Generate daily average hashrate data

backend/src/repositories/HashratesRepository.ts

@@ -0,0 +1,42 @@
+import { DB } from '../database';
+import logger from '../logger';
+
+class HashratesRepository {
+  /**
+   * Save indexed block data in the database
+   */
+  public async $saveDailyStat(dailyStat: any) {
+    const connection = await DB.pool.getConnection();
+
+    try {
+      const query = `INSERT INTO
+      hashrates(hashrate_timestamp, avg_hashrate, pool_id)
+      VALUE (FROM_UNIXTIME(?), ?, ?)`;
+
+      const params: any[] = [
+        dailyStat.hashrateTimestamp, dailyStat.avgHashrate,
+        dailyStat.poolId
+      ];
+
+      // logger.debug(query);
+      await connection.query(query, params);
+    } catch (e: any) {
+      logger.err('$saveHashrateInDatabase() error' + (e instanceof Error ? e.message : e));
+    }
+
+    connection.release();
+  }
+
+  /**
+   * Returns an array of all timestamp we've already indexed
+   */
+  public async $getAllTimestamp(): Promise<number[]> {
+    const connection = await DB.pool.getConnection();
+    const [rows]: any[] = await connection.query(`SELECT UNIX_TIMESTAMP(hashrate_timestamp) as timestamp from hashrates`);
+    connection.release();
+    
+    return rows.map(val => val.timestamp);
+  }
+}
+
+export default new HashratesRepository();