feat: Add support for the mutable-content flag (#179)

README.md

@@ -415,6 +415,7 @@ Request body must has a notifications array. The following is a parameter table
 | badge                   | int          | badge count                                                                                       | -        | only iOS                                                      |
 | category                | string       | the UIMutableUserNotificationCategory object                                                      | -        | only iOS                                                      |
 | alert                   | string array | payload of a iOS message                                                                          | -        | only iOS. See the [detail](#ios-alert-payload)                |
+| mutable_content       | bool         | enable Notification Service app extension.                                                            | -        | only iOS(10.0+).
 
 ### iOS alert payload
 

gorush/notification.go

@@ -81,6 +81,7 @@ type PushNotification struct {
 	Category       string   `json:"category,omitempty"`
 	URLArgs        []string `json:"url-args,omitempty"`
 	Alert          Alert    `json:"alert,omitempty"`
+	MutableContent bool     `json:"mutable-content,omitempty"`
 }
 
 // CheckMessage for check request message
@@ -314,6 +315,10 @@ func GetIOSNotification(req PushNotification) *apns.Notification {
 		payload.Badge(*req.Badge)
 	}
 
+	if req.MutableContent {
+		payload.MutableContent()
+	}
+
 	if len(req.Sound) > 0 {
 		payload.Sound(req.Sound)
 	}

gorush/notification_test.go

@@ -135,6 +135,7 @@ func TestSendZeroValueForBadgeKey(t *testing.T) {
 		Message:          message,
 		Sound:            test,
 		ContentAvailable: true,
+		MutableContent:   true,
 	}
 
 	notification := GetIOSNotification(req)
@@ -151,6 +152,7 @@ func TestSendZeroValueForBadgeKey(t *testing.T) {
 	badge, _ := jsonparser.GetInt(data, "aps", "badge")
 	sound, _ := jsonparser.GetString(data, "aps", "sound")
 	contentAvailable, _ := jsonparser.GetInt(data, "aps", "content-available")
+	mutableContent, _ := jsonparser.GetInt(data, "aps", "mutable-content")
 
 	if req.Badge != nil {
 		t.Errorf("req.Badge must be nil")
@@ -163,6 +165,7 @@ func TestSendZeroValueForBadgeKey(t *testing.T) {
 	assert.Equal(t, 0, int(badge))
 	assert.Equal(t, test, sound)
 	assert.Equal(t, 1, int(contentAvailable))
+	assert.Equal(t, 1, int(mutableContent))
 
 	// Add Bage
 	expectBadge := 10