# ==========================================================
# Device-Wide Chrome Cleanup Script
# ==========================================================
# Use Case:
# Cleans Chrome cache data for ALL users on the system
#
# Default Cleanup:
# - Cache
# - Code Cache
# - GPUCache
#
# Optional Cleanup (Opt-In):
# - Cookies
# - History
# - Sessions
#
# Arguments:
# ExcludedUsers=user1,user2
# ExplicitTargets=Cookies,History,Sessions
#
# Examples:
# .\ChromeCleanup.ps1
#
# .\ChromeCleanup.ps1 `
# ExcludedUsers=Admin,TestUser `
# ExplicitTargets=Cookies,History
#
# WARNING:
# ExplicitTargets may:
# - Log users out from websites
# - Remove browsing history
# - Remove open sessions/tabs
# ==========================================================

param(
    [string[]]$ExcludedUsers = @(
        "Public",
        "Default",
        "Default User",
        "All Users"
    ),
    [string[]]$ExplicitTargets = @()
)
# ----------------------------------------------------------
# Create Event Log Source
# ----------------------------------------------------------
$EventSource = "ChromeCleanupScript"
try {
    if (-not [System.Diagnostics.EventLog]::SourceExists($EventSource)) {
        New-EventLog `
            -LogName Application `
            -Source $EventSource
    }
}
catch {
    Write-Host "[WARNING] Could not create Windows Event Log source."
}
# ----------------------------------------------------------
# Stop Chrome Processes
# ----------------------------------------------------------
Write-Host "`n[INFO] Closing Google Chrome..."
Get-Process chrome -ErrorAction SilentlyContinue | Stop-Process -Force
Start-Sleep -Seconds 3
# ----------------------------------------------------------
# Get All User Profiles
# ----------------------------------------------------------
$UserProfiles = Get-ChildItem "C:\Users" -Directory |
Where-Object {
    $_.Name -notin $ExcludedUsers
}
if ($UserProfiles.Count -eq 0) {
    Write-Host "[ERROR] No user profiles found."
    exit
}
# ----------------------------------------------------------
# Process Each User
# ----------------------------------------------------------
foreach ($User in $UserProfiles) {
    $ChromePath = "$($User.FullName)\AppData\Local\Google\Chrome\User Data\Default"
    if (!(Test-Path $ChromePath)) {
        Write-Host "`n[INFO] Chrome profile not found for user: $($User.Name)"
        continue
    }
    Write-Host "`n========================================="
    Write-Host " Processing User: $($User.Name)"
    Write-Host "========================================="
    # ------------------------------------------------------
    # Backup Location
    # ------------------------------------------------------
    $BackupRoot = "C:\ChromeCleanupBackup\$($User.Name)"
    if (!(Test-Path $BackupRoot)) {
        New-Item `
            -Path $BackupRoot `
            -ItemType Directory `
            -Force | Out-Null

    }
    # ------------------------------------------------------
    # Default Targets
    # ------------------------------------------------------
    $Targets = @(
        "$ChromePath\Cache",
        "$ChromePath\Code Cache",
        "$ChromePath\GPUCache"
    )
    # ------------------------------------------------------
    # Optional Explicit Targets
    # ------------------------------------------------------
    foreach ($TargetName in $ExplicitTargets) {
        switch ($TargetName.Trim().ToLower()) {
            "cookies" {
                $Targets += "$ChromePath\Cookies"
            }
            "history" {
                $Targets += "$ChromePath\History"
                $Targets += "$ChromePath\Visited Links"
                $Targets += "$ChromePath\Web Data"
            }
            "sessions" {
                $Targets += "$ChromePath\Sessions"
            }
            default {
    throw "[ERROR] Unsupported ExplicitTarget: $TargetName"
}
        }
    }
    # ------------------------------------------------------
    # Cleanup
    # ------------------------------------------------------
    foreach ($Target in $Targets) {
        if (Test-Path $Target) {
            try {
                # --------------------------------------------------
                # Backup Before Deletion
                # --------------------------------------------------
                $BackupPath = Join-Path `
                    $BackupRoot `
                    (Split-Path $Target -Leaf)

                Copy-Item `
                    -Path $Target `
                    -Destination $BackupPath `
                    -Recurse `
                    -Force `
                    -ErrorAction Stop

                Write-Host "[BACKUP] Backup created: $BackupPath"

                $Item = Get-Item `
                    $Target `
                    -ErrorAction Stop

                # --------------------------------------------------
# Block Junctions / Symbolic Links
# --------------------------------------------------
if ($Item.Attributes -band [System.IO.FileAttributes]::ReparsePoint) {
    throw "[ERROR] Reparse point detected: $Target"
}
# --------------------------------------------------
# Clear Folder Contents
# --------------------------------------------------
if ($Item -is [System.IO.DirectoryInfo]) {
    Get-ChildItem `
        -Path $Target `
        -Force `
        -ErrorAction Stop |
    Where-Object {
        -not ($_.Attributes -band [System.IO.FileAttributes]::ReparsePoint)
    } |
    Remove-Item `
        -Recurse `
        -Force `
        -ErrorAction Stop
}
else {
    Remove-Item `
        $Target `
        -Force `
        -ErrorAction Stop
}
                Write-Host "[SUCCESS] Cleared: $Target"
                # --------------------------------------------------
                # Windows Event Log
                # --------------------------------------------------
                try {
                    Write-EventLog `
                        -LogName Application `
                        -Source $EventSource `
                        -EntryType Information `
                        -EventId 55001 `
                        -Message "Deleted Chrome data: $Target for user $($User.Name)"
                }
                catch {
                    Write-Host "[WARNING] Failed to write Event Log."
                }
            }
            catch {
                Write-Host "[WARNING] Could not clear: $Target"
                try {
                    Write-EventLog `
                        -LogName Application `
                        -Source $EventSource `
                        -EntryType Warning `
                        -EventId 55002 `
                        -Message "Failed to delete Chrome data: $Target for user $($User.Name)"
                }
                catch {
                    Write-Host "[WARNING] Failed to write failure Event Log."
                }
            }
        }else{
            Write-Host "[INFO] Target not found, skipping: $Target"
        }
    }
}
# ----------------------------------------------------------
# Completion
# ----------------------------------------------------------
Write-Host "`n========================================="
Write-Host " Device-Wide Chrome Cleanup Completed"
Write-Host "========================================="
# ----------------------------------------------------------
# Optional: Restart Chrome
# ----------------------------------------------------------
try {
    Start-Process "chrome.exe"
    Write-Host "[INFO] Chrome restarted."
}
catch {
    Write-Host "[ERROR] Chrome could not be started."

}