PowerShell · SufficientDaikon · Mar 22, 2026
@@ -1,10 +1,11 @@
 # Get Changed Files Action
 
-A reusable composite action that retrieves the list of files changed in a pull request or push event.
+A reusable composite action that retrieves the list of files changed in a pull request or push event, or all matching files for scheduled and manual runs.
 
 ## Features
 
 - Supports both `pull_request` and `push` events
+- Supports `schedule` and `workflow_dispatch` events (returns all matching files)
 - Optional filtering by file pattern
 - Returns files as JSON array for easy consumption
 - Filters out deleted files (only returns added, modified, or renamed files)
@@ -53,12 +54,26 @@ A reusable composite action that retrieves the list of files changed in a pull r
     event-types: 'pull_request,push'
 ```
 
+### Support Scheduled and Manual Runs
+
+For `schedule` and `workflow_dispatch` events there is no diff to compare, so
+the action returns **all** repository files that match the filter.
+
+```yaml
+- name: Get all matching files (schedule/dispatch)
+  id: all-files
+  uses: "./.github/actions/infrastructure/get-changed-files"
+  with:
+    filter: '*.md'
+    event-types: 'pull_request,push,schedule,workflow_dispatch'
+```
+
 ## Inputs
 
 | Name | Description | Required | Default |
 |------|-------------|----------|---------|
 | `filter` | Optional filter pattern (e.g., `*.md` for markdown files, `.github/` for GitHub files) | No | `''` |
-| `event-types` | Comma-separated list of event types to support (`pull_request`, `push`) | No | `pull_request` |
+| `event-types` | Comma-separated list of event types to support (`pull_request`, `push`, `schedule`, `workflow_dispatch`) | No | `pull_request` |
 
 ## Outputs
 

@@ -1,12 +1,12 @@
 name: 'Get Changed Files'
-description: 'Gets the list of files changed in a pull request or push event'
+description: 'Gets changed files for PR/push events, or all matching files for schedule/dispatch events'
 inputs:
   filter:
     description: 'Optional filter pattern (e.g., "*.md" for markdown files, ".github/" for GitHub files)'
     required: false
     default: ''
   event-types:
-    description: 'Comma-separated list of event types to support (pull_request, push)'
+    description: 'Comma-separated list of event types to support (pull_request, push, schedule, workflow_dispatch)'
     required: false
     default: 'pull_request'
 outputs:
@@ -72,6 +72,28 @@ runs:
               .filter(file => file.status === 'added' || file.status === 'modified' || file.status === 'renamed')
               .map(file => file.filename);
 
+          } else if (
+            (eventTypes.includes('schedule') && context.eventName === 'schedule') ||
+            (eventTypes.includes('workflow_dispatch') && context.eventName === 'workflow_dispatch')
+          ) {
+            const label = context.eventName === 'schedule' ? 'Scheduled' : 'Manual';
+            console.log(`${label} run: scanning all matching files in repository`);
+
+            const { data: tree } = await github.rest.git.getTree({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              tree_sha: context.sha,
+              recursive: 'true',
+            });
+
+            if (tree.truncated) {
+              core.warning('Repository tree was truncated by the GitHub API. Some files may be missing from the scan.');
+            }
+
+            changedFiles = tree.tree
+              .filter(item => item.type === 'blob')
+              .map(item => item.path);
+
           } else {
             core.setFailed(`Unsupported event type: ${context.eventName}. Supported types: ${eventTypes.join(', ')}`);
             return;

@@ -34,7 +34,7 @@ runs:
       uses: "./.github/actions/infrastructure/get-changed-files"
       with:
         filter: '*.md'
-        event-types: 'pull_request,push'
+        event-types: 'pull_request,push,schedule,workflow_dispatch'
 
     - name: Verify markdown links
       id: verify