# 年糕历险记 —— 程序图标生成（构建与发布.md §8：exe/窗口/快捷方式/安装器使用原版素材 logo）
# 用法：pwsh -File scripts/make_icon.ps1
# 流程：素材包 pack.png → cmd/client/icon.png → go-winres 生成 icon.syso（嵌入游戏 exe）
#       → 同时生成多尺寸 cmd/client/icon.ico（供 NSIS 安装器 MUI_ICON / MUI_UNICON 使用）
$ErrorActionPreference = "Stop"
$root = Split-Path $PSScriptRoot -Parent

# 1) 定位素材包 pack.png（原版 logo，高优先级包在前）→ 复制为 icon.png
$png = $null
foreach ($dir in Get-ChildItem (Join-Path $root "resourcepacks") -Directory -ErrorAction SilentlyContinue) {
    $cand = Join-Path $dir.FullName "pack.png"
    if (Test-Path $cand) { $png = $cand; break }
}
if (-not $png) { throw "未找到素材包 pack.png（resourcepacks/*/pack.png）" }
Copy-Item $png (Join-Path $root "cmd\client\icon.png") -Force
Write-Host "== 图标来源：$png =="

# 2) go-winres 生成 .syso（多尺寸图标组 + 版本资源；winres.json 引用 icon.png）
$env:GOCACHE = Join-Path $root ".gocache"
Push-Location (Join-Path $root "cmd\client")
try {
    go run github.com/tc-hib/go-winres@latest make --in winres.json --out icon --arch amd64 --no-suffix
    if ($LASTEXITCODE -ne 0) { throw "go-winres 生成失败" }
    Move-Item -Force (Join-Path (Get-Location) "icon") (Join-Path (Get-Location) "icon.syso")
} finally {
    Pop-Location
}
Write-Host "== 图标资源已嵌入：cmd/client/icon.syso =="

# 3) 生成多尺寸 icon.ico（16/24/32/48/64/128/256，PNG 压缩，供 NSIS 安装器/卸载器使用）
Add-Type -AssemblyName System.Drawing
$src = [System.Drawing.Image]::FromFile((Join-Path $root "cmd\client\icon.png"))
$sizes = @(16, 24, 32, 48, 64, 128, 256)
$ms = New-Object System.IO.MemoryStream
$bw = New-Object System.IO.BinaryWriter($ms)
# ICONDIR：reserved(2)=0, type(2)=1, count(2)
$bw.Write([uint16]0); $bw.Write([uint16]1); $bw.Write([uint16]$sizes.Count)
$offset = 6 + 16 * $sizes.Count
$images = @()
foreach ($s in $sizes) {
    $bmp = New-Object System.Drawing.Bitmap($s, $s)
    $g = [System.Drawing.Graphics]::FromImage($bmp)
    $g.InterpolationMode = [System.Drawing.Drawing2D.InterpolationMode]::HighQualityBicubic
    $g.DrawImage($src, 0, 0, $s, $s)
    $g.Dispose()
    $pngMs = New-Object System.IO.MemoryStream
    $bmp.Save($pngMs, [System.Drawing.Imaging.ImageFormat]::Png)
    $images += ,$pngMs.ToArray()
    $bmp.Dispose(); $pngMs.Dispose()
}
for ($i = 0; $i -lt $sizes.Count; $i++) {
    $s = $sizes[$i]
    $dim = if ($s -ge 256) { 0 } else { $s }   # 256 用 0 表示
    $bw.Write([byte]$dim); $bw.Write([byte]$dim)
    $bw.Write([byte]0); $bw.Write([byte]0)      # colors / reserved
    $bw.Write([uint16]1); $bw.Write([uint16]32) # planes / bpp
    $bw.Write([uint32]$images[$i].Length)
    $bw.Write([uint32]$offset)
    $offset += $images[$i].Length
}
foreach ($d in $images) { $bw.Write($d) }
$bw.Flush()
[System.IO.File]::WriteAllBytes((Join-Path $root "cmd\client\icon.ico"), $ms.ToArray())
$src.Dispose()
$bw.Close(); $ms.Dispose()
Write-Host "== 安装器图标已生成：cmd/client/icon.ico（$($sizes -join '/') px）=="