<#
Author: Gabe Kerntke
Date: 05-30-2024

.Synopsis
Script checks to see if GoToMeeting is installed, if installed it will uninstall

.Modified
2024-02-21 (GabeK) - Original script created

#>

######################
###    Variables   ###
######################
$Name = "GoToMeeting"

######################
###    Functions   ###
######################

#Function checks for 32 or 64 bit processor and then pulls list of applications accordingly
Function Get-Software ($CPU = $ENV:PROCESSOR_ARCHITECTURE) {
    If ($CPU -eq 'AMD64') { 
        $64bit = Get-ItemProperty HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\* 
        $32bit = Get-ItemProperty HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*
        $32bit + $64bit
    } 
    Else { Get-ItemProperty HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\* }  
}

#Function to uninstall via WMIobject (control panel)
Function UninstallGoToMeeting1 {
    $Uninstall = Get-WmiObject Win32_Product -filter "name like '%$Name%'" | ForEach-Object { $_.Uninstall() }
    $Value = $Uninstall | Select-Object -ExpandProperty ReturnValue
    
    If ($Value -eq "0") {
        Write-Host "$Name uninstalled successfully"
        UninstallGoToMeeting5
    }
    else {
        UninstallGoToMeeting2
    }
}

Function UninstallGoToMeeting3 {
    $UninstallString3 = $Applist | Select-Object -ExpandProperty UninstallString | Where-Object ($_.UninstallString -like "*MsiExec*")
    $A = $UninstallString3 -replace "/I", "/X"
    $A + " /qn" | cmd
    If ($Applist.DisplayName -like "*$Name*") {
        UninstallGoToMeeting4
    }
    Else {
        Write-Host "$Name uninstalled successfully"
    }
}
Function UninstallGoToMeeting2 {    
    $UninstallString2 = $Applist | Select-Object -ExpandProperty UninstallString | Where-Object ($_.UninstallString -like "*C:\*")
    $UninstallString2 + " -silent" | cmd
    If ($Applist.DisplayName -like "*$Name*") {
        UninstallGoToMeeting3
    }
    Else {
        Write-Host "$Name uninstalled successfully"
    }
}    

Function UninstallGoToMeeting4 {    
    $UninstallString4 = $Applist | Select-Object -ExpandProperty PSPath
    $B = $UninstallString4 -replace "Microsoft.PowerShell.Core", ""
    $C = $B.Substring(1)
    Remove-Item -Path $C -Force -Verbose
    
    If ($Applist.DisplayName -like "*$Name*") {
        Write-Host "$Name uninstall failed"
        UninstallGoToMeeting5
    }
    Else {
        Write-Host "$Name uninstalled successfully"
    }
}

Function UninstallGoToMeeting5 {  
    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 { $_.Name -like "*gotomeeting*" } | Remove-Item -Force -Verbose -Recurse
        Get-ChildItem HKU:$Reg | Where-Object { $_.Name -like "*G2M*" } | Remove-Item -Force -Verbose -Recurse
    }
    DeleteFolder
    Write-Host "$Name removed successfully"
}

Function DeleteFolder {
    $Path = "C:\Program Files (x86)\GoToMeeting"
    If (Test-Path $Path) {
        Remove-Item -Path $Path -Recurse -Force -Verbose
    }
}

######################
###  Script start  ###
######################

$Applist = Get-Software | Where-Object { $_.DisplayName -like "*$Name*" }
If ($Applist.DisplayName -like "*$Name*") {
    UninstallGoToMeeting1
}
Else {
    Write-Host "$Name is not installed"
    UninstallGoToMeeting5
}