handle-versioning-accross-branches.yml

name: Handle versioning accros branches

on:
  push:
    # todo: add file paths of the files with version numbers

jobs:
  extension-versioning:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - uses: git-actions/set-user@v1

      - name: Prevent branch warnings
        run: |
          # config git advice.detachedHead to false
          git config advice.detachedHead false

      - name: Get highest version number accross all branches
        id: get-version
        shell: pwsh
        run: |
          # SemVer code
          function Parse-SemVer ($version) {
          $parts = $version.Split('.')
          return @{
              Major = [int]$parts[0]
              Minor = [int]$parts[1]
              Patch = [int]$parts[2]
              }
          }

          $highestVersion = @{
              Major = 0
              Minor = 0
              Patch = 0
          }

          # loop over all branches
          $highestVersion = 0
          foreach ($branch in $(git branch -r --format='%(refname:short)')) {
            # checkout the branch
            git checkout $branch

            # get the semantic version number from the vss-extension-dev.json file
            $version = Get-Content -Path "vss-extension.json" | ConvertFrom-Json | Select-Object -ExpandProperty version
            Write-Host "Found version: [$version] in branch: [$branch]"

            # check if the version is semantically higher than the highest version using SemVer
            $version = Parse-SemVer $version

            if ($version.Major -gt $highestVersion.Major -or
                ($version.Major -eq $highestVersion.Major -and $version.Minor -gt $highestVersion.Minor) -or
                ($version.Major -eq $highestVersion.Major -and $version.Minor -eq $highestVersion.Minor -and $version.Patch -gt $highestVersion.Patch))
            {
                $highestVersion = $version

                Write-Host "New highest version: [$($highestVersion.Major).$($highestVersion.Minor).$($highestVersion.Patch)]"
            }
          }

          Write-Host "Highest version: [$($highestVersion.Major).$($highestVersion.Minor).$($highestVersion.Patch)]"