# Ensure we are in the backend directory
$ScriptDir = Split-Path -Parent $MyInvocation.MyCommand.Path
Set-Location $ScriptDir

Write-Host "Starting Backend Build Process..." -ForegroundColor Cyan

# Define paths
$VenvPath = Join-Path $ScriptDir "venv"
$PythonExe = Join-Path $VenvPath "Scripts\python.exe"
$PipExe = Join-Path $VenvPath "Scripts\pip.exe"
$PyInstallerExe = Join-Path $VenvPath "Scripts\pyinstaller.exe"
$SpecFile = "smartedt_backend.spec"

# 1. Check/Create Virtual Environment
if (-not (Test-Path $VenvPath)) {
    Write-Host "Virtual environment not found. Creating..." -ForegroundColor Yellow
    python -m venv venv
    if ($LASTEXITCODE -ne 0) {
        Write-Error "Failed to create virtual environment."
        exit 1
    }
} else {
    Write-Host "Using existing virtual environment." -ForegroundColor Green
}

# 2. Install Dependencies
Write-Host "Installing/Updating build dependencies..." -ForegroundColor Yellow
& $PipExe install -r requirements.txt
& $PipExe install -r requirements_build.txt
if ($LASTEXITCODE -ne 0) {
    Write-Error "Failed to install dependencies."
    exit 1
}

# 3. Clean previous builds
Write-Host "Cleaning up previous builds..." -ForegroundColor Yellow
if (Test-Path "dist") { Remove-Item -Recurse -Force "dist" }
if (Test-Path "build") { Remove-Item -Recurse -Force "build" }

# 4. Run PyInstaller
Write-Host "Running PyInstaller..." -ForegroundColor Cyan
& $PyInstallerExe --clean --noconfirm $SpecFile

if ($LASTEXITCODE -eq 0) {
    Write-Host "`nBackend build successful!" -ForegroundColor Green
    Write-Host "Executable located at: $(Join-Path $ScriptDir 'dist\smartedt_backend\smartedt_backend.exe')" -ForegroundColor Green
} else {
    Write-Error "`nBackend build failed!"
    exit 1
}