From aacea38e0789aa44870965459363710fcab5f97d Mon Sep 17 00:00:00 2001
From: Jason D'Amour <jasondamour98@gmail.com>
Date: Fri, 30 Jun 2023 20:02:02 -0500
Subject: [PATCH] feat: allow the `images` input to be empty, to output just
 tags

Signed-off-by: Jason D'Amour <jasondamour98@gmail.com>
---
 src/main.ts |  4 ----
 src/meta.ts | 21 +++++++++++++++++----
 2 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/src/main.ts b/src/main.ts
index 2711e5d..b3d8fc8 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -15,10 +15,6 @@ actionsToolkit.run(
   // main
   async () => {
     const inputs: Inputs = getInputs();
-    if (inputs.images.length == 0) {
-      throw new Error(`images input required`);
-    }
-
     const toolkit = new Toolkit({githubToken: inputs.githubToken});
     const context = await getContext(inputs.context);
     const repo = await toolkit.github.repoData();
diff --git a/src/meta.ts b/src/meta.ts
index a09f72d..febda9b 100644
--- a/src/meta.ts
+++ b/src/meta.ts
@@ -441,14 +441,27 @@ export class Meta {
       return [];
     }
     const tags: Array<string> = [];
-    for (const imageName of this.getImageNames()) {
-      tags.push(`${imageName}:${this.version.main}`);
+    const images = this.getImageNames();
+    if (Array.isArray(images) && images.length) {
+      for (const imageName of images) {
+        tags.push(`${imageName}:${this.version.main}`);
+        for (const partial of this.version.partial) {
+          tags.push(`${imageName}:${partial}`);
+        }
+        if (this.version.latest) {
+          const latestTag = `${this.flavor.prefixLatest ? this.flavor.prefix : ''}latest${this.flavor.suffixLatest ? this.flavor.suffix : ''}`;
+          tags.push(`${imageName}:${Meta.sanitizeTag(latestTag)}`);
+        }
+      }
+    }
+    else {
+      tags.push(this.version.main);
       for (const partial of this.version.partial) {
-        tags.push(`${imageName}:${partial}`);
+        tags.push(partial);
       }
       if (this.version.latest) {
         const latestTag = `${this.flavor.prefixLatest ? this.flavor.prefix : ''}latest${this.flavor.suffixLatest ? this.flavor.suffix : ''}`;
-        tags.push(`${imageName}:${Meta.sanitizeTag(latestTag)}`);
+        tags.push(Meta.sanitizeTag(latestTag));
       }
     }
     return tags;