<?php

namespace App\Http\Controllers;

use App\Models\Setting;
use App\Models\ActivityLog;
use App\Models\Role;
use App\Helpers\WhatsappHelper;
use App\Traits\LogsActivity;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Mail;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Storage;
use Illuminate\Support\Facades\Gate;
use Intervention\Image\Laravel\Facades\Image;

class SettingController extends Controller
{
    use LogsActivity;

    /**
     * Daftar kunci pengaturan yang diizinkan untuk di-update secara massal.
     */
    protected $allowedSettings = [
        'app_name', 
        'app_slogan', 
        'app_version', // Tambahan baru
        'app_address',
        'wa_number',
        'notif_hpl_role_id',
        'notif_inventory_role_id',
        'notif_weight_role_id'
    ];

    public function index()
    {
        Gate::authorize('check-access', ['settings', 'read']);
        $settings = Setting::pluck('value', 'key')->all();
        
        // Tambahkan default jika version belum ada
        if (!isset($settings['app_version'])) {
            $settings['app_version'] = '1.0.0';
        }

        $waStatus = $this->checkWhatsAppService();
        $emailStatus = $this->checkEmailService();
        
        $logs = ActivityLog::with('user')
            ->where('action', 'LIKE', '%SETTING%')
            ->latest()
            ->take(5)
            ->get();

        $roles = Role::orderBy('name')->get(['id','name']);
        return view('pages.admin.settings', compact('settings', 'waStatus', 'emailStatus', 'logs', 'roles'));
    }

    public function update(Request $request)
    {
        Gate::authorize('check-access', ['settings', 'update']);
        $request->validate([
            'app_logo' => 'nullable|image|mimes:png,jpg,jpeg|max:2048',
            'app_favicon' => 'nullable|image|mimes:png,jpg,ico|max:512',
            'app_name' => 'required|string|max:100',
            'app_slogan' => 'nullable|string|max:255',
            'app_version' => 'required|string|max:20', // Validasi versi
        ]);

        // 1. Proses Logo & Favicon
        if ($request->hasFile('app_logo')) {
            $this->uploadAndProcessImage($request->file('app_logo'), 'app_logo', 512);
        }

        if ($request->hasFile('app_favicon')) {
            $this->uploadAndProcessImage($request->file('app_favicon'), 'app_favicon', 128);
        }

        // 2. Update Pengaturan Teks (Hanya yang ada di whitelist)
        foreach ($this->allowedSettings as $key) {
            if ($request->has($key)) {
                Setting::updateOrCreate(['key' => $key], ['value' => $request->get($key)]);
            }
        }

        foreach (['notif_hpl_wa','notif_inventory_expiry_wa','notif_weight_stale_wa','notif_wa_status'] as $notificationKey) {
            Setting::updateOrCreate(
                ['key' => $notificationKey],
                ['value' => $request->boolean($notificationKey) ? 'active' : 'inactive', 'group' => 'notification']
            );
        }

        foreach (['notif_hpl_role_id','notif_inventory_role_id','notif_weight_role_id'] as $roleKey) {
            if ($request->filled($roleKey)) {
                $request->validate([$roleKey => 'exists:roles,id']);
                Setting::updateOrCreate(['key' => $roleKey], ['value' => $request->input($roleKey), 'group' => 'notification']);
            }
        }

        $this->logAction('UPDATED_SETTINGS', null, "Memperbarui identitas dan notifikasi sistem ke versi " . $request->app_version);

        return back()->with('success', 'Konfigurasi ' . $request->app_name . ' berhasil diperbarui!');
    }

    /**
     * Helper Image Processing (Intervention Image v3)
     */
    private function uploadAndProcessImage($file, $key, $size)
    {
        $oldFile = Setting::where('key', $key)->value('value');
        if ($oldFile && Storage::disk('public')->exists($oldFile)) {
            Storage::disk('public')->delete($oldFile);
        }

        $filename = $key . '_' . time() . '.png';
        $path = 'settings/' . $filename;

        // Intervention Image v3 Logic
        $image = Image::read($file);
        $image->cover($size, $size); 
        
        Storage::disk('public')->put($path, (string) $image->toPng());
        Setting::updateOrCreate(['key' => $key], ['value' => $path]);
    }

    private function checkWhatsAppService()
    {
        $provider = strtoupper((string) config('services.whatsapp.provider', 'fonnte'));
        return [
            'active' => WhatsappHelper::configured(),
            'quota' => null,
            'message' => WhatsappHelper::configured() ? "{$provider} dikonfigurasi" : "{$provider} belum dikonfigurasi",
        ];
    }

    private function checkEmailService()
{
    try {
        $transport = Mail::getSymfonyTransport();

        // 1. Cek jika menggunakan driver 'log' (biasanya di localhost)
        if ($transport instanceof \Illuminate\Mail\Transport\LogTransport) {
            return [
                'active' => true, 
                'message' => 'Mail Mode: LOG (Local Development)'
            ];
        }

        // 2. Jika menggunakan SMTP, coba lakukan jabat tangan (handshake)
        if (method_exists($transport, 'start')) {
            $transport->stop();
            $transport->start();
        }

        return ['active' => true, 'message' => 'SMTP Terhubung'];
    } catch (\Exception $e) {
        // Jika gagal konek ke Mailtrap/Gmail, kembalikan status false
        return [
            'active' => false, 
            'message' => 'SMTP Error: ' . $e->getMessage()
        ];
    }
}
}