# PWA app icon 生成脚本:简单绿底 + 白色油枪图形
# 用 System.Drawing 渲染,无需外部依赖
Add-Type -AssemblyName System.Drawing
$ErrorActionPreference = 'Stop'

function New-AppIcon {
    param([int]$Size, [string]$OutPath)

    $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]::AntiAlias

    # 背景:深绿圆角矩形
    $bgColor = [System.Drawing.Color]::FromArgb(255, 24, 160, 88)
    $bgBrush = New-Object System.Drawing.SolidBrush $bgColor
    $radius = [int]($Size * 0.18)
    $rect = New-Object System.Drawing.Rectangle 0, 0, $Size, $Size
    $path = New-Object System.Drawing.Drawing2D.GraphicsPath
    $path.AddArc($rect.X, $rect.Y, $radius * 2, $radius * 2, 180, 90)
    $path.AddArc($rect.Right - $radius * 2, $rect.Y, $radius * 2, $radius * 2, 270, 90)
    $path.AddArc($rect.Right - $radius * 2, $rect.Bottom - $radius * 2, $radius * 2, $radius * 2, 0, 90)
    $path.AddArc($rect.X, $rect.Bottom - $radius * 2, $radius * 2, $radius * 2, 90, 90)
    $path.CloseFigure()
    $g.FillPath($bgBrush, $path)
    $bgBrush.Dispose()

    # 油枪轮廓:白色矩形 + 把手 + 喷嘴
    $white = [System.Drawing.Color]::FromArgb(255, 255, 255, 255)
    $whiteBrush = New-Object System.Drawing.SolidBrush $white
    $darkGreen = [System.Drawing.Color]::FromArgb(255, 14, 122, 67)
    $darkBrush = New-Object System.Drawing.SolidBrush $darkGreen

    $unit = $Size / 24.0
    # 油枪主体
    $bodyX = [int](8 * $unit); $bodyY = [int](3 * $unit)
    $bodyW = [int](10 * $unit); $bodyH = [int](15 * $unit)
    $g.FillRectangle($whiteBrush, $bodyX, $bodyY, $bodyW, $bodyH)
    # 把手(横向)
    $handleY = [int](6 * $unit)
    $handleW = [int](5 * $unit); $handleH = [int](3 * $unit)
    $g.FillRectangle($whiteBrush, $bodyX - $handleW, $handleY, $handleW, $handleH)
    # 喷嘴(右侧伸出)
    $nozzleW = [int](5 * $unit); $nozzleH = [int](3 * $unit)
    $nozzleX = $bodyX + $bodyW
    $nozzleY = [int](10 * $unit)
    $g.FillRectangle($whiteBrush, $nozzleX, $nozzleY, $nozzleW, $nozzleH)
    # 底座
    $baseX = [int](6 * $unit); $baseY = [int](18 * $unit)
    $baseW = [int](12 * $unit); $baseH = [int](3 * $unit)
    $g.FillRectangle($darkBrush, $baseX, $baseY, $baseW, $baseH)

    $g.Dispose()
    $bmp.Save($OutPath, [System.Drawing.Imaging.ImageFormat]::Png)
    $bmp.Dispose()
    Write-Host "wrote $OutPath ($Size x $Size)"
}

$out = Join-Path $PSScriptRoot '..\public'
New-AppIcon -Size 192 -OutPath (Join-Path $out 'pwa-192x192.png')
New-AppIcon -Size 512 -OutPath (Join-Path $out 'pwa-512x512.png')
# maskable:留 10% 安全边,Android adaptive icon 用
New-AppIcon -Size 512 -OutPath (Join-Path $out 'pwa-maskable-512x512.png')
Write-Host 'DONE'