<?php

namespace bff\auth;

/**
 * Adapted from \Illuminate\Auth\CreatesUserProviders
 * @see https://github.com/illuminate/auth/blob/8.x/LICENSE.md
 */
trait CreatesUserProviders
{
    /**
     * The registered custom provider creators.
     *
     * @var array
     */
    protected $customProviderCreators = [];

    /**
     * Create the user provider implementation for the driver.
     *
     * @param  string|null  $provider
     * @return \Illuminate\Contracts\Auth\UserProvider|null
     *
     * @throws \InvalidArgumentException
     */
    public function createUserProvider($provider = null)
    {
        if (is_null($config = $this->getProviderConfiguration($provider))) {
            return null;
        }

        $driver = ($config['driver'] ?? null);

        if (isset($this->customProviderCreators[$driver])) {
            return call_user_func($this->customProviderCreators[$driver], $this->app, $config);
        }

        switch ($driver) {
            case 'eloquent':
                return $this->createEloquentProvider($config);
            default:
                throw new InvalidArgumentException(
                    "Authentication user provider [{$driver}] is not defined."
                );
        }
    }

    /**
     * Get the user provider configuration.
     *
     * @param  string|null  $provider
     * @return array|null
     */
    protected function getProviderConfiguration($provider)
    {
        if ($provider = $provider ?: $this->getDefaultUserProvider()) {
            return $this->app['config']['auth.providers.' . $provider];
        }
        return null;
    }

    /**
     * Create an instance of the database user provider.
     *
     * @param  array  $config
     * @return \bff\auth\EloquentUserProvider
     */
    protected function createEloquentProvider($config)
    {
        return new EloquentUserProvider($this->app['hash'], $config['model'] ?? '');
    }

    /**
     * Get the default user provider name.
     *
     * @return string
     */
    public function getDefaultUserProvider()
    {
        return $this->app['config']['auth.defaults.provider'];
    }
}