Build.ps1

# JustLive Build Script
# Compiles the JustLive project using Unreal Engine 5.7

param(
    [string]$Configuration = "Development Editor",
    [string]$Platform = "Win64",
    [switch]$Clean,
    [switch]$Rebuild,
    [switch]$HotReload,
    [switch]$Open
)

$ErrorActionPreference = "Stop"

# Paths
$UE_PATH = "D:/Applications/UE_5.7"
$PROJECT_ROOT = $PSScriptRoot
$PROJECT_FILE = Join-Path $PROJECT_ROOT "JustLive.uproject"
$UBT_PATH = Join-Path $UE_PATH "Engine/Binaries/DotNET/UnrealBuildTool/UnrealBuildTool.exe"

# Validate paths
if (-not (Test-Path $UE_PATH)) {
    Write-Error "Unreal Engine not found at: $UE_PATH"
    exit 1
}

if (-not (Test-Path $PROJECT_FILE)) {
    Write-Error "Project file not found at: $PROJECT_FILE"
    exit 1
}

if (-not (Test-Path $UBT_PATH)) {
    Write-Error "UnrealBuildTool not found at: $UBT_PATH"
    exit 1
}

Write-Host "========================================" -ForegroundColor Cyan
Write-Host "JustLive Build Script" -ForegroundColor Cyan
Write-Host "========================================" -ForegroundColor Cyan
Write-Host "Configuration: $Configuration" -ForegroundColor Yellow
Write-Host "Platform: $Platform" -ForegroundColor Yellow
Write-Host "Hot-Reload: $HotReload" -ForegroundColor Yellow
Write-Host "Project: $PROJECT_FILE" -ForegroundColor Yellow
Write-Host ""

# Clean if requested
if ($Clean -or $Rebuild) {
    Write-Host "Cleaning build artifacts..." -ForegroundColor Yellow
    
    $DirsToClean = @(
        (Join-Path $PROJECT_ROOT "Binaries"),
        (Join-Path $PROJECT_ROOT "Intermediate"),
        (Join-Path $PROJECT_ROOT "Saved/Logs")
    )
    
    foreach ($dir in $DirsToClean) {
        if (Test-Path $dir) {
            Write-Host "  Removing: $dir" -ForegroundColor Gray
            Remove-Item -Path $dir -Recurse -Force -ErrorAction SilentlyContinue
        }
    }
    Write-Host "Clean complete!" -ForegroundColor Green
    Write-Host ""
}

# Auto-detect if Unreal Editor is running
if (-not $HotReload) {
    $EditorProcess = Get-Process -Name "UnrealEditor*" -ErrorAction SilentlyContinue
    if ($EditorProcess) {
        Write-Host "⚠️  Unreal Editor is running - enabling HOT-RELOAD automatically" -ForegroundColor Yellow
        $HotReload = $true
    }
}

# Build the project
if ($HotReload) {
    Write-Host "Building JustLive (HOT-RELOAD MODE - Editor can stay open)..." -ForegroundColor Yellow
} else {
    Write-Host "Building JustLive (Standard build - close Editor first)..." -ForegroundColor Yellow
}
Write-Host ""

$BuildArgs = @(
    "JustLiveEditor",
    $Platform,
    "Development",
    "-Project=`"$PROJECT_FILE`"",
    "-Progress",
    "-MaxParallelActions=12"
)

# Add NoHotReloadFromIDE flag only if NOT doing hot-reload
if (-not $HotReload) {
    $BuildArgs += "-NoHotReloadFromIDE"
}

Write-Host "Running: $UBT_PATH $($BuildArgs -join ' ')" -ForegroundColor Gray
Write-Host ""

& $UBT_PATH $BuildArgs

if ($LASTEXITCODE -eq 0) {
    Write-Host ""
    Write-Host "========================================" -ForegroundColor Green
    Write-Host "BUILD SUCCESSFUL!" -ForegroundColor Green
    Write-Host "========================================" -ForegroundColor Green
    if ($HotReload) {
        Write-Host "Hot-reload complete! Changes should be reflected in the Editor." -ForegroundColor Cyan
    }
    
    # Launch editor if --open flag is set
    if ($Open) {
        Write-Host ""
        Write-Host "Launching Unreal Editor..." -ForegroundColor Cyan
        $EditorPath = Join-Path $UE_PATH "Engine/Binaries/Win64/UnrealEditor.exe"
        
        if (Test-Path $EditorPath) {
            Start-Process -FilePath $EditorPath -ArgumentList "`"$PROJECT_FILE`""
            Write-Host "Editor launched successfully!" -ForegroundColor Green
        } else {
            Write-Host "Warning: Editor executable not found at: $EditorPath" -ForegroundColor Yellow
        }
    }
} else {
    Write-Host ""
    Write-Host "========================================" -ForegroundColor Red
    Write-Host "BUILD FAILED!" -ForegroundColor Red
    Write-Host "========================================" -ForegroundColor Red
    exit $LASTEXITCODE
}