jooby-cli: make the create command the default command #3537

Author: jknack

modules/jooby-cli/src/main/java/io/jooby/cli/Cli.java

@@ -9,6 +9,7 @@
 import java.util.List;
 import java.util.Objects;
 import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 import org.jline.reader.EndOfFileException;
 import org.jline.reader.LineReader;
@@ -124,7 +125,7 @@ public static void main(String[] args) throws IOException {
         try {
           String line = reader.readLine(prompt);
           ParsedLine pl = reader.getParser().parse(line, 0);
-          String[] arguments = pl.words().toArray(new String[0]);
+          String[] arguments = rewrite(cmd, pl.words().toArray(new String[0]));
           cmd.execute(arguments);
         } catch (UserInterruptException e) {
           System.exit(0);
@@ -134,4 +135,13 @@ public static void main(String[] args) throws IOException {
       }
     }
   }
+
+  static String[] rewrite(CommandLine cmd, String... command) {
+    if (command.length > 1) {
+      if (!cmd.getSubcommands().containsKey(command[0])) {
+        return Stream.concat(Stream.of("create"), Stream.of(command)).toArray(String[]::new);
+      }
+    }
+    return command;
+  }
 }

modules/jooby-cli/src/main/java/io/jooby/cli/CreateCmd.java

@@ -44,7 +44,9 @@
  *
  * @since 2.0.6
  */
-@CommandLine.Command(name = "create", description = "Creates a new application")
+@CommandLine.Command(
+    name = "create",
+    description = "Creates a new application. This is the default command/action")
 public class CreateCmd extends Cmd {
   @CommandLine.Parameters(
       description = "Application name or coordinates (groupId:artifactId:version)")

modules/jooby-cli/src/test/java/io/jooby/cli/CliTest.java

@@ -0,0 +1,23 @@
+/*
+ * Jooby https://jooby.io
+ * Apache License Version 2.0 https://jooby.io/LICENSE.txt
+ * Copyright 2014 Edgar Espina
+ */
+package io.jooby.cli;
+
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+
+import picocli.CommandLine;
+
+public class CliTest {
+
+  @Test
+  public void rewriteCommand() {
+    var cmdLine = Mockito.mock(CommandLine.class);
+    var command = Cli.rewrite(cmdLine, "jooby-code-gen", "--mvc");
+    assertArrayEquals(new String[] {"create", "jooby-code-gen", "--mvc"}, command);
+  }
+}