posharm

0.1.0.0

Functions/Set-ARMvariable.ps1

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 #Requires -Version 5.0
function Set-ARMvariable
{
<#
.SYNOPSIS
    Update an existing variable in the ARM template
 
.DESCRIPTION
    Update an existing variable in the ARM template
 
.PARAMETER Name
    The variable Name. This is a Mandatory parameter and is an dynamic parameter
 
.PARAMETER Value
    The new value for the variable. This is a Mandatory parameter
 
.EXAMPLE
    Set-ARMvariable -Name nicName -Value "MyNewNic"
 
    This will set the variable nicName to value "MyNewNic"
.INPUTS
    string
 
.OUTPUTS
 
.NOTES
    Author: Tore Groneng
    Website: www.firstpoint.no
    Twitter: @ToreGroneng
#>

[cmdletbinding()]
Param(    
    [Parameter(Mandatory)]
    $Value
)

DynamicParam
{
    $Dictionary = New-Object System.Management.Automation.RuntimeDefinedParameterDictionary

    $NewDynParam = @{
        Name = "Name"            
        Mandatory = $true
        ValueFromPipelineByPropertyName = $true
        ValueFromPipeline = $false
        DPDictionary = $Dictionary            
    }
    
    $allVariables = $script:Template.variables.PSobject.Properties.Name

    if ($allVariables)
    {
        $null = $NewDynParam.Add("ValidateSet",$allVariables)
    }
    else
    {
        $null = $NewDynParam.Add("ValidateSet",@("-"))
    }

    New-DynamicParam @NewDynParam
    $Dictionary
}

Begin
{
    $f = $MyInvocation.InvocationName
    Write-Verbose -Message "$f - START"    
}

Process
{
    $Name = $PSBoundParameters.Name    

    $oldValue = Get-ARMVariable -Name $Name | Select-Object -ExpandProperty $Name
    Write-Verbose -Message "$f - Updating variable [$Name] from '$oldValue' to '$Value"
    
    if ($script:Template)
    {
        $script:Template.variables.$name = $Value
    }
}

End
{
    Write-Verbose -Message "$f - END"
    
}
}