getprojectversion.ps1

param (
    [string]$Filename
)

try
{
    $ErrorActionPreference = 'Stop';
    $Error.Clear();
    $verbose = $env:VERBOSE

    $runnerPath = $env:GITHUB_WORKSPACE

    # Search for the file recursively within the runner path
    $File = Get-ChildItem -Path $runnerPath -Recurse -Filter $Filename -File | Select-Object -First 1

    if ($verbose.ToLower() -eq 'verbose')
    {
        Write-Host "GetProjectVersion DEBUG"
        Write-Host "Filename   : $($Filename)"
        Write-Host "RunnerPath : $($runnerPath)"
        Write-Host "SourcePath : $($File.FullName)"
        Write-Host "-----------------------------"
        (Get-ChildItem -Path $runnerPath -Recurse).FullName
        Write-Host "-----------------------------"
    }

    if (-not $File)
    {
        throw "File '$Filename' not found in $runnerPath"
    }

    switch ($File.Extension)
    {
        { $_ -in '.csproj', '.props' }
        {
            $Project = [xml](Get-Content -Path $File.FullName);
            if (($Project.SelectSingleNode('//PropertyGroup/Version')?.InnerText)?.Trim())
            {
                $Version = $Project.SelectSingleNode('//PropertyGroup/Version').InnerText.Trim()
            }
            else
            {
                $Version = $Project.SelectSingleNode('//PropertyGroup/VersionPrefix').InnerText.Trim()
            }
        }
        '.psd1'
        {
            $Manifest = Test-ModuleManifest -Path $File.FullName -ErrorAction SilentlyContinue
            $Version = $Manifest.Version.ToString()
        }
        default
        {
            throw "The extension, $($File.Extension) is not currently a supported type, please create an issue to address this"
        }
    }

    if ($verbose.ToLower() -eq 'verbose')
    {
        Write-Host "Extension  : $($File.Extension)"
        Write-Host "Version    : $($Version)"
    }

    # Set the output using environment files
    $envFile = [System.IO.Path]::Combine($env:GITHUB_ENV)
    Add-Content -Path $envFile -Value "VERSION=$Version"
}
catch
{
    $_.InvocationInfo | Out-String
    throw $_.Exception.Message;
}