#!/bin/bash
########################################################################
# Author: Fred (support@qo-op.com)
# Version: 1.0
# License: AGPL-3.0 (https://choosealicense.com/licenses/agpl-3.0/)
########################################################################
# == Transform incoming G1 TX into IPFS ZenTAG ==
# SCAN G1PUBKEY WALLET FOR COMMAND in received/pending TX/IN COMMENT
########################################################################
########################################################################
#               _(_)_                     _(_)_                      
#   @@@@       (_)@(_)        @@@@       (_)@(_)        @@@@         
#  @@()@@ wWWWw  (_)\        @@()@@ wWWWw  (_)\        @@()@@ wWWWw  
#   @@@@  (___)     \|/       @@@@  (___)     \|/       @@@@  (___)  
#    /      Y       \|         /      Y       \|         /      Y    
# \ |     \ |/       | /    \ |     \ |/       | /    \ |     \ |/   
# \\|//   \\|///  \\\|//    \\|//   \\|///  \\\|//    \\|//   \\|/// 
#^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
########################################################################

me=`basename "$0"`
# http://cb.vu/unixtoolbox.xhtml
# Create RAM disk
# mkdir -p ~/.zen/tmp && sudo mount -t tmpfs -osize=64m tmpfs ~/.zen/tmp

# Symetric Encrypt and decrypt 
# openssl aes-256-cbc -k $mysecretpassword -salt -in file -out file.aes
# openssl aes-256-cbc -k $mysecretpassword -d -salt -in file.aes -out file
# tar zip and encrypt a whole directory
# tar -zcf - directory | openssl aes-128-cbc -salt -out directory.tar.gz.aes  # Encrypt
# openssl aes-128-cbc -d -salt -in directory.tar.gz.aes | tar -xz -f -        # Decrypt

if [[ ! $(which silkaj) ]]; then
	echo "$USER Install SILKAJ !!" && exit 1
fi

DUNITERURL="https://duniter-g1.p2p.legal" # ATTENTION PAS DE / FINAL !!!
#DUNITERURL="https://duniter.g1.1000i100.fr" # METTRE EN LOAD BALANCING....

IPFSNODEID=$(ipfs id -f='<id>\n')
[[ $IPFSNODEID == "" ]] && echo "$USER Install IPFS !!" && exit
[[ ! -d ~/.ssb/zen/scan ]] && mkdir -p ~/.ssb/zen/scan
[[ ! -d ~/.ssb/zen/wallets ]] && mkdir -p ~/.ssb/zen/wallets
[[ ! -d ~/.ssb/zen/wallets_swarm ]] && mkdir -p ~/.ssb/zen/wallets_swarm

#########################################################################################################
# GET G1 PUBKEY FROM SCUTTLEBUTT or $2 (DEBUG)
DELAY=$1
[[ $DELAY == "" ]] && DELAY="30 days" && echo "*** HELP ***" && echo "./$me \"duration\" (default $DELAY)" && echo "************" && echo
DELAYUNIT=$(echo $DELAY | cut -d ' ' -f 2)

# NODE_G1PUBKEY=$2 # DEBUG
if [[ $NODE_G1PUBKEY == "" ]]; then
	if [[ -f ~/.ssb/secret ]]; then
		ssbpub=$(cat ~/.ssb/secret | grep public\" | cut -d ' ' -f 4 | cut -d '.' -f 1 | sed s/\"//g)
		ssbpriv=$(cat ~/.ssb/secret | grep private\" | cut -d ' ' -f 4 | cut -d '.' -f 1 | sed s/\"//g)
		NODE_G1PUBKEY=$(echo $ssbpub | base64 -d | base58)
		NODE_G1PRIVKEY=$(echo $ssbpriv | base64 -d | base58)
		echo "pub: $NODE_G1PUBKEY" > ~/.ipfs/g1.pubsec.dunikey
		echo "sec: $NODE_G1PRIVKEY" >> ~/.ipfs/g1.pubsec.dunikey
	else
		NODE_G1PUBKEY=$(cat ~/.ipfs/g1.pubsec.dunikey | grep 'pub:' | cut -d ' ' -f 2)
		NODE_G1PRIVKEY=$(cat ~/.ipfs/g1.pubsec.dunikey | grep 'sec:' | cut -d ' ' -f 2)
	fi
fi
[[ "$NODE_G1PUBKEY" == "" ]] && echo "$USER Missing  ~/.ipfs/g1.pubsec.dunikey : Install SSB Scuttlebot !" && exit;

#########################################################################################################
echo "CHECKING G1WALLET LAST TX/IN ($DELAY)"
echo "======================================="
echo "IPFSNODEID = $IPFSNODEID"
echo "NODE_G1PUBKEY = $NODE_G1PUBKEY"
# TODO: REDUCE TIME WINDOW & SCAN history.pending
TIMEBEFORE=$(date --date="-$DELAY" +"%s")
TIMESTAMP=$(date +"%s")

# GET BLOCKCHAIN TX DURING TIME WINDOW
curl -s $DUNITERURL/tx/history/$NODE_G1PUBKEY/times/$TIMEBEFORE/$TIMESTAMP > /tmp/g1zen.scan

#########################
# LONG DELAY = received
if [[ $DELAYUNIT != "minutes" && $DELAYUNIT != "minute" ]]; then
	# HOW MANY TX DO WE HAVE...
	TXnb=$(cat /tmp/g1zen.scan | jq '.history.received[].hash' | wc -l)
	echo "DETECTED $TXnb TX... Checking TX/IN..."
	# PARSE $TXnb TX
	line=1
	while [[ $line -le $TXnb ]]; do
		TXhash=$(cat /tmp/g1zen.scan | jq '.history.received[].hash' | head -n $line | tail -n 1 | sed s/\"//g)
		# IT IS A NEW TX/IN?
		if [[ ! -f ~/.ssb/zen/scan/zen.$TXhash ]]; then
			# GET LAST RX ISSUER
			ISSUER=$(cat /tmp/g1zen.scan | jq '.history.received[].issuers[0]' | head -n $line | tail -n 1 | sed s/\"//g)
			[[ $ISSUER == $NODE_G1PUBKEY ]] && ((line++)) && continue ## TX/OUT CONTINUE
			echo $ISSUER > ~/.ssb/zen/scan/zen.$TXhash
			# GET OUTPUTS AND MAKE ZEN SUM
			ZEN=$(cat /tmp/g1zen.scan | jq '.history.received[].outputs[]' | grep $NODE_G1PUBKEY | head -n $line | tail -n 1 | sed s/\"//g | cut -d ':' -f 1)
			# GET COMMENT
			COMMENT=$(cat /tmp/g1zen.scan | jq '.history.received' | jq '.[].comment' | head -n $line | tail -n 1 | sed s/\"//g)
			# echo "TX-IN $ISSUER => $NODE_G1PUBKEY"
			echo "TX/IN :: $ZEN ZEN from $ISSUER :: $COMMENT ($TXhash)"
			CMD=$(echo "$TEXT" | awk '{print toupper($1)}')
			[[ $CMD == "ZEN" ]] && ./zen_MAKE.sh $ZEN $TXhash
			./zen_MAKE.sh $ZEN $TXhash $ISSUER
		else
			# STILL OLD TX
			[[ $TXhash != "" ]] && echo "ALREADY TREATED TX/IN: $TXhash $(cat ~/.ssb/zen/scan/zen.$TXhash)" || echo "NO TX"
		fi
		((line++))
	done
else
# MINUTE DELAY = pending
	# HOW MANY TX DO WE HAVE...
	TXnb=$(cat /tmp/g1zen.scan | jq '.history.pending[].hash' | wc -l)
	echo "DETECTED $TXnb TX... Checking TX/IN..."
	# PARSE $TXnb TX
	line=1
	while [[ $line -le $TXnb ]]; do
		TXhash=$(cat /tmp/g1zen.scan | jq '.history.pending[].hash' | head -n $line | tail -n 1 | sed s/\"//g)
		# IT IS A NEW TX/IN?
		if [[ ! -f ~/.ssb/zen/scan/zen.$TXhash ]]; then
			# GET LAST RX ISSUER
			ISSUER=$(cat /tmp/g1zen.scan | jq '.history.pending[].issuers[0]' | head -n $line | tail -n 1 | sed s/\"//g)
			[[ $ISSUER == $NODE_G1PUBKEY ]] && ((line++)) && continue ## TX/OUT CONTINUE
			echo $ISSUER > ~/.ssb/zen/scan/zen.$TXhash
			# GET OUTPUTS AND MAKE ZEN SUM
			ZEN=$(cat /tmp/g1zen.scan | jq '.history.pending[].outputs[]' | grep $NODE_G1PUBKEY | head -n $line | tail -n 1 | sed s/\"//g | cut -d ':' -f 1)
			# GET COMMENT
			COMMENT=$(cat /tmp/g1zen.scan | jq '.history.pending' | jq '.[].comment' | head -n $line | tail -n 1 | sed s/\"//g)
			# echo "TX-IN $ISSUER => $NODE_G1PUBKEY"
			echo "TX/IN :: $ZEN ZEN from $ISSUER :: $COMMENT ($TXhash)"
			CMD=$(echo "$TEXT" | awk '{print toupper($1)}')
			[[ $CMD == "ZEN" ]] && ./zen_MAKE.sh $ZEN $TXhash
		else
			# STILL OLD TX
			[[ $TXhash != "" ]] && echo "ALREADY TREATED TX/IN: $TXhash $(cat ~/.ssb/zen/scan/zen.$TXhash)" || echo "NO TX"
		fi
		((line++))
	done
fi