Merge pull request #50 from SG5/language-support

add language to options, fix #46

README.md

@@ -37,13 +37,15 @@ Additionally you can pass an options object which should add more functionality
 | Property Name | Result        |
 | ------------- |:-------------:|
 | imagesPropertyType  (**optional**) (ex: 'og')     | Fetches images only with the specified property, `meta[property='${imagesPropertyType}:image']` |
+| language  (**optional**) (ex: 'de', 'en-US')     | Fetch content with specific language |
 
 
 ```javascript
 LinkPreview.getPreview(
   'https://www.youtube.com/watch?v=MejbOFk7H6c',
   {
     imagesPropertyType: 'og', // fetches only open-graph images
+    language: 'fr-CA', // fetches site for French language
   })
   .then(data => console.debug(data));
 ```

__tests__/index.spec.js

@@ -68,6 +68,14 @@ describe('link preview', () => {
     expect(linkInfo.contentType.toLowerCase()).to.be.equal('text/html; charset=utf-8');
   });
 
+  it('should make request with different languages', async () => {
+    let linkInfo = await LinkPreview.getPreview('https://www.hsbc.ca/', {language: 'fr'});
+    expect(linkInfo.title).to.be.equal('Particuliers | HSBC Canada');
+
+    linkInfo = await LinkPreview.getPreview('https://www.hsbc.ca/');
+    expect(linkInfo.title).to.be.equal('HSBC Personal Banking | HSBC Canada');
+  });
+
   it('should handle audio urls', async () => {
     const linkInfo = await LinkPreview.getPreview('https://ondemand.npr.org/anon.npr-mp3/npr/atc/2007/12/20071231_atc_13.mp3');
 

index.js

@@ -22,7 +22,13 @@ exports.getPreview = function (text, options) {
     });
 
     if (detectedUrl) {
-      fetch(detectedUrl)
+      var fetchOptions = {}
+      if (options && options.language) {
+        fetchOptions.headers = {
+          'Accept-Language': options.language
+        }
+      }
+      fetch(detectedUrl, fetchOptions)
         .then(function (response) {
 
           // get final URL (after any redirects)