start-release-train.yml

name: Start Release Train
on:
  workflow_dispatch:
    inputs:
      version_number:
        description: 'Next version number of the release'
        type: string
        required: true
      release_date:
        description: 'Date of the final release. Will be used for CHANGELOG.md (format YYYY-MM-DD, e.g. 2023-02-27)'
        type: string
        required: true
env:
  LC_ALL: en_US.UTF-8
  LANG: en_US.UTF-8
concurrency:
  group: start-release-train-${{ inputs.version_number }}
  cancel-in-progress: true
jobs:
  create_release_pr:
    name: Create release branch and bump version
    runs-on: macos-latest
    outputs:
      branch_name: ${{ steps.branching.outputs.branch_name }}
    steps:
      - uses: actions/checkout@v4

      - name: Setup Git User
        run: |
          # setup git
          git config --global user.name "Bitmovin Release Automation"
          git config --global user.email "support@bitmovin.com"

      - name: Setup node and npm registry
        uses: actions/setup-node@v3
        with:
          node-version: '16'
          registry-url: 'https://registry.npmjs.org/'
          cache: 'yarn'

      - name: Set Release Branch name
        id: branching
        run: |
          branch_name="release/v${{ inputs.version_number }}"
          echo "branch_name=$branch_name" >> $GITHUB_OUTPUT

      - name: Create Release Branch
        run: |
          # Delete the release branch if already exists, useful in case we need to re-run this workflow
          git push origin --delete ${{ steps.branching.outputs.branch_name }} || true
          git checkout -b ${{ steps.branching.outputs.branch_name }}

      - name: Bump changelog version
        run: |
          sed -i'.bak' "s/\[Unreleased\]/\[${{ inputs.version_number }}\] \(${{ inputs.release_date }}\)/g" CHANGELOG.md

      - name: Bump package.json version
        run: |
          yarn version --new-version ${{ inputs.version_number }} --no-git-tag-version

      - name: Update Podfile.lock
        run: |
          yarn bootstrap

      - name: Commit changelog version bump
        run: |
          git add CHANGELOG.md package.json example/ios/Podfile.lock
          git commit -m "chore: prepare release ${{ inputs.version_number }}"
          git push origin ${{ steps.branching.outputs.branch_name }}

      - name: Create PR
        run: |
          gh pr create \
          --base "main" \
          --title "Release ${{ inputs.version_number }}" \
          --body "Release ${{ inputs.version_number }}"
        env:
          GH_TOKEN: ${{ github.token }}