feat: export data apis

Signed-off-by: Pranav C <pranavxc@gmail.com>

packages/nocodb-nest/src/modules/datas/data-alias-export/data-alias-export.controller.ts

@@ -1,4 +1,58 @@
-import { Controller } from '@nestjs/common';
+import { Controller, Get, Request, Response } from '@nestjs/common';
+import { getViewAndModelFromRequestByAliasOrId } from '../../../../../nocodb/src/lib/controllers/dbData/helpers';
+import { Acl } from '../../../middlewares/extract-project-id/extract-project-id.middleware';
+import { View } from '../../../models';
+import { extractCsvData, extractXlsxData } from '../helpers';
+import * as XLSX from 'xlsx';
 
 @Controller('data-alias-export')
-export class DataAliasExportController {}
+export class DataAliasExportController {
+  @Get([
+    '/api/v1/db/data/:orgs/:projectName/:tableName/export/excel',
+    '/api/v1/db/data/:orgs/:projectName/:tableName/views/:viewName/export/excel',
+  ])
+  @Acl('exportExcel')
+  async excelDataExport(@Request() req, @Response() res) {
+    const { model, view } = await getViewAndModelFromRequestByAliasOrId(req);
+    let targetView = view;
+    if (!targetView) {
+      targetView = await View.getDefaultView(model.id);
+    }
+    const { offset, elapsed, data } = await extractXlsxData(targetView, req);
+    const wb = XLSX.utils.book_new();
+    XLSX.utils.book_append_sheet(wb, data, targetView.title);
+    const buf = XLSX.write(wb, { type: 'base64', bookType: 'xlsx' });
+    res.set({
+      'Access-Control-Expose-Headers': 'nc-export-offset',
+      'nc-export-offset': offset,
+      'nc-export-elapsed-time': elapsed,
+      'Content-Disposition': `attachment; filename="${encodeURI(
+        targetView.title,
+      )}-export.xlsx"`,
+    });
+    res.end(buf);
+  }
+  @Get([
+    '/api/v1/db/data/:orgs/:projectName/:tableName/views/:viewName/export/csv',
+    '/api/v1/db/data/:orgs/:projectName/:tableName/export/csv',
+  ])
+  @Acl('exportCsv')
+  async csvDataExport(@Request() req, @Response() res) {
+    const { model, view } = await getViewAndModelFromRequestByAliasOrId(req);
+    let targetView = view;
+    if (!targetView) {
+      targetView = await View.getDefaultView(model.id);
+    }
+    const { offset, elapsed, data } = await extractCsvData(targetView, req);
+
+    res.set({
+      'Access-Control-Expose-Headers': 'nc-export-offset',
+      'nc-export-offset': offset,
+      'nc-export-elapsed-time': elapsed,
+      'Content-Disposition': `attachment; filename="${encodeURI(
+        targetView.title,
+      )}-export.csv"`,
+    });
+    res.send(data);
+  }
+}