set_version.yml

name: "Write version number and tag"

on:
  workflow_dispatch:
    inputs:
      ref:
        description: "Target branch"
        required: true
        type: string
      version:
        description: "New version number"
        required: true
        type: string

jobs:
  set-version:
    runs-on: ubuntu-latest

    steps:
      - name: Validate and normalise version number
        shell: python
        run : |
          import os
          from packaging.version import Version

          version_number = str(Version("${{ inputs.version }}"))
          version_string = 'v' + version_number

          print(f"Normalised version string: {version_string}")

          with open(os.environ["GITHUB_ENV"], "a") as github_env:
              print(f"VERSION_NUMBER={version_number}", file=github_env)
              print(f"VERSION_STRING={version_string}", file=github_env)

      - uses: actions/checkout@v4
        with:
          ref: ${{ inputs.ref }}
          fetch-tags: true
          fetch-depth: 0

      - name: "Update version.py"
        shell: bash -l {0}
        run: |
          echo "__version__ = \"${VERSION_STRING}\"" > euphonic/version.py
          cat euphonic/version.py

      - name: "Update CITATION.cff"
        shell: bash -l {0}
        run: |
          sed -i "s/^version:\ .*/version: ${VERSION_NUMBER}/" CITATION.cff
          sed -i "s/^date-released:\ .*/date-released: $(date -I)/" CITATION.cff

      - name: "Create commit"
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git add euphonic/version.py CITATION.cff

          if git diff --cached --quiet
          then
            echo "No files were changed, skipping commit"
          else
            git commit -m "Set version number"          
          fi

      - name: "Tag commit"
        shell: bash -l {0}
        run: |
          if test $(git describe --tags --exact-match) = $VERSION_STRING
          then
            echo "The correct tag is already on this commit"
          else
            git tag $VERSION_STRING
          fi

      - name: "Show updated log"
        run: |
          git log --pretty=oneline --abbrev-commit --decorate | head -n 5
          git diff HEAD^

      - name: "Push commit to branch"
        shell: bash -l {0}
        run: |
          # Verify that ref is a branch (as opposed to a tag or hash)
          git show-ref --verify "refs/heads/${{ inputs.ref }}"

          git push origin ${{ inputs.ref }}
          git push origin tag $VERSION_STRING