Update 0-welcome.yml

reverted to original

Author: coco-bits

.github/workflows/0-welcome.yml

@@ -1,10 +1,91 @@
-name: Post welcome comment
+name: Step 0, Welcome
+
+# This step triggers after the learner creates a new repository from the template.
+# This workflow updates from step 0 to step 1.
+
+# This will run every time we create push a commit to `main`.
+# Reference: https://docs.github.com/en/actions/learn-github-actions/events-that-trigger-workflows
 on:
-  pull_request:
-    types: [opened]
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+
+# Reference: https://docs.github.com/en/actions/security-guides/automatic-token-authentication
 permissions:
-  pull-requests: write
+  # Need `contents: read` to checkout the repository.
+  # Need `contents: write` to update the step metadata.
+  contents: write
+
 jobs:
-  build:
-    name: Post welcome comment
+  # Get the current step to only run the main job when the learner is on the same step.
+  get_current_step:
+    name: Check current step number
     runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - id: get_step
+        run: |
+          echo "current_step=$(cat ./.github/steps/-step.txt)" >> $GITHUB_OUTPUT
+    outputs:
+      current_step: ${{ steps.get_step.outputs.current_step }}
+
+  on_start:
+    name: On start
+    needs: get_current_step
+
+    # We will only run this action when:
+    # 1. This repository isn't the template repository.
+    # 2. The step is currently 0.
+    # Reference: https://docs.github.com/en/actions/learn-github-actions/contexts
+    # Reference: https://docs.github.com/en/actions/learn-github-actions/expressions
+    if: >-
+      ${{ !github.event.repository.is_template
+          && needs.get_current_step.outputs.current_step == 0 }}
+
+    # We'll run Ubuntu for performance instead of Mac or Windows.
+    runs-on: ubuntu-latest
+
+    steps:
+      # We'll need to check out the repository so that we can edit the README.
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0 # Let's get all the branches.
+
+      # Make a branch, file, and commit for the learner.
+      - name: Prepare a branch, and file
+        run: |
+          echo "Make sure we are on step 0"
+          if [ "$(cat .github/steps/-step.txt)" != 0 ]
+          then
+            echo "Current step is not 0"
+            exit 0
+          fi
+
+          echo "Make a branch"
+          BRANCH=welcome-workflow
+          git checkout -b $BRANCH
+
+          echo "Make a commit"
+          git config user.name github-actions[bot]
+          git config user.email github-actions[bot]@users.noreply.github.com
+          git commit --allow-empty --message="Create an empty commit"
+
+          echo "Push"
+          git push --set-upstream origin $BRANCH
+
+          echo "Restore main"
+          git checkout main
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      # In README.md, switch step 0 for step 1.
+      - name: Update to step 1
+        uses: skills/action-update-step@v2
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          from_step: 0
+          to_step: 1
+          branch_name: welcome-workflow