Generate parameters for Azure Resource Manager template

GenerateTemplateParameters.ps1

param(
    $templateFile,
    [switch] $includeParametersWithDefaults
)
$template = Get-Content $templateFile | ConvertFrom-Json

function getDefaultValue($type){
    switch ($type){
        "bool" {'false'}
        "int" {0}
        "array" {'[]'}
        "object" {'{}'}
        default {'""'}
    }
}

'{
  "$schema": "http://schema.management.azure.com/schemas/2015-01-01/deploymentParameters.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {'
$separator = ""
$template.parameters.psobject.Properties `
    | ?{
        ($includeParametersWithDefaults) -or ($_.Value.defaultValue -eq $null)
    }`
    | %{
        $type = $_.Value.type
        if ($_.Value.defaultValue -eq $null){
            $value = getDefaultValue $type
        } else {
            $value = ConvertTo-Json $_.Value.defaultValue
        }
    "     $separator`"$($_.Name)`": {
         `"value`": $value
     }"
    }
'  }
}'