version.yml

# Copyright 2021 Agnostiq Inc.
#
# This file is part of Covalent.
#
# Licensed under the Apache License 2.0 (the "License"). A copy of the
# License may be obtained with this software package or at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Use of this file is prohibited except in compliance with the License.
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

name: version

on: pull_request

jobs:
  version:
    runs-on: ubuntu-latest
    steps:
      - name: Check out head
        uses: actions/checkout@v1
        with:
          fetch-depth: 0
      - name: Check git history
        run: |
          if git merge-base --is-ancestor $GITHUB_SHA origin/develop; then
            echo "DEVELOP_COMMIT_HISTORY=$GITHUB_SHA" >> $GITHUB_ENV
          fi
      - name: Check for version change
        id: changed-version-file
        uses: tj-actions/changed-files@v18.4
        with:
          files: |
            VERSION
      - name: Fail if version changed
        if: ${{ steps.changed-version-file.outputs.any_changed == 'true' && github.sha != env.DEVELOP_COMMIT_HISTORY }}
        run: |
          echo "Version changes are prohibited in pull requests."
          exit 10
      - name: Read head version
        if: ${{ github.sha != env.DEVELOP_COMMIT_HISTORY }}
        run: |
          HEAD_VERSION="$(cat ./VERSION)"
          echo "HEAD_VERSION=$HEAD_VERSION" >> $GITHUB_ENV
      - name: Validate changelog entry
        if: ${{ github.sha != env.DEVELOP_COMMIT_HISTORY }}
        run: |
          git diff --name-only origin/develop | grep CHANGELOG
          unreleased_header_line=8
          if [[ $(sed "${unreleased_header_line}q;d" CHANGELOG.md) != "## [UNRELEASED]" ]] ; then
            echo 'Removing the [UNRELEASED] header is prohibited in pull requests.'
            exit 4
          fi
          latest_release=$(sed -n "/\[[0-9]\+\.[0-9]\+\.[0-9]\+\]/=" CHANGELOG.md | head -n 1)
          IFS='[]' read -ra changelog_version <<< $(sed "${latest_release}q;d" CHANGELOG.md)
          if [[ "${changelog_version[1]}" != $HEAD_VERSION ]] ; then
            echo 'The most recent CHANGELOG release does not match the VERSION'.
            exit 3
          fi
          #Check that the lines in the diff are between unreleased_header_line and latest_release
          IFS='@-+,' read -ra LINES <<< "$(git diff develop -- CHANGELOG.md | sed '5q;d')"
          start_head="$(( LINES[5] + 3 ))"
          lines_head="$(( LINES[6] - 6 ))"
          if [[ $start_head -lt $unreleased_header_line ]] ||
             [[ $((start_head + lines_head)) -gt $latest_release ]] ; then
            echo 'Changes outside the UNRELEASED block are prohibited in pull requests.'
            exit 6
          fi