feat(upload-core): upload core file types check (#7)

* feat(upload-core): check fileTypes
* test(upload-core): uploads fileTypes tests
* docs(upload-core): add fileTypes documentation

packages/upload-core/README.md

@@ -9,13 +9,25 @@ npm install @availity/upload-core tus-js-client --save
 
 ## Usage
 
+###Required params
+
+- bucketId
+- customerId
+- clientId
+
+###Optional params
+
+- fileTypes: string array of file extensions to allow (error thrown if file.name does not contain one of the types)
+
 ```js
 import Upload from '@availity/upload-core';
 
 const upload = new Upload(file, {
-  bucketId: 'a',
-  customerId: 'b',
-  clientId: 'c',
+    bucketId: 'a',
+    customerId: 'b',
+    clientId: 'c',
+    fileTypes: ['.png', '.pdf']
 });
 upload.start();
 ```
+

packages/upload-core/upload.js

@@ -23,6 +23,14 @@ class Upload {
       throw Error('[options.clientId] must be defined');
     }
 
+    if (!this.isValidFileType(file.name, options)) {
+      throw Error(
+        `[options.fileTypes] was defined as ${options.fileTypes} but the file ${
+          file.name
+        } does not meet criteria`
+      );
+    }
+
     this.file = file;
     this.options = Object.assign(options, defaults);
     this.percentage = 0;
@@ -170,6 +178,25 @@ class Upload {
     upload.start();
   }
 
+  isValidFileType(fileName, options) {
+    if (options.fileTypes) {
+      if (!fileName) {
+        return false;
+      }
+      for (let i = 0; i < options.fileTypes.length; i++) {
+        options.fileTypes[i] = options.fileTypes[i].toLowerCase();
+      }
+
+      const fileExt = fileName
+        .substring(fileName.lastIndexOf('.'))
+        .toLowerCase();
+      if (options.fileTypes.indexOf(fileExt) < 0) {
+        return false;
+      }
+    }
+    return true;
+  }
+
   abort() {
     if (this.upload) {
       this.upload.abort();

packages/upload-core/upload.test.js

@@ -6,6 +6,13 @@ const options = {
   clientId: 'c',
 };
 
+const optionsWithFileTypes = {
+  bucketId: 'a',
+  customerId: 'b',
+  clientId: 'c',
+  fileTypes: ['.png', '.pdf'],
+};
+
 describe('upload.core', () => {
   it('should be defined', () => {
     expect(Upload).toBeTruthy();
@@ -23,11 +30,27 @@ describe('upload.core', () => {
     }).toThrow('[options.bucketId] must be defined');
   });
 
-  it('should allow single file as constructor arguement', () => {
+  it('should allow single file as constructor argument', () => {
     const file = Buffer.from('hello world'.split(''));
     new Upload(file, options); // eslint-disable-line
   });
 
+  it('should throw error for invalid file type', () => {
+    const file = Buffer.from('hello world'.split(''));
+    file.name = 'notCoolFile.docx';
+    expect(() => {
+      new Upload(file, optionsWithFileTypes); // eslint-disable-line
+    }).toThrow(
+      '[options.fileTypes] was defined as .png,.pdf but the file notCoolFile.docx does not meet criteria'
+    );
+  });
+
+  it('should allow the correct file type', () => {
+    const file = Buffer.from('hello world'.split(''));
+    file.name = 'coolFile.PNG';
+    new Upload(file, optionsWithFileTypes); // eslint-disable-line
+  });
+
   it('should use default options ', () => {
     const file = [Buffer.from('hello world'.split(''))];
     const upload = new Upload(file, options);