<?php

namespace Comcast\PhpLegalLicenses\Console;

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

class GenerateCommand extends DependencyLicenseCommand
{
	/** @var bool */
	private $hideVersion = false;
	private $toCsv = false;


	/**
	 * Configure the command options.
	 *
	 * @return void
	 */
	protected function configure()
	{
		$this
		    ->setName('generate')
		    ->setDescription('Generate Licenses file from project dependencies.')
		    ->addOption('hide-version', 'hv', InputOption::VALUE_NONE, 'Hide dependency version')
		    ->addOption('csv', null, InputOption::VALUE_NONE, 'Output csv format');
	}


	/**
	 * 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)
	{
		$this->hideVersion = $input->getOption('hide-version');
		$this->toCsv = $input->getOption('csv');
		$dependencies = $this->getDependencyList();

		$output->writeln('<info>Generating Licenses file...</info>');
		if ($this->toCsv) {

		    $this->generateLicensesCSV($dependencies);
		} else {

		    $this->generateLicensesText($dependencies);
		}
		$output->writeln('<info>Done!</info>');

		return 0;
	}


	/**
	 * Generates Licenses Text using packages retrieved from composer.lock file.
	 *
	 * @param array $dependencies
	 *
	 * @return void
	 */
	protected function generateLicensesText($dependencies)
	{
		$text = $this->getBoilerplate();

		foreach ($dependencies as $dependency) {
		    $text .= $this->getTextForDependency($dependency);
		}

		file_put_contents('licenses.md', $text);
	}


	protected function generateLicensesCSV($dependencies)
	{
		$fp = fopen('licenses.csv', 'w');
		$title = ['name', 'version', 'source', 'license description'];

		fputcsv($fp, $title);
		foreach ($dependencies as $dependency) {
		    $dependencyLists = [
		        $dependency['name'],
		        $this->hideVersion ? '' : $dependency['version'],
		        $dependency['source']['url'],
		        $this->getTextForDependency($dependency),
		    ];
		    fputcsv($fp, $dependencyLists);
		}
		fclose($fp);
	}


	/**
	 * Returns Boilerplate text for the Licences File.
	 *
	 * @return string
	 */
	protected function getBoilerplate()
	{
		return "# Project Licenses\nThis file was generated by the [PHP Legal Licenses](https://github.com/Comcast/php-legal-licenses) utility. It contains the name, version and commit sha, description, homepage, and license information for every dependency in this project.\n\n## Dependencies\n\n";
	}


	/**
	 * Retrieves text containing version, sha, and license information for the specified dependency.
	 *
	 * @param array $dependency
	 *
	 * @return string
	 */
	protected function getTextForDependency($dependency)
	{
		$name = $dependency['name'];
		$description = isset($dependency['description']) ? $dependency['description'] : 'Not configured.';
		$version = $dependency['version'];
		$homepage = isset($dependency['homepage']) ? $dependency['homepage'] : 'Not configured.';
		$sha = isset($dependency['source']) ? str_split($dependency['source']['reference'], 7)[0] : 'no sha';
		$licenseNames = isset($dependency['license']) ? implode(', ', $dependency['license']) : 'Not configured.';
		$license = $this->getFullLicenseText($name);

		return $this->generateDependencyText($name, $description, $version, $homepage, $sha, $licenseNames, $license);
	}


	/**
	 * Retrieves full license text for a dependency from the vendor directory.
	 *
	 * @param string $name
	 *
	 * @return string
	 */
	protected function getFullLicenseText($name)
	{
		$path = getcwd()."/vendor/$name/";
		$filenames = ['LICENSE.txt', 'LICENSE.md', 'LICENSE', 'license.txt', 'license.md', 'license', 'LICENSE-2.0.txt'];

		foreach ($filenames as $filename) {
		    $text = @file_get_contents($path.$filename);
		    if ($text) {
		        return $text;
		    }
		}

		return 'Full license text not found in dependency source.';
	}


	/**
	 * Generates Dependency Text based on boilerplate.
	 *
	 * @param string $name
	 * @param string $description
	 * @param string $version
	 * @param string $homepage
	 * @param string $sha
	 * @param string $licenseNames
	 * @param string $license
	 *
	 * @return string
	 */
	protected function generateDependencyText($name, $description, $version, $homepage, $sha, $licenseNames, $license)
	{
		return "### $name ".($this->hideVersion ? '' : "(Version $version | $sha)")."\n$description\nHomepage: $homepage\nLicenses Used: $licenseNames\n$license\n\n";
	}
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----Njg2NjkyMzQ2OTE5NjU1MiA2MjQ4NzQ4Nzg5ODc5NzQ5IDQ2NjQ5MDc0NjgwMDI5OTg=