fix: download gif files (#5445)

* fix: download gif files

* add test for gif extension

* fix the gif animations at android devices

* remove the space

Co-authored-by: atulsingh98 <atulsingh.17is@saividya.ac.in>

android/app/build.gradle

@@ -380,6 +380,7 @@ dependencies {
     androidTestImplementation('com.wix:detox:+')
     implementation 'androidx.appcompat:appcompat:1.1.0'
     implementation 'com.facebook.soloader:soloader:0.10.4'
+    implementation 'com.facebook.fresco:animated-gif:2.5.0'
 }
 
 if (isNewArchitectureEnabled()) {

app/lib/methods/handleMediaDownload.test.ts

@@ -55,4 +55,15 @@ describe('Test the getFilename', () => {
 		const filename = getFilename({ type: 'image', mimeType: image_type, title, url: image_url });
 		expect(filename).toBe('help-image-url.png');
 	});
+
+	it('returns the filename with the gif extension from a gif sent by tenor/giphy', () => {
+		const { image_type, image_url, title } = {
+			title: undefined,
+			image_url: 'https://media4.giphy.com/media/bGtO3RlAPHkeQ/giphy.gif',
+			image_type: undefined
+		};
+
+		const filename = getFilename({ type: 'image', mimeType: image_type, title, url: image_url });
+		expect(filename).toBe('giphy.gif');
+	});
 });

app/lib/methods/handleMediaDownload.ts

@@ -68,6 +68,10 @@ export const getFilename = ({
 };
 
 const getExtension = (type: MediaTypes, mimeType?: string, url?: string) => {
+	// support url with gif extension and mimetype undefined, ex.: using the app tenor and giphy.
+	if (url?.split('.').pop() === 'gif') {
+		return 'gif';
+	}
 	if (!mimeType) {
 		return defaultType[type];
 	}