Add-Type -AssemblyName System.Drawing

# Draw 27px line icons at 3x resolution for the native tab bar.
function Draw-TabIcon {
  param(
    [System.Drawing.Graphics] $Graphics,
    [System.Drawing.Pen] $Pen,
    [string] $Name
  )

  switch ($Name) {
    'home' {
      $Graphics.DrawLine($Pen, 3, 11, 12, 4)
      $Graphics.DrawLine($Pen, 12, 4, 21, 11)
      $Graphics.DrawLine($Pen, 5, 10, 5, 21)
      $Graphics.DrawLine($Pen, 19, 10, 19, 21)
      $Graphics.DrawLine($Pen, 5, 21, 19, 21)
      $Graphics.DrawLine($Pen, 10, 21, 10, 15)
      $Graphics.DrawLine($Pen, 10, 15, 14, 15)
      $Graphics.DrawLine($Pen, 14, 15, 14, 21)
    }
    'match' {
      $Graphics.DrawEllipse($Pen, 4, 4, 6, 9)
      $Graphics.DrawEllipse($Pen, 14, 4, 6, 9)
      $Graphics.DrawLine($Pen, 7, 13, 3, 21)
      $Graphics.DrawLine($Pen, 17, 13, 21, 21)
      $Graphics.DrawLine($Pen, 10, 17, 14, 17)
      $Graphics.DrawEllipse($Pen, 10.5, 3, 3, 3)
    }
    'rank' {
      $Graphics.DrawRectangle($Pen, 3, 15, 6, 6)
      $Graphics.DrawRectangle($Pen, 9, 11, 6, 10)
      $Graphics.DrawRectangle($Pen, 15, 17, 6, 4)
      $Graphics.DrawLine($Pen, 3, 21, 21, 21)
      $Graphics.DrawEllipse($Pen, 10, 3, 4, 4)
    }
    'shop' {
      $Graphics.DrawRectangle($Pen, 4, 8, 16, 13)
      $Graphics.DrawArc($Pen, 8, 3, 8, 10, 180, 180)
      $Graphics.DrawLine($Pen, 8, 8, 8, 9)
      $Graphics.DrawLine($Pen, 16, 8, 16, 9)
    }
    'me' {
      $Graphics.DrawEllipse($Pen, 8, 3, 8, 8)
      $Graphics.DrawBezier($Pen, 4, 21, 4, 10, 20, 10, 20, 21)
      $Graphics.DrawLine($Pen, 4, 21, 20, 21)
    }
  }
}

# Match the native tab bar text colors in pages.json.
$colors = @{ normal = '#9ba59e'; selected = '#4c9b53' }
$names = @('home', 'match', 'rank', 'shop', 'me')
$outputDirectory = Join-Path $PSScriptRoot '..\src\static\tabbar'
New-Item -ItemType Directory -Force -Path $outputDirectory | Out-Null

foreach ($name in $names) {
  foreach ($state in $colors.Keys) {
    # Keep the background transparent and antialias the strokes.
    $bitmap = [System.Drawing.Bitmap]::new(81, 81)
    $graphics = [System.Drawing.Graphics]::FromImage($bitmap)
    $graphics.SmoothingMode = [System.Drawing.Drawing2D.SmoothingMode]::AntiAlias
    $graphics.PixelOffsetMode = [System.Drawing.Drawing2D.PixelOffsetMode]::HighQuality
    $graphics.ScaleTransform(3, 3)
    $pen = [System.Drawing.Pen]::new([System.Drawing.ColorTranslator]::FromHtml($colors[$state]), 1.8)
    $pen.StartCap = [System.Drawing.Drawing2D.LineCap]::Round
    $pen.EndCap = [System.Drawing.Drawing2D.LineCap]::Round
    $pen.LineJoin = [System.Drawing.Drawing2D.LineJoin]::Round

    Draw-TabIcon -Graphics $graphics -Pen $pen -Name $name
    $bitmap.Save((Join-Path $outputDirectory "$name-$state.png"), [System.Drawing.Imaging.ImageFormat]::Png)
    $pen.Dispose()
    $graphics.Dispose()
    $bitmap.Dispose()
  }
}