# ============================================================
# KUL IDEAI - Windows Installer (PowerShell)
# https://webstree.com - Webstree AI yerel asistan kurulumu
# Usage: irm https://webstree.com/download/ideai-windows.ps1 | iex
# ============================================================

#Requires -Version 5.0
$ErrorActionPreference = "Stop"

function Write-Banner {
    Write-Host ""
    Write-Host "   _  __ _   _ _        ___ ____  _____ _    ___" -ForegroundColor Cyan
    Write-Host "  | |/ /| | | | |      |_ _|  _ \| ____/ \  |_ _|" -ForegroundColor Cyan
    Write-Host "  | ' / | | | | |       | || | | |  _|/ _ \  | |" -ForegroundColor Cyan
    Write-Host "  | . \ | |_| | |___    | || |_| | |__/ ___ \ | |" -ForegroundColor Cyan
    Write-Host "  |_|\_\ \___/|_____|  |___|____/|_____/   \_\___|" -ForegroundColor Cyan
    Write-Host ""
    Write-Host "  Webstree AI - Yerel yapay zeka asistani" -ForegroundColor DarkGray
    Write-Host "  Qwen3.6:35b + Ollama + Kul fine-tuned" -ForegroundColor DarkGray
    Write-Host ""
}

function Write-Log { param($msg) Write-Host "[ideai] $msg" -ForegroundColor Cyan }
function Write-Ok  { param($msg) Write-Host "[OK] $msg" -ForegroundColor Green }
function Write-Warn { param($msg) Write-Host "[!] $msg" -ForegroundColor Yellow }
function Write-Err { param($msg) Write-Host "[X] $msg" -ForegroundColor Red }

function Install-Ollama {
    if (Get-Command ollama -ErrorAction SilentlyContinue) {
        Write-Ok "Ollama zaten kurulu"
        return
    }
    Write-Log "Ollama kuruluyor..."
    $installerUrl = "https://ollama.com/download/OllamaSetup.exe"
    $installerPath = "$env:TEMP\OllamaSetup.exe"

    try {
        Invoke-WebRequest -Uri $installerUrl -OutFile $installerPath -UseBasicParsing
        Write-Log "Installer indirildi, calistiliyor (kullanici etkilesimi gerekebilir)..."
        Start-Process -FilePath $installerPath -Wait
        Remove-Item $installerPath -Force -ErrorAction SilentlyContinue

        # PATH refresh
        $env:Path = [System.Environment]::GetEnvironmentVariable("Path", "Machine") + ";" +
                    [System.Environment]::GetEnvironmentVariable("Path", "User")

        Write-Ok "Ollama kuruldu"
    } catch {
        Write-Err "Ollama kurulumu basarisiz: $_"
        exit 1
    }
}

function Start-OllamaService {
    $proc = Get-Process ollama -ErrorAction SilentlyContinue
    if ($proc) {
        Write-Ok "Ollama calisiyor"
        return
    }
    Write-Log "Ollama baslatiliyor..."
    $ollamaPath = (Get-Command ollama).Source
    Start-Process -FilePath $ollamaPath -ArgumentList "serve" -WindowStyle Hidden
    Start-Sleep -Seconds 4
    Write-Ok "Ollama aktif"
}

function Pull-Models {
    Write-Log "Qwen3.6:35b cekiliyor (~23GB, sure alabilir)..."
    & ollama pull qwen3.6:35b
    if ($LASTEXITCODE -eq 0) {
        Write-Ok "qwen3.6:35b hazir"
    } else {
        Write-Err "Model indirilemedi"
    }

    Write-Log "Kul fine-tuned model kontrol..."
    & ollama pull webstree-kul:35b 2>&1 | Out-Null
    if ($LASTEXITCODE -eq 0) {
        Write-Ok "webstree-kul:35b hazir (fine-tuned)"
    } else {
        Write-Warn "Kul modeli henuz yayinda degil - qwen3.6:35b kullanilacak"
    }
}

function Install-IdeaiCli {
    $binDir = "$env:USERPROFILE\.local\bin"
    if (-not (Test-Path $binDir)) {
        New-Item -ItemType Directory -Path $binDir -Force | Out-Null
    }

    $cliPath = "$binDir\ideai.ps1"
    @'
param(
    [Parameter(ValueFromRemainingArguments=$true)]
    [string[]]$Query
)
$model = if ($env:IDEAI_MODEL) { $env:IDEAI_MODEL } else { "webstree-kul:35b" }
$list = & ollama list 2>$null
if ($list -notmatch $model) {
    $model = "qwen3.6:35b"
}
if ($Query) {
    & ollama run $model ($Query -join ' ')
} else {
    & ollama run $model
}
'@ | Set-Content -Path $cliPath -Encoding UTF8

    # Batch shortcut (cmd.exe uyumlu)
    $batPath = "$binDir\ideai.bat"
    @"
@echo off
powershell -ExecutionPolicy Bypass -File "$cliPath" %*
"@ | Set-Content -Path $batPath -Encoding ASCII

    # PATH'e ekle (user scope)
    $userPath = [System.Environment]::GetEnvironmentVariable("Path", "User")
    if ($userPath -notlike "*$binDir*") {
        [System.Environment]::SetEnvironmentVariable("Path", "$userPath;$binDir", "User")
        Write-Ok "PATH guncellendi (yeni terminalde aktif olur)"
    }

    Write-Ok "IDEAI CLI: $binDir\ideai.bat"
}

function Install-StartMenu {
    $shortcutPath = "$env:APPDATA\Microsoft\Windows\Start Menu\Programs\Kul IDEAI.lnk"
    $wshShell = New-Object -ComObject WScript.Shell
    $shortcut = $wshShell.CreateShortcut($shortcutPath)
    $shortcut.TargetPath = "cmd.exe"
    $shortcut.Arguments = "/k ""$env:USERPROFILE\.local\bin\ideai.bat"""
    $shortcut.IconLocation = "powershell.exe"
    $shortcut.Description = "Webstree AI - Yerel asistan"
    $shortcut.Save()
    Write-Ok "Start Menu kisayolu olusturuldu"
}

function Create-Config {
    $cfgDir = "$env:APPDATA\ideai"
    if (-not (Test-Path $cfgDir)) {
        New-Item -ItemType Directory -Path $cfgDir -Force | Out-Null
    }

    $config = @{
        version = "1.0.0"
        model = "webstree-kul:35b"
        fallback_model = "qwen3.6:35b"
        ollama_host = "http://127.0.0.1:11434"
        theme = "dark"
        primary_color = "#5d00ff"
        telemetry = $false
        installed_at = (Get-Date -Format "yyyy-MM-ddTHH:mm:ssZ")
        platform = "windows"
        os_version = [System.Environment]::OSVersion.Version.ToString()
    } | ConvertTo-Json -Depth 10

    $config | Set-Content -Path "$cfgDir\config.json" -Encoding UTF8
    Write-Ok "Yapilandirma: $cfgDir\config.json"
}

# ──────── Ana akış ────────
try {
    Write-Banner
    Write-Log "Windows $([System.Environment]::OSVersion.Version)"
    Install-Ollama
    Start-OllamaService
    Pull-Models
    Install-IdeaiCli
    Install-StartMenu
    Create-Config

    Write-Host ""
    Write-Host "═══════════════════════════════════════════════" -ForegroundColor Green
    Write-Host "  OK  Kurulum tamamlandi!" -ForegroundColor Green
    Write-Host "═══════════════════════════════════════════════" -ForegroundColor Green
    Write-Host ""
    Write-Host "Yeni terminal ac veya:" -ForegroundColor White
    Write-Host "  `$env:Path += ';$env:USERPROFILE\.local\bin'" -ForegroundColor Cyan
    Write-Host ""
    Write-Host "Kullanim:" -ForegroundColor White
    Write-Host "  ideai              - interaktif chat" -ForegroundColor Cyan
    Write-Host "  ideai Merhaba      - tek soru" -ForegroundColor Cyan
    Write-Host "  ollama list        - yuklu modeller" -ForegroundColor Cyan
    Write-Host ""
    Write-Host "https://webstree.com/docs/ideai" -ForegroundColor DarkGray
    Write-Host ""
} catch {
    Write-Err "Kurulum hatasi: $_"
    Write-Host $_.ScriptStackTrace -ForegroundColor DarkGray
    exit 1
}