`refactor`: add lib to uninstall/install optional features

- Optimized code from optimize-windows-features
- There are to switches to the function: `-Disabled` or `-Enabled`
- Also disable Internet Explorer from Optional Features

src/lib/set-windows-feature-state.psm1

@@ -0,0 +1,83 @@
+Import-Module -DisableNameChecking $PSScriptRoot\..\lib\"title-templates.psm1"
+
+function Find-OptionalFeature() {
+    [CmdletBinding()]
+    [OutputType([Bool])]
+    param (
+        [Parameter(Mandatory = $true)]
+        [String] $OptionalFeature
+    )
+
+    If (Get-WindowsOptionalFeature -Online -FeatureName $OptionalFeature) {
+        return $true
+    }
+    Else {
+        Write-Status -Symbol "?" -Type $TweakType -Status "The $OptionalFeature optional feature was not found." -Warning
+        return $false
+    }
+}
+
+function Set-OptionalFeatureState() {
+    [CmdletBinding()]
+    param (
+        [Parameter(Mandatory = $false)]
+        [Switch] $Disabled,
+        [Parameter(Mandatory = $false)]
+        [Switch] $Enabled,
+        [Parameter(Mandatory = $true)]
+        [Array] $OptionalFeatures,
+        [Parameter(Mandatory = $false)]
+        [Array] $Filter,
+        [Parameter(Mandatory = $false)]
+        [ScriptBlock] $CustomMessage
+    )
+
+    $Script:SecurityFilterOnEnable = @("IIS-*")
+    $Script:TweakType = "OptionalFeature"
+
+    ForEach ($OptionalFeature in $OptionalFeatures) {
+        If (Find-OptionalFeature $OptionalFeature) {
+            If (($OptionalFeature -in $SecurityFilterOnEnable) -and ($Enabled)) {
+                Write-Status -Symbol "?" -Type $TweakType -Status "Skipping $OptionalFeature to avoid a security vulnerability ..." -Warning
+                Continue
+            }
+
+            If ($OptionalFeature -in $Filter) {
+                Write-Status -Symbol "?" -Type $TweakType -Status "The $OptionalFeature will be skipped as set on Filter ..." -Warning
+                Continue
+            }
+
+            If (!$CustomMessage) {
+                If ($Disabled) {
+                    Write-Status -Symbol "-" -Type $TweakType -Status "Uninstalling the $OptionalFeature optional feature ..."
+                }
+                ElseIf ($Enabled) {
+                    Write-Status -Symbol "+" -Type $TweakType -Status "Installing the $OptionalFeature optional feature ..."
+                }
+                Else {
+                    Write-Status -Symbol "?" -Type $TweakType -Status "No parameter received (valid params: -Disabled or -Enabled)" -Warning
+                }
+            }
+            Else {
+                Write-Status -Symbol "@" -Type $TweakType -Status $(Invoke-Expression "$CustomMessage")
+            }
+
+            If ($Disabled) {
+                Get-WindowsOptionalFeature -Online -FeatureName $OptionalFeature | Where-Object State -Like "Enabled" | Disable-WindowsOptionalFeature -Online -NoRestart
+            }
+            ElseIf ($Enabled) {
+                Get-WindowsOptionalFeature -Online -FeatureName $OptionalFeature | Where-Object State -Like "Disabled*" | Enable-WindowsOptionalFeature -Online -NoRestart
+            }
+        }
+    }
+}
+
+<#
+Set-OptionalFeatureState -Disabled -OptionalFeatures @("OptionalFeature1", "OptionalFeature2", "OptionalFeature3")
+Set-OptionalFeatureState -Disabled -OptionalFeatures @("OptionalFeature1", "OptionalFeature2", "OptionalFeature3") -Filter @("OptionalFeature3")
+Set-OptionalFeatureState -Disabled -OptionalFeatures @("OptionalFeature1", "OptionalFeature2", "OptionalFeature3") -Filter @("OptionalFeature3") -CustomMessage { "Uninstalling $OptionalFeature feature!"}
+
+Set-OptionalFeatureState -Enabled -OptionalFeatures @("OptionalFeature1", "OptionalFeature2", "OptionalFeature3")
+Set-OptionalFeatureState -Enabled -OptionalFeatures @("OptionalFeature1", "OptionalFeature2", "OptionalFeature3") -Filter @("OptionalFeature3")
+Set-OptionalFeatureState -Enabled -OptionalFeatures @("OptionalFeature1", "OptionalFeature2", "OptionalFeature3") -Filter @("OptionalFeature3") -CustomMessage { "Installing $OptionalFeature feature!"}
+#>

src/scripts/optimize-windows-features.ps1

@@ -1,3 +1,4 @@
+Import-Module -DisableNameChecking $PSScriptRoot\..\lib\"set-windows-feature-state.psm1"
 Import-Module -DisableNameChecking $PSScriptRoot\..\lib\"title-templates.psm1"
 
 # Adapted from: https://github.com/ChrisTitusTech/win10script/pull/131/files
@@ -5,39 +6,13 @@ Import-Module -DisableNameChecking $PSScriptRoot\..\lib\"title-templates.psm1"
 function Optimize-WindowsFeaturesList() {
     [CmdletBinding()]
     param (
-        [Switch] $Revert,
-        [Array]  $EnableStatus = @(
-            @{
-                Symbol = "-"; Status = "Uninstalling";
-                Command = { Get-WindowsOptionalFeature -Online -FeatureName $Feature | Where-Object State -Like "Enabled" | Disable-WindowsOptionalFeature -Online -NoRestart }
-            }
-            @{
-                Symbol = "+"; Status = "Installing";
-                Command = { Get-WindowsOptionalFeature -Online -FeatureName $Feature | Where-Object State -Like "Disabled*" | Enable-WindowsOptionalFeature -Online -NoRestart }
-            }
-        )
+        [Switch] $Revert
     )
-    $TweakType = "Feature"
-
-    If (($Revert)) {
-        Write-Status -Symbol "<" -Type $TweakType -Status "Reverting: $Revert." -Warning
-        $EnableStatus = @(
-            @{
-                Symbol = "<"; Status = "Re-Installing";
-                Command = { Get-WindowsOptionalFeature -Online -FeatureName $Feature | Where-Object State -Like "Disabled*" | Enable-WindowsOptionalFeature -Online -NoRestart }
-            }
-            @{
-                Symbol = "<"; Status = "Re-Uninstalling";
-                Command = { Get-WindowsOptionalFeature -Online -FeatureName $Feature | Where-Object State -Like "Enabled" | Disable-WindowsOptionalFeature -Online -NoRestart }
-            }
-        )
-    }
-
-    Write-Title -Text "Uninstall features from Windows"
 
     $DisableFeatures = @(
         "FaxServicesClientPackage"             # Windows Fax and Scan
         "IIS-*"                                # Internet Information Services
+        "Internet-Explorer-Optional-*"         # Internet Explorer
         "LegacyComponents"                     # Legacy Components
         "MediaPlayback"                        # Media Features (Windows Media Player)
         "MicrosoftWindowsPowerShellV2"         # PowerShell 2.0
@@ -46,21 +21,6 @@ function Optimize-WindowsFeaturesList() {
         "Printing-XPSServices-Features"        # Microsoft XPS Document Writer
         "WorkFolders-Client"                   # Work Folders Client
     )
-    ForEach ($Feature in $DisableFeatures) {
-        If (Get-WindowsOptionalFeature -Online -FeatureName $Feature) {
-            If (($Revert -eq $true) -and ($Feature -like "IIS-*")) {
-                Write-Status -Symbol "?" -Type $TweakType -Status "Skipping $Feature to avoid a security vulnerability ..." -Warning
-                Continue
-            }
-            Write-Status -Symbol $EnableStatus[0].Symbol -Type $TweakType -Status "$($EnableStatus[0].Status) $Feature ..."
-            Invoke-Expression "$($EnableStatus[0].Command)"
-        }
-        Else {
-            Write-Status -Symbol "?" -Type $TweakType -Status "$Feature was not found." -Warning
-        }
-    }
-
-    Write-Title -Text "Install features for Windows"
 
     $EnableFeatures = @(
         "NetFx3"                            # NET Framework 3.5
@@ -68,15 +28,20 @@ function Optimize-WindowsFeaturesList() {
         "NetFx4Extended-ASPNET45"           # NET Framework 4.x + ASPNET 4.x
     )
 
-    ForEach ($Feature in $EnableFeatures) {
-        If (Get-WindowsOptionalFeature -Online -FeatureName $Feature) {
-            Write-Status -Symbol "+" -Type $TweakType -Status "Installing $Feature ..."
-            Get-WindowsOptionalFeature -Online -FeatureName $Feature | Where-Object State -Like "Disabled*" | Enable-WindowsOptionalFeature -Online -NoRestart
-        }
-        Else {
-            Write-Status -Symbol "?" -Type $TweakType -Status "$Feature was not found." -Warning
-        }
+    Write-Title -Text "Optional Features Tweaks"
+    Write-Section -Text "Uninstall Optional Features from Windows"
+
+    If ($Revert) {
+        Write-Status -Symbol "<" -Type "OptionalFeature" -Status "Reverting the tweaks is set to '$Revert'." -Warning
+        $CustomMessage = { "Re-Installing the $OptionalFeature optional feature ..." }
+        Set-OptionalFeatureState -Enabled -OptionalFeatures $DisableFeatures -CustomMessage $CustomMessage
+    }
+    Else {
+        Set-OptionalFeatureState -Disabled -OptionalFeatures $DisableFeatures
     }
+
+    Write-Section -Text "Install Optional Features from Windows"
+    Set-OptionalFeatureState -Enabled -OptionalFeatures $EnableFeatures
 }
 
 function Main() {
@@ -89,7 +54,7 @@ function Main() {
     # List all Windows Capabilities:
     #Get-WindowsCapability -Online | Select-Object -Property State, Name | Sort-Object State, Name | Out-GridView
 
-    If (!($Revert)) {
+    If (!$Revert) {
         Optimize-WindowsFeaturesList # Disable useless features and Enable features claimed as Optional on Windows, but actually, they are useful
     }
     Else {