param(
    [string]$ProjectRoot = (Resolve-Path (Join-Path $PSScriptRoot "..")).Path
)

$ErrorActionPreference = "Stop"

function Assert-PathExists {
    param(
        [string]$Path,
        [string]$Description
    )

    if (-not (Test-Path -LiteralPath $Path)) {
        throw "$Description not found: $Path"
    }
}

function Reset-Directory {
    param([string]$Path)

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

    New-Item -ItemType Directory -Path $Path | Out-Null
}

function Copy-DirectoryContents {
    param(
        [string]$Source,
        [string]$Destination
    )

    Assert-PathExists -Path $Source -Description "Source directory"
    Reset-Directory -Path $Destination

    Get-ChildItem -LiteralPath $Source -Force | ForEach-Object {
        Copy-Item -LiteralPath $_.FullName -Destination $Destination -Recurse -Force
    }
}

$packageRoot = Join-Path $ProjectRoot "PackageSource/com.foldcc.cc-framework.BriskGameServer"
$runtimeSource = Join-Path $ProjectRoot "Assets/BriskSdk/Runtime"
$samplesSource = Join-Path $ProjectRoot "Assets/BriskSdk/Samples/QuickStart"
$sceneSource = Join-Path $ProjectRoot "Assets/Scenes/BriskQuickStartScene.unity"
$sceneMetaSource = Join-Path $ProjectRoot "Assets/Scenes/BriskQuickStartScene.unity.meta"

Assert-PathExists -Path $packageRoot -Description "Package root"
Assert-PathExists -Path $runtimeSource -Description "Runtime source"
Assert-PathExists -Path $samplesSource -Description "Sample source"
Assert-PathExists -Path $sceneSource -Description "Sample scene"
Assert-PathExists -Path $sceneMetaSource -Description "Sample scene meta"

$runtimeTarget = Join-Path $packageRoot "Runtime"
$samplesTarget = Join-Path $packageRoot "Samples~/QuickStart"
$samplesRootTarget = Join-Path $packageRoot "Samples~"

Copy-DirectoryContents -Source $runtimeSource -Destination $runtimeTarget

if (-not (Test-Path -LiteralPath $samplesRootTarget)) {
    New-Item -ItemType Directory -Path $samplesRootTarget | Out-Null
}

Copy-DirectoryContents -Source $samplesSource -Destination $samplesTarget
Copy-Item -LiteralPath $sceneSource -Destination $samplesTarget -Force
Copy-Item -LiteralPath $sceneMetaSource -Destination $samplesTarget -Force

Write-Host "Brisk package source synced."
Write-Host "Package root: $packageRoot"