.tar.gz -o $MY_PATH/ipfs-update.tar.gz
elif [ ${MACHINE_TYPE:0:3} == 'arm' ]; then
	curl -s https://dist.ipfs.io/ipfs-update/v1.5.2/ipfs-update_v1.5.2_linux-arm.tar.gz -o $MY_PATH/ipfs-update.tar.gz
else
	[ ! -f $MY_PATH/ipfs-update.tar.gz ] && err "Your $MACHINE_TYPE is not supported yet... Please add an issue."
fi

echo "INSTALL ipfs-update >>>>>>>>>>>>>>>>>>>>>>>>>>"
sudo tar -xvzf $MY_PATH/ipfs-update.tar.gz -C /usr/src/ || err "Untar ipfs-update"
rm $MY_PATH/ipfs-update.tar.gz
cd /usr/src/ipfs-update/
sudo ./install.sh || err "Install ipfs-update"
cd $MY_PATH

echo "INSTALL latest ipfs >>>>>>>>>>>>>>>>>>>>>>>>>>"
sudo ipfs-update install latest || err "Install IPFS"

echo "CREATE SYSTEMD ipfs SERVICE >>>>>>>>>>>>>>>>>>"
cat > /tmp/ipfs.service <<EOF
[Unit]
Description=IPFS daemon
After=network.target

[Service]
User=_USER_
ExecStart=/usr/local/bin/ipfs daemon --enable-pubsub-experiment --enable-namesys-pubsub --routing=dhtclient --enable-gc
Restart=on-failure

[Install]
WantedBy=multi-user.target
EOF

sudo cp -f /tmp/ipfs.service /etc/systemd/system/
sudo sed -i "s/_USER_/$USER/g" /etc/systemd/system/ipfs.service

sudo systemctl daemon-reload || err "Restart IPFS"
sudo systemctl enable ipfs || err "Enable IPFS daemon"

# INIT ipfs
[[ $isLAN ]] && ipfs init -p lowpower \
|| ipfs init -p server

sudo chown -R $USER:$USER ~/.ipfs || exit 1


###########################################
# ACTIVATE IPFS OPTIONS: #swarm0 INIT
###########################################
### IMPORTANT !!!!!!! IMPORTANT !!!!!!
###########################################
# DHT PUBSUB mode 
ipfs config Pubsub.Router gossipsub
# MAXSTORAGE = 1/2 available
availableDiskSize=$(df -P ~/ | awk 'NR>1{sum+=$4}END{print sum}')
diskSize="$((availableDiskSize / 2))"
ipfs config Datastore.StorageMax $diskSize
## Activate Rapid "ipfs p2p"
ipfs config --json Experimental.Libp2pStreamMounting true

######### UPDATE BOOTSTRAP LIST ###########
ipfs bootstrap rm --all
ipfs bootstrap add /dnsaddr/oasis.astroport.com/tcp/4001/ipfs/Qmb6Gyy3KFWTxWh4v6fBeh5ANxAF6YAahWQtokmsNsqGda
ipfs bootstrap add /ip4/51.15.166.54/tcp/4001/p2p/Qmb6Gyy3KFWTxWh4v6fBeh5ANxAF6YAahWQtokmsNsqGda
ipfs bootstrap add /ip6/fd42:feed:feed:feed::1/tcp/4001/p2p/Qmb6Gyy3KFWTxWh4v6fBeh5ANxAF6YAahWQtokmsNsqGda
###########################################

sudo systemctl start ipfs || err "Start IPFS daemon"

sleep 7

echo "Peers: " && ipfs swarm peers && sleep 0.3
[[ -z $(ipfs swarm peers) ]] && err "No peers found in swarm. Please open issue :https://git.p2p.legal/axiom-team/astroport/issues"

} # this ensures the entire script is downloaded #