Generate daily average hashrate data

backend/src/repositories/BlocksRepository.ts

@@ -149,6 +149,40 @@ class BlocksRepository {
     return <number>rows[0].blockCount;
   }
 
+  /**
+   * Get blocks count between two dates
+   * @param poolId 
+   * @param from - The oldest timestamp
+   * @param to - The newest timestamp
+   * @returns 
+   */
+  public async $blockCountBetweenTimestamp(poolId: number | null, from: number, to: number): Promise<number> {
+    const params: any[] = [];
+    let query = `SELECT
+      count(height) as blockCount,
+      max(height) as lastBlockHeight
+      FROM blocks`;
+
+    if (poolId) {
+      query += ` WHERE pool_id = ?`;
+      params.push(poolId);
+    }
+
+    if (poolId) {
+      query += ` AND`;
+    } else {
+      query += ` WHERE`;
+    }
+    query += ` UNIX_TIMESTAMP(blockTimestamp) BETWEEN '${from}' AND '${to}'`;
+
+    // logger.debug(query);
+    const connection = await DB.pool.getConnection();
+    const [rows] = await connection.query(query, params);
+    connection.release();
+
+    return <number>rows[0];
+  }
+
   /**
    * Get the oldest indexed block
    */