<?php

namespace Pterodactyl\Http\Controllers\Admin\Settings;

use Exception;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\Facades\Notification;
use Illuminate\View\View;
use Illuminate\Http\RedirectResponse;
use Prologue\Alerts\AlertsMessageBag;
use Illuminate\Contracts\Console\Kernel;
use Pterodactyl\Exceptions\DisplayException;
use Pterodactyl\Http\Controllers\Controller;
use Illuminate\Contracts\Encryption\Encrypter;
use Pterodactyl\Notifications\MailTested;
use Pterodactyl\Providers\SettingsServiceProvider;
use Illuminate\Contracts\Config\Repository as ConfigRepository;
use Pterodactyl\Contracts\Repository\SettingsRepositoryInterface;
use Pterodactyl\Http\Requests\Admin\Settings\MailSettingsFormRequest;

class MailController extends Controller
{
    /**
     * @var \Prologue\Alerts\AlertsMessageBag
     */
    private $alert;

    /**
     * @var \Illuminate\Contracts\Config\Repository
     */
    private $config;

    /**
     * @var \Illuminate\Contracts\Encryption\Encrypter
     */
    private $encrypter;

    /**
     * @var \Illuminate\Contracts\Console\Kernel
     */
    private $kernel;

    /**
     * @var \Pterodactyl\Contracts\Repository\SettingsRepositoryInterface
     */
    private $settings;

    /**
     * MailController constructor.
     *
     * @param \Prologue\Alerts\AlertsMessageBag                             $alert
     * @param \Illuminate\Contracts\Config\Repository                       $config
     * @param \Illuminate\Contracts\Encryption\Encrypter                    $encrypter
     * @param \Illuminate\Contracts\Console\Kernel                          $kernel
     * @param \Pterodactyl\Contracts\Repository\SettingsRepositoryInterface $settings
     */
    public function __construct(
        AlertsMessageBag $alert,
        ConfigRepository $config,
        Encrypter $encrypter,
        Kernel $kernel,
        SettingsRepositoryInterface $settings
    ) {
        $this->alert = $alert;
        $this->config = $config;
        $this->encrypter = $encrypter;
        $this->kernel = $kernel;
        $this->settings = $settings;
    }

    /**
     * Render UI for editing mail settings. This UI should only display if
     * the server is configured to send mail using SMTP.
     *
     * @return \Illuminate\View\View
     */
    public function index(): View
    {
        return view('admin.settings.mail', [
            'disabled' => $this->config->get('mail.driver') !== 'smtp',
        ]);
    }

    /**
     * Handle request to update SMTP mail settings.
     *
     * @param \Pterodactyl\Http\Requests\Admin\Settings\MailSettingsFormRequest $request
     * @return \Illuminate\Http\RedirectResponse
     *
     * @throws DisplayException
     * @throws \Pterodactyl\Exceptions\Model\DataValidationException
     * @throws \Pterodactyl\Exceptions\Repository\RecordNotFoundException
     */
    public function update(MailSettingsFormRequest $request): RedirectResponse
    {
        if ($this->config->get('mail.driver') !== 'smtp') {
            throw $this->smtpNotSelectedException();
        }

        $values = $request->normalize();
        if (array_get($values, 'mail:password') === '!e') {
            $values['mail:password'] = '';
        }

        foreach ($values as $key => $value) {
            if (in_array($key, SettingsServiceProvider::getEncryptedKeys()) && ! empty($value)) {
                $value = $this->encrypter->encrypt($value);
            }

            $this->settings->set('settings::' . $key, $value);
        }

        $this->kernel->call('queue:restart');
        $this->alert->success('Mail settings have been updated successfully and the queue worker was restarted to apply these changes.')->flash();

        return redirect()->route('admin.settings.mail');
    }

    /**
     * Submit a request to send a test mail message.
     *
     * @throws DisplayException
     * @param Request $request
     * @return \Illuminate\Http\RedirectResponse
     */
    public function test(Request $request): RedirectResponse
    {
        if ($this->config->get('mail.driver') !== 'smtp') {
            throw $this->smtpNotSelectedException();
        }

        try {
            Log::debug('Sending test message to ' . $request->user()->email);
            Notification::route('mail', $request->user()->email)
                ->notify(new MailTested($request->user()));
        } catch (Exception $exception) {
            $this->alert->danger(trans('base.mail.test_failed'))->flash();
            return redirect()->route('admin.settings.mail');
        }

        $this->alert->success(trans('base.mail.test_succeeded'))->flash();
        return redirect()->route('admin.settings.mail');
    }

    /**
     * Generate a display exception for non-SMTP configurations.
     *
     * @return DisplayException
     */
    private function smtpNotSelectedException() {
        return new DisplayException('This feature is only available if SMTP is the selected email driver for the Panel.');
    }
}