import {createFormatter} from 'app/common/ValueFormatter'; import {ActiveDoc} from 'app/server/lib/ActiveDoc'; import {ExportData, exportSection, Filter} from 'app/server/lib/Export'; import * as bluebird from 'bluebird'; import * as csv from 'csv'; import * as express from 'express'; // promisify csv bluebird.promisifyAll(csv); /** * Returns a csv stream that can be transformed or parsed. See https://github.com/wdavidw/node-csv * for API details. * * @param {Object} activeDoc - the activeDoc that the table being converted belongs to. * @param {Integer} viewSectionId - id of the viewsection to export. * @param {Integer[]} activeSortOrder (optional) - overriding sort order. * @param {Filter[]} filters (optional) - filters defined from ui. * @return {Promise} Promise for the resulting CSV. */ export async function makeCSV( activeDoc: ActiveDoc, viewSectionId: number, sortOrder: number[], filters: Filter[], req: express.Request) { const data = await exportSection(activeDoc, viewSectionId, sortOrder, filters, req); const file = convertToCsv(data); return file; } function convertToCsv({ rowIds, access, columns: viewColumns, docSettings }: ExportData) { // create formatters for columns const formatters = viewColumns.map(col => createFormatter(col.type, col.widgetOptions, docSettings)); // Arrange the data into a row-indexed matrix, starting with column headers. const csvMatrix = [viewColumns.map(col => col.label)]; // populate all the rows with values as strings rowIds.forEach(row => { csvMatrix.push(access.map((getter, c) => formatters[c].formatAny(getter(row)))); }); return csv.stringifyAsync(csvMatrix); }