ci: send slack message to channel after deploy (#7889)

.github/workflows/deploy.yml

@@ -21,6 +21,47 @@ permissions:
   packages: 'write'
 
 jobs:
+  output-prev-version:
+    name: Output previous version
+    runs-on: ubuntu-latest
+    environment: ${{ github.event.inputs.flavor }}
+    outputs:
+      prev: ${{ steps.print.outputs.version }}
+      namespace: ${{ steps.print.outputs.namespace }}
+    steps:
+      - uses: actions/checkout@v4
+      - name: Auth to Cluster
+        uses: './.github/actions/cluster-auth'
+        with:
+          gcp-project-number: ${{ secrets.GCP_PROJECT_NUMBER }}
+          gcp-project-id: ${{ secrets.GCP_PROJECT_ID }}
+          service-account: ${{ secrets.GCP_HELM_DEPLOY_SERVICE_ACCOUNT }}
+          cluster-name: ${{ secrets.GCP_CLUSTER_NAME }}
+          cluster-location: ${{ secrets.GCP_CLUSTER_LOCATION }}
+      - name: Output previous version
+        id: print
+        run: |
+          namespace=""
+          if [ "${{ github.event.inputs.flavor }}" = "canary" ]; then
+            namespace="dev"
+          elif [ "${{ github.event.inputs.flavor }}" = "beta" ]; then
+            namespace="beta"
+          elif [ "${{ github.event.inputs.flavor }}" = "stable" ]; then
+            namespace="production"
+          else
+            echo "Invalid flavor: ${{ github.event.inputs.flavor }}"
+            exit 1
+          fi
+
+          echo "Namespace set to: $namespace"
+
+          # Get the previous version from the deployment
+          prev_version=$(kubectl get deployment -n $namespace affine-graphql -o=jsonpath='{.spec.template.spec.containers[0].image}' | awk -F '-' '{print $3}')
+
+          echo "Previous version: $prev_version"
+          echo "version=$prev_version" >> $GITHUB_OUTPUT
+          echo "namesapce=$namespace" >> $GITHUB_OUTPUT
+
   build-server-image:
     name: Build Server Image
     uses: ./.github/workflows/build-server-image.yml
@@ -193,3 +234,95 @@ jobs:
           STRIPE_API_KEY: ${{ secrets.STRIPE_API_KEY }}
           STRIPE_WEBHOOK_KEY: ${{ secrets.STRIPE_WEBHOOK_KEY }}
           STATIC_IP_NAME: ${{ secrets.STATIC_IP_NAME }}
+
+  deploy-done:
+    needs:
+      - output-prev-version
+      - build-frontend-image
+      - build-server-image
+      - deploy
+    if: always()
+    runs-on: ubuntu-latest
+    name: Post deploy message
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: actions/checkout@v4
+        with:
+          repository: toeverything/blocksuite
+          path: blocksuite
+          fetch-depth: 0
+          fetch-tags: true
+      - name: Setup Node.js
+        uses: ./.github/actions/setup-node
+        with:
+          extra-flags: 'workspaces focus @affine/changelog'
+          electron-install: false
+      - name: Output deployed info
+        if: ${{ always() && !contains(needs.*.result, 'failure') && !contains(needs.*.result, 'cancelled') }}
+        id: set_info
+        run: |
+          if [ "${{ github.event.inputs.flavor }}" = "canary" ]; then
+            echo "deployed_url=https://affine.fail" >> $GITHUB_OUTPUT
+          elif [ "${{ github.event.inputs.flavor }}" = "beta" ]; then
+            echo "deployed_url=https://insider.affine.pro" >> $GITHUB_OUTPUT
+          elif [ "${{ github.event.inputs.flavor }}" = "stable" ]; then
+            echo "deployed_url=https://app.affine.pro" >> $GITHUB_OUTPUT
+          else
+            exit 1
+          fi
+        env:
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
+      - name: Post Success event to a Slack channel
+        if: ${{ always() && !contains(needs.*.result, 'failure') && !contains(needs.*.result, 'cancelled') }}
+        run: node ./tools/changelog/index.js
+        env:
+          CHANNEL_ID: ${{ secrets.RELEASE_SLACK_CHNNEL_ID }}
+          SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}
+          DEPLOYED_URL: ${{ steps.set_info.outputs.deployed_url }}
+          PREV_VERSION: ${{ needs.output-prev-version.outputs.prev }}
+          NAMESPACE: ${{ needs.output-prev-version.outputs.namespace }}
+          DEPLOYMENT: 'SERVER'
+          FLAVOR: ${{ github.event.inputs.flavor }}
+          BLOCKSUITE_REPO_PATH: ${{ github.workspace }}/blocksuite
+      - name: Post Failed event to a Slack channel
+        id: failed-slack
+        uses: slackapi/slack-github-action@v1.26.0
+        if: ${{ always() && contains(needs.*.result, 'failure') }}
+        with:
+          channel-id: ${{ secrets.RELEASE_SLACK_CHNNEL_ID }}
+          payload: |
+            {
+              "blocks": [
+                {
+                  "type": "section",
+                  "text": {
+                    "text": "<${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}|Backend deploy failed `${{ github.event.inputs.flavor }}`>",
+                    "type": "mrkdwn"
+                  }
+                }
+              ]
+            }
+        env:
+          SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}
+      - name: Post Cancel event to a Slack channel
+        id: cancel-slack
+        uses: slackapi/slack-github-action@v1.26.0
+        if: ${{ always() && contains(needs.*.result, 'cancelled') && !contains(needs.*.result, 'failure') }}
+        with:
+          channel-id: ${{ secrets.RELEASE_SLACK_CHNNEL_ID }}
+          payload: |
+            {
+              "blocks": [
+                {
+                  "type": "section",
+                  "text": {
+                    "text": "<${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}|Backend deploy cancelled `${{ github.event.inputs.flavor }}`>",
+                    "type": "mrkdwn"
+                  }
+                }
+              ]
+            }
+        env:
+          SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}