add server to monorepo.

packages/server/src/services/FinancialStatements/FinancialPreviousPeriod.ts

@@ -0,0 +1,127 @@
+import { sumBy } from 'lodash';
+import {
+  IFinancialDatePeriodsUnit,
+  IFinancialNodeWithPreviousPeriod,
+} from '@/interfaces';
+import * as R from 'ramda';
+
+export const FinancialPreviousPeriod = (Base) =>
+  class extends Base {
+    // ---------------------------
+    // # Common Node.
+    // ---------------------------
+    /**
+     * Assoc previous period percentage attribute to account node.
+     * @param   {IProfitLossSheetAccountNode} accountNode
+     * @returns {IFinancialNodeWithPreviousPeriod}
+     */
+    protected assocPreviousPeriodPercentageNode = (
+      accountNode: IProfitLossSheetAccountNode
+    ): IFinancialNodeWithPreviousPeriod => {
+      const percentage = this.getPercentageBasis(
+        accountNode.previousPeriod.amount,
+        accountNode.previousPeriodChange.amount
+      );
+      return R.assoc(
+        'previousPeriodPercentage',
+        this.getPercentageAmountMeta(percentage),
+        accountNode
+      );
+    };
+
+    /**
+     * Assoc previous period total attribute to account node.
+     * @param   {IProfitLossSheetAccountNode} accountNode
+     * @returns {IFinancialNodeWithPreviousPeriod}
+     */
+    protected assocPreviousPeriodChangeNode = (
+      accountNode: IProfitLossSheetAccountNode
+    ): IFinancialNodeWithPreviousPeriod => {
+      const change = this.getAmountChange(
+        accountNode.total.amount,
+        accountNode.previousPeriod.amount
+      );
+      return R.assoc(
+        'previousPeriodChange',
+        this.getAmountMeta(change),
+        accountNode
+      );
+    };
+
+    /**
+     * Assoc previous period percentage attribute to account node.
+     *
+     * % change = Change ÷ Original Number × 100.
+     *
+     * @param   {IProfitLossSheetAccountNode} accountNode
+     * @returns {IFinancialNodeWithPreviousPeriod}
+     */
+    protected assocPreviousPeriodTotalPercentageNode = (
+      accountNode: IProfitLossSheetAccountNode
+    ): IFinancialNodeWithPreviousPeriod => {
+      const percentage = this.getPercentageBasis(
+        accountNode.previousPeriod.amount,
+        accountNode.previousPeriodChange.amount
+      );
+      return R.assoc(
+        'previousPeriodPercentage',
+        this.getPercentageTotalAmountMeta(percentage),
+        accountNode
+      );
+    };
+
+    /**
+     * Assoc previous period total attribute to account node.
+     * @param   {IProfitLossSheetAccountNode} accountNode
+     * @returns {IFinancialNodeWithPreviousPeriod}
+     */
+    protected assocPreviousPeriodTotalChangeNode = (
+      accountNode: any
+    ): IFinancialNodeWithPreviousPeriod => {
+      const change = this.getAmountChange(
+        accountNode.total.amount,
+        accountNode.previousPeriod.amount
+      );
+      return R.assoc(
+        'previousPeriodChange',
+        this.getTotalAmountMeta(change),
+        accountNode
+      );
+    };
+
+    /**
+     * Assoc previous year from/to date to horizontal nodes.
+     * @param horizNode
+     * @returns {IFinancialNodeWithPreviousPeriod}
+     */
+    protected assocPreviousPeriodHorizNodeFromToDates = R.curry(
+      (
+        periodUnit: IFinancialDatePeriodsUnit,
+        horizNode: any
+      ): IFinancialNodeWithPreviousPeriod => {
+        const { fromDate: PPFromDate, toDate: PPToDate } =
+          this.getPreviousPeriodDateRange(
+            horizNode.fromDate.date,
+            horizNode.toDate.date,
+            periodUnit
+          );
+        return R.compose(
+          R.assoc('previousPeriodToDate', this.getDateMeta(PPToDate)),
+          R.assoc('previousPeriodFromDate', this.getDateMeta(PPFromDate))
+        )(horizNode);
+      }
+    );
+
+    /**
+     * Retrieves PP total sumation of the given horiz index node.
+     * @param {number} index
+     * @param node
+     * @returns {number}
+     */
+    protected getPPHorizNodesTotalSumation = (index: number, node): number => {
+      return sumBy(
+        node.children,
+        `horizontalTotals[${index}].previousPeriod.amount`
+      );
+    };
+  };