# 一键编译打包 viewsagent。
#
# 生成一个没有控制台窗口的 viewsagent.exe，直接放在项目根目录。
# 用法：双击本文件即可；或在 PowerShell 里执行 .\build.ps1
# 可选参数：notest 表示跳过单元测试。

$ErrorActionPreference = "Stop"
Set-Location -Path $PSScriptRoot

function Fail($msg) {
    Write-Host ""
    Write-Host "  [失败] $msg" -ForegroundColor Red
    exit 1
}

function Step($msg) {
    Write-Host ""
    Write-Host "==> $msg" -ForegroundColor Cyan
}

# ---------- 1. 找 go ----------
$go = Get-Command go -ErrorAction SilentlyContinue
if (-not $go) {
    Fail "没有找到 go 命令。请先安装 Go（1.24 以上）并把 go.exe 加入 PATH。"
}
Write-Host "    Go    : $($go.Source)" -ForegroundColor DarkGray

# ---------- 2. 找 gcc ----------
# Fyne 的 OpenGL 绑定 go-gl 是 cgo 包，必须有 C 编译器才能编译，
# 所以这里自动去常见安装位置里找 gcc 并临时加进 PATH。
$gccDirs = @(
    "C:\msys64\ucrt64\bin",
    "C:\msys64\mingw64\bin",
    "$env:USERPROFILE\msys64\ucrt64\bin",
    "$env:USERPROFILE\msys64\mingw64\bin",
    "E:\Tools\msys64\ucrt64\bin",
    "E:\Tools\msys64\mingw64\bin",
    "C:\Tools\msys64\mingw64\bin",
    "C:\mingw64\bin",
    "C:\TDM-GCC-64\bin",
    "C:\ProgramData\chocolatey\bin"
)

$gcc = Get-Command gcc -ErrorAction SilentlyContinue
if (-not $gcc) {
    foreach ($dir in $gccDirs) {
        if (Test-Path (Join-Path $dir "gcc.exe")) {
            $env:Path = "$dir;" + $env:Path
            $gcc = Get-Command gcc -ErrorAction SilentlyContinue
            break
        }
    }
}
if (-not $gcc) {
    Fail "没有找到 gcc。Fyne 依赖 cgo，需要先装 mingw-w64（MSYS2: pacman -S mingw-w64-x86_64-gcc，或 chocolatey: choco install mingw）。"
}
Write-Host "    gcc   : $($gcc.Source)" -ForegroundColor DarkGray

$env:CGO_ENABLED = "1"

# ---------- 3. 跑测试 ----------
if ($args -contains "notest") {
    Write-Host ""
    Write-Host "==> 跳过单元测试" -ForegroundColor Cyan
} else {
    Step "运行单元测试"
    go test ./...
    if ($LASTEXITCODE -ne 0) {
        Fail "单元测试没有通过，已中止打包。"
    }
}

# ---------- 4. 编译 ----------
Step "编译可执行文件"

$out = Join-Path $PSScriptRoot "viewsagent.exe"
if (Test-Path $out) {
    try {
        Remove-Item $out -Force -ErrorAction Stop
    } catch {
        Fail "无法覆盖 viewsagent.exe，请先关闭正在运行的 viewsagent 程序。"
    }
}

# -H windowsgui 去掉控制台窗口，程序就是纯粹的桌面应用。
go build -trimpath -ldflags "-H windowsgui -s -w" -o $out .
if ($LASTEXITCODE -ne 0) {
    Fail "编译失败。"
}

if (-not (Test-Path $out)) {
    Fail "编译结束但没有生成 viewsagent.exe。"
}

$size = [math]::Round((Get-Item $out).Length / 1MB, 1)
Write-Host ""
Write-Host "  [完成] viewsagent.exe 已生成（$size MB）" -ForegroundColor Green
Write-Host "    路径 : $out" -ForegroundColor Gray
Write-Host ""