<?php

namespace App\Http\Controllers\Api;

use App\Models\Preferences;
use Symfony\Component\HttpFoundation\Response;

class PreferencesController extends BaseApiController
{
    protected Preferences $preferences;

    public function __construct()
    {
        parent::__construct();
        $this->preferences = model(Preferences::class);
    }

    public function index()
    {
        $user = $this->getCurrentUser();
        if (!$user) {
            return $this->respondError('Authentication required', Response::HTTP_UNAUTHORIZED);
        }

        try {
            $preferences = $this->preferences->newQuery()
                ->where('user_id', $user->id)
                ->first();

            if (!$preferences) {
                $preferences = [
                    'notification_email' => 1,
                    'notification_sms'   => 1,
                    'theme'              => 'light',
                    'language'           => 'en',
                ];
            }

            $styleConfig = config('Style');
            $preferences['style_color'] = session()->get('style_color') ?? ($styleConfig->defaultStyle ?? 'blue');
            $preferences['menu_color']  = session()->get('menu_color') ?? ($styleConfig->defaultMenu ?? 'white');

            return $this->success($preferences, 'Preferences retrieved successfully');
        } catch (\Throwable $e) {
            log_message('error', 'Preferences retrieval error: ' . $e->getMessage());
            return $this->respondError('Failed to retrieve preferences', Response::HTTP_INTERNAL_SERVER_ERROR);
        }
    }

    public function update($id = null)
    {
        $user = $this->getCurrentUser();
        if (!$user) {
            return $this->respondError('Authentication required', Response::HTTP_UNAUTHORIZED);
        }

        $data = $this->payloadData();
        if (empty($data)) {
            return $this->error('Invalid request data', Response::HTTP_BAD_REQUEST);
        }

        $styleConfig = config('Style');
        $styleOptions = implode(',', array_keys($styleConfig->stylePalettes ?? []));
        $menuOptions  = implode(',', array_keys($styleConfig->menuPalettes ?? []));

        $rules = [
            'notification_email' => 'permit_empty|in_list[0,1]',
            'notification_sms'   => 'permit_empty|in_list[0,1]',
            'theme'              => 'permit_empty|in_list[light,dark]',
            'language'           => 'permit_empty|in_list[en,fr,es]',
            'style_color'        => $styleOptions ? 'permit_empty|in_list[' . $styleOptions . ']' : 'permit_empty',
            'menu_color'         => $menuOptions ? 'permit_empty|in_list[' . $menuOptions . ']' : 'permit_empty',
        ];

        $errors = $this->validateRequest($data, $rules);
        if (!empty($errors)) {
            return $this->respondValidationError($errors);
        }

        try {
            $existing = $this->preferences->newQuery()
                ->where('user_id', $user->id)
                ->first();

            $prefData = [
                'user_id'             => $user->id,
                'notification_email'  => $data['notification_email'] ?? 1,
                'notification_sms'    => $data['notification_sms'] ?? 1,
                'theme'               => $data['theme'] ?? 'light',
                'language'            => $data['language'] ?? 'en',
            ];

            if ($existing) {
                $this->preferences->update($existing['id'], $prefData);
                $preferences = $this->preferences->find($existing['id']);
            } else {
                $pref = $this->preferences->create($prefData);
                $preferences = $pref instanceof \Illuminate\Database\Eloquent\Model ? $pref->toArray() : $pref;
            }

            if (isset($data['style_color'])) {
                session()->put('style_color', $data['style_color']);
            }
            if (isset($data['menu_color'])) {
                session()->put('menu_color', $data['menu_color']);
            }

            return $this->success($preferences, 'Preferences updated successfully');
        } catch (\Throwable $e) {
            log_message('error', 'Preferences update error: ' . $e->getMessage());
            return $this->respondError('Failed to update preferences', Response::HTTP_INTERNAL_SERVER_ERROR);
        }
    }
}