feat(nestjs): migrate to NestJS

packages/server/src/modules/FinancialStatements/common/TableSheetPdf.ts

@@ -0,0 +1,81 @@
+import * as R from 'ramda';
+import { ITableColumn, ITableData, ITableRow } from '../types/Table.types';
+import { FinancialTableStructure } from './FinancialTableStructure';
+import { tableClassNames } from '../utils';
+import { Injectable } from '@nestjs/common';
+import { TemplateInjectable } from '../../TemplateInjectable/TemplateInjectable.service';
+import { ChromiumlyTenancy } from '../../ChromiumlyTenancy/ChromiumlyTenancy.service';
+
+@Injectable()
+export class TableSheetPdf {
+  /**
+   * @param {TemplateInjectable} templateInjectable - The template injectable service.
+   * @param {ChromiumlyTenancy} chromiumlyTenancy - The chromiumly tenancy service.
+   */
+  constructor(
+    private readonly templateInjectable: TemplateInjectable,
+    private readonly chromiumlyTenancy: ChromiumlyTenancy,
+  ) {}
+
+  /**
+   * Converts the table data into a PDF format.
+   * @param {ITableData} table - The table data to be converted.
+   * @param {string} sheetName - The name of the sheet.
+   * @param {string} sheetDate - The date of the sheet.
+   * @returns A promise that resolves with the PDF conversion result.
+   */
+  public async convertToPdf(
+    table: ITableData,
+    sheetName: string,
+    sheetDate: string,
+    customCSS?: string,
+  ): Promise<Buffer> {
+    // Prepare columns and rows for PDF conversion
+    const columns = this.tablePdfColumns(table.columns);
+    const rows = this.tablePdfRows(table.rows);
+
+    const landscape = columns.length > 4;
+
+    // Generate HTML content from the template
+    const htmlContent = await this.templateInjectable.render(
+      'modules/financial-sheet',
+      {
+        table: { rows, columns },
+        sheetName,
+        sheetDate,
+        customCSS,
+      },
+    );
+    // Convert the HTML content to PDF
+    return this.chromiumlyTenancy.convertHtmlContent(htmlContent, {
+      margins: { top: 0, bottom: 0, left: 0, right: 0 },
+      landscape,
+    });
+  }
+
+  /**
+   * Converts the table columns to pdf columns.
+   * @param {ITableColumn[]} columns
+   * @returns {ITableColumn[]}
+   */
+  private tablePdfColumns = (columns: ITableColumn[]): ITableColumn[] => {
+    return columns;
+  };
+
+  /**
+   * Converts the table rows to pdf rows.
+   * @param {ITableRow[]} rows - The table rows to be converted.
+   * @returns {ITableRow[]} - The converted table rows.
+   */
+  private tablePdfRows = (rows: ITableRow[]): ITableRow[] => {
+    const curriedFlatNestedTree = R.curry(
+      FinancialTableStructure.flatNestedTree,
+    );
+    const flatNestedTree = curriedFlatNestedTree(R.__, {
+      nestedPrefix: '<span style="padding-left: 15px;"></span>',
+    });
+
+    // @ts-ignore
+    return R.compose(tableClassNames, flatNestedTree)(rows);
+  };
+}