<?php
/**
 * SpectreRoutine.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\Import\Routine;

use FireflyIII\Exceptions\FireflyException;
use FireflyIII\Models\ImportJob;
use FireflyIII\Repositories\ImportJob\ImportJobRepositoryInterface;
use FireflyIII\Support\Import\Routine\Spectre\StageAuthenticatedHandler;
use FireflyIII\Support\Import\Routine\Spectre\StageImportDataHandler;
use FireflyIII\Support\Import\Routine\Spectre\StageNewHandler;
use Log;

/**
 * Class SpectreRoutine
 */
class SpectreRoutine implements RoutineInterface
{

    /** @var ImportJob The import job */
    private $importJob;

    /** @var ImportJobRepositoryInterface Import job repository */
    private $repository;

    /**
     * At the end of each run(), the import routine must set the job to the expected status.
     *
     * The final status of the routine must be "provider_finished".
     *
     * @throws FireflyException
     *
     * @SuppressWarnings(PHPMD.CyclomaticComplexity)
     * @SuppressWarnings(PHPMD.ExcessiveMethodLength)
     */
    public function run(): void
    {
        Log::debug(sprintf('Now in SpectreRoutine::run() with status "%s" and stage "%s".', $this->importJob->status, $this->importJob->stage));
        $valid = ['ready_to_run']; // should be only ready_to_run
        if (in_array($this->importJob->status, $valid, true)) {
            switch ($this->importJob->stage) {
                default:
                    throw new FireflyException(sprintf('SpectreRoutine cannot handle stage "%s".', $this->importJob->stage)); // @codeCoverageIgnore
                case 'new':
                    // list all of the users logins.
                    $this->repository->setStatus($this->importJob, 'running');
                    /** @var StageNewHandler $handler */
                    $handler = app(StageNewHandler::class);
                    $handler->setImportJob($this->importJob);
                    $handler->run();

                    // if count logins is zero, go to authenticate stage
                    if (0 === $handler->getCountLogins()) {
                        $this->repository->setStage($this->importJob, 'do-authenticate');
                        $this->repository->setStatus($this->importJob, 'ready_to_run');

                        return;
                    }
                    // or return to config to select login.
                    $this->repository->setStage($this->importJob, 'choose-login');
                    $this->repository->setStatus($this->importJob, 'need_job_config');
                    break;
                case 'do-authenticate':
                    // set job to require config.
                    $this->repository->setStatus($this->importJob, 'need_job_config');

                    return;
                case 'authenticated':
                    $this->repository->setStatus($this->importJob, 'running');
                    // get accounts from login, store in job.
                    /** @var StageAuthenticatedHandler $handler */
                    $handler = app(StageAuthenticatedHandler::class);
                    $handler->setImportJob($this->importJob);
                    $handler->run();

                    // return to config to select account(s).
                    $this->repository->setStage($this->importJob, 'choose-accounts');
                    $this->repository->setStatus($this->importJob, 'need_job_config');
                    break;
                case 'go-for-import':
                    // user has chosen account mapping. Should now be ready to import data.
                    $this->repository->setStatus($this->importJob, 'running');
                    $this->repository->setStage($this->importJob, 'do_import');
                    /** @var StageImportDataHandler $handler */
                    $handler = app(StageImportDataHandler::class);
                    $handler->setImportJob($this->importJob);
                    $handler->run();
                    $this->repository->setStatus($this->importJob, 'provider_finished');
                    $this->repository->setStage($this->importJob, 'final');
            }
        }
    }

    /**
     * Set the import job.
     *
     * @param ImportJob $importJob
     *
     * @return void
     */
    public function setImportJob(ImportJob $importJob): void
    {
        $this->importJob  = $importJob;
        $this->repository = app(ImportJobRepositoryInterface::class);
        $this->repository->setUser($importJob->user);
    }

}