[CmdletBinding(SupportsShouldProcess)]param(
    [Parameter(ParameterSetName="On",Mandatory)]
    [switch]$On,
    [Parameter(ParameterSetName="Off",Mandatory)]
    [switch]$Off,
    [Parameter(ParameterSetName="Toggle",Mandatory)]
    [switch]$Toggle,
    [switch]$Recurse,
    [int]$Depth=1,
    [Parameter(ParameterSetName="On",Position = 0, ValueFromRemainingArguments)]
    [Parameter(ParameterSetName="Off",Position = 0, ValueFromRemainingArguments)]
    [Parameter(ParameterSetName="Toggle",Position = 0, ValueFromRemainingArguments)]
    [Parameter(ParameterSetName="Query",Position = 0, ValueFromRemainingArguments)]
    [ArgumentCompleter({Invoke-Command -ScriptBlock $_DockerComposeDirsCompleter -ArgumentList $args})]
    [string[]]$ProjectPath
)

if( -not $ProjectPath ) { $ProjectPath=@($PWD) }

$local:ext = ".yml"
$local:dcPathList = @()
$ProjectPath | ForEach-Object {
        while( $true ) {
            if( (Test-Path (Join-Path $_ "docker-compose$ext")) -and -not $Recurse ) {
                $dcPathList += Resolve-Path $_
            } elseif( $Recurse ) {
                $local:gciParams = [ordered]@{
                    Recurse = $true
                }
                if( $Depth ) {
                    $gciParams.Depth = $Depth
                }
                $dcPathList += Get-ChildItem -Path $_ -Include "docker-compose$ext" @gciParams |
                    Select-Object -ExpandProperty Directory
            }
            if( ($dcPathList -and -not $Recure) -or $ext -eq '.yaml' ) { 
                break
            }
            $ext = '.yaml'
        }
    }
if( -not $dcPathList ) { return }

$local:QueryOnly = -not $On -and -not $Off -and -not $Toggle

$dcPathList | ForEach-Object {
    $local:name = "$_"
    $local:c = Get-Content -Head 3 (Join-Path $_ "docker-compose$ext")
    $local:r = [ordered]@{
        Dir = Split-Path -Leaf $_
        State = ""
        Version = ($c[0] -replace 'Version: ','' -replace "[`"']",'').Trim()
        Stack = "?"
    }
    if( $c[1] -match "^# stack(?:\W*): ?(\w+)\W*$" ) { $r.Stack = $matches[1] }
    if( $c[2] -match "^# ports prefix: ([\dx#]{4,5})" ) { $r.Stack = $matches[1] + " | " + $r.Stack }
     
    if( $PWD -like $name ) {
        $name = Split-Path -Leaf $name
    } else {
        $name = $($name.Replace($PWD.Path,'').Substring(1))
    }

    $local:NoAutoPath = $(Join-Path $_ '.noauto.all')
    $local:NoAutoOffPath = "${NoAutoPath}.off"
    $local:IsOff = Test-Path $NoAutoPath
    $local:IsExplicitOn = Test-Path $NoAutoOffPath

    $local:SetOff = $Off -or ($Toggle -and -not $IsOff)
    $local:SetOn  = $On  -or ($Toggle -and $IsOff)
    if( ($QueryOnly -and $IsOff) -or (-not $QueryOnly -and $SetOff) ) {
        if( -not $QueryOnly -and $IsExplicitOn ) {
            Move-Item $NoAutoOffPath $NoAutoPath
         } elseif( -not $QueryOnly -and -not $IsOff ) {
             $null = New-Item -ItemType File -Path $NoAutoPath -Value ""
        }
  #     Write-Host -ForegroundColor Magenta -NoNewline "Off"
        $r.State = "Off"
    } elseif( ($QueryOnly -and -not $IsOff) -or (-not $QueryOnly -and $SetOn) ) {
        if( -not $QueryOnly -and $IsOff ) {
            Move-Item $NoAutoPath $NoAutoOffPath
        }
  #     Write-Host -ForegroundColor Green -NoNewline "On "
        $r.State = "On"
    }
  # Write-Host -ForegroundColor Cyan " $name"
 
    [PSCustomObject]$r
}