Keep re-org'ed block summaries in the database

backend/src/repositories/BlocksSummariesRepository.ts

@@ -1,6 +1,6 @@
 import DB from '../database';
 import logger from '../logger';
-import { BlockSummary } from '../mempool.interfaces';
+import { BlockSummary, TransactionStripped } from '../mempool.interfaces';
 
 class BlocksSummariesRepository {
   public async $getByBlockId(id: string): Promise<BlockSummary | undefined> {
@@ -37,6 +37,20 @@ class BlocksSummariesRepository {
     }
   }
 
+  public async $saveTransactions(blockHeight: number, blockId: string, transactions: TransactionStripped[]): Promise<void> {
+    try {
+      const transactionsStr = JSON.stringify(transactions);
+      await DB.query(`
+        INSERT INTO blocks_summaries
+        SET height = ?, transactions = ?, id = ?
+        ON DUPLICATE KEY UPDATE transactions = ?`,
+        [blockHeight, transactionsStr, blockId, transactionsStr]);
+    } catch (e: any) {
+      logger.debug(`Cannot save block summary transactions for ${blockId}. Reason: ${e instanceof Error ? e.message : e}`);
+      throw e;
+    }
+  }
+
   public async $saveTemplate(params: { height: number, template: BlockSummary}) {
     const blockId = params.template?.id;
     try {