<#
Author: Gabe Kerntke
Company: UFS LLC
Date: 02-21-2024

.Synopsis
Script checks to see if Webex is installed, if it is then it will find the uninstall string from registry and uninstall it via that method

.Modified
2024-02-21 (GabeK) - Original script created
2025-07-28 (GabeK) - Updated to use functions script
#>

#  Variables  #
$App_Name = "Webex"
$users = (Get-ChildItem -path c:\users).name
#  Functions  #

#Function to uninstall via Reg Key uninstall string
Function Uninstall-App {
    $UninstallString = $Applist | Where-Object { $_.DisplayName -eq $App_Name } | Select-Object -ExpandProperty UninstallString
    $UninstallString + " /qn" | cmd
    If ($Applist.DisplayName -like "*$App_Name*") {
        Uninstall-App2
    }
    Else {
        Write-Host "$App_Name uninstalled successfully"
    }
}

#Function to uninstall via Reg Key uninstall string
Function Uninstall-App2 {    
    $UninstallString = $Applist | Where-Object { $_.DisplayName -eq $App_Name } | Select-Object -ExpandProperty UninstallString | Where-Object ($_.UninstallString -like "*C:\*")
    $UninstallString += " -silent" | cmd
    If ($Applist.DisplayName -like "*$App_Name*") {
        Uninstall-App_PSPath
    }
    Else {
        Write-Host "$App_Name uninstalled successfully"
    }
}    

#Function to uninstall by deleting User Reg Key
Function Uninstall-App3 {  
    New-PSDrive -PSProvider Registry -Name HKU -Root HKEY_USERS
    $RegistyPath = Get-ChildItem -Path HKU:\ | Select-Object -ExpandProperty Name 
    $Registy = $RegistyPath.Substring(10)

    Foreach ($Reg in $Registy) {
        Get-ChildItem HKU:$Reg | Where-Object { $_.Name -like "*Webex*" } | Remove-Item -Force -Verbose -Recurse
    }
    Write-Host "$App_Name removed successfully"
}

Function Test-Uninstall {
    foreach ($user in $users) {
        $path = "C:\Users\$user\AppData\Local\Programs\Cisco Spark"
        $path2 = "C:\Users\$user\AppData\Local\CiscoSpark"
        $path3 = "C:\Users\$user\AppData\Local\CiscoSparkLauncher"
        $path4 = "C:\Users\$user\AppData\Local\CiscoWebexLauncher"
        If (Test-Path $path) {
            Remove-Item $path -Force -Recurse -Verbose
            Remove-Item $path2 -Force -Recurse -Verbose
            Remove-Item $path3 -Force -Recurse -Verbose
            Remove-Item $path4 -Force -Recurse -Verbose
        }
    }
    
    New-PSDrive -PSProvider Registry -Name HKU -Root HKEY_USERS -ErrorAction SilentlyContinue | Out-Null
    $Keys = Get-ChildItem "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\" -Recurse
    $SIDs = $Keys.PSChildName
    foreach ($SID in $SIDs) {
        If (Test-Path "HKU:\$SID\Software\Microsoft\Windows\CurrentVersion\Uninstall") {
            Get-ChildItem "HKU:\$SID\Software\Microsoft\Windows\CurrentVersion\Uninstall" | Where-Object { $_ -like "*Webex*" } | Remove-Item -Force -Recurse -Verbose -ErrorAction SilentlyContinue
        }
        If (Test-Path "HKU:\$SID\Software\Microsoft\Windows\CurrentVersion\Uninstall\*webex*") {
            Write-Host "Webex uninstall key for $SID still exists."
        }
    }

    $Tool = "CiscoWebexRemoveTool.exe"
    $URL = "https://www.cisco.com/c/dam/en/us/td/docs/collaboration/webex_centers/Collaboration-Help/TS-Help-Portal-Support-Utilities/CiscoWebexRemovalTool/CiscoWebexRemoveTool.exe"
    Invoke-WebRequest -UseBasicParsing $URL -OutFile "$Env:windir\NCentral\Cache\$Tool"
    Get-Process "Outlook" -ErrorAction SilentlyContinue | ForEach-Object { Stop-Process $_ -Force -ErrorAction SilentlyContinue }
    "$Env:windir\NCentral\Cache\$Tool /s" | cmd
}

#Region Script Start
If ((Test-Path "C:\Temp\Script Cache") -eq $False) { New-Item -ItemType directory -Path "C:\Temp\Script Cache" }
Invoke-WebRequest -UseBasicParsing "https://scripts.gabesville.com/Gabesville/Powershell-Scripts/raw/branch/main/Functions%20Scripts/Functions.ps1" -outfile "C:\Temp\Script Cache\Functions.ps1"
. "C:\Temp\Script Cache\Functions.ps1"

#Check to see if program is installed
$Applist = Get-Software | Sort-Object -Descending

If ($Applist | Where-Object { $_.DisplayName -eq $App_Name }) {
    Uninstall-App_WMIobject
    Start-Sleep 30
    If (Get-Software | Where-Object { $_.DisplayName -eq $App_Name }) {
        Uninstall-App
    }
    Uninstall-App3
    Test-Uninstall
}
Else { 
    Write-Output "$App_Name msi is not installed"
    Test-Uninstall
}
#Region Script End