#Requires -Version 7.4
# SCCM/MECM Client Plugin (Mock)

#region Helper Functions

function Get-SCCMClientInfo {
    # Mock: Check if SCCM client is installed
    $ccmPath = 'HKLM:\SOFTWARE\Microsoft\CCM'
    # Mock return - in production would check registry
    @{
        Installed = $true
        Version = '5.0.9088.1000'
        SiteCode = 'PS1'
        ManagementPoint = 'sccm.contoso.com'
    }
}

function Get-SCCMCacheInfo {
    # Mock: Get CCM cache location and size
    @{
        Location = 'C:\Windows\ccmcache'
        Size = 5120  # MB
        ItemCount = 42
    }
}

function Clear-SCCMClientCache {
    Write-vSEALLog "Clearing SCCM client cache..."
    $cache = Get-SCCMCacheInfo
    Write-vSEALLog "Cache location: $($cache.Location), Items: $($cache.ItemCount)"
    # Mock: In production, would use COM object to clear cache
    # $CCM = New-Object -ComObject UIResource.UIResourceMgr
    # $CCM.GetCacheInfo().GetCacheElements() | ForEach-Object { $CCM.GetCacheInfo().DeleteCacheElement($_.CacheElementID) }
    Write-vSEALLog "SCCM cache cleared (mock)"
}

#endregion

#region Plugin Contract

function Get-PluginConfigSchema {
    @{
        clear_cache = @{
            Type        = 'bool'
            Default     = $true
            Required    = $false
            Description = 'Clear SCCM client cache during seal'
        }
        service_stop_timeout = @{
            Type        = 'int'
            Default     = 120
            Required    = $false
            Description = 'Seconds to wait for ccmexec to stop (SCCM often needs longer)'
        }
    }
}

function Test-Applicable {
    param($Globals)

    $client = Get-SCCMClientInfo
    if (-not $client.Installed) {
        return @{ Applicable = $false; Reason = 'SCCM client not installed' }
    }

    return @{ Applicable = $true; Reason = $null }
}

function Get-PlannedActions {
    param($Config, $Globals, $Phase)

    $actions = @()

    if ($Phase -eq 'Seal') {
        $actions += 'Stop SCCM client service (ccmexec)'
        if ($Config.clear_cache) {
            $actions += 'Clear SCCM client cache'
        }
        $actions += 'Remove hardware inventory history'
    }
    elseif ($Phase -eq 'Engage') {
        $actions += 'Start SCCM client service'
        $actions += 'Trigger machine policy refresh'
        $actions += 'Trigger hardware inventory'
    }

    return $actions
}

function Invoke-Seal {
    param($Config, $Globals)

    $client = Get-SCCMClientInfo
    Write-vSEALLog "SCCM Client version: $($client.Version), Site: $($client.SiteCode)"

    # Stop SCCM service with extended timeout
    $timeout = $Config.service_stop_timeout ?? 120
    Write-vSEALLog "Stopping ccmexec service (timeout: ${timeout}s)..."
    # Mock: Stop-vSEALService -Name 'ccmexec' -Timeout $timeout
    Write-vSEALLog "ccmexec service stopped (mock)"

    # Clear cache if configured
    if ($Config.clear_cache) {
        Clear-SCCMClientCache
    }

    # Remove hardware inventory history
    Write-vSEALLog "Removing hardware inventory history..."
    # Mock: Remove-Item -Path 'C:\Windows\CCM\Inventory\*' -Recurse -Force
    Write-vSEALLog "Hardware inventory history removed (mock)"
}

function Invoke-Engage {
    param($Config, $Globals)

    # Start SCCM service
    Write-vSEALLog "Starting ccmexec service..."
    # Mock: Start-vSEALService -Name 'ccmexec'
    Write-vSEALLog "ccmexec service started (mock)"

    # Trigger policy refresh
    Write-vSEALLog "Triggering machine policy refresh..."
    # Mock: Invoke-CimMethod -Namespace 'root\ccm' -ClassName 'SMS_Client' -MethodName 'TriggerSchedule' -Arguments @{sScheduleID='{00000000-0000-0000-0000-000000000021}'}
    Write-vSEALLog "Machine policy refresh triggered (mock)"

    # Trigger hardware inventory
    Write-vSEALLog "Triggering hardware inventory..."
    # Mock: Invoke-CimMethod for hardware inventory schedule
    Write-vSEALLog "Hardware inventory triggered (mock)"
}

#endregion
