From a5dd141934ec536f5733192584f071d0fc6a16d8 Mon Sep 17 00:00:00 2001
From: nymkappa <1612910616@pm.me>
Date: Tue, 14 Mar 2023 15:39:15 +0900
Subject: [PATCH] Don't fetch prices on signet/testnet, always show 0

---
 backend/src/api/database-migration.ts | 7 ++++++-
 backend/src/tasks/price-updater.ts    | 7 ++++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/backend/src/api/database-migration.ts b/backend/src/api/database-migration.ts
index 1ef31c90b..ab38b0543 100644
--- a/backend/src/api/database-migration.ts
+++ b/backend/src/api/database-migration.ts
@@ -7,7 +7,7 @@ import cpfpRepository from '../repositories/CpfpRepository';
 import { RowDataPacket } from 'mysql2';
 
 class DatabaseMigration {
-  private static currentVersion = 58;
+  private static currentVersion = 59;
   private queryTimeout = 3600_000;
   private statisticsAddedIndexed = false;
   private uniqueLogs: string[] = [];
@@ -510,6 +510,11 @@ class DatabaseMigration {
       // We only run some migration queries for this version
       await this.updateToSchemaVersion(58);
     }
+
+    if (databaseSchemaVersion < 59 && (config.MEMPOOL.NETWORK === 'signet' || config.MEMPOOL.NETWORK === 'testnet')) {
+      // https://github.com/mempool/mempool/issues/3360
+      await this.$executeQuery(`TRUNCATE prices`);
+    }
   }
 
   /**
diff --git a/backend/src/tasks/price-updater.ts b/backend/src/tasks/price-updater.ts
index ccb8d3e68..716ac9ee6 100644
--- a/backend/src/tasks/price-updater.ts
+++ b/backend/src/tasks/price-updater.ts
@@ -73,6 +73,11 @@ class PriceUpdater {
   }
 
   public async $run(): Promise<void> {
+    if (config.MEMPOOL.NETWORK === 'signet' || config.MEMPOOL.NETWORK === 'testnet') {
+      // Coins have no value on testnet/signet, so we want to always show 0
+      return;
+    }
+
     if (this.running === true) {
       return;
     }
@@ -88,7 +93,7 @@ class PriceUpdater {
       if (this.historyInserted === false && config.DATABASE.ENABLED === true) {
         await this.$insertHistoricalPrices();
       }
-    } catch (e) {
+    } catch (e: any) {
       logger.err(`Cannot save BTC prices in db. Reason: ${e instanceof Error ? e.message : e}`, logger.tags.mining);
     }