<?php
declare(strict_types=1);
/**
 * Import.php
 * Copyright (c) 2020 james@firefly-iii.org
 *
 * This file is part of the Firefly III CSV importer
 * (https://github.com/firefly-iii/csv-importer).
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

namespace App\Console\Commands;

use App\Console\HaveAccess;
use App\Console\StartImport;
use App\Console\VerifyJSON;
use App\Mail\ImportFinished;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\Mail;
use JsonException;
use Log;

/**
 * Class Import
 */
class Import extends Command
{
    use HaveAccess, VerifyJSON, StartImport;

    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Import a CSV file. Requires the CSV file and the associated configuration file.';
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'importer:import
    {file : The CSV file you want to import}
    {config : The associated configuration file}';

    /**
     * Execute the console command.
     *
     * @return int
     */
    public function handle(): int
    {

        $access = $this->haveAccess();
        if (false === $access) {
            $this->error('Could not connect to your local Firefly III instance.');

            return 1;
        }

        $this->info(sprintf('Welcome to the Firefly III data importer, v%s', config('importer.version')));
        Log::debug(sprintf('Now in %s', __METHOD__));
        $file   = (string) $this->argument('file');
        $config = (string) $this->argument('config');
        if (!file_exists($file) || (file_exists($file) && !is_file($file))) {
            $message = sprintf('The importer can\'t import: CSV file "%s" does not exist or could not be read.', $file);
            $this->error($message);
            Log::error($message);

            return 1;
        }

        if (!file_exists($config) || (file_exists($config) && !is_file($config))) {
            $message = sprintf('The importer can\'t import: configuration file "%s" does not exist or could not be read.', $config);
            $this->error($message);
            Log::error($message);

            return 1;
        }
        $jsonResult = $this->verifyJSON($config);
        if (false === $jsonResult) {
            $message = 'The importer can\'t import: could not decode the JSON in the config file.';
            $this->error($message);

            return 1;
        }
        try {
            $configuration = json_decode(file_get_contents($config), true, 512, JSON_THROW_ON_ERROR);
        } catch (JsonException $e) {
            Log::error($e->getMessage());
            $this->error(sprintf('Invalid JSON in configuration file: %s', $e->getMessage()));

            return 1;
        }

        $this->line('The import routine is about to start.');
        $this->line('This is invisible and may take quite some time.');
        $this->line('Once finished, you will see a list of errors, warnings and messages (if applicable).');
        $this->line('--------');
        $this->line('Running...');
        $csv    = file_get_contents($file);
        $result = $this->startImport($csv, $configuration);
        if (0 === $result) {
            $this->line('Import complete.');
        }
        if (0 !== $result) {
            $this->warn('The import finished with errors.');
        }

        // send mail:
        $log
            = [
            'messages' => $this->messages,
            'warnings' => $this->warnings,
            'errors'   => $this->errors,
        ];

        $send = config('mail.enable_mail_report');
        Log::debug('Log log', $log);
        if (true === $send) {
            Log::debug('SEND MAIL');
            Mail::to(config('mail.destination'))->send(new ImportFinished($log));
        }


        return $result;
    }
}