# ==========================================================
# Clear Microsoft Teams Cache (Device Specific)
# Supports: New Teams
# Clears cache for ALL user profiles in this device
# ==========================================================

Write-Host "============================================="
Write-Host "   Microsoft Teams Cache Cleanup Started"
Write-Host "============================================="
# ----------------------------------------------------------
# Stop Teams Processes
# ----------------------------------------------------------
Write-Host "`n[INFO] Closing Microsoft Teams..."
# Get Teams process
$teamsProcess = Get-CimInstance Win32_Process |
Where-Object {
    $_.Name -eq "ms-teams.exe"
}
if ($teamsProcess) {
    Write-Host "`n[INFO] Teams process found"
    # Get child processes of Teams
    $childProcesses = Get-CimInstance Win32_Process |
    Where-Object {
        $_.ParentProcessId -eq $teamsProcess.ProcessId
    }
    foreach ($child in $childProcesses) {
        Write-Host "[INFO] Stopping Child Process: $($child.Name)"
        try {
            Stop-Process -Id $child.ProcessId -Force -ErrorAction Stop
            Write-Host "[SUCCESS] Stopped: $($child.Name)"
        }
        catch {
            Write-Host "[ERROR] Failed: $($child.Name)"
        }
    }
    # Stop main Teams process
    try {
        Stop-Process -Id $teamsProcess.ProcessId -Force -ErrorAction Stop
        Write-Host "`n[SUCCESS] Microsoft Teams stopped"
    }
    catch {
        Write-Host "`n[ERROR] Failed to stop Teams"
    }
}
else {
    Write-Host "`n[INFO] Microsoft Teams is not running"
}
Start-Sleep -Seconds 3
# ----------------------------------------------------------
# Get All User Profiles
# ----------------------------------------------------------
$ExcludedUsers = @(
    "Public",
    "Default",
    "Default User",
    "All Users"
)
# Add users passed through script arguments
for ($i = 0; $i -lt $args.Count; $i++) {
    if (![string]::IsNullOrWhiteSpace($args[$i])) {
        $ExcludedUsers += $args[$i]
    }
}
# Get profiles excluding specified users
$UserProfiles = Get-ChildItem "C:\Users" -Directory |
Where-Object {
    $_.Name -notin $ExcludedUsers
}
if ($UserProfiles.Count -eq 0) {
    Write-Host "[ERROR] No user profiles found."
    exit
}
# ----------------------------------------------------------
# Function to Clear Folder Contents
# ----------------------------------------------------------
function Clear-TeamsCache {
    param (
        [string[]]$Paths
    )
    foreach ($path in $Paths) {
        if (Test-Path $path) {
            $item = Get-Item $path -Force -ErrorAction SilentlyContinue
            if ($item.Attributes -band [System.IO.FileAttributes]::ReparsePoint) {
                Write-Host "[SKIPPED] Reparse point (symlink/junction): $path"
                continue
            }
            try {
                Write-Host "[INFO] Clearing: $path"
                Get-ChildItem -Path $path -Force -ErrorAction SilentlyContinue |
                    Where-Object {
                        -not ($_.Attributes -band [System.IO.FileAttributes]::ReparsePoint)
                    } |
                    Remove-Item -Recurse -Force -ErrorAction SilentlyContinue
                Write-Host "[SUCCESS] Cleared"
            } catch {
                Write-Host "[ERROR] Failed to clear: $path"
            }
        } else {
            Write-Host "[INFO] Path not found: $path"
        }
    }
}
# ----------------------------------------------------------
# Clear Teams Cache For Each User
# ----------------------------------------------------------
foreach ($profile in $UserProfiles) {
    Write-Host "`n============================================"
    Write-Host " Processing User: $($profile.Name)"
    Write-Host "============================================="
    $basePath = $profile.FullName
    $newTeamsPaths = @(
        "$basePath\AppData\Local\Packages\MSTeams_8wekyb3d8bbwe\LocalCache",
        "$basePath\AppData\Local\Packages\MSTeams_8wekyb3d8bbwe\LocalState",
        "$basePath\AppData\Local\Packages\MSTeams_8wekyb3d8bbwe\TempState",
        "$basePath\AppData\Local\Microsoft\Teams\Cache",
        "$basePath\AppData\Local\Microsoft\Teams\GPUCache",
        "$basePath\AppData\Local\Microsoft\Teams\IndexedDB",
        "$basePath\AppData\Local\Microsoft\Teams\Local Storage",
        "$basePath\AppData\Local\Microsoft\Teams\tmp"
    )
    Clear-TeamsCache -Paths $newTeamsPaths
}
# ----------------------------------------------------------
# Restart Teams (Optional)
# ----------------------------------------------------------
try {
    Write-Host "`n[INFO] Restarting Microsoft Teams..."
    Start-Process "ms-teams.exe"
    Write-Host "[SUCCESS] Microsoft Teams restarted."
}
catch {
    Write-Host "[ERROR] Microsoft Teams executable not found."
    Write-Host "[INFO] Please start Microsoft Teams manually."
}
# ----------------------------------------------------------
# Completion Message
# ----------------------------------------------------------
Write-Host "`n============================================="
Write-Host " Microsoft Teams Cache Cleanup Completed"
Write-Host "============================================="