Check for changes in the repository in specific paths

win/check-changes/action.yml

@@ -0,0 +1,50 @@
+name: 'check-changes'
+description: 'Checks for file changes in a specified path.'
+
+inputs:
+  base-commit:
+    description: 'The commit hash to compare against. If not provided, the action will use HEAD^.'
+    default: 'HEAD^'
+  paths:
+    description: 'A comma-separated list of file paths to check for changes. If any of these paths has changed files, the action will return true.'
+    default: ''
+
+outputs:
+  has-changes:
+    description: 'Indicates whether there are changes in the specified paths.'
+    value: ${{ steps.check.outputs.has-changes }}
+
+
+runs:
+  using: 'composite'
+  steps:
+    - name: Check changes
+      id: check
+      shell: powershell
+      run: |
+        $hasChanges = $false
+        $baseCommit = '${{ inputs.base-commit }}'
+
+        if ($baseCommit -eq '0000000000000000000000000000000000000000') {
+          Write-Host "Base commit is zero hash (merge commit or new branch). Define as always has changes."
+          $hasChanges = $true
+        }
+
+        if (-not $hasChanges) {
+          $diff = git diff --name-only $baseCommit HEAD
+          $paths = '${{ inputs.paths }}' -split ',' | ForEach-Object { $_.Trim() }
+
+          $diffChanges = $diff |
+            Where-Object {
+              foreach ($path in $paths) {
+                if ($_.StartsWith($path)) {
+                  return $true
+                }
+              }
+            }
+
+          $hasChanges = $diffChanges.Count -gt 0
+        }
+
+        Write-Output "OUT: has-changes=$($hasChanges)"
+        Write-Output "has-changes=$($hasChanges)" | Add-Content -Path $env:GITHUB_OUTPUT