From 47919e486916c16bbf755122ac2f131075ff4289 Mon Sep 17 00:00:00 2001
From: Shelby Holden <sholden@broadinstitute.org>
Date: Wed, 21 Jun 2023 09:33:26 -0400
Subject: [PATCH] Hello world CLI

---
 java-pfb-cli/README.md                        |  6 ++++
 java-pfb-cli/build.gradle                     | 30 +++++++++++++++++++
 .../src/main/java/JavaPfbCommand.java         | 20 +++++++++++++
 settings.gradle                               |  2 ++
 4 files changed, 58 insertions(+)
 create mode 100644 java-pfb-cli/README.md
 create mode 100644 java-pfb-cli/build.gradle
 create mode 100644 java-pfb-cli/src/main/java/JavaPfbCommand.java

diff --git a/java-pfb-cli/README.md b/java-pfb-cli/README.md
new file mode 100644
index 00000000..b66dd36f
--- /dev/null
+++ b/java-pfb-cli/README.md
@@ -0,0 +1,6 @@
+Current usage of CLI:
+First, run "fatJar" gradle task in java-pfb-cli
+
+Then, you can use the CLI with the following command:
+java -cp "java-pfb-cli/build/libs/java-pfb-cli.jar" JavaPfbCommand <command> <args>
+Only command right now: "hello"
\ No newline at end of file
diff --git a/java-pfb-cli/build.gradle b/java-pfb-cli/build.gradle
new file mode 100644
index 00000000..904e44b0
--- /dev/null
+++ b/java-pfb-cli/build.gradle
@@ -0,0 +1,30 @@
+plugins {
+    id 'java'
+}
+
+version 'unspecified'
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.8.1'
+    testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.8.1'
+    implementation 'info.picocli:picocli:4.7.4'
+}
+
+task fatJar(type: Jar) {
+    manifest {
+        attributes 'Main-Class': "JavaPfbCommand"
+    }
+    archiveBaseName.set('java-pfb-cli')
+    from {
+        configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
+    }
+    with jar
+}
+
+test {
+    useJUnitPlatform()
+}
\ No newline at end of file
diff --git a/java-pfb-cli/src/main/java/JavaPfbCommand.java b/java-pfb-cli/src/main/java/JavaPfbCommand.java
new file mode 100644
index 00000000..8f25be37
--- /dev/null
+++ b/java-pfb-cli/src/main/java/JavaPfbCommand.java
@@ -0,0 +1,20 @@
+import picocli.CommandLine;
+
+import static picocli.CommandLine.Command;
+
+@Command(name = "pfb")
+public class JavaPfbCommand implements Runnable {
+    public static void main(String[] args) {
+        CommandLine.run(new JavaPfbCommand(), args);
+    }
+
+    @Override
+    public void run() {
+        System.out.println("A java implementation of pyPFB");
+    }
+
+    @Command(name = "hello")
+    public void helloCommand() {
+        System.out.println("Hello world!");
+    }
+}
\ No newline at end of file
diff --git a/settings.gradle b/settings.gradle
index a0165656..5451eb0e 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -2,3 +2,5 @@ rootProject.name = 'javapfb'
 include('service', 'client', 'integration')
 
 gradle.ext.releaseVersion = '0.11.0'
+include 'java-pfb-cli'
+