name: Prepare release
on:
  workflow_dispatch:
    inputs:
      version:
        description: 'The version to release, e.g. 1.30.0'
        required: true

jobs:
  create-pull-request:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Validate version
        run: |
          version=${{ inputs.version }}
          if [[ ! "$version" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
            echo "unexpected version: $version"
            exit 1
          fi

      - name: Use CLA approved github bot
        run: .github/scripts/use-cla-approved-github-bot.sh

      - name: Update schema files
        run: |
          if ! grep -q "^  next:$" schema-next.yaml; then
            echo "String 'next:' not found in the file"
            exit 1
          fi

          version=${{ inputs.version }}
          sed -i "0,/^schema_url: .*\/next$/s/\/next$/\/$version/" schema-next.yaml
          sed -i "0,/^  next:$/s//  $version:/" schema-next.yaml
          cp schema-next.yaml "schemas/$version"
          git add "schemas/$version"

          sed -i "0,/^  $version:$/s//  next:\n  $version:/" schema-next.yaml

      - name: Update change log
        run: |
          make chlog-update VERSION=v${{ inputs.version }}

      - name: Create pull request
        env:
          # not using secrets.GITHUB_TOKEN since pull requests from that token do not run workflows
          GH_TOKEN: ${{ secrets.OPENTELEMETRYBOT_GITHUB_TOKEN }}
        run: |
          version=${{ inputs.version }}
          message="Prepare release v${version}"
          body="Prepare release \`v${version}\`."
          branch="opentelemetrybot/prepare-release-v${version}"

          git checkout -b $branch
          git commit -a -m "$message"
          git push --set-upstream origin $branch
          gh pr create --title "$message" \
                       --body "$body" \
                       --base main
