#Requires -Version 5.1
<#
.SYNOPSIS
    Pester v5 tests for scripts/Remove-BuildVM.ps1
#>

BeforeAll {
    $script:ScriptPath = Join-Path $PSScriptRoot '..\scripts\Remove-BuildVM.ps1'

    # Fake vmrun: accepts any args, always exits 0 (best-effort ops don't need to fail here)
    $script:FakeVmrun = Join-Path $env:TEMP "fake-vmrun-remove-$PID.cmd"
    Set-Content $script:FakeVmrun -Value '@echo off & exit /b 0'
}

AfterAll {
    Remove-Item $script:FakeVmrun -Force -ErrorAction SilentlyContinue
}

# ─────────────────────────────────────────────────────────────────────────────
Describe 'Remove-BuildVM — missing VMX' {
    It 'returns without error when VMX does not exist' {
        { & $script:ScriptPath -VMPath 'C:\DoesNotExist\clone.vmx' -VmrunPath $script:FakeVmrun } |
            Should -Not -Throw
    }

    It 'removes partial clone directory even when VMX is missing' {
        $partialDir = Join-Path $env:TEMP "partial-clone-$PID"
        New-Item -ItemType Directory -Path $partialDir -Force | Out-Null
        $fakeMissingVmx = Join-Path $partialDir 'missing.vmx'

        & $script:ScriptPath -VMPath $fakeMissingVmx -VmrunPath $script:FakeVmrun

        Test-Path $partialDir | Should -Be $false
    }
}

# ─────────────────────────────────────────────────────────────────────────────
Describe 'Remove-BuildVM — WhatIf' {
    It 'does not remove clone directory when -WhatIf is passed' {
        $cloneDir = Join-Path $env:TEMP "whatif-clone-$PID"
        $cloneVmx = Join-Path $cloneDir 'whatif-clone.vmx'
        New-Item -ItemType Directory -Path $cloneDir -Force | Out-Null
        Set-Content $cloneVmx -Value 'config.version = "8"'

        & $script:ScriptPath -VMPath $cloneVmx -VmrunPath $script:FakeVmrun -WhatIf

        Test-Path $cloneDir | Should -Be $true

        Remove-Item $cloneDir -Recurse -Force -ErrorAction SilentlyContinue
    }
}

# ─────────────────────────────────────────────────────────────────────────────
Describe 'Remove-BuildVM — successful destroy' {
    It 'removes the clone directory when VMX exists and vmrun succeeds' {
        $cloneDir = Join-Path $env:TEMP "live-clone-$PID"
        $cloneVmx = Join-Path $cloneDir 'live-clone.vmx'
        New-Item -ItemType Directory -Path $cloneDir -Force | Out-Null
        Set-Content $cloneVmx -Value 'config.version = "8"'

        & $script:ScriptPath `
            -VMPath                $cloneVmx `
            -VmrunPath             $script:FakeVmrun `
            -GracefulTimeoutSeconds 1   # short timeout for test speed

        Test-Path $cloneDir | Should -Be $false
    }
}