. $PSScriptRoot\..\..\Load-PesterModules.ps1
$here = Split-Path -Parent $MyInvocation.MyCommand.Path
$sut = (Split-Path -Leaf $MyInvocation.MyCommand.Path) -replace '\.tests\.', '.'
$functionPath = Join-Path -Path $here -ChildPath $sut
Write-Host "Overriding SUT: $functionPath"
Import-Module $functionPath -Force

Describe "Remove-FileSystemItem" {
    ## https://pester.dev/docs/usage/testdrive/
    $existingOrbPath = (Join-Path $TestDrive orb)

    $garbageFileToBeGone = (Join-Path $existingOrbPath "letmebegone.txt")
    $log4netFileToBeRemain = (Join-Path $existingOrbPath "log4net.config")
    $symlinkActualFolder = (Join-Path $TestDrive "SymlinkSource")
    $symlinkTargetFolder = (Join-Path $existingOrbPath "SymlinkTarget")
    $symlinkDeepTargetFolder = (Join-Path $symlinkTargetFolder "DeepFolder")
    $symlinkActualFile = (Join-Path $symlinkActualFolder "symlinkedfile.txt")

    Context "Basic workflow test with no confirmation level" {
        ## Suppress Prompting
        $ConfirmPreference = [System.Management.Automation.ConfirmImpact]::None

        ##ensure our test files exist as expected.

        New-Item -Path $garbageFileToBeGone -ItemType File -Value "I should be gone after this test" -Force

        Remove-FileSystemItem $existingOrbPath -Recurse

        It "The file should not be there, the folder should have been deleted" {
            (Test-Path $garbageFileToBeGone) | Should -Be $false
        }
    }

    Context "Basic workflow test with force" {
        ##ensure our test files exist as expected.

        New-Item -Path $garbageFileToBeGone -ItemType File -Value "I should be gone after this test" -Force

        Remove-FileSystemItem $existingOrbPath -Force

        It "The file should not be there, the folder should have been deleted" {
            (Test-Path $garbageFileToBeGone) | Should -Be $false
        }
    }

    Context "Leaves log4net.config workflow test" {
        ##ensure our test files exist as expected.
        New-Item -Path $garbageFileToBeGone -ItemType File -Value "I should be gone after this test" -Force
        New-Item -Path $log4netFileToBeRemain -ItemType File -Value "I should stick around" -Force

        Remove-FileSystemItem $existingOrbPath -Force -Exclude "log4net.config"

        It "The log4net file should not be deleted" {
            (Test-Path $log4netFileToBeRemain) | Should -Be $true
            Write-Debug (Get-Content $log4netFileToBeRemain)
        }

        It "The file should not be there, the contents of the folder should have been deleted" {
            (Test-Path $garbageFileToBeGone) | Should -Be $false
        }
    }

    Context "Removes Symlinked files test" {
        New-Item -Path $symlinkActualFolder -ItemType Directory -Force
        New-Item -Path $symlinkActualFile -ItemType File -Value "I should be gone after this test" -Force
        $symlinkTargetFile = (Join-Path $symlinkTargetFolder "symlinkedfile.txt")

        New-Symlink -Path $symlinkActualFile -Destination $symlinkTargetFolder
        Remove-FileSystemItem $symlinkTargetFile -Force

        It "The symlinked file should be gone but the actual file still present" {
            (Test-Path $symlinkTargetFile) | Should -Be $false
            (Test-Path $symlinkActualFile) | Should -Be $true
        }

    }

    Context "Removes Symlinked folders test" {
        New-Item -Path $symlinkActualFolder -ItemType Directory -Force
        New-Item -Path $symlinkActualFile -ItemType File -Value "I should be gone after this test" -Force

        New-Symlink -Path $symlinkActualFolder -Destination $symlinkTargetFolder
        Remove-FileSystemItem $symlinkTargetFolder  -Force

        It "The symlinked folder should be gone but the actual file still present" {
            (Test-Path $symlinkTargetFolder) | Should -Be $false
            (Test-Path $symlinkActualFolder) | Should -Be $true
            (Test-Path $symlinkActualFile) | Should -Be $true
        }
    }

    Context "Removes Deep Symlinked folders recursion test" {
        New-Item -Path $symlinkActualFolder -ItemType Directory -Force
        New-Item -Path $symlinkActualFile -ItemType File -Value "I should be gone after this test" -Force

        New-Symlink -Path $symlinkActualFolder -Destination $symlinkDeepTargetFolder
        Remove-FileSystemItem $symlinkTargetFolder  -Force

        It "The symlinked folder should be gone but the actual file still present" {
            (Test-Path $symlinkTargetFolder) | Should -Be $false
            (Test-Path $symlinkDeepTargetFolder) | Should -Be $false
            (Test-Path $symlinkActualFolder) | Should -Be $true
            (Test-Path $symlinkActualFile) | Should -Be $true
        }
    }
}