ipfs.sh

#!/bin/bash
# author: simbafs
# date:   2022-08-30
# MIT License

IPFS="${IPFS:-$(which ipfs)}"
KEY="${KEY:-q8s}"
# this line will be changed by the script
PKEY="${PKEY:-"k51qzi5uqu5dg9y6e55vjfb583rdoshtko6qizgk7nde9ybm9gyor5ujpfb9m2"}"
DIR="${DIR:-.}"

# cehck executable
if [[ -f "$IPFS" && !(-x "$IPFS") ]]; then
  echo "IPFS is not installed"
  exit 1
fi

# check ipfs daemon 
$IPFS swarm peers > /dev/null 2>&1
if [ $? -ne 0 ]; then
  echo "ipfs daemon is not running"
  exit 1
fi

case $1 in 
	server)
		cd $DIR
		CID=$($IPFS add -rwq . | tail -n2 | head -n1) # get the second last line
		PK=$($IPFS name publish --key=$KEY $CID | cut -d' ' -f3 | sed -e 's/://') # get public key and remove ':'
		if [[ $? -ne 0 ]]; then
			echo "Failed to publish $CID"
			exit 1
		fi
		echo $PK
		;;
	client)
		$IPFS get /ipns/$PKEY 2>&1 > /dev/null
		if [[ $? -ne 0 ]]; then
			echo "Failed to get $PKEY"
			exit 1
		fi
		;;
	setPK)
		if [[ -z $2 ]]; then
			echo "Usage: $0 setPK <public key>"
			exit 1
		fi
		sed -ie "s/^PKEY=.*/PKEY=\"\${PKEY:-\"$2\"}\"/" $0
		chmod 755 $0
		rm $0e
		;;
	help|*)
		echo "Usage: $0 {server|client|setPK}"
	;;
esac