$execpolicy = Get-ExecutionPolicy

Set-ExecutionPolicy Unrestricted

$installed = Get-ItemProperty 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*' | Where-Object {$_.UninstallString -match "MsiExec.exe"} | Select-Object DisplayName, DisplayVersion, UninstallString
$installed += Get-ItemProperty 'HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*' | Where-Object {$_.UninstallString -match "MsiExec.exe"} | Select-Object DisplayName, DisplayVersion, UninstallString

$apps = @("VMware Tools","VMware Horizon Agent","VMware Horizon Agent Direct-Connection Plugin","VMware Dynamic Environment Manager Enterprise","App Volumes Agent","Microsoft FSLogix Apps")

$uninstall = $installed | Where-Object {($_.DisplayName -in $apps)}

$uninstall

foreach ($app in $uninstall) {
    $uninstcmd = $app.UninstallString

    $uninstcmd = (($uninstcmd -split " ")[1] -replace "/I","/X") + " /qn REBOOT=ReallySuppress"
    $uninstprc = Start-Process msiexec.exe -ArgumentList $uninstcmd -NoNewWindow -PassThru -Wait
}

$check = Get-ItemProperty 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*' | Where-Object {$_.UninstallString -match "MsiExec.exe"} | Select-Object DisplayName, DisplayVersion, UninstallString
$check += Get-ItemProperty 'HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*' | Where-Object {$_.UninstallString -match "MsiExec.exe"} | Select-Object DisplayName, DisplayVersion, UninstallString

$check | Where-Object {($_.DisplayName -in $apps)} | Format-Table

Set-ExecutionPolicy $execpolicy

# get the current execution policy
$execpolicy = Get-ExecutionPolicy

Set-ExecutionPolicy Unrestricted

# location to the teams bootstrapper file
$bootstrapperpath = $PSScriptRoot + '\teamsbootstrapper.exe'

# allow execution of the teams bootstrapper file
Unblock-File -Path $bootstrapperpath

# check if teams is currently installed
$teamsversion = Get-AppxPackage -Name *MSTEAMS*

if ($teamsversion) {
    # if installed remove teams
    Write-Host 'Uninstalling Microsoft Teams version ' $teamsversion.version -ForegroundColor Red

    Start-Process -FilePath $bootstrapperpath -ArgumentList '-x' -Wait
    $teamsversion = ""
}

# location to the teams msix file
$msixpath = $PSScriptRoot + '\MSTeams-x64.msix'

# configure installation parameters
$args = '-p -o "' + $msixpath + '"'

# install teams
Start-Process -FilePath $bootstrapperpath -ArgumentList $args -Wait

# registry path
$registrypath = 'HKLM:\SOFTWARE\Microsoft\Teams'

# disable teams autoupdate 
if (!(Test-Path $registryPath)) {
    New-Item -Path $registrypath -Force | Out-Null
    New-ItemProperty $registrypath -Name 'disableAutoUpdate' -Value 1 -PropertyType DWord -Force | Out-Null
} else {
    if (!(Get-ItemProperty $registrypath -Name 'disableAutoUpdate')) {
        New-ItemProperty $registrypath -Name 'disableAutoUpdate' -Value 1 -PropertyType DWord -Force | Out-Null
    } else {
        Set-ItemProperty $registrypath -Name 'disableAutoUpdate' -Value 1 -PropertyType DWord -Force | Out-Null
    }
}

# check if teams installed correctly
$teamsversion = Get-AppxPackage -Name *MSTEAMS*

if ($teamsversion) {
    Write-Host 'Installed Microsoft Teams version ' $teamsversion.version -ForegroundColor Green
}

# set execution policy back to original value
Set-ExecutionPolicy $execpolicy