feat: export reports csv and xlsx (#286)

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

@@ -0,0 +1,48 @@
+import { ITableRow } from '@/interfaces';
+import { flatNestedTree } from '@/utils/deepdash';
+import { repeat } from 'lodash';
+
+interface FlatNestTreeOpts {
+  nestedPrefix?: string;
+  nestedPrefixIndex?: number;
+}
+
+export class FinancialTableStructure {
+  /**
+   * Converts the given table object with nested rows in flat rows.
+   * @param {ITableRow[]}
+   * @param {FlatNestTreeOpts}
+   * @returns {ITableRow[]}
+   */
+  public static flatNestedTree = (
+    obj: ITableRow[],
+    options?: FlatNestTreeOpts
+  ): ITableRow[] => {
+    const parsedOptions = {
+      nestedPrefix: '   ',
+      nestedPrefixIndex: 0,
+      ...options,
+    };
+    const { nestedPrefixIndex, nestedPrefix } = parsedOptions;
+
+    return flatNestedTree(
+      obj,
+      (item, key, context) => {
+        const cells = item.cells.map((cell, index) => {
+          return {
+            ...cell,
+            value:
+              (context.depth > 1 && nestedPrefixIndex === index
+                ? repeat(nestedPrefix, context.depth)
+                : '') + cell.value,
+          };
+        });
+        return {
+          ...item,
+          cells,
+        };
+      },
+      parsedOptions
+    );
+  };
+}