added 'REINDEX_IF_REORG' environment variable

README.md

@@ -21,6 +21,7 @@ This project uses the following environment variables:
 | ----------------------------- | ------------------------------------| -----------------------------------------------|
 |PORT           | Specifies the port number on which the server listens for incoming HTTP requests               | 3000      |
 |START_HEIGHT   | Specifies the block height at which indexing begins                                            | 870525      |
+|REINDEX_IF_REORG | Specifies the number of blocks to reindex when a reorg is detected  | 6 |
 |BITCOIN_NODE   | Specifies the URL of the attached Bitcoin node                                                 | http://localhost:8332 |
 |DATA_DIR       | Specifies the directory where the indexed data will be persisted                               | ./data |
 

src/index.js

@@ -7,6 +7,7 @@ import 'dotenv/config';
 
 const PORT = process.env.PORT || 3000;
 const START_HEIGHT = process.env.START_HEIGHT || 870525;
+const REINDEX_IF_REORG = process.env.REINDEX_IF_REORG || 6;
 const BITCOIN_NODE = process.env.BITCOIN_NODE || 'http://localhost:8332';
 const DATA_PATH = process.env.DATA_DIR || './data';
 const BASE_URL = `${BITCOIN_NODE}/rest`;
@@ -107,7 +108,7 @@ async function fetchBlocks() {
         console.log(`Indexed block ${blockHash} at height:`, nextHeight);
 
         if (db.data.lastBlockHash && previousBlockhash !== db.data.lastBlockHash) {
-          db.data.lastHeight -= 6;
+          db.data.lastHeight -= REINDEX_IF_REORG;
           db.data.lastBlockHash = '';
           console.log("Reorg detected, re-indexing last 6 blocks...");
         } else {