remove unnecessary old PowerShell modules (Azure, Microsoft.Entra, Microsoft.Graph)

remove-oldmicrosoftmodules.ps1

import-module -name PoshSemanticVersion

function Get-LatestVersion
(
    [Parameter(Mandatory=$true)]
    [string]$moduleName
    )
{
    $allversions = Get-InstalledModule -Name $moduleName | Sort-Object -Property Version
    for($i = 0; $i -lt $allversions.Count; $i++){
        for($j = $i; $j -lt $allversions.Count; $j++){
                $result = Compare-SemanticVersion -ReferenceVersion $allversions[$i].Version -DifferenceVersion $allversions[$j].Version
                if($result.Precedence -eq '>'){
                    $temp = $allversions[$i]
                    $allversions[$i] = $allversions[$j]
                    $allversions[$j] = $temp
                }
        }
    }
    return $allversions[$allversions.Count - 1].Version
}

function Remove-OldModule
(
    [Parameter(Mandatory=$true)]
    [string]$moduleName
    )
{
    # get all versions of the module
    # but it can't get all versions of the module
    $allversions = Get-InstalledModule -Name $moduleName -AllVersions
    if ($allversions.count -eq 1) {
        return
    }
    # compare all versions of the module with semantic version
    for($i = 0; $i -lt $allversions.Count; $i++){
        for($j = $i; $j -lt $allversions.Count; $j++){
            $result = Compare-SemanticVersion -ReferenceVersion $allversions[$i].Version -DifferenceVersion $allversions[$j].Version
            if($result.Precedence -eq '>'){
                $temp = $allversions[$i]
                $allversions[$i] = $allversions[$j]
                $allversions[$j] = $temp
            }
        }
    }    for ($i = 0; $i -lt $allversions.Count - 1; $i++) {
        write-host "remove:" $moduleName $allversions[$i].Version
        Uninstall-Module -Name $moduleName -RequiredVersion $allversions[$i].Version -Force
    }
}
# Define module patterns to clean up
$modulePatterns = @('az*', 'Microsoft.Entra*', 'Microsoft.Graph*')

foreach($pattern in $modulePatterns) {
    write-host "Processing modules matching pattern: $pattern"
    $installedmodules = Get-InstalledModule -Name $pattern -ErrorAction SilentlyContinue | select-object Name
    if ($installedmodules) {
        foreach($module in $installedmodules){
            write-host "find module:"  $module.Name
            Remove-OldModule -moduleName $module.Name
        }
    } else {
        write-host "No modules found matching pattern: $pattern"
    }
}

# remove unused folder in module path
$documentPath = [System.Environment]::GetFolderPath('mydocuments')
$moduleTargetPath = join-path -Path $documentPath -ChildPath 'PowerShell' 'Modules' 

# Clean up unused folders for all module patterns
$modulePatterns = @('az*', 'Microsoft.Entra*', 'Microsoft.Graph*')

foreach($pattern in $modulePatterns) {
    write-host "Cleaning up folders for modules matching pattern: $pattern"
    $installedmodules = Get-InstalledModule -Name $pattern -ErrorAction SilentlyContinue | select-object Name
    if ($installedmodules) {
        foreach($module in $installedmodules){
            $moduleVersion = Get-LatestVersion -moduleName $module.Name 
            $modulePath = join-path -Path $moduleTargetPath -ChildPath $module.Name
            if (Test-Path $modulePath) {
                $items = Get-childitem $modulePath | Where-Object { $_.Name -ne $moduleVersion } 
                foreach($item in $items)
                { 
                    write-host "removed folder contents:" $module.Name $item.Name
                    Remove-Item -Path $item.FullName -Recurse -Force
                }
            }
        }
    }
}