notification icons

client/client.go

@@ -47,6 +47,7 @@ type Message struct { // TODO combine with server.message
 	Priority   int
 	Tags       []string
 	Click      string
+	Icon       *Icon
 	Attachment *Attachment
 
 	// Additional fields
@@ -65,6 +66,13 @@ type Attachment struct {
 	Owner   string `json:"-"` // IP address of uploader, used for rate limiting
 }
 
+// Icon represents a message icon
+type Icon struct {
+	Url  string `json:"url"`
+	Type string `json:"type,omitempty"`
+	Size int64  `json:"size,omitempty"`
+}
+
 type subscription struct {
 	ID       string
 	topicURL string

client/options.go

@@ -56,6 +56,11 @@ func WithClick(url string) PublishOption {
 	return WithHeader("X-Click", url)
 }
 
+// WithIcon makes the notification use the given URL as its icon
+func WithIcon(icon string) PublishOption {
+	return WithHeader("X-Icon", icon)
+}
+
 // WithActions adds custom user actions to the notification. The value can be either a JSON array or the
 // simple format definition. See https://ntfy.sh/docs/publish/#action-buttons for details.
 func WithActions(value string) PublishOption {