Index new hashrates once every 24 hours

backend/src/repositories/HashratesRepository.ts

@@ -43,11 +43,28 @@ class HashratesRepository {
       query += ` WHERE hashrate_timestamp BETWEEN DATE_SUB(NOW(), INTERVAL ${interval}) AND NOW()`;
     }
 
+    query += ` ORDER by hashrate_timestamp DESC`;
+
     const [rows]: any[] = await connection.query(query);
     connection.release();
 
     return rows;
   }
+
+  public async $setLatestRunTimestamp() {
+    const connection = await DB.pool.getConnection();
+    const query = `UPDATE state SET number = ? WHERE name = 'last_hashrates_indexing'`;
+    await connection.query<any>(query, [Math.round(new Date().getTime() / 1000)]);
+    connection.release();
+  }
+
+  public async $getLatestRunTimestamp(): Promise<number> {
+    const connection = await DB.pool.getConnection();
+    const query = `SELECT number FROM state WHERE name = 'last_hashrates_indexing'`;
+    const [rows] = await connection.query<any>(query);
+    connection.release();
+    return rows[0]['number'];
+  }
 }
 
 export default new HashratesRepository();