<?php
/**
 * DebugController.php
 * Copyright (c) 2017 thegrumpydictator@gmail.com
 *
 * This file is part of Firefly III.
 *
 * Firefly III is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Firefly III is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Firefly III. If not, see <http://www.gnu.org/licenses/>.
 */

declare(strict_types=1);

namespace FireflyIII\Http\Controllers;

use Artisan;
use Carbon\Carbon;
use DB;
use Exception;
use FireflyIII\Exceptions\FireflyException;
use FireflyIII\Http\Middleware\IsDemoUser;
use Illuminate\Http\Request;
use Illuminate\Routing\Route;
use Log;
use Monolog\Handler\RotatingFileHandler;
use Route as RouteFacade;

/**
 * Class DebugController
 *
 * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
 */
class DebugController extends Controller
{
    /**
     * HomeController constructor.
     */
    public function __construct()
    {
        parent::__construct();
        $this->middleware(IsDemoUser::class);
    }

    /**
     * @throws FireflyException
     */
    public function displayError(): void
    {
        Log::debug('This is a test message at the DEBUG level.');
        Log::info('This is a test message at the INFO level.');
        Log::notice('This is a test message at the NOTICE level.');
        Log::warning('This is a test message at the WARNING level.');
        Log::error('This is a test message at the ERROR level.');
        Log::critical('This is a test message at the CRITICAL level.');
        Log::alert('This is a test message at the ALERT level.');
        Log::emergency('This is a test message at the EMERGENCY level.');
        throw new FireflyException('A very simple test error.');
    }

    /**
     * @param Request $request
     *
     * @return \Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector
     */
    public function flush(Request $request)
    {
        app('preferences')->mark();
        $request->session()->forget(['start', 'end', '_previous', 'viewRange', 'range', 'is_custom_range']);
        Log::debug('Call cache:clear...');
        Artisan::call('cache:clear');
        Log::debug('Call config:clear...');
        Artisan::call('config:clear');
        Log::debug('Call route:clear...');
        Artisan::call('route:clear');
        Log::debug('Call twig:clean...');
        try {
            Artisan::call('twig:clean');
            // @codeCoverageIgnoreStart
        } catch (Exception $e) {
            // don't care
            Log::debug(sprintf('Called twig:clean: %s', $e->getMessage()));
        }
        // @codeCoverageIgnoreEnd
        Log::debug('Call view:clear...');
        Artisan::call('view:clear');
        Log::debug('Done! Redirecting...');

        return redirect(route('index'));
    }

    /**
     * @param Request $request
     *
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
     *
     * @SuppressWarnings(PHPMD.CyclomaticComplexity)
     * @SuppressWarnings(PHPMD.ExcessiveMethodLength)
     */
    public function index(Request $request)
    {
        $search  = ['~', '#'];
        $replace = ['\~', '# '];

        $phpVersion     = str_replace($search, $replace, PHP_VERSION);
        $phpOs          = str_replace($search, $replace, PHP_OS);
        $interface      = PHP_SAPI;
        $now            = Carbon::create()->format('Y-m-d H:i:s e');
        $extensions     = implode(', ', get_loaded_extensions());
        $drivers        = implode(', ', DB::availableDrivers());
        $currentDriver  = DB::getDriverName();
        $userAgent      = $request->header('user-agent');
        $isSandstorm    = var_export(env('IS_SANDSTORM', 'unknown'), true);
        $isDocker       = var_export(env('IS_DOCKER', 'unknown'), true);
        $toSandbox      = var_export(env('BUNQ_USE_SANDBOX', 'unknown'), true);
        $trustedProxies = env('TRUSTED_PROXIES', '(none)');
        $displayErrors  = ini_get('display_errors');
        $errorReporting = $this->errorReporting((int)ini_get('error_reporting'));
        $appEnv         = env('APP_ENV', '');
        $appDebug       = var_export(env('APP_DEBUG', false), true);
        $appLog         = env('APP_LOG', '');
        $appLogLevel    = env('APP_LOG_LEVEL', '');
        $packages       = $this->collectPackages();
        $cacheDriver    = env('CACHE_DRIVER', 'unknown');

        // set languages, see what happens:
        $original       = setlocale(LC_ALL, 0);
        $localeAttempts = [];
        $parts          = explode(',', (string)trans('config.locale'));
        foreach ($parts as $code) {
            $code                  = trim($code);
            $localeAttempts[$code] = var_export(setlocale(LC_ALL, $code), true);
        }
        setlocale(LC_ALL, $original);

        // get latest log file:
        $logger     = Log::driver();
        $handlers   = $logger->getHandlers();
        $logContent = '';
        foreach ($handlers as $handler) {
            if ($handler instanceof RotatingFileHandler) {
                $logFile = $handler->getUrl();
                if (null !== $logFile) {
                    try {
                        $logContent = file_get_contents($logFile);
                        // @codeCoverageIgnoreStart
                    } catch (Exception $e) {
                        // don't care
                        Log::debug(sprintf('Could not read log file. %s', $e->getMessage()));
                    }
                    // @codeCoverageIgnoreEnd
                }
            }
        }
        // last few lines
        $logContent = 'Truncated from this point <----|' . substr($logContent, -8192);

        return view(
            'debug', compact(
                       'phpVersion', 'extensions', 'localeAttempts', 'appEnv', 'appDebug', 'appLog', 'appLogLevel', 'now', 'packages', 'drivers',
                       'currentDriver',
                       'userAgent', 'displayErrors', 'errorReporting', 'phpOs', 'interface', 'logContent', 'cacheDriver', 'isDocker', 'isSandstorm',
                       'trustedProxies',
                       'toSandbox'
                   )
        );
    }

    /**
     * @return string
     *
     * @SuppressWarnings(PHPMD.CyclomaticComplexity)
     */
    public function routes(): string
    {
        $set    = RouteFacade::getRoutes();
        $ignore = ['chart.', 'javascript.', 'json.', 'report-data.', 'popup.', 'debugbar.', 'attachments.download', 'attachments.preview',
                   'bills.rescan', 'budgets.income', 'currencies.def', 'error', 'flush', 'help.show', 'import.file',
                   'login', 'logout', 'password.reset', 'profile.confirm-email-change', 'profile.undo-email-change',
                   'register', 'report.options', 'routes', 'rule-groups.down', 'rule-groups.up', 'rules.up', 'rules.down',
                   'rules.select', 'search.search', 'test-flash', 'transactions.link.delete', 'transactions.link.switch',
                   'two-factor.lost', 'reports.options', 'debug', 'import.create-job', 'import.download', 'import.start', 'import.status.json',
                   'preferences.delete-code', 'rules.test-triggers', 'piggy-banks.remove-money', 'piggy-banks.add-money',
                   'accounts.reconcile.transactions', 'accounts.reconcile.overview', 'export.download',
                   'transactions.clone', 'two-factor.index', 'api.v1', 'installer.', 'attachments.view', 'import.create',
                   'import.job.download', 'import.job.start', 'import.job.status.json', 'import.job.store', 'recurring.events',
                   'recurring.suggest',
        ];
        $return = '&nbsp;';
        /** @var Route $route */
        foreach ($set as $route) {
            $name = (string)$route->getName();
            if (\in_array('GET', $route->methods(), true)) {
                $found = false;
                foreach ($ignore as $string) {
                    if (!(false === stripos($name, $string))) {
                        $found = true;
                        break;
                    }
                }
                if (false === $found) {
                    $return .= 'touch ' . $route->getName() . '.md;';
                }
            }
        }

        return $return;
    }

    /**
     * @param Request $request
     *
     * @return \Illuminate\Http\RedirectResponse|\Illuminate\Routing\Redirector
     */
    public function testFlash(Request $request)
    {
        $request->session()->flash('success', 'This is a success message.');
        $request->session()->flash('info', 'This is an info message.');
        $request->session()->flash('warning', 'This is a warning.');
        $request->session()->flash('error', 'This is an error!');

        return redirect(route('home'));
    }

    /**
     * Some common combinations.
     *
     * @param int $value
     *
     * @return string
     */
    protected function errorReporting(int $value): string
    {
        $array  = [
            -1                                                             => 'ALL errors',
            E_ALL & ~E_NOTICE & ~E_STRICT & ~E_DEPRECATED                  => 'E_ALL & ~E_NOTICE & ~E_STRICT & ~E_DEPRECATED',
            E_ALL                                                          => 'E_ALL',
            E_ALL & ~E_DEPRECATED & ~E_STRICT                              => 'E_ALL & ~E_DEPRECATED & ~E_STRICT',
            E_ALL & ~E_NOTICE                                              => 'E_ALL & ~E_NOTICE',
            E_ALL & ~E_NOTICE & ~E_STRICT                                  => 'E_ALL & ~E_NOTICE & ~E_STRICT',
            E_COMPILE_ERROR | E_RECOVERABLE_ERROR | E_ERROR | E_CORE_ERROR => 'E_COMPILE_ERROR|E_RECOVERABLE_ERROR|E_ERROR|E_CORE_ERROR',
        ];
        $result = (string)$value;
        if (isset($array[$value])) {
            $result = $array[$value];
        }

        return $result;
    }

    /**
     * @return array
     */
    private function collectPackages(): array
    {
        $packages = [];
        $file     = \dirname(__DIR__, 3) . '/vendor/composer/installed.json';
        if (!(false === $file) && file_exists($file)) {
            // file exists!
            $content = file_get_contents($file);
            $json    = json_decode($content, true);
            foreach ($json as $package) {
                $packages[]
                    = [
                    'name'    => $package['name'],
                    'version' => $package['version'],
                ];
            }
        }

        return $packages;
    }
}