pay

#!/usr/bin/env bash

set -e -o pipefail

source _toolbox_lib.sh

FROM_PERSON=${1:-alice}
TO_PERSON=${2:-bob}
AMOUNT_BTC=${3:-0.01}

PAY_REQUEST=$(req_pay "$TO_PERSON" ${AMOUNT_BTC})

FLAVOR=$(get_flavor "$FROM_PERSON")
case "$FLAVOR" in
  lnd) "$FROM_PERSON" sendpayment --force --pay_req="${PAY_REQUEST}" ;;
  lightning) "$FROM_PERSON" pay "${PAY_REQUEST}" ;;
  eclair)
    PAY_ATTEMPT_ID=$("$FROM_PERSON" payinvoice --maxAttempts=100 --invoice="${PAY_REQUEST}")
    # see https://acinq.github.io/eclair/#getsentinfo
    cmd="jq -e '.[] | select(.parentId  == \"${PAY_ATTEMPT_ID}\").status.paymentPreimage' <<<\$(alice getsentinfo --id=${PAY_ATTEMPT_ID})"
    cmd2="alice getsentinfo --id=${PAY_ATTEMPT_ID}"
    wait_for "payment success between $FROM_PERSON and $TO_PERSON" "$cmd" "$cmd2"
    ;;
  *) echo_err "unsupported flavor type '$FLAVOR' for '$FROM_PERSON'"; exit 1; ;;
esac