<?php

declare(strict_types=1);
/**
 * @copyright Copyright (c) 2023 Robin Appelman <robin@icewind.nl>
 *
 * @license GNU AGPL version 3 or any later version
 *
 * 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 <http://www.gnu.org/licenses/>.
 *
 */

namespace OC\Core\Command\Info;


use OCP\Files\File;
use OCP\Util;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

class Get extends Command {
	private FileUtils $fileUtils;

	public function __construct(FileUtils $fileUtils) {
		$this->fileUtils = $fileUtils;
		parent::__construct();
	}

	protected function configure(): void {
		$this
			->setName('info:file:get')
			->setDescription('Get the contents of a file')
			->addArgument('file', InputArgument::REQUIRED, "File id or path")
			->addOption('output', 'o', InputOption::VALUE_REQUIRED, "Target file to output to");
	}

	public function execute(InputInterface $input, OutputInterface $output): int {
		$fileInput = $input->getArgument('file');
		$outputName = $input->getOption('output');
		$node = $this->fileUtils->getNode($fileInput);

		if (!$node) {
			$output->writeln("<error>file $fileInput not found</error>");
			return 1;
		}

		if ($node instanceof File) {
			$isTTY = stream_isatty(STDOUT);
			if ($outputName === null && $isTTY && $node->getMimePart() !== 'text') {
				$output->writeln([
					"<error>Warning: Binary output can mess up your terminal</error>",
					"         Use '--output STDOUT' to output it to the terminal anyway",
					"         Or '--output <FILE>' to save to a file instead"
				]);
				return 1;
			}
			$source = $node->fopen('r');
			$target = (!$outputName || strtolower($outputName) === 'stdout') ? STDOUT : fopen($outputName, 'w');
			stream_copy_to_stream($source, $target);
			return 0;
		} else {
			$output->writeln("<error>$fileInput is a directory</error>");
			return 1;
		}
	}

}