Save block predictions results in db and show results in a chart

backend/src/api/database-migration.ts

@@ -4,7 +4,7 @@ import logger from '../logger';
 import { Common } from './common';
 
 class DatabaseMigration {
-  private static currentVersion = 23;
+  private static currentVersion = 24;
   private queryTimeout = 120000;
   private statisticsAddedIndexed = false;
   private uniqueLogs: string[] = [];
@@ -243,6 +243,11 @@ class DatabaseMigration {
         await this.$executeQuery('ALTER TABLE `prices` ADD `AUD` float DEFAULT "0"');
         await this.$executeQuery('ALTER TABLE `prices` ADD `JPY` float DEFAULT "0"');
       }
+
+      if (databaseSchemaVersion < 24 && isBitcoin == true) {
+        await this.$executeQuery('DROP TABLE IF EXISTS `blocks_audits`');
+        await this.$executeQuery(this.getCreateBlocksAuditsTableQuery(), await this.$checkIfTableExists('blocks_audits'));
+      }
     } catch (e) {
       throw e;
     }
@@ -567,6 +572,19 @@ class DatabaseMigration {
     ) ENGINE=InnoDB DEFAULT CHARSET=utf8;`;
   }
 
+  private getCreateBlocksAuditsTableQuery(): string {
+    return `CREATE TABLE IF NOT EXISTS blocks_audits (
+      time timestamp NOT NULL,
+      hash varchar(65) NOT NULL,
+      height int(10) unsigned NOT NULL,
+      missing_txs JSON NOT NULL,
+      added_txs JSON NOT NULL,
+      match_rate float unsigned NOT NULL,
+      PRIMARY KEY (hash),
+      INDEX (height)
+    ) ENGINE=InnoDB DEFAULT CHARSET=utf8;`;
+  }
+
   public async $truncateIndexedData(tables: string[]) {
     const allowedTables = ['blocks', 'hashrates', 'prices'];