From 6f6b2a43559e582c11d5ce2c858e55339012b159 Mon Sep 17 00:00:00 2001
From: softsimon <softsimon@protonmail.com>
Date: Wed, 20 Oct 2021 23:55:36 +0400
Subject: [PATCH] Post TX API for HTML forms

---
 backend/src/index.ts  |  1 +
 backend/src/routes.ts | 16 ++++++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/backend/src/index.ts b/backend/src/index.ts
index 6b1f14efb..fd3ec3fb1 100644
--- a/backend/src/index.ts
+++ b/backend/src/index.ts
@@ -170,6 +170,7 @@ class Server {
       .get(config.MEMPOOL.API_URL_PREFIX + 'backend-info', routes.getBackendInfo)
       .get(config.MEMPOOL.API_URL_PREFIX + 'init-data', routes.getInitData)
       .get(config.MEMPOOL.API_URL_PREFIX + 'validate-address/:address', routes.validateAddress)
+      .post(config.MEMPOOL.API_URL_PREFIX + 'tx/push', routes.$postTransactionForm)
       .get(config.MEMPOOL.API_URL_PREFIX + 'donations', async (req, res) => {
         try {
           const response = await axios.get('https://mempool.space/api/v1/donations', { responseType: 'stream', timeout: 10000 });
diff --git a/backend/src/routes.ts b/backend/src/routes.ts
index 2836bb5b8..f715d38a0 100644
--- a/backend/src/routes.ts
+++ b/backend/src/routes.ts
@@ -781,6 +781,22 @@ class Routes {
         : (e.message || 'Error'));
     }
   }
+
+  public async $postTransactionForm(req: Request, res: Response) {
+    res.setHeader('content-type', 'text/plain');
+    const matches = /tx=([a-z0-9]+)/.exec(req.body);
+    let txHex = '';
+    if (matches && matches[1]) {
+      txHex = matches[1];
+    }
+    try {
+      const txIdResult = await bitcoinClient.sendRawTransaction(txHex);
+      res.send(txIdResult);
+    } catch (e: any) {
+      res.status(400).send(e.message && e.code ? 'sendrawtransaction RPC error: ' + JSON.stringify({ code: e.code, message: e.message })
+        : (e.message || 'Error'));
+    }
+  }
 }
 
 export default new Routes();