implement feature #616 (#628)

* add outputs variable 'downloaded_files'

* make all files can get by indexer

* use dot '.' to access array member instead of []

* add 'f' prefix

* build dist/index.js

* use '_' to access files array member

* add outputs description

* remove outputs like 'downloaded_file_*'

* try fix build error in example expression

* Fix typo, move usage instructions to README

Author: vcup

.github/workflows/ci.yml

@@ -80,3 +80,6 @@ jobs:
           echo ${{steps.download-private.outputs.tag_name}}
         else echo "Unable to read output variable from step download-private"; exit 1
         fi
+
+        echo "Downloaded files:"
+        echo ${{steps.download-public.outputs.downloaded_files}}

README.md

@@ -67,6 +67,12 @@ A Github Action to download assets from github release. It can download specifie
 > ${{steps.<step-id>.outputs.tag_name}}
 > ```
 
+- `downloaded_files` it outputs an array of downloaded files
+
+> It can be used as follows
+>
+> `${{ fromJson(steps.<step-id>.outputs.downloaded_files)[0] }}`
+
 ## Scenarios
 
 ### Download asset from the latest release in the current repository

action.yml

@@ -49,6 +49,8 @@ inputs:
 outputs:
   tag_name:
     description: "The github tag used to download the release"
+  downloaded_files:
+    description: "The array of downloaded files, useful when using wildcard '*' to download multiple files."      
 
 runs:
   using: "node16"

dist/index.js

@@ -42,18 +42,21 @@ export class ReleaseDownloader {
       )
     }
 
-    // Set the output variables for use by other actions
-    core.setOutput("tag_name", ghRelease.tag_name)
-
     const resolvedAssets: DownloadMetaData[] = this.resolveAssets(
       ghRelease,
       downloadSettings
     )
 
-    return await this.downloadReleaseAssets(
+    const result = await this.downloadReleaseAssets(
       resolvedAssets,
       downloadSettings.outFilePath
     )
+
+    // Set the output variables for use by other actions
+    core.setOutput("tag_name", ghRelease.tag_name)
+    core.setOutput("downloaded_files", result)
+
+    return result
   }
 
   /**