Patch-SitecoreCommercePolicySet.ps1

<#
**Prototype**
Updates the properties of one or more Sitecore Commerce policies in a policy set or environment json file.


# Patch all policies from another file
Patch-SitecoreCommercePolicySet -Path "path\to\policy.json"  -SourcePath "path\to\source.json"

# Patch a specific policy from another file
Patch-SitecoreCommercePolicySet -Path "path\to\policy.json"  -SourcePath "path\to\source.json" -PolicyType "Fully.Qualified.Type, With.Assembly.But.Spaces.Are.Ignored"

# Single inline policy
Patch-SitecoreCommercePolicySet -Path "path\to\policy.json" -PolicyType "Fully.Qualified, Type" -Properties @{ "Property1" = "Value1"; "Property2" = "Value2" }

# Multiple inline policies
Patch-SitecoreCommercePolicySet -Path "path\to\policy.json" -SourcePolicies @(
	@{
		'$type' = "Fully.Qualified.Type, Note.The.SingleQuotes.On.$type",
		"Property1" = "Value1";
		"Property2" = "Value2";
	},
	@{
		'type' = "Another.Type, Qualified",
		"Etc" = "Etc"
	}
)

#>
[CmdletBinding(DefaultParameterSetName = 'singleparametersource')]
Param(
    [string]$Path,

    [Parameter(ParameterSetName='filesource', Mandatory=$true)]
    [string]$SourcePath,

    [Parameter(ParameterSetName='multipleparametersource')]
    [Hashtable[]]$SourcePolicies,

    [Parameter(ParameterSetName='filesource', Mandatory=$false)]
    [Parameter(ParameterSetName='singleparametersource', Mandatory=$true)]
    [string]$PolicyType,

    [Parameter(ParameterSetName='singleparametersource', Mandatory=$true)]
    [Hashtable]$Properties
)

function NormalizeTypeName([string]$typeName) {
    return $typeName -replace " ",""
}

$SourcePolicies = if ($PSCmdlet.ParameterSetName -eq "filesource") {

    $sourceJson = Get-Content -Path $Path -Raw | ConvertFrom-Json

    if ($PolicyType) {
        @($sourceJson.Policies | Where-Object { (NormalizeTypeName $_.'$type') -eq (NormalizeTypeName $PolicyType) })
    } else {
        @($sourceJson.Policies)
    }
    
} elseif ($PSCmdlet.ParameterSetName -eq "singleparametersource") {
    $clonedProperties = $Properties.Clone()
    $clonedProperties['$type'] = $PolicyType
    @($clonedProperties)
} else {
    @($SourcePolicies)
}

$targetJson = Get-Content -Path $Path -Raw | ConvertFrom-Json

$targetJsonPolicies = $targetJson.Policies.'$values'

$SourcePolicies | Foreach-Object {

    $sourcePolicy = $_

    $targetPolicyIndex =  (0..(@($targetJsonPolicies).Count-1)) | Where-Object { 
        (NormalizeTypeName $targetJson.Policies.'$values'[$_].'$type') -eq (NormalizeTypeName $sourcePolicy.'$type')
    }

    if ($targetPolicyIndex -eq $null) {
        $targetPolicy = @{
            '$type' = $sourcePolicy.'$type'
        }
        $targetJson.Policies.'$values' += @($targetPolicy)
        $targetPolicyIndex = @($targetJson.Policies).Count-1
    } else {
        $targetPolicy = $targetJson.Policies.'$values'[$targetPolicyIndex].psobject.properties | % { $ht = @{} } { $ht[$_.Name] = $_.Value } { $ht } 

        $targetJson.Policies.'$values'[$targetPolicyIndex] = $targetPolicy
    }

    $sourcePolicy.Keys | Where-Object { $_ -ne '$type' } | Foreach-Object {
        $targetPolicy[$_] = $sourcePolicy[$_]
    }
}

$targetJson | ConvertTo-Json -Depth 100