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Edit File: CountryService.php

<?php

namespace App\Services;

use App\Models\Country;
use App\Models\{Delegate, User, Provider};

class CountryService extends BaseService
{
    public function __construct()
    {
        parent::__construct(Country::class);
    }

public function getFlags()
    {
        $flags = [];
        foreach (\File::files(public_path('admin/assets/flags/png')) as $path) {
            $file = pathinfo($path);
            $flags[] =  $file['filename'] . '.' . $file['extension'];
        }
        return $flags;
    }

public function getAllCountries()
    {
        return $this->model::all();
    }

public function getCountriesWithCity()
    {
        return $this->model::with('cities')->latest()->get();
    }

public function delete($id)
    {
        $country = $this->model::findOrFail($id);

$users = User::where('country_code', 'LIKE', '%' . fixPhone($country->key) . '%')->exists();
        $providers = Provider::where('country_code', 'LIKE', '%' . fixPhone($country->key) . '%')->exists();
        $delegates = Delegate::where('country_code', 'LIKE', '%' . fixPhone($country->key) . '%')->exists();
        $city = $country->cities()->exists();
        if ($users || $providers || $delegates) {
            return ['key' => 'error', 'msg' => __('admin.country_related_with_users')];
        }
        if ($city) {
            return ['key' => 'error', 'msg' => __('admin.country_related_with_cities')];
        }

$country->delete();

return ['key' => 'success', 'msg' => __('admin.deleted_successfully')];
    }

public function deleteAll($request): array
    {
        $requestIds = json_decode($request['data']);
        $has_users = false;
        $has_cities = false;

foreach (array_column($requestIds, 'id') as $id) {
            $country = $this->model::findOrFail($id);
            $users = User::where('country_code', 'LIKE', '%' . fixPhone($country->key) . '%')->exists();
            $providers = Provider::where('country_code', 'LIKE', '%' . fixPhone($country->key) . '%')->exists();
            $delegates = Delegate::where('country_code', 'LIKE', '%' . fixPhone($country->key) . '%')->exists();
            $city = $country->cities()->exists();
            if ($city) {
                $has_cities = true;
                break;
            }
            if ($users || $providers || $delegates) {
                $has_users = true;
                break;
            } else {
                $country->delete();
            }
        }
        return [
            'key' => $has_users ? 'error' : 'success',
            'msg' => !$has_users && !$has_cities ?  __('admin.deleted_successfully') : __('admin.country_related_with_users_or_cities')
        ];
    }
}

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