translate to pwsh

.github/workflows/guarantee-release-notes.yml

@@ -1,38 +1,41 @@
-name: Guarantee release notes are provided
+name: Check release_notes.md is updated
 
 on:
   workflow_dispatch:
   push:
     branches: [ main, dev, dajusto/validate-release-notes-are-provided ]
     paths:
       - '*'
+
   pull_request:
     branches: [ main, dev, dajusto/validate-release-notes-are-provided ]
-    types: [labeled, unlabeled, synchronize]
+    types: [labeled, unlabeled, synchronize] # Trigger on PR labeling events, or a PR push (synchronize)
     paths:
       - '.github/workflows/guarantee-release-notes.yml'
 
 jobs:
   build:
     runs-on: ubuntu-latest
-    if: ${{ !contains(github.event.pull_request.labels.*.name, 'does-not-need-release-note') }}
+    # Skip all validation if label 'no-release-notes' is applied to the PR
+    if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-release-notes') }}
     steps:
     - uses: actions/checkout@v2
 
-    - name: Check for release_notes.md changes
+    - name: Check `release_notes.md`
       id: check_changes
+      shell: pwsh
       run: |
-        echo "Checking for changes in release_notes.md..."
-        if git diff --name-only ${{ github.event.before }} ${{ github.sha }} | grep -q 'release_notes.md'; then
-          echo "release_notes.md was modified. "
-          echo "MODIFIED=true" >> $GITHUB_ENV
-        else
-          echo "release_notes.md was NOT modified."
-          echo "MODIFIED=false" >> $GITHUB_ENV
-        fi
-    - name: Fail if release_notes.md was not modified
-      if: env.MODIFIED == 'false'
-      run: |
-        echo {{github.event.pull_request.labels.*.name.*.name}}
-        echo "Error: release_notes.md must be updated in this PR."
-        exit 1
+        Write-Host "Checking for changes in release_notes.md..."
+        $changedFiles = git diff --name-only ${{ github.event.before }} ${{ github.sha }}
+
+        # If `release_notes.md` was modified, the PR passes the validation.
+        # If it's not modified, fail and instruct author on what to do (either modify it or add 'no-release-notes' label)
+        if ($changedFiles -match "release_notes.md") {
+          Write-Host "release_notes.md was modified. Pass!"
+        } else {
+          $errorMessage = "This PR does not update `release_notes.md`. If the PR should be included " +
+            "in the next release's release notes, please update this file. If the PR should not be included, " +
+            "then please add the label `no-release-notes` to the PR."
+          Write-Error #errorMessage
+          exit 1 # Fail the GH action
+        }