Improve slack test notifications

.github/workflows/e2e-test.yml

@@ -173,6 +173,8 @@ jobs:
     runs-on: ubuntu-latest
     needs: [integration-tests]
     if: always() && github.repository == 'linode/linode_api4-python' # Run even if integration tests fail and only on main repository
+    outputs:
+      summary: ${{ steps.set-test-summary.outputs.summary }}
 
     steps:
       - name: Checkout code
@@ -197,7 +199,6 @@ jobs:
       - name: Set release version env
         run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
 
-
       - name: Add variables and upload test results
         if: always()
         run: |
@@ -213,12 +214,24 @@ jobs:
           LINODE_CLI_OBJ_ACCESS_KEY: ${{ secrets.LINODE_CLI_OBJ_ACCESS_KEY }}
           LINODE_CLI_OBJ_SECRET_KEY: ${{ secrets.LINODE_CLI_OBJ_SECRET_KEY }}
 
+      - name: Generate test summary and save to output
+        id: set-test-summary
+        run: |
+          filename=$(ls | grep -E '^[0-9]{12}_sdk_test_report\.xml$') 
+          test_output=$(python3 e2e_scripts/tod_scripts/generate_test_summary.py "${filename}")
+          {
+            echo 'summary<<EOF'
+            echo "$test_output"
+            echo EOF
+          } >> "$GITHUB_OUTPUT"
+
   notify-slack:
     runs-on: ubuntu-latest
-    needs: [integration-tests]
+    needs: [integration-tests, process-upload-report]
     if: ${{ (success() || failure()) }} # Run even if integration tests fail and only on main repository
     steps:
       - name: Notify Slack
+        id: main_message
         uses: slackapi/slack-github-action@v2.0.0
         with:
           method: chat.postMessage
@@ -229,7 +242,7 @@ jobs:
               - type: section
                 text:
                   type: mrkdwn
-                  text: ":rocket: *${{ github.workflow }} Completed in: ${{ github.repository }}* :white_check_mark:"
+                  text: ":rocket: *${{ github.workflow }} Completed in: ${{ github.repository }}* ${{ needs.integration-tests.result == 'success' && ':white_check_mark:' || ':failed:' }}"
               - type: divider
               - type: section
                 fields:
@@ -247,4 +260,15 @@ jobs:
               - type: context
                 elements:
                   - type: mrkdwn
-                    text: "Triggered by: :bust_in_silhouette: `${{ github.actor }}`"
+                    text: "Triggered by: :bust_in_silhouette: `${{ github.actor }}`"
+
+      - name: Test summary thread
+        if: success()
+        uses: slackapi/slack-github-action@v2.0.0
+        with:
+          method: chat.postMessage
+          token: ${{ secrets.SLACK_BOT_TOKEN }}
+          payload: |
+            channel: ${{ secrets.SLACK_CHANNEL_ID }}
+            thread_ts: "${{ steps.main_message.outputs.ts }}"
+            text: "${{ needs.process-upload-report.outputs.summary }}"