param(
    [Parameter(Mandatory = $true)]
    [string]$QtPrefix,

    [string]$BuildDir = "build-windows",
    [string]$DistDir = "dist-windows\chengnan",
    [string]$Generator = "Visual Studio 17 2022",
    [string]$Arch = "x64",
    [ValidateSet("Debug", "Release", "RelWithDebInfo", "MinSizeRel")]
    [string]$Config = "Release"
)

$ErrorActionPreference = "Stop"

function Resolve-FullPath([string]$PathValue) {
    if ([System.IO.Path]::IsPathRooted($PathValue)) {
        return [System.IO.Path]::GetFullPath($PathValue)
    }
    return [System.IO.Path]::GetFullPath((Join-Path (Get-Location) $PathValue))
}

function Require-Command([string]$Name) {
    $command = Get-Command $Name -ErrorAction SilentlyContinue
    if (-not $command) {
        throw "找不到命令：$Name。请先安装并加入 PATH。"
    }
    return $command.Source
}

$ProjectDir = Split-Path -Parent $MyInvocation.MyCommand.Path
Set-Location $ProjectDir

$QtPrefix = Resolve-FullPath $QtPrefix
$BuildPath = Resolve-FullPath $BuildDir
$DistPath = Resolve-FullPath $DistDir
$QtBin = Join-Path $QtPrefix "bin"
$WinDeployQt = Join-Path $QtBin "windeployqt.exe"

if (-not (Test-Path $QtPrefix)) {
    throw "QtPrefix 不存在：$QtPrefix"
}

if (-not (Test-Path $WinDeployQt)) {
    throw "找不到 windeployqt：$WinDeployQt。请确认 -QtPrefix 指向 Qt 套件目录，例如 C:\Qt\6.7.2\msvc2019_64。"
}

Require-Command "cmake" | Out-Null

$env:PATH = "$QtBin;$env:PATH"
$env:CMAKE_PREFIX_PATH = $QtPrefix

Write-Host "== chengnan Windows 构建 ==" -ForegroundColor Cyan
Write-Host "项目目录：$ProjectDir"
Write-Host "Qt 目录：$QtPrefix"
Write-Host "构建目录：$BuildPath"
Write-Host "发布目录：$DistPath"
Write-Host "生成器：$Generator"
Write-Host "配置：$Config"

$configureArgs = @(
    "-S", $ProjectDir,
    "-B", $BuildPath,
    "-G", $Generator,
    "-DCMAKE_PREFIX_PATH=$QtPrefix"
)

if ($Generator -like "Visual Studio*") {
    $configureArgs += @("-A", $Arch)
} else {
    $configureArgs += "-DCMAKE_BUILD_TYPE=$Config"
}

Write-Host "`n== 配置 CMake ==" -ForegroundColor Cyan
& cmake @configureArgs

Write-Host "`n== 编译 ==" -ForegroundColor Cyan
& cmake --build $BuildPath --config $Config --parallel

$ExeCandidates = @(
    (Join-Path $BuildPath "$Config\chengnan.exe"),
    (Join-Path $BuildPath "chengnan.exe")
)
$ExePath = $ExeCandidates | Where-Object { Test-Path $_ } | Select-Object -First 1
if (-not $ExePath) {
    throw "构建完成但找不到 chengnan.exe。已检查：$($ExeCandidates -join ', ')"
}

Write-Host "`n== 准备发布目录 ==" -ForegroundColor Cyan
if (Test-Path $DistPath) {
    Remove-Item -Recurse -Force $DistPath
}
New-Item -ItemType Directory -Force -Path $DistPath | Out-Null
Copy-Item $ExePath $DistPath

Write-Host "`n== 收集 Qt 运行库 ==" -ForegroundColor Cyan
$DistExe = Join-Path $DistPath "chengnan.exe"
& $WinDeployQt --release --no-translations $DistExe

Write-Host "`n构建完成：$DistExe" -ForegroundColor Green
Write-Host "请整体复制目录：$DistPath"