# Build Linux image on dev machine and export tar (Option C)
# Usage: powershell -ExecutionPolicy Bypass -File deploy/build-image-local.ps1

$ErrorActionPreference = "Stop"
$Root = Split-Path -Parent (Split-Path -Parent $MyInvocation.MyCommand.Path)
$ImageTag = "yubao-app:latest"
$OutTar = Join-Path $Root "deploy\yubao-app-image.tar"
$Platform = "linux/amd64"

Set-Location $Root

if (-not (Get-Command docker -ErrorAction SilentlyContinue)) {
    throw "docker not found - start Docker Desktop first"
}

docker info *> $null
if ($LASTEXITCODE -ne 0) {
    throw "Docker is not running"
}

Write-Host "build: platform=$Platform tag=$ImageTag"
Write-Host "build: Next.js compile may take 5-15 minutes..."

$env:DOCKER_BUILDKIT = '1'
& docker build --platform $Platform -t $ImageTag -f Dockerfile .
if ($LASTEXITCODE -ne 0) {
    throw "docker build failed"
}

if (Test-Path $OutTar) {
    Remove-Item -Force $OutTar
}

Write-Host "build: export -> $OutTar"
& docker save $ImageTag -o $OutTar
if ($LASTEXITCODE -ne 0) {
    throw "docker save failed"
}

$sizeMb = [math]::Round((Get-Item $OutTar).Length / 1MB, 1)
Write-Host ""
Write-Host "build: done size=${sizeMb}MB"
Write-Host "upload deploy/yubao-app-image.tar to /home/project/yubao/deploy/"
Write-Host "then on server: bash deploy/install-prebuilt-image.sh"