chore: send message to Slack on publish (#106)

Author: alessbell

.github/workflows/release.yml

@@ -64,3 +64,28 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+
+      - name: Send a Slack notification on publish
+        if: steps.changesets.outcome == 'success' && steps.changesets.outputs.published == 'true'
+        id: slack
+        uses: slackapi/[email protected]
+        with:
+          # Slack channel id, channel name, or user id to post message
+          # See also: https://api.slack.com/methods/chat.postMessage#channels
+          # You can pass in multiple channels to post to by providing
+          # a comma-delimited list of channel IDs
+          channel-id: "C07K7QQ93FW"
+          payload: |
+            {
+              "blocks": [
+                {
+                  "type": "section",
+                  "text": {
+                    "type": "mrkdwn",
+                    "text": "A new version of `@apollo/graphql-testing-library` was released: <https://github.com/apollographql/graphql-testing-library/releases/tag/v${{ fromJson(steps.changesets.outputs.publishedPackages)[0].version }}|v${{ fromJson(steps.changesets.outputs.publishedPackages)[0].version }}> :rocket:"
+                  }
+                }
+              ]
+            }
+        env:
+          SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}