module.exports = ah(async (req, res) => {
  let { user } = req;
  let { address, memo, tx } = req.body;

  const isChange = async (address) =>
    (await lq.getAddressInfo(address)).ismine &&
    !Object.keys(addresses).includes(address);

  let totals = {};
  let change = {};
  let fee = 0;

  let { vout } = await lq.decodeRawTransaction(tx.hex);

  for (let i = 0; i < vout.length; i++) {
    let {
      asset,
      value,
      scriptPubKey: { type, addresses },
    } = vout[i];

    if (type === "fee") fee = toSats(value);
    else {
      if (!totals[asset]) totals[asset] = change[asset] = 0;
      totals[asset] += toSats(value);

      if (addresses) {
        if (await isChange(addresses[0])) {
          change[asset] += toSats(value);
        }
      }
    }
  }

  const assets = Object.keys(totals);
  const payments = [];

  try {
    await db.transaction(async (transaction) => {
      for (let i = 0; i < assets.length; i++) {
        let asset = assets[i];
        let amount = totals[asset];
        if (change[asset]) amount -= change[asset];
        let total = amount;
        if (asset === config.liquid.btcasset) total += fee;

        l.info("creating liquid payment", user.username, asset, total, fee);

        let account = await db.Account.findOne({
          where: {
            user_id: user.id,
            asset,
          },
          lock: transaction.LOCK.UPDATE,
          transaction,
        });

        if (total > account.balance) {
          l.warn("amount exceeds balance", {
            total,
            fee,
            balance: account.balance,
          });
          throw new Error("Insufficient funds");
        }

        account.balance -= total;
        await account.save({ transaction });

        let payment = {
          amount: -amount,
          account_id: account.id,
          fee,
          memo,
          user_id: user.id,
          rate: app.get("rates")[user.currency],
          currency: user.currency,
          address,
          confirmed: true,
          received: false,
          network: "LBTC",
        };

        payment.account = account;
        payments.push(payment);
      }
    });
  } catch (e) {
    l.error("problem creating liquid payment", user.username, e.message);
    return res.status(500).send(e.message);
  }

  try {
    await db.transaction(async (transaction) => {
      if (config.liquid.walletpass)
        await lq.walletPassphrase(config.liquid.walletpass, 300);

      let blinded = await lq.blindRawTransaction(tx.hex);
      let signed = await lq.signRawTransactionWithWallet(blinded);
      let txid = await lq.sendRawTransaction(signed.hex);

      let main;
      for (let i = 0; i < assets.length; i++) {
        p = payments[i];
        let { account } = p;
        p.hash = txid;
        p = await db.Payment.create(p, { transaction });
        if (account.ticker !== "BTC" || !main) {
          main = p.get({ plain: true });
          main.account = account.get({ plain: true });
        }
      }

      emit(user.username, "account", main.account);
      emit(user.username, "payment", main);
      res.send(main);
    });
  } catch (e) {
    l.error("problem sending liquid", user.username, e.message);
    return res.status(500).send(e.message);
  }
});