Classes/ParcelFactory.ps1
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class ParcelFactory { hidden [hashtable] $Providers static [ParcelFactory] $_instance static [ParcelFactory] Instance() { if ($null -eq [ParcelFactory]::_instance) { [ParcelFactory]::_instance = [ParcelFactory]::new() } return [ParcelFactory]::_instance } ParcelFactory() { $this.Providers = @{} } [ParcelProvider] GetProvider([string]$_name) { $this.AddProvider($_name) return $this.Providers[$_name] } [void] AddProvider([string]$_name) { $_provider = $this.Providers[$_name] if ($null -ne $_provider) { return } $_provider = $this.GetProviderInternal($_name) $this.Providers[$_name] = $_provider } [int] InstallProviders([bool]$_dryRun) { $_installed = 0 foreach ($_name in $this.Providers.Keys) { $_provider = $this.Providers[$_name] if ($_provider.TestProviderInstalled()) { continue } Write-ParcelPackageHeader -Message "$($_provider.Name) [Provider]" $result = $_provider.InstallProvider($_dryRun) $result.WriteStatusMessage($_dryRun) $_installed++ Write-Host ([string]::Empty) } return $_installed } [ParcelProvider] GetProviderInternal([string]$_name) { if ([string]::IsNullOrWhiteSpace($_name)) { throw "Provider name in Factory cannot be empty" } $_provider = $null switch ($_name.ToLowerInvariant()) { 'choco' { $_provider = [ChocoParcelProvider]::new() } 'psgallery' { $_provider = [PSGalleryParcelProvider]::new() } 'scoop' { $_provider = [ScoopParcelProvider]::new() } default { throw "Invalid package provider supplied: $($_name)" } } return $_provider } } |