From 8ae61871a3eba088bd24e5c6696bd0456373c663 Mon Sep 17 00:00:00 2001
From: Sridhar Ratnakumar <srid@srid.ca>
Date: Wed, 7 Apr 2021 23:45:56 -0400
Subject: [PATCH] Actually use the clap dependency

---
 .github/workflows/ci.yml |  1 +
 src/main.rs              | 21 +++++++++++++++------
 2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 45ea1bf..c26a82a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,4 +14,5 @@ jobs:
         extra_nix_config: |
           experimental-features = nix-command flakes
     - run: nix develop -c rustc --version
+    - run: nix run . -- ping
     - run: nix-build
diff --git a/src/main.rs b/src/main.rs
index 965f785..e5af86a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,4 +1,6 @@
 use std::fmt::{Display, Formatter};
+use clap::{App, SubCommand};
+
 
 enum VertDir {
     Up,
@@ -107,11 +109,18 @@ impl Display for Game {
 }
 
 fn main () {
-    let mut game = Game::new();
-    let sleep_duration = std::time::Duration::from_millis(33);
-    loop {
-        println!("{}", game);
-        game.step();
-        std::thread::sleep(sleep_duration);
+    let matches = App::new("bouncy")
+        .version("1.0")
+        .subcommand(SubCommand::with_name("ping")).get_matches();
+    if let Some(_matches) = matches.subcommand_matches("ping") {
+        println!("pong")
+    } else {
+        let mut game = Game::new();
+        let sleep_duration = std::time::Duration::from_millis(33);
+        loop {
+            println!("{}", game);
+            game.step();
+            std::thread::sleep(sleep_duration);
+        }
     }
 }