add server to monorepo.

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

@@ -0,0 +1,118 @@
+import * as R from 'ramda';
+import { sumBy } from 'lodash'
+import {
+  IFinancialCommonHorizDatePeriodNode,
+  IFinancialCommonNode,
+  IFinancialNodeWithPreviousYear,
+} from '@/interfaces';
+
+export const FinancialPreviousYear = (Base) =>
+  class extends Base {
+    // ---------------------------
+    // # Common Node
+    // ---------------------------
+    /**
+     * Assoc previous year change attribute to account node.
+     * @param    {IProfitLossSheetAccountNode} accountNode
+     * @returns  {IProfitLossSheetAccountNode}
+     */
+    protected assocPreviousYearChangetNode = (
+      node: IFinancialCommonNode & IFinancialNodeWithPreviousYear
+    ): IFinancialNodeWithPreviousYear => {
+      const change = this.getAmountChange(
+        node.total.amount,
+        node.previousYear.amount
+      );
+      return R.assoc('previousYearChange', this.getAmountMeta(change), node);
+    };
+
+    /**
+     * Assoc previous year percentage attribute to account node.
+     *
+     * % increase = Increase ÷ Original Number × 100.
+     *
+     * @param   {IProfitLossSheetAccountNode} accountNode
+     * @returns {IProfitLossSheetAccountNode}
+     */
+    protected assocPreviousYearPercentageNode = (
+      node: IFinancialCommonNode & IFinancialNodeWithPreviousYear
+    ): IFinancialNodeWithPreviousYear => {
+      const percentage = this.getPercentageBasis(
+        node.previousYear.amount,
+        node.previousYearChange.amount
+      );
+      return R.assoc(
+        'previousYearPercentage',
+        this.getPercentageAmountMeta(percentage),
+        node
+      );
+    };
+
+    /**
+     * Assoc previous year change attribute to account node.
+     * @param    {IProfitLossSheetAccountNode} accountNode
+     * @returns  {IProfitLossSheetAccountNode}
+     */
+    protected assocPreviousYearTotalChangeNode = (
+      node: IFinancialCommonNode & IFinancialNodeWithPreviousYear
+    ): IFinancialNodeWithPreviousYear => {
+      const change = this.getAmountChange(
+        node.total.amount,
+        node.previousYear.amount
+      );
+      return R.assoc(
+        'previousYearChange',
+        this.getTotalAmountMeta(change),
+        node
+      );
+    };
+
+    /**
+     * Assoc previous year percentage attribute to account node.
+     * @param   {IProfitLossSheetAccountNode} accountNode
+     * @returns {IProfitLossSheetAccountNode}
+     */
+    protected assocPreviousYearTotalPercentageNode = (
+      node: IFinancialCommonNode & IFinancialNodeWithPreviousYear
+    ): IFinancialNodeWithPreviousYear => {
+      const percentage = this.getPercentageBasis(
+        node.previousYear.amount,
+        node.previousYearChange.amount
+      );
+      return R.assoc(
+        'previousYearPercentage',
+        this.getPercentageTotalAmountMeta(percentage),
+        node
+      );
+    };
+
+    /**
+     * Assoc previous year from/to date to horizontal nodes.
+     * @param horizNode
+     * @returns
+     */
+    protected assocPreviousYearHorizNodeFromToDates = (
+      horizNode: IFinancialCommonHorizDatePeriodNode
+    ) => {
+      const PYFromDate = this.getPreviousYearDate(horizNode.fromDate.date);
+      const PYToDate = this.getPreviousYearDate(horizNode.toDate.date);
+
+      return R.compose(
+        R.assoc('previousYearToDate', this.getDateMeta(PYToDate)),
+        R.assoc('previousYearFromDate', this.getDateMeta(PYFromDate))
+      )(horizNode);
+    };
+
+    /**
+     * Retrieves PP total sumation of the given horiz index node. 
+     * @param   {number} index 
+     * @param   {} node 
+     * @returns {number}
+     */
+    protected getPYHorizNodesTotalSumation = (index: number, node): number => {
+      return sumBy(
+        node.children,
+        `horizontalTotals[${index}].previousYear.amount`
+      )
+    }
+  };