publish_release.yml

---

name: "Publish new release"

on:
  workflow_dispatch:
  push:
    tags:
      - v[0-9]+.*
  pull_request:
    branches:
      - master
    types:
      - closed

jobs:
  packaging:
    name: Build wheels on ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    if: >
      startsWith(github.ref, 'refs/tags/')
      || (github.event_name == 'pull_request'
          && github.event.pull_request.merged == true)
      || github.event_name == 'workflow_dispatch'

    strategy:
      matrix:
        cibw_archs: ["auto64"]
        os: [ubuntu-latest, windows-latest, macos-latest]
        # include:
        #   - os: ubuntu-18.04
        #     cibw_archs: "aarch64"
    steps:
      - name: Set up QEMU
        if: matrix.cibw_archs == 'aarch64'
        uses: docker/setup-qemu-action@v3
        with:
          platforms: arm64

      - uses: actions/checkout@v3
        if: github.event_name != 'workflow_dispatch'

      - uses: actions/checkout@v3
        if: github.event_name == 'workflow_dispatch'
        with:
          ref: 'master'

      - name: Get history and tags for SCM versioning to work
        if: ${{ !env.ACT }}
        run: |
          git fetch --prune --unshallow
          git fetch --depth=1 origin +refs/tags/*:refs/tags/*

      # ========================================================================

      - name: Extract version from branch name (for release branches) (Unix)
        if: >
          github.event_name == 'pull_request'
          && startsWith(github.event.pull_request.head.ref, 'release/')
          && runner.os != 'Windows'
        run: |
          TAG_NAME="${GITHUB_REF/refs\/tags\//}"
          VERSION=${TAG_NAME#v}
          echo "RELEASE_VERSION=$VERSION" >> $GITHUB_ENV

      - name: Extract version from branch name (for hotfix branches) (Unix)
        if: >
          github.event_name == 'pull_request'
          && startsWith(github.event.pull_request.head.ref, 'hotfix/')
          && runner.os != 'Windows'
        run: |
          BRANCH_NAME="${{ github.event.pull_request.head.ref }}"
          VERSION=${BRANCH_NAME#release/v}
          echo "RELEASE_VERSION=$VERSION" >> $GITHUB_ENV

      # ------------------------------------------------------------------------

      - name: Extract version from branch name (for release branches) (Windows)
        if: >
          github.event_name == 'pull_request'
          && startsWith(github.event.pull_request.head.ref, 'release/')
          && runner.os == 'Windows'
        run: |
          $BRANCH_NAME="${{ github.event.pull_request.head.ref }}"
          $VERSION = $BRANCH_NAME -replace "release/v",""
          Write-Output "VERSION = ${VERSION}" >> $Env:GITHUB_ENV

      - name: Extract version from branch name (for hotfix branches) (Windows)
        if: >
          github.event_name == 'pull_request'
          && startsWith(github.event.pull_request.head.ref, 'hotfix/')
          && runner.os == 'Windows'
        run: |
          $BRANCH_NAME="${{ github.event.pull_request.head.ref }}"
          $VERSION = $BRANCH_NAME -replace "hotfix/",""
          Write-Output "VERSION = ${VERSION}" >> $Env:GITHUB_ENV

      # ========================================================================

      - uses: actions/setup-python@v4
        with:
          python-version: '3.x'

      - name: Install Python packages
        run: python -m pip install -U --prefer-binary pip setuptools build wheel twine 'cibuildwheel<3,>=2'

      - name: Build source distribution (Linux)
        if: runner.os == 'Linux'
        id: src-dist
        run: |
          python -m build --sdist
          python -m twine check dist/*

      - name: Build binary wheels
        continue-on-error: true
        id: binary-dist
        run: |
          python -m cibuildwheel --output-dir binary_dist
          python -m twine check binary_dist/*
        env:
          CIBW_ARCHS: ${{ matrix.cibw_archs }}

      - name: Build binary wheels without (failing) testing
        if: steps.binary-dist.outcome == 'failure'
        id: failed-dist
        run: |
          python -m cibuildwheel --output-dir failed_dist
        env:
          CIBW_ARCHS: ${{ matrix.cibw_archs }}
          CIBW_TEST_SKIP: '*'

      - name: Files for Pypi upload
        uses: actions/upload-artifact@v3
        if: steps.src-dist.outcome == 'success'
        with:
          name: pypy_wheels
          path: ./dist

      - name: Binary wheels
        uses: actions/upload-artifact@v3
        if: steps.binary-dist.outcome == 'success'
        with:
          name: wheels
          path: ./binary_dist

      - name: Binary wheels that failed tests
        uses: actions/upload-artifact@v3
        if: steps.failed-dist.outcome == 'success'
        with:
          name: failed_wheels
          path: ./failed_dist


  release:
    name: Publish new release
    runs-on: ubuntu-latest
    needs:
      - packaging
    steps:
      - name: Extract version from tag name (workflow_dispatch)
        if: github.event_name == 'workflow_dispatch'
        run: |
          TAG_NAME=$(git describe --tags `git rev-list --tags --max-count=1`)
          VERSION=${TAG_NAME#v}

          echo "RELEASE_VERSION=$VERSION" >> $GITHUB_ENV

      - name: Extract version from tag name
        if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/')
        run: |
          TAG_NAME="${GITHUB_REF/refs\/tags\//}"
          VERSION=${TAG_NAME#v}

          echo "RELEASE_VERSION=$VERSION" >> $GITHUB_ENV

      - name: Extract version from branch name (for release branches)
        if: github.event_name == 'pull_request' && startsWith(github.event.pull_request.head.ref, 'release/')
        run: |
          BRANCH_NAME="${{ github.event.pull_request.head.ref }}"
          VERSION=${BRANCH_NAME#release/v}

          echo "RELEASE_VERSION=$VERSION" >> $GITHUB_ENV

      - name: Extract version from branch name (for hotfix branches)
        if: github.event_name == 'pull_request'  && startsWith(github.event.pull_request.head.ref, 'hotfix/')
        run: |
          BRANCH_NAME="${{ github.event.pull_request.head.ref }}"
          VERSION=${BRANCH_NAME#hotfix/v}

          echo "RELEASE_VERSION=$VERSION" >> $GITHUB_ENV

      # ------------------------------------------------------------------------
      # Checkout repository to get CHANGELOG

      - uses: actions/checkout@v3
        if: github.event_name != 'workflow_dispatch'

      - uses: actions/checkout@v3
        if: github.event_name == 'workflow_dispatch'
        with:
          ref: 'master'

      # ------------------------------------------------------------------------

      - uses: actions/download-artifact@v3

      # Code below inspired from this action:
      # - uses: taiki-e/create-gh-release-action@v1
      #   with:
      #     title: ProjectQ $tag
      #     changelog: CHANGELOG.md
      #   env:
      #     GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Create release
        env:
          target: x86_64-unknown-linux-musl
          source_url: https://github.com/taiki-e/parse-changelog/releases/download
          parse_changelog_tag: v0.5.1
          changelog: CHANGELOG.md
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          # https://github.com/taiki-e/parse-changelog
          curl -LsSf "${source_url}/${parse_changelog_tag}/parse-changelog-${target}.tar.gz" | tar xzf -
          notes=$(./parse-changelog "${changelog}" "${RELEASE_VERSION}")
          rm -f ./parse-changelog

          if [[ "${tag}" =~ ^v?[0-9\.]+-[a-zA-Z_0-9\.-]+(\+[a-zA-Z_0-9\.-]+)?$ ]]; then
            prerelease="--prerelease"
          fi

          mkdir -p wheels pypy_wheels
          gh release create "v${RELEASE_VERSION}" ${prerelease:-} \
            --title "ProjectQ v${RELEASE_VERSION}" \
            --notes "${notes:-}" \
            pypy_wheels/* wheels/*


  upload_to_pypi:
    name: Upload to PyPI
    runs-on: ubuntu-latest
    needs: release
    steps:
      - uses: actions/setup-python@v4
        with:
          python-version: '3.x'

      - uses: actions/download-artifact@v3

      - name: Publish standard package
        uses: pypa/gh-action-pypi-publish@release/v1
        with:
          user: __token__
          password: ${{ secrets.pypi_password }}
          packages_dir: pypy_wheels/

  master_to_develop_pr:
    name: Merge master back into develop
    runs-on: ubuntu-latest
    needs:
      - release
      - upload_to_pypi
    steps:
      - name: Merge master into develop branch
        uses: thomaseizinger/create-pull-request@1.3.1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          head: master
          base: develop
          title: Merge master into develop branch
          # yamllint disable rule:line-length
          body: |
            This PR merges the master branch back into develop.
            This happens to ensure that the updates that happend on the release branch, i.e. CHANGELOG and manifest updates are also present on the develop branch.