<?php

/*
 * This file is part of Flarum.
 *
 * For detailed copyright and license information, please view the
 * LICENSE file that was distributed with this source code.
 */

namespace Flarum\User\Command;

use Flarum\Http\UrlGenerator;
use Flarum\Mail\Job\SendRawEmailJob;
use Flarum\Settings\SettingsRepositoryInterface;
use Flarum\User\PasswordToken;
use Flarum\User\UserRepository;
use Illuminate\Contracts\Queue\Queue;
use Illuminate\Contracts\Validation\Factory;
use Illuminate\Database\Eloquent\ModelNotFoundException;
use Illuminate\Validation\ValidationException;
use Symfony\Contracts\Translation\TranslatorInterface;

class RequestPasswordResetHandler
{
    /**
     * @var UserRepository
     */
    protected $users;

    /**
     * @var SettingsRepositoryInterface
     */
    protected $settings;

    /**
     * @var Queue
     */
    protected $queue;

    /**
     * @var UrlGenerator
     */
    protected $url;

    /**
     * @var TranslatorInterface
     */
    protected $translator;

    /**
     * @var Factory
     */
    protected $validatorFactory;

    /**
     * @param UserRepository $users
     * @param SettingsRepositoryInterface $settings
     * @param Queue $queue
     * @param UrlGenerator $url
     * @param TranslatorInterface $translator
     * @param Factory $validatorFactory
     */
    public function __construct(
        UserRepository $users,
        SettingsRepositoryInterface $settings,
        Queue $queue,
        UrlGenerator $url,
        TranslatorInterface $translator,
        Factory $validatorFactory
    ) {
        $this->users = $users;
        $this->settings = $settings;
        $this->queue = $queue;
        $this->url = $url;
        $this->translator = $translator;
        $this->validatorFactory = $validatorFactory;
    }

    /**
     * @param RequestPasswordReset $command
     * @return \Flarum\User\User
     * @throws ModelNotFoundException
     */
    public function handle(RequestPasswordReset $command)
    {
        $email = $command->email;

        $validation = $this->validatorFactory->make(
            compact('email'),
            ['email' => 'required|email']
        );

        if ($validation->fails()) {
            throw new ValidationException($validation);
        }

        $user = $this->users->findByEmail($email);

        if (! $user) {
            throw new ModelNotFoundException;
        }

        $token = PasswordToken::generate($user->id);
        $token->save();

        $data = [
            'username' => $user->display_name,
            'url' => $this->url->to('forum')->route('resetPassword', ['token' => $token->token]),
            'forum' => $this->settings->get('forum_title'),
        ];

        $body = $this->translator->trans('core.email.reset_password.body', $data);
        $subject = $this->translator->trans('core.email.reset_password.subject');

        $this->queue->push(new SendRawEmailJob($user->email, $subject, $body));

        return $user;
    }
}