name: "Nix & Meson: update version"

on: [push, workflow_dispatch]

jobs:
  update:
    runs-on: ubuntu-latest
    steps:
    - name: Clone repository
      uses: actions/checkout@v3
    - name: Update flake and meson version
      run: |
        REGEX="([0-9]+(\.[0-9a-zA-Z]+)+)"

        CRT_REV=$(git show-ref --tags --head --abbrev | head -n 1 | head -c 7)
        TAG_REV=$(git show-ref --tags --abbrev | tail -n 1 | head -c 7)
        CRT_VER=$(sed -nEe "/$REGEX/{p;q;}" meson.build | awk -F\' '{print $2}')
        VERSION=$(git show-ref --tags --abbrev | tail -n 1 | tail -c +20)

        if [[ $TAG_REV = $CRT_REV ]] || [[ $CRT_VER != $VERSION ]]; then
          sed -Ei "s/$REGEX/$VERSION/g" meson.build
          sed -Ei "s/$REGEX/$VERSION/g" flake.nix
        fi
    - uses: stefanzweifel/git-auto-commit-action@v4
      with:
        commit_message: "[gha] bump flake and meson version"