# LyDos Universal Installer — Windows PowerShell
#
# Usage:
#   irm https://lydos.ailydian.com/install.ps1 | iex
#
# Requirements: PowerShell 5.1+, Python 3.9+, Git
# Mock/demo YASAK.

param(
    [string]$Locale = "",
    [switch]$Quiet = $false,
    [switch]$NoLogin = $false,
    [string]$Prefix = "$env:LOCALAPPDATA\lydos"
)

$ErrorActionPreference = "Stop"
$ProgressPreference = "SilentlyContinue"

$LYDOS_API = if ($env:LYDOS_API) { $env:LYDOS_API } else { "https://lydos.ailydian.com" }
$REPO = "https://github.com/lydianai/AILYDIAN-AGENT-ORCHESTRATOR.git"

$StateDir = Join-Path $env:USERPROFILE ".lydos"
$BinDir = Join-Path $Prefix "bin"
$Workspace = Join-Path $Prefix "checkout"
$LydosBin = Join-Path $BinDir "lydos.cmd"
$LydosPy = Join-Path $BinDir "lydos.py"

# ─── Locale auto-detect ────────────────────────────────────────────────────

function Detect-Locale {
    if ($Locale) { return $Locale }
    try {
        $culture = (Get-Culture).TwoLetterISOLanguageName
        $supported = @("tr","en","de","fr","es","ar","zh","ja","pt","ru","it","ko")
        if ($supported -contains $culture) { return $culture }
    } catch { }
    return "en"
}

$Lang = Detect-Locale

function Msg($key) {
    $m = @{
        "tr_start"      = "LyDos kurulumu başlıyor…"
        "en_start"      = "LyDos installation starting…"
        "tr_os_detect"  = "Sistem tespit ediliyor…"
        "en_os_detect"  = "Detecting system…"
        "tr_deps_check" = "Bağımlılıklar kontrol ediliyor…"
        "en_deps_check" = "Checking dependencies…"
        "tr_installing" = "LyDos kopyalanıyor…"
        "en_installing" = "Copying LyDos…"
        "tr_task"       = "Arka plan görevi kuruluyor…"
        "en_task"       = "Setting up background task…"
        "tr_done"       = "✓ Kurulum tamamlandı."
        "en_done"       = "✓ Installation complete."
        "tr_login_prompt" = "Giriş yapmak için: lydos login"
        "en_login_prompt" = "Run 'lydos login' to authenticate"
    }
    $k = "${Lang}_${key}"
    if ($m.ContainsKey($k)) { return $m[$k] }
    if ($m.ContainsKey("en_${key}")) { return $m["en_${key}"] }
    return $key
}

function Log($msg) { if (-not $Quiet) { Write-Host "  [lydos] $msg" } }

Log (Msg "start")

# ─── Dependency check ──────────────────────────────────────────────────────

Log (Msg "deps_check")

$missing = @()
foreach ($cmd in @("git","python","python3")) {
    $ok = Get-Command $cmd -ErrorAction SilentlyContinue
    if (-not $ok -and $cmd -eq "git") { $missing += "git" }
}

# Python3 vs python discovery
$PythonExe = $null
foreach ($p in @("python3","python","py")) {
    $found = Get-Command $p -ErrorAction SilentlyContinue
    if ($found) {
        $ver = & $p -c "import sys; print(f'{sys.version_info.major}.{sys.version_info.minor}')" 2>$null
        if ($ver -and [version]$ver -ge [version]"3.9") {
            $PythonExe = $found.Source
            break
        }
    }
}

if (-not $PythonExe) {
    Write-Host "[lydos] ERROR: Python 3.9+ required." -ForegroundColor Red
    Write-Host "[lydos] Install: winget install Python.Python.3.12" -ForegroundColor Yellow
    exit 4
}

if ($missing.Count -gt 0) {
    Write-Host "[lydos] MISSING: $($missing -join ', ')" -ForegroundColor Red
    Write-Host "[lydos] Install: winget install Git.Git" -ForegroundColor Yellow
    exit 3
}

Log "Python: $PythonExe"
Log "$(Msg 'os_detect'): Windows ($([System.Environment]::OSVersion.Version)) (lang=$Lang)"

# ─── Workspace ─────────────────────────────────────────────────────────────

Log (Msg "installing")
New-Item -ItemType Directory -Force -Path $BinDir, $StateDir, $Prefix | Out-Null

if (Test-Path (Join-Path $Workspace ".git")) {
    Push-Location $Workspace
    try { git pull --ff-only --quiet 2>$null } catch { Log "(update skipped)" }
    Pop-Location
} else {
    if (Test-Path $Workspace) { Remove-Item -Recurse -Force $Workspace }
    git clone --depth 1 --quiet $REPO $Workspace 2>$null
    if ($LASTEXITCODE -ne 0) {
        Write-Host "[lydos] ERROR: git clone failed" -ForegroundColor Red
        exit 5
    }
}

# ─── Create lydos.cmd wrapper ──────────────────────────────────────────────

Copy-Item -Force (Join-Path $Workspace "scripts\lydos") $LydosPy

$cmdContent = @"
@echo off
"$PythonExe" "$LydosPy" %*
"@
Set-Content -Path $LydosBin -Value $cmdContent -Encoding ASCII

# Add to PATH (user)
$userPath = [Environment]::GetEnvironmentVariable("Path", "User")
if ($userPath -notlike "*$BinDir*") {
    $newPath = if ($userPath) { "$userPath;$BinDir" } else { $BinDir }
    [Environment]::SetEnvironmentVariable("Path", $newPath, "User")
    Log "PATH updated (user scope) — restart shell to apply"
}

# ─── Scheduled Task for Q158 background ────────────────────────────────────

Log (Msg "task")

try {
    $taskName = "LyDosQ158Autonomous"
    $existing = Get-ScheduledTask -TaskName $taskName -ErrorAction SilentlyContinue
    if ($existing) {
        Unregister-ScheduledTask -TaskName $taskName -Confirm:$false -ErrorAction SilentlyContinue
    }
    $action = New-ScheduledTaskAction -Execute $PythonExe -Argument "`"$LydosPy`" status"
    $trigger = New-ScheduledTaskTrigger -Once -At (Get-Date).AddMinutes(1) `
                    -RepetitionInterval (New-TimeSpan -Minutes 5)
    $settings = New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries `
                    -DontStopIfGoingOnBatteries -StartWhenAvailable
    Register-ScheduledTask -TaskName $taskName -Action $action -Trigger $trigger `
                    -Settings $settings -Description "LyDos 47 autonomous engineers (KURAL 28)" `
                    -Force | Out-Null
    Log "Scheduled Task: $taskName (every 5 min)"
} catch {
    Log "(scheduled task setup skipped: $_)"
}

Log (Msg "done")
Log "Binary    : $LydosBin"
Log "Workspace : $Workspace"
Log "State     : $StateDir"
Log ""
Log (Msg "login_prompt")

if (-not $NoLogin) {
    try { & $LydosBin login 2>$null } catch { }
}

exit 0