From ed3482fc15d3d8f8e8b3bceff7d473fd29601280 Mon Sep 17 00:00:00 2001
From: Zoltan <gyulainagyzoltan@gmail.com>
Date: Wed, 22 Sep 2021 18:59:06 +0300
Subject: feat: added withdraw endpoint for bitcoin

---
 lib/feetx.js | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 lib/feetx.js

(limited to 'lib')

diff --git a/lib/feetx.js b/lib/feetx.js
new file mode 100644
index 00000000..26ade9da
--- /dev/null
+++ b/lib/feetx.js
@@ -0,0 +1,19 @@
+module.exports = async (txid) => {
+    const tx = await bc.getRawTransaction(txid);
+    const transaction = await bc.decodeRawTransaction(tx);
+    let valueIn = 0;
+    let valueOut = 0;
+
+    const txVin = await Promise.all(
+        transaction.vin.map(async o =>
+            await bc.decodeRawTransaction(
+                await bc.getRawTransaction(o.txid)
+            )
+        )
+    );
+
+    txVin.forEach(o => o.vout.forEach(o => valueIn += o.value));
+    transaction.vout.forEach(o => valueOut += o.value);
+
+    return toSats(valueIn - valueOut);
+}
-- 
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