Version 1.0.0

.gitignore

@@ -0,0 +1,3 @@
+.git
+.sample
+.tests

Merge-ConfigurationData.ps1

@@ -1,70 +0,0 @@
-function Merge-ConfigurationData {
-    [CmdletBinding()]
-    Param(
-        [Parameter(Mandatory=$true)]
-        [System.Collections.Hashtable]
-        $Template,
-        [Parameter(Mandatory=$true)]
-        [System.Collections.Hashtable]
-        $Deployment,
-        [Parameter(Mandatory=$false)]        
-        [System.Collections.Hashtable]
-        $Output
-    )
-   
-    if($Output -eq $null){
-        $Output = $Deployment
-    }
-
-    foreach($Property in $Template.GetEnumerator()){
-        if($Property.Value -is [System.Collections.Hashtable]){
-            Write-Verbose "Key [$($Property.Name)] is a Hashtable"
-            if($null -ne $Deployment.$($Property.Name)){
-                Write-Verbose "Key [$($Property.Name)] is present in Deployment Data"
-                $Output.($Property.Name) = Merge-ConfigurationData -Template $Template.$($Property.Name) -Deployment $Deployment.$($Property.Name) -Output $Output.$($Property.Name)
-            }else{
-                Write-Verbose "Key [$($Property.Name)] is not present in Deployment Data"
-                $Output.Add($($Property.Name),$Template.$($Property.Name))
-            }
-        }elseif($Property.Value -is [System.Collections.Specialized.OrderedDictionary]){
-            Write-Verbose "Key [$($Property.Name)] is a Ordered Dictionary"
-            if($null -ne $Deployment.$($Property.Name)){
-                Write-Verbose "Key [$($Property.Name)] is present in Deployment Data"
-                $Output.($Property.Name) = Merge-ConfigurationData -Template $Template.$($Property.Name) -Deployment $Deployment.$($Property.Name) -Output $Output.$($Property.Name)
-            }else{
-                Write-Verbose "Key [$($Property.Name)] is not present in Deployment Data"
-                $Output.Add($($Property.Name),$Template.$($Property.Name))
-            }
-        }elseif($Property.Value -is [System.Array]){
-            Write-Verbose "$($Property.Name) is ein Array"
-            Write-Verbose "Total Items in Template Array [$($Property.Value.Count)]"
-            Write-Verbose "Total Items in Deployment Array [$($Deployment.$($Property.Name).Count)]"
-            if($null -ne $Deployment.$($Property.Name)){
-                Write-Verbose "Array is defined in Deployment"
-                for($i=0;$i -lt $Property.Value.Count; $i++){ 
-                    
-                    $SearchItem = $($Property.Value[$i].GetEnumerator() | Where-Object {($_.Value -is [String]) -and ($_.Name -like "*Name")})[0]
-                    if($($Deployment.$($Property.Name) | ? { $_.($SearchItem.Name) -eq $SearchItem.Value })){
-                        Merge-ConfigurationData -Template $Property.Value[$i] -Deployment $($Deployment.$($Property.Name) | ? { $_.($SearchItem.Name) -eq $SearchItem.Value }) -Output $($Output.$($Property.Name) | ? { $_.($SearchItem.Name) -eq $SearchItem.Value }) | Out-Null
-                    }else{
-                        Write-Verbose "Pair $($Key.Name) - $($Key.Value) not present"
-                        $Output.$($Property.Name) += $Property.Value[$i]
-                    }
-                }
-            }else{
-                Write-Verbose "Array is not defined in Deployment"
-                $Output.$($Property.Name) = $Template.$($Property.Name)
-            }
-        }else{
-            Write-Verbose "$($Property.Name) is a String or Integer Value"
-            if($null -eq $Deployment.$($Property.Name)){
-
-                $Output.Add($Property.Name,$Template.($Property.Name))
-
-            }elseif($Deployment.$($Property.Name) -ne $Property.Value){
-
-            }
-        }
-    }
-    return $Output
-}

Merge-DSCConfigurationData.psd1

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+@{
+    RootModule = "Merge-DSCConfigurationData.psm1"
+    ModuleVersion = "1.0.0"
+    GUID = "c1c7e70d-9049-4eaa-a3c9-44a424c35ef5"
+    Author = "Torsten Brendgen"
+    Copyright = "(c) Torsten Brendgen. All rights reserved."
+    Description = "Merges DSC configuration data from templates and deployment data."
+    PowerShellVersion = "5.1"
+    FunctionsToExport = @(
+        "Merge-DSCConfigurationData"
+    )
+    CmdletsToExport = @()
+    VariablesToExport = @()
+    AliasesToExport = @()
+    PrivateData = @{
+        PSData = @{
+            Tags = @(
+                "DSC",
+                "ConfigurationData"
+            )
+            ReleaseNotes = "Initial module layout."
+        }
+    }
+}

Merge-DSCConfigurationData.psm1

@@ -0,0 +1,13 @@
+$PrivatePath = Join-Path -Path $PSScriptRoot -ChildPath "Private"
+$PublicPath = Join-Path -Path $PSScriptRoot -ChildPath "Public"
+
+$Private = @(Get-ChildItem -Path $PrivatePath -Filter "*.ps1" -File -ErrorAction Stop | Sort-Object -Property FullName)
+$Public = @(Get-ChildItem -Path $PublicPath -Filter "*.ps1" -File -ErrorAction Stop | Sort-Object -Property FullName)
+
+foreach($File in @($Private + $Public)){
+    . $File.FullName
+}
+
+Export-ModuleMember -Function @(
+    "Merge-DSCConfigurationData"
+)

Private/Copy-ConfigurationDataValue.ps1

@@ -0,0 +1,37 @@
+function Copy-ConfigurationDataValue {
+    [CmdletBinding()]
+    Param(
+        [AllowNull()]
+        $Value
+    )
+
+    if($null -eq $Value){
+        return $null
+    }
+
+    if($Value -is [System.Collections.Specialized.OrderedDictionary]){
+        $Copy = [ordered]@{}
+        foreach($Entry in $Value.GetEnumerator()){
+            $Copy[$Entry.Name] = Copy-ConfigurationDataValue -Value $Entry.Value
+        }
+        return $Copy
+    }
+
+    if($Value -is [System.Collections.Hashtable]){
+        $Copy = @{}
+        foreach($Entry in $Value.GetEnumerator()){
+            $Copy[$Entry.Name] = Copy-ConfigurationDataValue -Value $Entry.Value
+        }
+        return $Copy
+    }
+
+    if($Value -is [System.Array]){
+        $Copy = @()
+        foreach($Item in $Value){
+            $Copy += ,(Copy-ConfigurationDataValue -Value $Item)
+        }
+        return ,$Copy
+    }
+
+    return $Value
+}

Private/Format-ConfigurationDataMergeKey.ps1

@@ -0,0 +1,16 @@
+function Format-ConfigurationDataMergeKey {
+    [CmdletBinding()]
+    Param(
+        [AllowNull()]
+        $Item,
+        [Parameter(Mandatory=$true)]
+        [String[]]
+        $KeyNames
+    )
+
+    $Pairs = foreach($KeyName in $KeyNames){
+        "$KeyName=$(Get-ConfigurationDataItemValue -Item $Item -KeyName $KeyName)"
+    }
+
+    return ($Pairs -join ", ")
+}

Private/Get-ConfigurationDataArrayMergeKeyNames.ps1

@@ -0,0 +1,30 @@
+function Get-ConfigurationDataArrayMergeKeyNames {
+    [CmdletBinding()]
+    Param(
+        [Parameter(Mandatory=$true)]
+        [String]
+        $ArrayName,
+        [AllowNull()]
+        $Item
+    )
+
+    $MergeKeyMap = @{
+        Instances = @("Name")
+        ConfigurationOptions = @("OptionName")
+        AdditionalScripts = @("ScriptName")
+        Templates = @("TemplateName")
+        AllNodes = @("NodeName")
+        Registry = @("Key","ValueName")
+    }
+
+    if($MergeKeyMap.ContainsKey($ArrayName)){
+        return $MergeKeyMap[$ArrayName]
+    }
+
+    $SearchItem = Get-ConfigurationDataArraySearchItem -Item $Item
+    if($null -ne $SearchItem){
+        return @($SearchItem.Name)
+    }
+
+    return @()
+}

Private/Get-ConfigurationDataArraySearchItem.ps1

@@ -0,0 +1,24 @@
+function Get-ConfigurationDataArraySearchItem {
+    [CmdletBinding()]
+    Param(
+        [AllowNull()]
+        $Item
+    )
+
+    if($null -eq $Item){
+        return $null
+    }
+
+    if(-not (
+        ($Item -is [System.Collections.Hashtable]) -or
+        ($Item -is [System.Collections.Specialized.OrderedDictionary])
+    )){
+        return $null
+    }
+
+    return @(
+        $Item.GetEnumerator() |
+            Where-Object { ($_.Value -is [String]) -and ($_.Name -like "*Name") } |
+            Select-Object -First 1
+    )[0]
+}

Private/Get-ConfigurationDataItemValue.ps1

@@ -0,0 +1,20 @@
+function Get-ConfigurationDataItemValue {
+    [CmdletBinding()]
+    Param(
+        [AllowNull()]
+        $Item,
+        [Parameter(Mandatory=$true)]
+        [String]
+        $KeyName
+    )
+
+    if(-not (Test-ConfigurationDataItemContainsKey -Item $Item -KeyName $KeyName)){
+        return $null
+    }
+
+    if($Item -is [System.Collections.IDictionary]){
+        return $Item[$KeyName]
+    }
+
+    return $Item.$KeyName
+}

Private/Test-ConfigurationDataItemContainsKey.ps1

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+function Test-ConfigurationDataItemContainsKey {
+    [CmdletBinding()]
+    Param(
+        [AllowNull()]
+        $Item,
+        [Parameter(Mandatory=$true)]
+        [String]
+        $KeyName
+    )
+
+    if($null -eq $Item){
+        return $false
+    }
+
+    if($Item -is [System.Collections.IDictionary]){
+        return $Item.Contains($KeyName)
+    }
+
+    return $null -ne $Item.PSObject.Properties[$KeyName]
+}

Private/Test-ConfigurationDataItemHasKeys.ps1

@@ -0,0 +1,18 @@
+function Test-ConfigurationDataItemHasKeys {
+    [CmdletBinding()]
+    Param(
+        [AllowNull()]
+        $Item,
+        [Parameter(Mandatory=$true)]
+        [String[]]
+        $KeyNames
+    )
+
+    foreach($KeyName in $KeyNames){
+        if(-not (Test-ConfigurationDataItemContainsKey -Item $Item -KeyName $KeyName)){
+            return $false
+        }
+    }
+
+    return $true
+}

Private/Test-ConfigurationDataItemKeyMatch.ps1

@@ -0,0 +1,32 @@
+function Test-ConfigurationDataItemKeyMatch {
+    [CmdletBinding()]
+    Param(
+        [AllowNull()]
+        $Left,
+        [AllowNull()]
+        $Right,
+        [Parameter(Mandatory=$true)]
+        [String[]]
+        $KeyNames
+    )
+
+    if($KeyNames.Count -eq 0){
+        return $false
+    }
+
+    foreach($KeyName in $KeyNames){
+        if(-not (Test-ConfigurationDataItemContainsKey -Item $Left -KeyName $KeyName)){
+            return $false
+        }
+
+        if(-not (Test-ConfigurationDataItemContainsKey -Item $Right -KeyName $KeyName)){
+            return $false
+        }
+
+        if((Get-ConfigurationDataItemValue -Item $Left -KeyName $KeyName) -ne (Get-ConfigurationDataItemValue -Item $Right -KeyName $KeyName)){
+            return $false
+        }
+    }
+
+    return $true
+}

Private/Test-ConfigurationDataItemWildcard.ps1

@@ -0,0 +1,20 @@
+function Test-ConfigurationDataItemWildcard {
+    [CmdletBinding()]
+    Param(
+        [AllowNull()]
+        $Item,
+        [Parameter(Mandatory=$true)]
+        [String[]]
+        $KeyNames
+    )
+
+    if($KeyNames.Count -ne 1){
+        return $false
+    }
+
+    if(-not (Test-ConfigurationDataItemContainsKey -Item $Item -KeyName $KeyNames[0])){
+        return $false
+    }
+
+    return (Get-ConfigurationDataItemValue -Item $Item -KeyName $KeyNames[0]) -eq "*"
+}

Public/Merge-DSCConfigurationData.ps1

@@ -0,0 +1,98 @@
+function Merge-DSCConfigurationData {
+    [CmdletBinding()]
+    Param(
+        [Parameter(Mandatory=$true)]
+        [System.Collections.Hashtable]
+        $Template,
+        [Parameter(Mandatory=$true)]
+        [System.Collections.Hashtable]
+        $Deployment,
+        [Parameter(Mandatory=$false)]
+        [System.Collections.Hashtable]
+        $Output
+    )
+
+    if($Output -eq $null){
+        $Output = $Deployment
+    }
+
+    foreach($Property in $Template.GetEnumerator()){
+        if($Property.Value -is [System.Collections.Hashtable]){
+            Write-Verbose "Key [$($Property.Name)] is a Hashtable"
+            if($null -ne $Deployment.$($Property.Name)){
+                Write-Verbose "Key [$($Property.Name)] is present in Deployment Data"
+                $Output.($Property.Name) = Merge-DSCConfigurationData -Template $Template.$($Property.Name) -Deployment $Deployment.$($Property.Name) -Output $Output.$($Property.Name)
+            }else{
+                Write-Verbose "Key [$($Property.Name)] is not present in Deployment Data"
+                $Output.Add($($Property.Name),(Copy-ConfigurationDataValue -Value $Template.$($Property.Name)))
+            }
+        }elseif($Property.Value -is [System.Collections.Specialized.OrderedDictionary]){
+            Write-Verbose "Key [$($Property.Name)] is a Ordered Dictionary"
+            if($null -ne $Deployment.$($Property.Name)){
+                Write-Verbose "Key [$($Property.Name)] is present in Deployment Data"
+                $Output.($Property.Name) = Merge-DSCConfigurationData -Template $Template.$($Property.Name) -Deployment $Deployment.$($Property.Name) -Output $Output.$($Property.Name)
+            }else{
+                Write-Verbose "Key [$($Property.Name)] is not present in Deployment Data"
+                $Output.Add($($Property.Name),(Copy-ConfigurationDataValue -Value $Template.$($Property.Name)))
+            }
+        }elseif($Property.Value -is [System.Array]){
+            Write-Verbose "$($Property.Name) is ein Array"
+            Write-Verbose "Total Items in Template Array [$($Property.Value.Count)]"
+            Write-Verbose "Total Items in Deployment Array [$($Deployment.$($Property.Name).Count)]"
+            if($null -ne $Deployment.$($Property.Name)){
+                Write-Verbose "Array is defined in Deployment"
+
+                $TemplateItems = for($i=0;$i -lt $Property.Value.Count; $i++){
+                    $SearchKeyNames = @(Get-ConfigurationDataArrayMergeKeyNames -ArrayName $Property.Name -Item $Property.Value[$i])
+                    [PSCustomObject]@{
+                        Value = $Property.Value[$i]
+                        SearchKeyNames = $SearchKeyNames
+                        IsWildcard = Test-ConfigurationDataItemWildcard -Item $Property.Value[$i] -KeyNames $SearchKeyNames
+                    }
+                }
+
+                $TemplateItems = @($TemplateItems | Where-Object { -not $_.IsWildcard }) + @($TemplateItems | Where-Object { $_.IsWildcard })
+
+                foreach($TemplateItem in $TemplateItems){
+                    $SearchKeyNames = @($TemplateItem.SearchKeyNames)
+
+                    if($SearchKeyNames.Count -eq 0){
+                        Write-Verbose "No matching name key found for item in [$($Property.Name)]"
+                        $Output.$($Property.Name) += ,(Copy-ConfigurationDataValue -Value $TemplateItem.Value)
+                        continue
+                    }
+
+                    if($TemplateItem.IsWildcard){
+                        $MatchingDeploymentItems = @($Deployment.$($Property.Name) | Where-Object { Test-ConfigurationDataItemHasKeys -Item $_ -KeyNames $SearchKeyNames })
+                    }else{
+                        $MatchingDeploymentItems = @($Deployment.$($Property.Name) | Where-Object { Test-ConfigurationDataItemKeyMatch -Left $_ -Right $TemplateItem.Value -KeyNames $SearchKeyNames })
+                    }
+
+                    if($MatchingDeploymentItems.Count -gt 0){
+                        foreach($DeploymentItem in $MatchingDeploymentItems){
+                            $OutputItem = @($Output.$($Property.Name) | Where-Object { Test-ConfigurationDataItemKeyMatch -Left $_ -Right $DeploymentItem -KeyNames $SearchKeyNames })[0]
+                            Merge-DSCConfigurationData -Template $TemplateItem.Value -Deployment $DeploymentItem -Output $OutputItem | Out-Null
+                        }
+                    }else{
+                        if($TemplateItem.IsWildcard){
+                            Write-Verbose "Wildcard item [$(Format-ConfigurationDataMergeKey -Item $TemplateItem.Value -KeyNames $SearchKeyNames)] in [$($Property.Name)] matched no deployment items"
+                        }else{
+                            Write-Verbose "Pair [$(Format-ConfigurationDataMergeKey -Item $TemplateItem.Value -KeyNames $SearchKeyNames)] not present"
+                            $Output.$($Property.Name) += ,(Copy-ConfigurationDataValue -Value $TemplateItem.Value)
+                        }
+                    }
+                }
+            }else{
+                Write-Verbose "Array is not defined in Deployment"
+                $Output.$($Property.Name) = Copy-ConfigurationDataValue -Value $Template.$($Property.Name)
+            }
+        }else{
+            Write-Verbose "$($Property.Name) is a String or Integer Value"
+            if($null -eq $Deployment.$($Property.Name)){
+                $Output.Add($Property.Name,(Copy-ConfigurationDataValue -Value $Template.($Property.Name)))
+            }elseif($Deployment.$($Property.Name) -ne $Property.Value){
+            }
+        }
+    }
+    return $Output
+}