feat(actions): Introduce prepare-release action (#5551)

This action will create the daily next -> prod Novu Cloud release PR and print the commit log in Slack

.cspell.json

@@ -661,7 +661,8 @@
     "unpublish",
     "decompile",
     "servername",
-    "neom"
+    "neom",
+    "automerge"
   ],
   "flagWords": [],
   "patterns": [

.github/workflows/prepare-cloud-release.yaml

@@ -0,0 +1,74 @@
+name: "Prepare Cloud Release"
+
+on:
+  workflow_dispatch:
+  # Triggers the workflow every work day at 8:00 UTC
+  # The 3 hour offset should change when daylight savings change for GMT +3.
+  schedule:
+    - cron: "0 9 * * 1,2,3,4,5"
+
+jobs:
+  prepare-cloud-release:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
+    timeout-minutes: 10
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set output variables
+        id: output-variables
+        run: |
+          echo "date_humanized=$(date +'%Y-%m-%d %H:%M')" >> "$GITHUB_OUTPUT"
+          echo "branch_name=release_$(date +'%Y_%m_%d_%H_%M')" >> "$GITHUB_OUTPUT"
+
+      - name: Create Novu Cloud release branch
+        run: git checkout -b ${{ steps.output-variables.outputs.branch_name }}
+
+      - name: Push release branch
+        run: git push origin ${{ steps.output-variables.outputs.branch_name }}
+
+      - name: Create Novu Cloud release PR
+        id: create-pr
+        run: |
+          echo "pr_url=$(gh pr create --base prod --head ${{steps.output-variables.outputs.branch_name}} --title 'Release ${{steps.output-variables.outputs.date_humanized}}' --body 'Automated daily production Novu Cloud release')" >> "$GITHUB_OUTPUT"
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Enable PR automerge
+        id: enable-pr-automerge
+        run: |
+          gh pr merge --auto -r ${{steps.create-pr.outputs.pr_url}}
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Generate commit log
+        id: commit-log
+        run: |
+          echo 'COMMIT_LOG<<EOF' >> $GITHUB_ENV
+          echo $(git log --format="format:%h %s (@%aL)\n" origin/prod..origin/${{steps.output-variables.outputs.branch_name}} | sed "s/\"/'/g") >> $GITHUB_ENV
+          echo 'EOF' >> $GITHUB_ENV
+
+      - name: Send commit log to Slack
+        id: slack
+        uses: slackapi/[email protected]
+        with:
+          payload: |
+            {
+              "text": "*<${{steps.create-pr.outputs.pr_url}}|Novu Cloud Release: ${{steps.output-variables.outputs.date_humanized }}>*\n```${{env.COMMIT_LOG}}```",
+              "blocks": [
+                {
+                  "type": "section",
+                  "text": {
+                    "type": "mrkdwn",
+                    "text": "*<${{steps.create-pr.outputs.pr_url}}|Novu Cloud Release: ${{steps.output-variables.outputs.date_humanized }}>*\n```${{env.COMMIT_LOG}}```"
+                  }
+                }
+              ]
+            }
+        env:
+          SLACK_WEBHOOK_URL: ${{secrets.SLACK_WEBHOOK_URL_ENG_FEED_DEPLOYMENTS}}