draft-release.yml

# Adapted from https://github.com/thomaseizinger/github-action-gitflow-release-workflow/blob/dev/.github/workflows/draft-new-release.yml

name: "Draft a new release"

on:
  workflow_dispatch:
    inputs:
      version:
        description: 'The version to release'
        required: true

jobs:
  draft-new-release:
    name: "Draft a new release"
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      - name: Create release branch
        run: git checkout -b release/${{ github.event.inputs.version }}

      - name: Update changelog
        uses: thomaseizinger/keep-a-changelog-new-release@1.3.0
        with:
          version: ${{ github.event.inputs.version }}

      - name: Initialize git config
        run: |
          git config user.name "GitHub actions"
          git config user.email noreply@github.com

      - name: Bump project version in gradle.properties
        uses: jacobtomlinson/gha-find-replace@v2
        with:
          find: "version=.*"
          replace: "version=${{ github.event.inputs.version }}"
          include: "gradle.properties"
          regex: true

      - name: Commit changelog and manifest files
        id: make-commit
        run: |
          git add CHANGELOG.md gradle.properties
          git commit --message "Prepare release ${{ github.event.inputs.version }}"
          echo "::set-output name=commit::$(git rev-parse HEAD)"
      - name: Push new branch
        run: git push origin release/${{ github.event.inputs.version }}

      - name: Create pull request
        uses: thomaseizinger/create-pull-request@1.2.2
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          head: release/${{ github.event.inputs.version }}
          base: main
          title: Release version ${{ github.event.inputs.version }}
          reviewers: ${{ github.actor }}

          body: |
            Hi @${{ github.actor }}!
            This PR was created in response to a manual trigger of the release workflow here: https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}.
            The changelog and project version have been updated in this commit: ${{ steps.make-commit.outputs.commit }}.