$ErrorActionPreference = "Stop"
Add-Type -AssemblyName System.Drawing

function New-HanIcon([int]$size, [string]$path) {
  $bmp = New-Object System.Drawing.Bitmap $size, $size
  $g = [System.Drawing.Graphics]::FromImage($bmp)
  $g.SmoothingMode = [System.Drawing.Drawing2D.SmoothingMode]::AntiAlias
  $g.TextRenderingHint = [System.Drawing.Text.TextRenderingHint]::AntiAliasGridFit
  $g.Clear([System.Drawing.Color]::FromArgb(255, 3, 2, 19))
  $fontSize = [math]::Max(8, [math]::Floor($size * 0.22))
  $font = New-Object System.Drawing.Font("Segoe UI", $fontSize, [System.Drawing.FontStyle]::Bold)
  $brush = New-Object System.Drawing.SolidBrush([System.Drawing.Color]::White)
  $format = New-Object System.Drawing.StringFormat
  $format.Alignment = "Center"
  $format.LineAlignment = "Center"
  $rect = New-Object System.Drawing.RectangleF 0, 0, $size, $size
  $g.DrawString("HAN", $font, $brush, $rect, $format)
  $g.Dispose()
  $bmp.Save($path, [System.Drawing.Imaging.ImageFormat]::Png)
  $bmp.Dispose()
}

$publicDir = Join-Path $PSScriptRoot ".." "public"
New-Item -ItemType Directory -Force -Path $publicDir | Out-Null
New-HanIcon 512 (Join-Path $publicDir "icon-512.png")
New-HanIcon 192 (Join-Path $publicDir "icon-192.png")
New-HanIcon 180 (Join-Path $publicDir "apple-touch-icon.png")
New-HanIcon 32 (Join-Path $publicDir "favicon.png")