refactor: balance sheet to nestjs

temp/CashFlowStatement/CashflowSheetMeta.ts

@@ -0,0 +1,36 @@
+import moment from 'moment';
+import { Injectable } from '@nestjs/common';
+import { FinancialSheetMeta } from '../../common/FinancialSheetMeta';
+import {
+  ICashFlowStatementMeta,
+  ICashFlowStatementQuery,
+} from './Cashflow.types';
+
+@Injectable()
+export class CashflowSheetMeta {
+  constructor(private readonly financialSheetMeta: FinancialSheetMeta) {}
+
+  /**
+   * Cashflow sheet meta.
+   * @param {ICashFlowStatementQuery} query
+   * @returns {Promise<ICashFlowStatementMeta>}
+   */
+  public async meta(
+    query: ICashFlowStatementQuery,
+  ): Promise<ICashFlowStatementMeta> {
+    const meta = await this.financialSheetMeta.meta();
+    const formattedToDate = moment(query.toDate).format('YYYY/MM/DD');
+    const formattedFromDate = moment(query.fromDate).format('YYYY/MM/DD');
+    const formattedDateRange = `From ${formattedFromDate} | To ${formattedToDate}`;
+
+    const sheetName = 'Statement of Cash Flow';
+
+    return {
+      ...meta,
+      sheetName,
+      formattedToDate,
+      formattedFromDate,
+      formattedDateRange,
+    };
+  }
+}