Merge pull request #1 from kumparan/feature/BAN-4273-generate-media-url

feature: generate media URL

CHANGELOG.md

@@ -1,9 +1,16 @@
 # go-utils
 
+<a name="v1.1.0"></a>
+## [v1.1.0] - 2019-12-31
+### New Features
+- generate media URL
+
+
 <a name="v1.0.0"></a>
 ## v1.0.0 - 2019-12-23
 ### New Features
 - init go-utils
 
 
-[Unreleased]: https://github.com/kumparan/kumnats/compare/v1.0.0...HEAD
+[Unreleased]: https://github.com/kumparan/kumnats/compare/v1.1.0...HEAD
+[v1.1.0]: https://github.com/kumparan/kumnats/compare/v1.0.0...v1.1.0

media.go

@@ -0,0 +1,42 @@
+package utils
+
+import (
+	"strings"
+)
+
+const (
+	// _BigPicture :nodoc:
+	_BigPicture = "big_picture"
+	// _LargeIcon :nodoc:
+	_LargeIcon = "large_icon"
+	// _IOSAttachment :nodoc:
+	_IOSAttachment = "ios_attahcment"
+)
+
+// GeneratePushNotificationMediaURL Generates manipulated media URL for push notification purpose
+// e.g. GeneratePushNotificationMediaURL("http://mycdn.com", "http://my.image.com/image/upload/v123/image.jpg", LargeIcon) => http://mycdn.com/image/upload/v123/image.jpg
+func GeneratePushNotificationMediaURL(cdnURL, mediaSrcURL, imageType string) string {
+	if mediaSrcURL == "" || cdnURL == "" {
+		return ""
+	}
+
+	splitMediaSrcImageURL := strings.Split(mediaSrcURL, "/")
+	coverMediaFile := splitMediaSrcImageURL[len(splitMediaSrcImageURL)-2] + "/" + splitMediaSrcImageURL[len(splitMediaSrcImageURL)-1]
+
+	var param string
+	switch imageType {
+
+	case _LargeIcon:
+		param = "image/upload/fl_progressive,fl_lossy,c_fill,g_face,q_auto:best,w_256,ar_1:1"
+
+	case _BigPicture:
+		param = "image/upload/fl_progressive,fl_lossy,c_fill,g_face,q_auto:best,w_1440,h_720"
+
+	case _IOSAttachment:
+		param = "image/upload/fl_progressive,fl_lossy,c_fill,g_face,q_auto:best,w_1024,h_1024"
+	}
+
+	mediaURL := cdnURL + "/" + param + "/" + coverMediaFile
+
+	return mediaURL
+}

media_test.go

@@ -0,0 +1,13 @@
+package utils
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_GeneratePushNotificationMediaURL(t *testing.T) {
+	externalMediaURL := "https://this.is/test/image/upload/123/234.jpg"
+	res := GeneratePushNotificationMediaURL("https://this.is", externalMediaURL, _LargeIcon)
+	assert.Equal(t, "https://this.is/image/upload/fl_progressive,fl_lossy,c_fill,g_face,q_auto:best,w_256,ar_1:1/123/234.jpg", res)
+}