# WidgeTDC Development Startup Script
# Robust startup med health checks

param(
    [switch]$SkipDocker,
    [switch]$BackendOnly,
    [switch]$FrontendOnly
)

$ErrorActionPreference = "Stop"

Write-Host ""
Write-Host "================================================" -ForegroundColor Cyan
Write-Host "  WidgeTDC Development Environment Startup" -ForegroundColor Cyan
Write-Host "================================================" -ForegroundColor Cyan
Write-Host ""

# Function til at tjekke om en port er i brug
function Test-Port {
    param([int]$Port)
    $connection = New-Object System.Net.Sockets.TcpClient
    try {
        $connection.Connect("localhost", $Port)
        $connection.Close()
        return $true
    } catch {
        return $false
    }
}

# Function til at vente på service
function Wait-ForService {
    param(
        [string]$Name,
        [int]$Port,
        [int]$MaxAttempts = 30
    )

    Write-Host "  Waiting for $Name on port $Port..." -NoNewline

    for ($i = 1; $i -le $MaxAttempts; $i++) {
        if (Test-Port -Port $Port) {
            Write-Host " OK" -ForegroundColor Green
            return $true
        }
        Start-Sleep -Seconds 1
        Write-Host "." -NoNewline
    }

    Write-Host " TIMEOUT" -ForegroundColor Red
    return $false
}

# Step 1: Start Docker services
if (-not $SkipDocker) {
    Write-Host "[1/4] Starting Docker infrastructure..." -ForegroundColor Yellow

    # Check if docker is running
    $dockerRunning = docker info 2>&1 | Select-String "Server Version"
    if (-not $dockerRunning) {
        Write-Host "  ERROR: Docker is not running. Please start Docker Desktop." -ForegroundColor Red
        exit 1
    }

    # Start services
    docker-compose up -d

    # Wait for services
    Write-Host ""
    Write-Host "  Waiting for services to be healthy..." -ForegroundColor Gray

    $pgReady = Wait-ForService -Name "PostgreSQL" -Port 5432 -MaxAttempts 30
    $redisReady = Wait-ForService -Name "Redis" -Port 6379 -MaxAttempts 20
    $neo4jReady = Wait-ForService -Name "Neo4j" -Port 7687 -MaxAttempts 45

    if (-not ($pgReady -and $redisReady)) {
        Write-Host ""
        Write-Host "  WARNING: Some services failed to start. Backend may have limited functionality." -ForegroundColor Yellow
    }

    Write-Host ""
} else {
    Write-Host "[1/4] Skipping Docker (--SkipDocker)" -ForegroundColor Gray
}

# Step 2: Install dependencies if needed
Write-Host "[2/4] Checking dependencies..." -ForegroundColor Yellow
if (-not (Test-Path "node_modules")) {
    Write-Host "  Running npm install..." -ForegroundColor Gray
    npm install
}
Write-Host "  Dependencies OK" -ForegroundColor Green
Write-Host ""

# Step 3: Build shared packages
Write-Host "[3/4] Building shared packages..." -ForegroundColor Yellow
npm run build:shared 2>&1 | Out-Null
Write-Host "  Shared packages built" -ForegroundColor Green
Write-Host ""

# Step 4: Start applications
Write-Host "[4/4] Starting applications..." -ForegroundColor Yellow

if ($BackendOnly) {
    Write-Host "  Starting backend only..." -ForegroundColor Gray
    npm run dev:backend
} elseif ($FrontendOnly) {
    Write-Host "  Starting frontend only..." -ForegroundColor Gray
    npm run dev:frontend
} else {
    Write-Host "  Starting backend and frontend concurrently..." -ForegroundColor Gray
    Write-Host ""
    Write-Host "================================================" -ForegroundColor Green
    Write-Host "  Backend:  http://localhost:3001" -ForegroundColor White
    Write-Host "  Frontend: http://localhost:5173" -ForegroundColor White
    Write-Host "  Neo4j:    http://localhost:7474" -ForegroundColor White
    Write-Host "================================================" -ForegroundColor Green
    Write-Host ""
    npm run dev
}