<#
Author: Gabe Kerntke
Date: 02-20-2024

.Synopsis
Script installs Webex silently on machines that do not already have it. Script copies the installer from the probe and deletes the installer once the install is finsihed.

.Modified
2024-02-20 (GabeK) - Original script created
2025-06-30 (GabeK) - Updated to use functions script
#>
    
[CmdletBinding()]
Param(
    [Parameter(Mandatory = $false)]
    $App_Name = "Webex",
    [Parameter(Mandatory = $false)]
    $File_Name_Prefix = "Webex-x64",
    [Parameter(Mandatory = $false)]
    $File_Name_Extension = "msi",
    [Parameter(Mandatory = $false)]
    $Install_Parameters = "ACCEPT_EULA=TRUE ALLUSERS=1 /qn",
    [Parameter(Mandatory = $false)]
    $EPCache_Folder = "3rd Party Patches\$App_Name",
    [Parameter(Mandatory = $false)]
    $Version_URL = "https://help.webex.com/en-us/article/mqkve8/Webex-App-%7C-Release-notes"
)

#Download the HTML content
$html = (New-Object System.Net.WebClient).DownloadString($Version_URL)
	
# Split the content on ">" and "<" characters to extract the text content
$html_split = $html.Split([char[]]@(">", "<"), [StringSplitOptions]::RemoveEmptyEntries) | Select-Object -First 900 
$Sort = $html_split -like "Windows*"
	
# Filter out only the rows containing version numbers
$Versions = $Sort | Where-Object { $_ -match "\d+\.\d+\.\d+" } | ForEach-Object { $_ -replace "&#xA0;", "" }
$Online_Version = $Versions -replace "[^\d*\.?/\d*]" , '' -replace "/" , ''
$DownloadURL = "https://binaries.webex.com/WebexTeamsDesktop-Windows-Gold/Webex_en.msi"
$File_Name = "$File_Name_Prefix-$Online_Version.$File_Name_Extension"

#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 ($Applist.DisplayName -like "*$App_Name*") { 

    #Get currently installed version 
    $Local_Version = Get-Software | Where-Object { $_.DisplayName -like "*$App_Name*" } | Select-Object -ExpandProperty DisplayVersion
    
    #Comparing version already installed to what is online
    If ($Local_Version -lt $Online_Version) {
        Test-Probe_Online
        Close-App
        Install-App
    }
    Else { Write-Host "$App_Name already on latest version (Installed version: $Local_Version)" }
}

Else {
    Test-Probe_Online
    Install-App
}
#Region Script End