csv export

api/package.json

@@ -79,6 +79,7 @@
     "commander": "^5.1.0",
     "cookie-parser": "^1.4.5",
     "cors": "^2.8.5",
+    "csv-express": "^1.2.2",
     "dotenv": "^8.2.0",
     "execa": "^4.0.3",
     "exif-reader": "^1.0.3",
@@ -92,6 +93,7 @@
     "inquirer": "^7.3.3",
     "joi": "^17.1.1",
     "js-yaml": "^3.14.0",
+    "json2csv": "^5.0.1",
     "jsonwebtoken": "^8.5.1",
     "knex": "^0.21.4",
     "knex-schema-inspector": "0.0.9",

api/src/app.ts

@@ -10,6 +10,7 @@ import errorHandler from './middleware/error-handler';
 
 import extractToken from './middleware/extract-token';
 import authenticate from './middleware/authenticate';
+import responseManager from './middleware/response-manager';
 
 import activityRouter from './controllers/activity';
 import assetsRouter from './controllers/assets';
@@ -69,11 +70,9 @@ if (env.NODE_ENV !== 'development') {
 
 app.use('/auth', authRouter)
 
-	.use(authenticate)
-
 	.use('/activity', activityRouter)
 	.use('/assets', assetsRouter)
-	.use('/collections', collectionsRouter)
+	.use('/collections', collectionsRouter, responseManager)
 	.use('/extensions', extensionsRouter)
 	.use('/fields', fieldsRouter)
 	.use('/files', filesRouter)

api/src/exceptions/export-failed.ts

@@ -0,0 +1,7 @@
+import { BaseException } from './base';
+
+export class ExportFailedException extends BaseException {
+	constructor(message: string) {
+		super(message, 500, 'EXPORT_FAILED');
+	}
+}

api/src/exceptions/index.ts

@@ -1,5 +1,6 @@
 export * from './base';
 export * from './collection-not-found';
+export * from './export-failed';
 export * from './field-not-found';
 export * from './forbidden';
 export * from './invalid-credentials';

api/src/middleware/reponse-manager.ts

@@ -1,28 +0,0 @@
-import { RequestHandler } from 'express';
-import asyncHandler from 'express-async-handler';
-import fs from 'fs';
-
-/**
- *  middleware to manage actions on responses such as
- * export / import and caching
- * @todo move caching into here.
- *
- */
-
-const responseManager: RequestHandler = asyncHandler(async (req, res, next) => {
-	if (!req.query.export) return next();
-
-	const exportType = req.query.export;
-
-	if (exportType === 'json') {
-		// have chose to export json
-	}
-
-	if (exportType === 'csv') {
-		// have chosen to export csv
-	}
-
-	return next();
-});
-
-export default responseManager;

api/src/middleware/response-manager.ts

@@ -0,0 +1,44 @@
+import { RequestHandler } from 'express';
+import asyncHandler from 'express-async-handler';
+import { ExportFailedException } from '../exceptions';
+
+/**
+ *  middleware to manage actions on responses such as
+ * export / import and caching
+ * @todo move caching into here.
+ *
+ */
+
+const responseManager: RequestHandler = asyncHandler(async (req, res, next) => {
+	if (!req.query.export) return next();
+	// only want to export out on get
+	if (req.method == 'GET') {
+		const exportType = req.query.export;
+
+		if (exportType == 'json') {
+			// have chosen to export json
+		}
+
+		if (exportType == 'csv') {
+			// have chosen to export csv
+			console.log('get here');
+			const { Parser } = require('json2csv');
+			const exportData = res.json;
+
+			const fields = Object.keys(exportData);
+
+			Parser({ data: exportData }, function (err: any, csvStr: string) {
+				if (err) {
+					throw new ExportFailedException('CSV generation failed');
+				}
+				res.type('text/csv');
+				res.attachment('export-file.csv');
+				res.send(csvStr);
+			});
+		}
+	}
+
+	return next();
+});
+
+export default responseManager;