From 27793b3b80296306dfa06d1d7ebe1b5e6407d282 Mon Sep 17 00:00:00 2001
From: Austin Jones <implAustin@gmail.com>
Date: Mon, 21 Dec 2020 21:56:41 -0500
Subject: [PATCH] Add support for the `cache-hit` output

---
 action.yml     |  3 +++
 src/restore.ts | 10 ++++++++++
 2 files changed, 13 insertions(+)

diff --git a/action.yml b/action.yml
index 164c909..22b0847 100644
--- a/action.yml
+++ b/action.yml
@@ -11,6 +11,9 @@ inputs:
   working-directory:
     description: "The working directory this action should operate in"
     required: false
+outputs:
+  cache-hit:
+    description: 'A boolean value that indicates an exact match was found'
 runs:
   using: "node12"
   main: "dist/restore/index.js"
diff --git a/src/restore.ts b/src/restore.ts
index ec7f7b3..9f226c5 100644
--- a/src/restore.ts
+++ b/src/restore.ts
@@ -22,12 +22,22 @@ async function run() {
 
         await cleanTarget(packages);
       }
+
+      setCacheHitOutput(restoreKey === key);
     } else {
       core.info("No cache found.");
+
+      setCacheHitOutput(false);
     }
   } catch (e) {
+    setCacheHitOutput(false);
+
     core.info(`[warning] ${e.message}`);
   }
 }
 
+function setCacheHitOutput(cacheHit: boolean): void {
+  core.setOutput("cache-hit", cacheHit.toString());
+}
+
 run();