[Console]::OutputEncoding = [System.Text.Encoding]::UTF8

$projectWindowsPath = $PSScriptRoot
$wslProjectPath = (wsl wslpath $projectWindowsPath).Trim()
$envFilePath = Join-Path $PSScriptRoot '.env'

function Get-EnvValue {
    param(
        [string]$FilePath,
        [string]$Key
    )

    if (-not (Test-Path $FilePath)) {
        return $null
    }

    $line = Get-Content $FilePath | Where-Object { $_ -match "^$Key=" } | Select-Object -First 1
    if (-not $line) {
        return $null
    }

    return ($line -split '=', 2)[1].Trim()
}

function Test-TcpPortFast {
    param(
        [string]$HostName,
        [int]$Port,
        [int]$TimeoutMs = 3000
    )

    $client = New-Object System.Net.Sockets.TcpClient
    try {
        $asyncResult = $client.BeginConnect($HostName, $Port, $null, $null)
        if (-not $asyncResult.AsyncWaitHandle.WaitOne($TimeoutMs, $false)) {
            $client.Close()
            return $false
        }

        $client.EndConnect($asyncResult)
        $client.Close()
        return $true
    }
    catch {
        $client.Close()
        return $false
    }
}

Write-Host "============================================" -ForegroundColor Cyan
Write-Host "   HM ITAM WSL Docker Start" -ForegroundColor Cyan
Write-Host "============================================" -ForegroundColor Cyan
Write-Host ""

Write-Host "[INFO] Checking WSL..."
wsl -l -v
if ($LASTEXITCODE -ne 0) {
    Write-Host "[ERROR] WSL is not available." -ForegroundColor Red
    exit 1
}

Write-Host "[INFO] Checking Docker in WSL..."
wsl sh -lc "docker --version"
if ($LASTEXITCODE -ne 0) {
    Write-Host "[ERROR] Docker is not available inside WSL." -ForegroundColor Red
    exit 1
}

$dbHost = Get-EnvValue -FilePath $envFilePath -Key 'DB_HOST'
$dbPort = Get-EnvValue -FilePath $envFilePath -Key 'DB_PORT'

if (-not $dbPort) {
    $dbPort = '3306'
}

if (-not $dbHost) {
    Write-Host "[WARN] .env is missing DB_HOST. Containers will still start, but backend DB calls will fail until DB settings are fixed." -ForegroundColor Yellow
}

if ($dbHost) {
    Write-Host "[INFO] Checking external DB reachability..."
    $dbReachable = Test-TcpPortFast -HostName $dbHost -Port ([int]$dbPort)
    if (-not $dbReachable) {
        Write-Host "[WARN] External DB is unreachable: $dbHost`:$dbPort" -ForegroundColor Yellow
        Write-Host "[HINT] Containers will still start. Check VPN/private network connection, firewall rules, DB host/port in .env, or whether the DB server is running." -ForegroundColor Yellow
    }
}

Write-Host "[INFO] Starting ITAM containers in WSL..."
wsl sh -lc "cd '$wslProjectPath' && docker compose up --build -d --remove-orphans"
if ($LASTEXITCODE -ne 0) {
    Write-Host "[WARN] Build-based startup failed. Retrying with cached images/containers..." -ForegroundColor Yellow
    wsl sh -lc "cd '$wslProjectPath' && docker compose up -d --remove-orphans"
    if ($LASTEXITCODE -ne 0) {
        Write-Host "[ERROR] Failed to start containers." -ForegroundColor Red
        exit 1
    }
}

Write-Host ""
Write-Host "============================================" -ForegroundColor Green
Write-Host " [OK] WSL Docker stack started." -ForegroundColor Green
Write-Host " [INFO] Frontend: http://localhost:8080"
Write-Host " [INFO] Backend : http://localhost:3000/api/assets/master"
Write-Host "============================================" -ForegroundColor Green

Start-Process "http://localhost:8080"