Shameless self-promotion

src/main/java/com/github/ianparkinson/helog/Helog.java

@@ -60,8 +60,18 @@ public void setHost(String host) {
             description = "Write the stream exactly as received from the Hubitat Elevation.")
     public boolean raw;
 
+    @Option(names = "--kofi",
+            description = "Buy the author a coffee.",
+            help = true)
+    public boolean kofi;
+
     @Override
     public Integer call() throws URISyntaxException {
+        if (kofi) {
+            kofi();
+            return 0;
+        }
+
         URI uri = new URI("ws://" + host + "/" + stream.jsonStream.path());
         WebSocketSource source = new WebSocketSource(uri);
 
@@ -77,6 +87,11 @@ private static <T> JsonStreamPrinter<T> createJsonStreamPrinter(JsonStream<T> js
         return new JsonStreamPrinter<>(jsonStream.type(), jsonStream.formatter());
     }
 
+    public static void kofi() {
+        System.out.println("Thank you!");
+        System.out.println("https://ko-fi.com/ianparkinson");
+    }
+
     public static int run(String... args) {
         return new CommandLine(new Helog()).setCaseInsensitiveEnumValuesAllowed(true).execute(args);
     }

src/test/java/com/github/ianparkinson/helog/HelogKofiTest.java

@@ -0,0 +1,23 @@
+package com.github.ianparkinson.helog;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import com.github.ianparkinson.helog.testing.StdOutExtension;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+public final class HelogKofiTest {
+    @RegisterExtension
+    private final StdOutExtension out = new StdOutExtension();
+
+    @Test
+    public void writesKofiLink() {
+        Helog.run("--kofi");
+        assertThat(out.getContent()).contains("ko-fi.com");
+    }
+
+    @Test
+    public void completesSuccessfully() {
+        assertThat(Helog.run("--kofi")).isEqualTo(0);
+    }
+}