#!/bin/bash
################################################################################
# Authors:
# [@cel](@f/6sQ6d2CMxRUhLpspgGIulDxDCwYD7DzFzPNr7u5AU=.ed25519)
# [@Fred](@9BbJwPDjcyIqrOUPNn0nJZBduWdIrpMk3Cjz5MP361s=.ed25519)
# [@Boris](@l5nYExWYIgDLV6BYHOJPoI97jIUyTdSm8CTLpQ0XeOg=.ed25519)
# Version: 1.0
# License: AGPL-3.0 (https://choosealicense.com/licenses/agpl-3.0/)
###########################################################################################
# PREVENT DOUBLE PAYEMENT
# ADD G1 Layer 10 LOVE to message writer you like !
############################################################################################ 
# Let's get G1 public and private keys
g1pub=$(cat ~/.ssb/secret.dunikey | grep "pub" | cut -d ' ' -f 2)
g1priv=$(cat ~/.ssb/secret.dunikey | grep "sec" | cut -d ' ' -f 2)
# SSB pubkey
ssbpub=$(cat ~/.ssb/secret | grep public\" | cut -d ' ' -f 4 | cut -d '.' -f 1 | sed s/\"//g)

############################################################################################
#### CHECK LIKE AND SEND LOVE
# Let's get G1 account balance
echo ""
echo "Welcome to the G1 SSB like microdonation system!"
echo "
MMMMMMMMMMMMMNk;'cdxxd:,c0WMMMMMMMMMMMMM
MMMMMMMMMMMMMNx,.      .;kWMMMMMMMMMMMMM
MMMMMMMMMMMMMMMNOdlccld0NMMMMMMMMMMMMMMM
MMMMMMMMMMMWXko:,'....',:okXWMMMMMMMMMMM
MMMMMMMMMNk:.              .cOWMMMMMMMMM
MMMMMMMW0:                   .c0MMMMMMMM
MMMMMMWk.      'lxkOOkdc'    .cOWMMMMMMM
MMMMMMO'     'kNMMMMMMMMNxcoOXWMMMMMMMMM
MMMMMNl     '0MMMMMMMMMMMMMMMMMMMMMMMMMM
MMMMMX;     cNMMMMMMMNOkkkkkkkkkkONMMMMM
MMMMMNc     ;XMMMMMMMNd'         .OMMMMM
MMMMMWx.     cKMMMMMMMWKc.       .OMMMMM
MMMMMMNo.     .lkKXNNXKkc.       .OMMMMM
MMMMMMMNd.       ......          .OMMMMM
MMMMMMMMWKl.                'c:. .OMMMMM
MMMMMMMMMMWXkc,..      ..,lkXWWO:;OMMMMM
MMMMMMMMMMMMMMWX0OxddxO0XWMMMMMMWXNMMMMM
MMMMMMMMMMMMMMMMNx;'',dNMMMMMMMMMMMMMMMM
MMMMMMMMMMMMMMMMK,    '0MMMMMMMMMMMMMMMM
MMMMMMMMMMMMMMMMNd.  .oNMMMMMMMMMMMMMMMM
"
sleep 1
echo ""
echo "You know your SSB pubkey:"
echo $ssbpub
sleep 1
echo ""
echo "...but did you know it is also a valid G1 wallet?"
echo $g1pub
sleep 2
echo ""
echo "Let's check the current balance of your wallet!"
sleep 2
echo ""
echo "We are interrogating the G1 blockchain to check if anyone has already sent G1..."
sleep 1
echo ""
echo "A moment please..."
echo ""
sleep 1

duniter_server="duniter-g1.p2p.legal:443"
echo "Testing server $duniter_server..."
echo ""
silkaj -p "$duniter_server" balance $g1pub 2>/dev/null
if [ $? -eq 1 ]
then
	duniter_server="g1.duniter.org:443"
	echo "Testing server $duniter_server..."
	echo ""
	silkaj -p "$duniter_server" balance $g1pub 2>/dev/null

	if [ $? -eq 1 ]
	then 
		echo "The server did not respond well. Please try again."
		exit 1
	fi
fi

echo "Have any money? Then let's send G1love. Press ENTER to continue. " && read
###########################################################################################
self=$(sbotc whoami | jq -r .id) || exit 1
ssb_dir=~/.${ssb_appname:-ssb}
id_part=$(echo "$self" | sed 's/\//_/g' | tail -c +2 | head -c 9)
state_file=$ssb_dir/likes-g1-$id_part.ts

if [ -s "$state_file" ]
then last_ts=$(cat "$state_file") || exit 1
else
	last_ts=$(date -u +%s%N | cut -b1-13)
	last_ts=$((last_ts - 3600000)) # timestamp from 1h ago

#else last_ts=null
fi

process_msg() {
	msg=$1
	target_id=$(printf %s "$msg" | jq -r '.value?.content?.vote?.link') || return 1
	target_msg=$(sbotc -e get "$target_id") || return 1
	target_author=$(printf %s "$target_msg" | jq -r .author) || return 1
	author_s_name=$(sbotc query.read '{"query":[{"$filter":{"value":{"author": "'"$target_author"'", "content":{"type":"about", "about": "'"$target_author"'"}}}}]}' | jq .value?.content?.name | grep -v null | tail -n 1)
	root_id=$(printf %s "$target_msg" | jq -r .content?.root) || return 1
	[[ $root_id == "null" ]] && root_id=$target_id
	g1_author=$(echo $target_author | cut -d '.' -f 1 | cut -d '@' -f2 | base64 -d | base58)
	msg_excerpt=$(printf %s "$target_msg" | jq -r .content?.text | head -n 10) || return 1
}

bold=$(tput bold)
normal=$(tput sgr0)

sbotc query.read '{"query":[{"$filter":{"value":{"author":"'"$self"'","content":{"type":"vote", "vote":{"expression":"Like"}},"timestamp":{"$gt":'"$last_ts"'}}}}]}' | while read -r msg
do
	priv=$(printf %s "$msg" | jq .value.content.private)
	if [[ $priv == true ]]
	then
		printf "Private message $priv, continue to next one\n" >&2
		continue
	fi
	
	if ! ts=$(printf %s "$msg" | jq -r .value.timestamp)
	then
		printf 'Unable to get message timestamp\n' >&2
		exit 1
	fi

	if ! echo "$ts" > "$state_file"~
	then
		printf 'Unable to write to backup state file.\n' >&2
		exit 1
	fi

	if ! process_msg "$msg" 
	then
		msg_id=$(printf %s "$msg" | jq -r .key)
		printf 'Unable to process message %s\n' "$msg_id" >&2
		exit 1
	fi
	

	echo ""
	echo "================================================================"
	printf "Let's thank ${bold}@%s ${normal}for their message: \n" "${author_s_name:1:-1}" 
	echo "================================================================"
	printf "%s" "$msg_excerpt"
	echo ""
	echo "----------------------------------------------------------------"
	
	if [[ $g1_author != $g1pub ]]; then
		#printf '%s\n' "silkaj -af --file ~/.ssb/secret.dunikey tx --output $g1_author --amountUD 0.1 --comment _SSB:LIKE:$target_id"
		#### SEND 10 LOVE = 0.1 DU to $g1_author wallet
		silkaj -p "$duniter_server" -af --file ~/.ssb/secret.dunikey tx --output $g1_author --amountUD 0.1 --comment "_SSB:LIKE:$target_id" -y 2>/dev/null		
		
		#### WRITE RESPONSE MESSAGE
		if [ ! -f ~/.ssb/db/g1likes ]; then
			touch ~/.ssb/db/g1likes
		fi
		
		if ! grep -Fxq $target_author ~/.ssb/db/g1likes; then
			echo $target_author >> ~/.ssb/db/g1likes
			thank_you_msg=$(printf '[@%s](%s) > Thanks for this post ; I have just sent you G1 libre money. Use it with [Cesium](https://cesium.app). Get it from [https://git.p2p.legal/Axiom-Team/ssb-g1like](https://git.p2p.legal/Axiom-Team/ssb-g1like)' "${author_s_name:1:-1}" "$target_author")
			sbotc publish '{"type":"post","text":"'"$thank_you_msg"'", "branch": "'"$target_id"'", "root": "'"$root_id"'"}' 2>&1>/dev/null
			echo "----------------------------------------------------------------"
			printf "Since it's the first time you sent G1 to %s, he was sent this message: \n\n%s \n" "$author_s_name" "$thank_you_msg"
			echo "----------------------------------------------------------------"
		fi
		
		#printf "0.1 G1UD sent to %s!\n" "$author_s_name" 
		#echo "----------------------------------------------------------------"
		echo ""
		echo ""
		
		sleep 20 # DO NOT OVER CHARGE DUNITER
	else
		echo "I LIKE MY MESSAGE $target_id"
	fi
	if ! mv "$state_file"~ "$state_file"
	then
		msg_id=$(printf %s "$msg" | jq -r .key)
		printf 'Unable to write to state file. Update state file manually to prevent %s from being processed twice.\n' "$msg_id" >&2
		exit 1
	fi
done