release-post.yml

name: Post Release

on:
  pull_request:
    types: [closed]
    branches: [develop]
  workflow_dispatch:
    inputs:
      release_ref:
        description: 'Git ref (branch or commit SHA) to sync to master, e.g. release-0.56.0'
        required: true
        type: string

jobs:
  post-release:
    # Only run when a release-* branch is merged into develop, or manually triggered
    if: github.event_name == 'workflow_dispatch' || (github.event.pull_request.merged == true && startsWith(github.event.pull_request.head.ref, 'release-'))
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write

    steps:
      - name: Generate App token
        id: app-token
        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
        with:
          app-id: ${{ secrets.VECTORDOTDEV_BOT_APP_ID }}
          private-key: ${{ secrets.VECTORDOTDEV_BOT_PRIVATE_KEY }}

      - name: Checkout
        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
        with:
          ref: ${{ github.event_name == 'workflow_dispatch' && inputs.release_ref || 'develop' }}
          fetch-depth: 0
          token: ${{ steps.app-token.outputs.token }}

      - name: Configure Git
        run: |
          git config user.name "vectordotdev-bot[bot]"
          git config user.email "${{ steps.app-token.outputs.app-slug }}[bot]@users.noreply.github.com"

      - name: Install helm-docs
        uses: envoy/install-helm-docs@05313083ef2cfaea27c4c3d7cb725242d22ea88b # v1.0.0
        with:
          version: 1.11.0

      - name: Merge develop into master
        run: |
          CHART_VERSION=$(grep '^version:' charts/vector/Chart.yaml | sed 's/version: "\(.*\)"/\1/')
          SYNC_BRANCH="release-sync/${CHART_VERSION}"
          git checkout -b "$SYNC_BRANCH"
          git push origin "$SYNC_BRANCH"
          PR_URL=$(gh pr create \
            --title "chore(releasing): Merge develop into master for ${CHART_VERSION}" \
            --body "Post release: sync master with the release changes from develop for ${CHART_VERSION}." \
            --base master \
            --head "$SYNC_BRANCH")
          gh pr merge "$PR_URL" --auto --merge
        env:
          GH_TOKEN: ${{ steps.app-token.outputs.token }}

      - name: Read and bump chart version
        id: version
        run: |
          CHART_VERSION=$(grep '^version:' charts/vector/Chart.yaml | sed 's/version: "\(.*\)"/\1/')
          MAJOR=$(echo "$CHART_VERSION" | cut -d. -f1)
          MINOR=$(echo "$CHART_VERSION" | cut -d. -f2)
          NEW_VERSION="${MAJOR}.$((MINOR + 1)).0"
          echo "current=$CHART_VERSION" >> "$GITHUB_OUTPUT"
          echo "next=$NEW_VERSION" >> "$GITHUB_OUTPUT"

      - name: Create version bump branch
        run: |
          git switch develop
          git checkout -b "bump-chart-version-${{ steps.version.outputs.next }}"

      - name: Bump chart version
        run: |
          sed -i 's/version: "${{ steps.version.outputs.current }}"/version: "${{ steps.version.outputs.next }}"/' \
            charts/vector/Chart.yaml

      - name: Update Helm docs
        run: helm-docs

      - name: Commit and push
        run: |
          git add .
          git commit -m "chore(releasing): Bump chart version to ${{ steps.version.outputs.next }}"
          git push -u origin "bump-chart-version-${{ steps.version.outputs.next }}"

      - name: Create and auto-merge PR
        run: |
          gh pr create \
            --title "chore(releasing): Bump chart version to ${{ steps.version.outputs.next }}" \
            --body "Post release version bump." \
            --base develop \
            --head "bump-chart-version-${{ steps.version.outputs.next }}"
          gh pr merge "bump-chart-version-${{ steps.version.outputs.next }}" --auto --squash
        env:
          GH_TOKEN: ${{ steps.app-token.outputs.token }}