BeforeAll {
    function Get-UserDirectory { param($userName, $fileName, $exitIfPathNotFound) }

    . (Join-Path $PSScriptRoot '..\Scripts\Features\Replace-StartMenu.ps1')
    . (Join-Path $PSScriptRoot '..\Scripts\Features\Telemetry-ScheduledTasks.ps1')
}

Describe 'Get-StartMenuUserNameFromPath' {
    It 'extracts a user name from a start-menu path and falls back for unknown paths' {
        Get-StartMenuUserNameFromPath -StartMenuBinFile 'C:\Users\Alice\AppData\Local\Packages\Start\start2.bin' | Should -Be 'Alice'
        Get-StartMenuUserNameFromPath -StartMenuBinFile 'C:\Temp\start2.bin' | Should -Be 'unknown'
    }

    It 'returns the latest current-user start-menu backup' {
        Mock Get-ChildItem {
            @(
                [PSCustomObject]@{ Name = 'Win11Debloat-StartBackup-20260101_120000.bak'; FullName = 'C:\Backups\older.bak' }
                [PSCustomObject]@{ Name = 'Win11Debloat-StartBackup-20260102_120000.bak'; FullName = 'C:\Backups\newer.bak' }
            )
        }

        Get-StartMenuBackupPath -Scope CurrentUser | Should -Be 'C:\Backups\newer.bak'
    }

    It 'returns the first available all-users start-menu backup' {
        $script:allUsersPath = 'C:\Users\*\AppData\Local\Packages\Start\LocalState'
        Mock Get-UserDirectory { $script:allUsersPath }
        Mock Get-ChildItem {
            param($Path)
            if ($Path -eq $script:allUsersPath) {
                return [PSCustomObject]@{ FullName = 'C:\Users\Alice\AppData\Local\Packages\Start\LocalState' }
            }

            return [PSCustomObject]@{ Name = 'Win11Debloat-StartBackup-20260103_120000.bak'; FullName = 'C:\Users\Alice\backup.bak' }
        }

        Get-StartMenuBackupPath -Scope AllUsers | Should -Be 'C:\Users\Alice\backup.bak'
    }

    It 'restores a start menu backup and preserves the replaced file' {
        $script:Params = @{}
        $startMenuFile = Join-Path $TestDrive 'start2.bin'
        $backupFile = Join-Path $TestDrive 'Win11Debloat-StartBackup-20260101_120000.bak'
        Set-Content -LiteralPath $startMenuFile -Value 'current'
        Set-Content -LiteralPath $backupFile -Value 'backup'

        $result = Restore-StartMenuFromBackup -StartMenuBinFile $startMenuFile -BackupFilePath $backupFile

        $result.Result | Should -BeTrue
        Get-Content -LiteralPath $startMenuFile -Raw | Should -Match 'backup'
        @(Get-ChildItem -LiteralPath $TestDrive -Filter 'Win11Debloat-StartRestore-*.bak').Count | Should -Be 1
    }

    It 'reports a missing backup without changing the start-menu file' {
        $script:Params = @{}
        $startMenuFile = Join-Path $TestDrive 'start2.bin'
        Set-Content -LiteralPath $startMenuFile -Value 'current'

        $result = Restore-StartMenuFromBackup -StartMenuBinFile $startMenuFile -BackupFilePath (Join-Path $TestDrive 'missing.bak')

        $result.Result | Should -BeFalse
        Get-Content -LiteralPath $startMenuFile -Raw | Should -Match 'current'
    }

    It 'delegates current-user restore to the common backup operation' {
        $script:Params = @{}
        Mock Restore-StartMenuFromBackup { [PSCustomObject]@{ Result = $true } }

        Restore-StartMenu -BackupFilePath 'C:\Backups\backup.bak' | Should -Not -BeNullOrEmpty
        Should -Invoke Restore-StartMenuFromBackup -Times 1 -Exactly -ParameterFilter { $BackupFilePath -eq 'C:\Backups\backup.bak' }
    }

    It 'restores every discovered user and removes the default-profile start menu' {
        $script:Params = @{}
        $script:allUsersStartPath = 'C:\Users\*\LocalState'
        $script:defaultStartPath = Join-Path $TestDrive 'DefaultLocalState'
        $defaultBin = Join-Path $script:defaultStartPath 'start2.bin'
        New-Item -ItemType Directory -Path $script:defaultStartPath | Out-Null
        Set-Content -LiteralPath $defaultBin -Value 'template'
        Mock Get-UserDirectory { param($userName) if ($userName -eq '*') { $script:allUsersStartPath } else { $script:defaultStartPath } }
        Mock Get-ChildItem { param($Path) if ($Path -eq $script:allUsersStartPath) { [PSCustomObject]@{ FullName = 'C:\Users\Alice\LocalState' } } }
        Mock Restore-StartMenuFromBackup { [PSCustomObject]@{ UserName = 'Alice'; Result = $true; Message = 'Restored' } }

        $result = @(Restore-StartMenuForAllUsers -BackupFilePath 'C:\Backups\backup.bak')

        $result.Count | Should -Be 2
        Should -Invoke Restore-StartMenuFromBackup -Times 1 -Exactly
        Test-Path -LiteralPath $defaultBin | Should -BeFalse
    }
}

Describe 'Get-TelemetryScheduledTasks' {
    It 'returns the expected telemetry task catalog' {
        $tasks = @(Get-TelemetryScheduledTasks)

        $tasks.Count | Should -Be 8
        @($tasks | ForEach-Object { "$($_.Path)|$($_.Name)" }) | Should -Be @(
            '\Microsoft\Windows\Application Experience\|Microsoft Compatibility Appraiser'
            '\Microsoft\Windows\Application Experience\|Microsoft Compatibility Appraiser Exp'
            '\Microsoft\Windows\Application Experience\|ProgramDataUpdater'
            '\Microsoft\Windows\Application Experience\|StartupAppTask'
            '\Microsoft\Windows\Customer Experience Improvement Program\|Consolidator'
            '\Microsoft\Windows\Customer Experience Improvement Program\|UsbCeip'
            '\Microsoft\Windows\DiskDiagnostic\|Microsoft-Windows-DiskDiagnosticDataCollector'
            '\Microsoft\Windows\Autochk\|Proxy'
        )
    }
}