<?php

namespace Comcast\PhpLegalLicenses\Console;

use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

class ShowCommand extends DependencyLicenseCommand
{
	/**
	 * Configure the command options.
	 *
	 * @return void
	 */
	protected function configure()
	{
		$this
		->setName('show')
		->setDescription('Show licenses used by project dependencies.');
	}


	/**
	 * Execute the command.
	 *
	 * @param \Symfony\Component\Console\Input\InputInterface   $input
	 * @param \Symfony\Component\Console\Output\OutputInterface $output
	 *
	 * @return void
	 */
	protected function execute(InputInterface $input, OutputInterface $output)
	{
		$dependencies = $this->getDependencyList();
		$this->outputDependencyLicenses($dependencies, $output);

		return 0;
	}


	/**
	 * Generates Licenses list using packages retrieved from composer.lock file.
	 *
	 * @param array $dependencies
	 *
	 * @return void
	 */
	protected function outputDependencyLicenses($dependencies, $output)
	{
		foreach ($dependencies as $dependency) {
		    $text = $this->getTextForDependency($dependency);
		    $output->writeln($text);
		}
	}


	/**
	 * Retrieves text containing version and license information for the specified dependency.
	 *
	 * @param array $dependency
	 *
	 * @return string
	 */
	protected function getTextForDependency($dependency)
	{
		$name = $dependency['name'];
		$version = $dependency['version'];
		$licenseNames = isset($dependency['license']) ? implode(', ', $dependency['license']) : 'Not configured.';

		return $this->generateDependencyText($name, $version, $licenseNames);
	}


	/**
	 * Generate formatted line detailing the version and license information for a particular dependency.
	 *
	 * @param string $name
	 * @param string $version
	 * @param string $licenceNames
	 *
	 * @return string
	 */
	protected function generateDependencyText($name, $version, $licenseNames)
	{
		return "$name@$version [$licenseNames]";
	}
}
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