rebalance_channels

#!/bin/bash

if [[ -z "$3" ]] ; then
    usage="usage: $0 scid1 scid2 amount_mBTC"
    echo $usage
    exit 1
fi

# own channels
FIRST=$1
FINAL=$2
AMOUNT_MBTC=$3

SOURCE_ID=$($MAINNET_ECLAIR channel --shortChannelId=$FIRST|jq .nodeId)
TARGET_ID=$($MAINNET_ECLAIR channel --shortChannelId=$FINAL|jq .nodeId)

echo $SOURCE_ID
echo $TARGET_ID
echo "amount: "$AMOUNT_MBTC"mBTC"
AMOUNT_MSAT="$AMOUNT_MBTC"00000000
MY_NODEID=$($MAINNET_ECLAIR getinfo | jq -r .nodeId)

INV=$($MAINNET_ECLAIR createinvoice --description=rebalance | jq -r .serialized)

# ignore own channels
ignore_list=$FIRST,$FINAL

while true
do
    CMD="$MAINNET_ECLAIR findroutebetweennodes --sourceNodeId=$SOURCE_ID --targetNodeId=$TARGET_ID --amountMsat=$AMOUNT_MSAT --format=shortChannelId"
    if [ "$ignore_list" != "" ]; then
	CMD=$CMD" --ignoreShortChannelIds=$ignore_list"
    fi
    ROUTES=$($CMD)
    if [ "$ROUTES" == "route not found" ]; then
	echo "route not found"
	break
    fi
    ROUTE=$(echo $ROUTES | jq -r '.routes|.[(0|tonumber)].shortChannelIds| join(",")')
    ROUTE=$FIRST,$ROUTE,$FINAL
    echo "route: $ROUTE"
    PARENTID=$($MAINNET_ECLAIR sendtoroute --invoice=$INV  --amountMsat=$AMOUNT_MSAT --finalCltvExpiry=147 --shortChannelIds=$ROUTE | jq .parentId)
    while true
    do
	sleep 1
	INFO=$($MAINNET_ECLAIR getsentinfo --id=$PARENTID)
	status=$(echo $INFO | jq -r '.[0]| .status.type')
	if [ "$status" != "pending" ]; then
	    break
	fi
    done
    if [ "$status" == "sent" ]; then
        echo $INFO | jq
	echo "success"
	exit 0
    fi
    failure_message=$(echo $INFO | jq -r '.[0]| .status.failures[0].failureMessage')
    regex="^channel ([0-9x]+) is currently unavailable$"
    if [[ $failure_message =~ $regex ]]; then
	scid="${BASH_REMATCH[1]}"
        if [ "$ignore_list" != "" ]; then
            ignore_list=$ignore_list,$scid
        else
            ignore_list=$scid	
        fi
        echo "ignore_list: "$ignore_list
    else
        echo $INFO | jq
	exit 0
    fi

done