seperate steps for template comparsion and extract changelog

Signed-off-by: Himani1519 <[email protected]>

.github/workflows/build_test.yml

@@ -45,25 +45,56 @@ jobs:
             echo "ERROR: CHANGELOG.md has not been updated."
             echo "::set-output name=check_commit::false"
           fi
+
+      - name: Compare PR description with template
+        if: steps.check-changelog.outputs.check_commit == 'false'
+        run: |
+         PR_DESCRIPTION="${{ github.event.pull_request.body }}"
+         echo "$PR_DESCRIPTION" > /tmp/pr_description.txt
+         echo "PR DESCRIPTION saved to /tmp/pr_description.txt."
+         cat /tmp/pr_description.txt
+            
+         # Save the template content to a file
+         TEMPLATE_CONTENT=$(sed 's/"//g' .github/pull_request_template.md)
+         echo "$TEMPLATE_CONTENT" > /tmp/template_content.txt
+         echo "Template content saved to /tmp/template_content.txt."
+         cat /tmp/template_content.txt
+            
+         # Use diff to compare the two files
+         if diff -wB /tmp/pr_description.txt /tmp/template_content.txt > /dev/null; then
+           echo "ERROR: PR description is identical to the template."
+           exit 1
+         else
+           echo "PR description and template are different."
+         fi
+
       - name: Extract changelog info
         if: steps.check-changelog.outputs.check_commit == 'false'
         id: extract-changelog
         run: |
-          PR_DESCRIPTION="${{ github.event.pull_request.body }}"
+          PR_DESCRIPTION=$(cat /tmp/pr_description.txt)
           # Check if "changelog:" exists in PR description
           if echo "$PR_DESCRIPTION" | grep -q "VERSION:" && echo "$PR_DESCRIPTION" | grep -q "CHANGELOG:"; then
-            # Extract text after "changelog:"
+            # Extract content after "changelog:"
             CHANGELOG_TEXT=$(echo $PR_DESCRIPTION | sed -n 's/.*CHANGELOG: \(.*\)/\1/p')
+            
+            # Check if extracted CHANGELOG_TEXT is empty or identical to the template content
+            TEMPLATE_CONTENT=$(cat /tmp/template_content.txt)
+            if [ -z "$CHANGELOG_TEXT" ] || [ "$CHANGELOG_TEXT" == "$TEMPLATE_CONTENT" ]; then
+              echo "The changelog information after 'CHANGELOG:' cannot be empty or identical to pull_request_template.md."
+              exit 1
+            fi
+      
             # Extract VERSION: from PR description
             VERSION=$(echo "$PR_DESCRIPTION" | grep -oP 'VERSION:\s*\K\d+\.\d+\.\d+')
             echo "Extracted changelog: $CHANGELOG_TEXT"
             echo "::set-output name=changelog::$CHANGELOG_TEXT"
             echo "::set-output name=version::$VERSION"
           else
-            echo -e "No changelog and version information found in PR description please add them.\n Expected Format:\n VERSION:X.XX.X\n CHANGELOG:This is changelog note.\n
-            To re-run the action, just make a push or commit after updating the PR description or updating the changelog via a manual file changing commit."
+            echo -e "No changelog and version information found in PR description. Please add them.\nExpected Format:\nVERSION:vX.XX.X\nCHANGELOG:This is changelog note.\nTo re-run the action, just make a push or commit after updating the PR description or updating the changelog via a manual file changing commit."
             exit 1
           fi
+
       - name: Check PR body against changelog
         if: steps.check-changelog.outputs.check_commit == 'false'
         run: |