Refactor GitHub Actions workflow for changelog updates

.github/workflows/add_PR_2_chlog.yml

@@ -3,7 +3,7 @@ name: Update Changelog After Renovate PR Merge
 on:
   push:
     branches:
-      - v1.78.2-dev   # ← replace with your default branch
+      - v1.78.2-dev   # ← replace with your repo’s default branch
 
   workflow_dispatch:
     inputs:
@@ -24,93 +24,95 @@ jobs:
         id: check-renovate
         shell: bash
         run: |
-          # Always true for manual runs
           if [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
             echo "isRenovate=true" >> $GITHUB_OUTPUT
             exit 0
           fi
 
-          # Inspect the last commit message
-          msg=$(git log -1 --pretty=%B)
+          msg="$(git log -1 --pretty=%B)"
           if echo "$msg" | grep -q 'chore(deps): update dependency'; then
             echo "isRenovate=true" >> $GITHUB_OUTPUT
           else
             echo "isRenovate=false" >> $GITHUB_OUTPUT
           fi
 
-      - name: Skip if not a Renovate PR
+      - name: Abort if not a Renovate PR
         if: steps.check-renovate.outputs.isRenovate == 'false'
         run: |
-          echo "ℹ️ No Renovate dependency update found in the last commit. Skipping changelog update."
-          
+          echo "ℹ️ Last commit is not a Renovate dependency update—skipping."
+
       - name: Parse Renovate PR info
         if: steps.check-renovate.outputs.isRenovate == 'true'
         id: extract
         shell: pwsh
         run: |
-          # Determine dryRun
+          # 1) Determine dryRun
           $dryRun = '${{ github.event.inputs.dryRun }}'
           if (-not $dryRun) { $dryRun = 'false' }
           Write-Host "🔍 dryRun = $dryRun"
 
-          # Grab full commit message
+          # 2) Read full commit message
           $fullMsg = git log -1 --pretty=%B
+          Write-Host "📝 Commit message:"
+          Write-Host $fullMsg
 
-          # Extract PR number (#1234)
-          if ($fullMsg -match '#(\d+)\s*$') {
+          # 3) Extract PR number from merge subject
+          if ($fullMsg -match 'Merge pull request #(\d+)') {
             $prNumber = $matches[1]
           } else {
-            throw "❌ No PR number found in commit message"
+            throw "❌ Could not locate PR number in merge commit"
           }
 
-          # Extract dependency name & version
+          # 4) Extract dependency update from body
           if ($fullMsg -match 'chore\(deps\): update dependency ([\w\.\-]+) to ([\d\.]+)') {
             $depName    = $matches[1]
             $depVersion = $matches[2]
           } else {
-            throw "❌ Could not parse dependency info"
+            throw "❌ Could not parse dependency name/version"
           }
 
-          echo "pr=$prNumber"      >> $env:GITHUB_OUTPUT
-          echo "depName=$depName"   >> $env:GITHUB_OUTPUT
+          # 5) Persist outputs
+          echo "pr=$prNumber"        >> $env:GITHUB_OUTPUT
+          echo "depName=$depName"    >> $env:GITHUB_OUTPUT
           echo "depVersion=$depVersion" >> $env:GITHUB_OUTPUT
-          echo "dryRun=$dryRun"     >> $env:GITHUB_OUTPUT
+          echo "dryRun=$dryRun"      >> $env:GITHUB_OUTPUT
 
       - name: Update CHANGELOG.md
         if: steps.check-renovate.outputs.isRenovate == 'true'
         shell: pwsh
         run: |
-          $path = "$env:GITHUB_WORKSPACE/CHANGELOG.md"
+          $path   = "$env:GITHUB_WORKSPACE/CHANGELOG.md"
           if (-not (Test-Path $path)) { throw "❌ CHANGELOG.md not found" }
 
-          $lines      = Get-Content $path
-          $pr         = '${{ steps.extract.outputs.pr }}'
-          $dep        = '${{ steps.extract.outputs.depName }}'
-          $ver        = '${{ steps.extract.outputs.depVersion }}'
-          $entry      = "- #$pr: update $dep to $ver"
+          $lines  = Get-Content $path
+          $pr     = '${{ steps.extract.outputs.pr }}'
+          $dep    = '${{ steps.extract.outputs.depName }}'
+          $ver    = '${{ steps.extract.outputs.depVersion }}'
+          $entry  = "- #$pr: update $dep to $ver"
 
-          # Locate latest version header: ## [x.y.z]
+          # Find latest version header: ## [x.y.z]
           $vIndex = $lines.FindIndex({ $_ -match '^## \[\d+\.\d+\.\d+\]' })
           if ($vIndex -lt 0) { throw "❌ No version header found" }
 
-          # Find or insert '### Dependency update'
+          # Locate or create '### Dependency update'
           $depIndex = -1
-          for ($i = $vIndex+1; $i -lt $lines.Count; $i++) {
+          for ($i = $vIndex + 1; $i -lt $lines.Count; $i++) {
             if ($lines[$i] -match '^### Dependency update') {
-              $depIndex = $i; break
+              $depIndex = $i
+              break
             }
             if ($lines[$i] -match '^## ') { break }
           }
           if ($depIndex -eq -1) {
-            $lines.Insert($vIndex+1, '### Dependency update')
-            $depIndex = $vIndex+1
+            $lines.Insert($vIndex + 1, '### Dependency update')
+            $depIndex = $vIndex + 1
           }
 
-          # Insert the new line
-          $lines.Insert($depIndex+1, $entry)
+          # Insert the entry
+          $lines.Insert($depIndex + 1, $entry)
           Set-Content -Path $path -Value $lines
 
-          Write-Host "✅ Changelog entry inserted:"
+          Write-Host "✅ Inserted in CHANGELOG.md:"
           Write-Host "   $entry"
 
       - name: Commit & push