Vegetables.ps1
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#region some functions for working with vegetable objects Function Get-Vegetable { [cmdletbinding()] [OutputType("vegetable")] [alias("gveg")] Param( [Parameter( Position = 0, ValueFromPipeline, ValueFromPipelineByPropertyName )] [string]$Name, [switch]$RootOnly ) Begin { Write-Verbose "[BEGIN ] Starting: $($MyInvocation.Mycommand)" } Process { if ($name -AND $RootOnly) { Write-Verbose "[PROCESS] Getting vegetable $name where it is a root vegetable" ($global:myvegetables).where( {($_.IsRoot) -And ($_.name -like $name)}) # $global:myvegetables | where {($_.IsRoot) -And ($_.name -like $name)} } elseif ($Name) { Write-Verbose "[PROCESS] Getting vegetable $name" $result = ($global:myvegetables).where( {$_.name -like $name}) if ($result) { $result } else { Throw "Can't find a vegetable with the name $Name" } } elseif ($RootOnly) { Write-Verbose "[PROCESS] Getting root vegetables only" ($global:myvegetables).where({$_.IsRoot}) } else { Write-Verbose "[PROCESS] Getting all vegetables" $global:myvegetables } } End { Write-Verbose "[END ] Ending: $($MyInvocation.Mycommand)" } } Function Set-Vegetable { [cmdletbinding(SupportsShouldProcess, DefaultParameterSetName = "name")] [OutputType("None", "Vegetable")] [Alias("sveg")] Param( [Parameter( Position = 0, ValueFromPipeline, ParameterSetName = "input" )] [Vegetable[]]$InputObject, [Parameter( Position = 0, ValueFromPipeline, ValueFromPipelineByPropertyName, ParameterSetName = "name" )] [string]$Name, [Parameter(ValueFromPipelineByPropertyName)] [int]$Count, [Parameter(ValueFromPipelineByPropertyName)] [status]$CookingState, [switch]$Passthru ) Begin { Write-Verbose "[BEGIN ] Starting: $($MyInvocation.Mycommand)" } #begin Process { if ($PSCmdlet.ParameterSetName -eq 'name') { $inputObject = Get-Vegetable -Name $Name Write-Verbose "[PROCESS] Modifying $name" } else { Write-Verbose "[PROCESS] Modifying $($inputobject.name)" } foreach ($item in $InputObject) { if ($PSCmdlet.ShouldProcess($item.name)) { if ($CookingState) { $item.Prepare($CookingState) } if ($count) { $item.count = $count } if ($Passthru) { $item } } } #foreach } End { Write-Verbose "[END ] Ending: $($MyInvocation.Mycommand)" } #end } Function New-Vegetable { [cmdletbinding(SupportsShouldProcess)] [OutputType("none", "Vegetable")] [alias("nveg")] Param( [Parameter( Position = 0, Mandatory, HelpMessage = "What is the vegetable name?", ValueFromPipelineByPropertyName )] [ValidateNotNullorEmpty()] [string]$Name, [Parameter( Position = 1, Mandatory, HelpMessage = "What is the vegetable color?", ValueFromPipelineByPropertyName )] [ValidateNotNullorEmpty()] [vegcolor]$Color, [Parameter(ValueFromPipelineByPropertyName)] [ValidateRange(1, 20)] [int]$Count = 1, [Parameter(ValueFromPipelineByPropertyName)] [alias("IsRoot")] [switch]$Root, [Parameter( Mandatory, HelpMessage = "Enter a valid PLU code", ValueFromPipelineByPropertyName)] [int]$UPC, [switch]$Passthru ) Begin { Write-Verbose "[BEGIN ] Starting: $($MyInvocation.Mycommand)" } Process { if ($PSCmdlet.ShouldProcess($Name)) { $veggie = [vegetable]::new($name, $Root, $color, $UPC) if ($veggie) { $veggie.count = $Count $global:myvegetables += $veggie if ($passthru) { Write-Output $veggie } } else { Write-Warning "Oops. Something unexpected happened." } } #should process } #process End { Write-Verbose "[END ] Ending: $($MyInvocation.Mycommand)" } #end } #endregion #region create some vegetable objects and store them in a global array $global:myvegetables = @() $raw = Get-Content -Path $PSScriptRoot\rawveggies.json | ConvertFrom-Json $raw | New-Vegetable foreach ($item in $global:myvegetables) { $raw.where( {$_.upc -eq $item.upc}) | Set-Vegetable } #endregion |