# This workflow runs whenever the release PR is merged. It includes post-release communication processes like
# posting to slack, the website, community forums, etc.
# Only things that happen after a release is completed and all of the necessary code changes (like the changelog) are made.
name: Post-release
on:
  workflow_dispatch:
    inputs:
      dry_run:
        required: false
        default: true
        type: boolean
      version:
        required: true
      latest:
        type: boolean
        default: false
  pull_request:
    types:
    - closed
    branches:
    - 'main'
    - 'release-*.*.*'

permissions: {}

jobs:
  setup:
    permissions:
      contents: read
      id-token: write
    if: ${{ github.event_name == 'workflow_dispatch' || (github.event.pull_request.merged == true && startsWith(github.head_ref, 'release/')) }}
    name: Setup and establish latest
    outputs:
      version: ${{ steps.output.outputs.version }}
      release_branch: ${{ steps.output.outputs.release_branch }}
      dry_run: ${{ steps.output.outputs.dry_run }}
      latest: ${{ steps.output.outputs.latest }}
    env:
      HEAD_REF: ${{ github.head_ref }}
      DRY_RUN: ${{ inputs.dry_run }}
      LATEST: ${{ inputs.latest && '1' || '0' }}
      VERSION: ${{ inputs.version }}
    runs-on: ubuntu-latest
    steps:
    - if: ${{ github.event.pull_request.merged == true && startsWith(github.head_ref, 'release/') }}
      run: |
        {
        echo "VERSION=$(echo "${HEAD_REF}" | sed -e 's/release\/.*\//v/g')"
        echo "DRY_RUN=${{ contains(github.event.pull_request.labels.*.name, 'release/dry-run') }}"
        echo "LATEST=${{ contains(github.event.pull_request.labels.*.name, 'release/latest') && '1' || '0' }}"
        } >> "$GITHUB_ENV"
    - id: output
      run: |
        echo "dry_run: $DRY_RUN"
        echo "latest: $LATEST"
        echo "version: $VERSION"

        {
          echo "release_branch=$(echo "$VERSION" | sed -s 's/^v/release-/g')"
          echo "dry_run=$DRY_RUN"
          echo "latest=$LATEST"
          echo "version=$VERSION"
        } >> "$GITHUB_OUTPUT"
  create_next_release_branch_grafana:
    name: Create next release branch (Grafana)
    needs: setup
    uses: ./.github/workflows/create-next-release-branch.yml
    with:
      ownerRepo: 'grafana/grafana'
      source: ${{ needs.setup.outputs.release_branch }}
  create_next_release_branch_enterprise:
    name: Create next release branch (Grafana Enterprise)
    needs: setup
    uses: ./.github/workflows/create-next-release-branch.yml
    with:
      ownerRepo: 'grafana/grafana-enterprise'
      source: ${{ needs.setup.outputs.release_branch }}
  migrate_prs_grafana:
    needs:
      - setup
      - create_next_release_branch_grafana
    uses: ./.github/workflows/migrate-prs.yml
    with:
      ownerRepo: 'grafana/grafana'
      from: ${{ needs.setup.outputs.release_branch }}
      to: ${{ needs.create_next_release_branch_grafana.outputs.branch }}
  migrate_prs_enterprise:
    needs:
      - setup
      - create_next_release_branch_enterprise
    uses: ./.github/workflows/migrate-prs.yml
    with:
      ownerRepo: 'grafana/grafana-enterprise'
      from: ${{ needs.setup.outputs.release_branch }}
      to: ${{ needs.create_next_release_branch_enterprise.outputs.branch }}
  post_changelog_on_forum:
    needs: setup
    uses: ./.github/workflows/community-release.yml
    with:
      version: ${{ needs.setup.outputs.version }}
      dry_run: ${{ needs.setup.outputs.dry_run == 'true' }}
  create_github_release:
    # a github release requires a git tag
    # The github-release action retrieves the changelog using the /repos/grafana/grafana/contents/CHANGELOG.md API
    # endpoint.
    needs: setup
    uses: ./.github/workflows/github-release.yml
    with:
      version: ${{ needs.setup.outputs.version }}
      dry_run: ${{ needs.setup.outputs.dry_run == 'true' }}
      latest: ${{ needs.setup.outputs.latest }}
  post_on_slack:
    needs: setup
    runs-on: ubuntu-latest
    env:
      DRY_RUN: ${{ needs.setup.outputs.dry_run }}
      VERSION: ${{ needs.setup.outputs.version }}
    steps:
    - run: |
        echo announce on slack that "$VERSION" has been released
        echo dry run: "$DRY_RUN"