param(
    [Parameter(Mandatory = $true)]
    [string]$Name
)

$ErrorActionPreference = "Stop"

$workspace = (Get-Location).ProviderPath
$generatedRoot = "C:\Users\ekeer\.codex\generated_images\019f26b6-8f7e-7a50-943f-f9aa9014c335"
$python = "C:\Users\ekeer\AppData\Local\Programs\KiCad\10.0\bin\python.exe"
$removeScript = "C:\Users\ekeer\.codex\skills\.system\imagegen\scripts\remove_chroma_key.py"

if ($Name -notmatch '^isabel_body_bikini_[A-Za-z0-9_]+\.png$') {
    throw "Unexpected Isabel bikini filename: $Name"
}

$latest = Get-ChildItem -LiteralPath $generatedRoot -Recurse -File -Filter *.png |
    Sort-Object LastWriteTime -Descending |
    Select-Object -First 1

if (-not $latest) {
    throw "No generated PNG found under $generatedRoot"
}

$outPath = Join-Path $workspace (Join-Path "Isabel\Variations\Bikini\Images" $Name)
$chromaPath = Join-Path $workspace (Join-Path "tmp\imagegen" "$Name.chromakey.png")

New-Item -ItemType Directory -Force -Path (Split-Path -Parent $outPath) | Out-Null
New-Item -ItemType Directory -Force -Path (Split-Path -Parent $chromaPath) | Out-Null

Copy-Item -LiteralPath $latest.FullName -Destination $chromaPath -Force

& $python $removeScript `
    --input $chromaPath `
    --out $outPath `
    --auto-key border `
    --soft-matte `
    --transparent-threshold 12 `
    --opaque-threshold 220 `
    --despill

Add-Type -AssemblyName System.Drawing
$bmp = [System.Drawing.Bitmap]::FromFile($outPath)
try {
    [PSCustomObject]@{
        Source = $latest.FullName
        Chroma = $chromaPath
        Out = $outPath
        Width = $bmp.Width
        Height = $bmp.Height
        PixelFormat = $bmp.PixelFormat
        CornerAlpha = (@(
            $bmp.GetPixel(0, 0).A,
            $bmp.GetPixel($bmp.Width - 1, 0).A,
            $bmp.GetPixel(0, $bmp.Height - 1).A,
            $bmp.GetPixel($bmp.Width - 1, $bmp.Height - 1).A
        ) -join ",")
    }
}
finally {
    $bmp.Dispose()
}