refactor

1 files changed, 137 insertions, 0 deletions

diff --git a/routes/liquid/receive.js b/routes/liquid/receive.js
new file mode 100644
index 00000000..2e622aad
--- /dev/null
+++ b/routes/liquid/receive.js
@@ -0,0 +1,137 @@
+const reverse = require("buffer-reverse");
+const zmq = require("zeromq");
+const { Op } = require("sequelize");
+const bitcoin = require("elementsjs-lib");
+
+const zmqRawBlock = zmq.socket("sub");
+zmqRawBlock.connect(config.liquid.zmqrawblock);
+zmqRawBlock.subscribe("rawblock");
+
+const zmqRawTx = zmq.socket("sub");
+zmqRawTx.connect("tcp://127.0.0.1:18603");
+zmqRawTx.subscribe("rawtx");
+
+let NETWORK = bitcoin.networks[config.bitcoin.network === "mainnet" ? "bitcoin" : config.bitcoin.network];
+
+zmqRawTx.on("message", async (topic, message, sequence) => {
+  const hex = message.toString("hex");
+  const unblinded = await lq.unblindRawTransaction(hex);
+  const tx = await lq.decodeRawTransaction(unblinded.hex);
+  const blinded = await lq.decodeRawTransaction(hex);
+  if (payments.includes(blinded.txid)) return;
+
+  Promise.all(
+    tx.vout.map(async o => {
+      if (!(o.scriptPubKey && o.scriptPubKey.addresses)) return;
+      const value = toSats(o.value);
+      const address = o.scriptPubKey.addresses[0];
+
+      if (Object.keys(addresses).includes(address)) {
+        let user = await db.User.findOne({
+          where: {
+            username: addresses[address]
+          }
+        });
+
+        let invoices = await db.Payment.findAll({
+          limit: 1,
+          where: {
+            address,
+            received: null,
+            amount: {
+              [Op.gt]: 0
+            }
+          },
+          order: [["id", "DESC"]]
+        });
+
+        let tip = null;
+        if (invoices.length) tip = invoices[0].tip;
+
+        let confirmed = 0;
+
+        user.pending += value;
+        user.confidential = await lq.getNewAddress();
+        user.liquid = (await lq.getAddressInfo(user.confidential)).unconfidential;
+
+        await user.save();
+        emit(user.username, "user", user);
+
+        addresses[user.liquid] = user.username;
+
+        const payment = await db.Payment.create({
+          user_id: user.id,
+          hash: blinded.txid,
+          amount: value,
+          currency: user.currency,
+          rate: app.get("rates")[user.currency],
+          received: true,
+          tip,
+          confirmed,
+          address,
+          asset: 'LBTC',
+        });
+        payments.push(blinded.txid);
+
+        l.info("liquid detected", user.username, value);
+        emit(user.username, "payment", payment);
+      }
+    })
+  );
+});
+
+let queue = {};
+
+zmqRawBlock.on("message", async (topic, message, sequence) => {
+  const payments = await db.Payment.findAll({
+    where: { confirmed: 0 }
+  });
+
+  const hashes = payments.map(p => p.hash);
+
+  const block = bitcoin.Block.fromHex(message.toString("hex"), true);
+  const hash = await lq.getBlockHash(block.height);
+  const json = await lq.getBlock(hash, 2);
+
+  json.tx.map(tx => {
+    if (hashes.includes(tx.txid)) queue[tx.txid] = 1;
+  });
+});
+
+setInterval(async () => {
+  let arr = Object.keys(queue);
+
+  for (let i = 0; i < arr.length; i++) {
+    let hash = arr[i];
+
+    let p = await db.Payment.findOne({
+      include: [{ model: db.User, as: "user" }],
+      where: { hash, confirmed: 0, received: 1 }
+    })
+
+    p.confirmed = 1;
+
+    let user = await p.getUser();
+    user.balance += p.amount;
+    user.pending -= Math.min(user.pending, p.amount);
+    l.info("liquid confirmed", user.username, p.amount);
+    emit(user.username, "user", user);
+
+    await user.save();
+    await p.save();
+
+    let payments = await db.Payment.findAll({
+      where: { 
+        user_id: user.id,
+        received: { 
+          [Op.ne]: null
+        },
+      },
+      order: [['id', 'DESC']],
+      limit: 12
+    });
+
+    emit(user.username, "payments", payments);
+    delete queue[hash];
+  }
+}, 1000);