<?php

/*
 * This file is part of Composer.
 *
 * (c) Nils Adermann <naderman@naderman.de>
 *     Jordi Boggiano <j.boggiano@seld.be>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Composer\Command;

use Composer\Config;
use Composer\Factory;
use Composer\Installer;
use Composer\Installer\ProjectInstaller;
use Composer\IO\IOInterface;
use Composer\Repository\ComposerRepository;
use Composer\Repository\CompositeRepository;
use Composer\Repository\FilesystemRepository;
use Composer\Repository\NotifiableRepositoryInterface;
use Composer\Repository\InstalledFilesystemRepository;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Finder\Finder;
use Composer\Json\JsonFile;
use Composer\Util\Filesystem;
use Composer\Util\RemoteFilesystem;
use Composer\Package\Version\VersionParser;

/**
 * Install a package as new project into new directory.
 *
 * @author Benjamin Eberlei <kontakt@beberlei.de>
 */
class CreateProjectCommand extends Command
{
    protected function configure()
    {
        $this
            ->setName('create-project')
            ->setDescription('Create new project from a package into given directory.')
            ->setDefinition(array(
                new InputArgument('package', InputArgument::REQUIRED, 'Package name to be installed'),
                new InputArgument('directory', InputArgument::OPTIONAL, 'Directory where the files should be created'),
                new InputArgument('version', InputArgument::OPTIONAL, 'Version, will defaults to latest'),
                new InputOption('prefer-source', null, InputOption::VALUE_NONE, 'Forces installation from package sources when possible, including VCS information.'),
                new InputOption('prefer-dist', null, InputOption::VALUE_NONE, 'Forces installation from package dist even for dev versions.'),
                new InputOption('repository-url', null, InputOption::VALUE_REQUIRED, 'Pick a different repository url to look for the package.'),
                new InputOption('dev', null, InputOption::VALUE_NONE, 'Whether to install dependencies for development.'),
                new InputOption('no-custom-installers', null, InputOption::VALUE_NONE, 'Whether to disable custom installers.'),
                new InputOption('no-scripts', null, InputOption::VALUE_NONE, 'Whether to prevent execution of all defined scripts in the root package.'),
                new InputOption('keep-vcs', null, InputOption::VALUE_NONE, 'Whether to prevent deletion vcs folder.'),
            ))
            ->setHelp(<<<EOT
The <info>create-project</info> command creates a new project from a given
package into a new directory. You can use this command to bootstrap new
projects or setup a clean version-controlled installation
for developers of your project.

<info>php composer.phar create-project vendor/project target-directory [version]</info>

To setup a developer workable version you should create the project using the source
controlled code by appending the <info>'--prefer-source'</info> flag. Also, it is
advisable to install all dependencies required for development by appending the
<info>'--dev'</info> flag.

To install a package from another repository than the default one you
can pass the <info>'--repository-url=http://myrepository.org'</info> flag.

EOT
            )
        ;
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        return $this->installProject(
            $this->getIO(),
            $input->getArgument('package'),
            $input->getArgument('directory'),
            $input->getArgument('version'),
            $input->getOption('prefer-source'),
            $input->getOption('prefer-dist'),
            $input->getOption('dev'),
            $input->getOption('repository-url'),
            $input->getOption('no-custom-installers'),
            $input->getOption('no-scripts'),
            $input->getOption('keep-vcs')
        );
    }

    public function installProject(IOInterface $io, $packageName, $directory = null, $packageVersion = null, $preferSource = false, $preferDist = false, $installDevPackages = false, $repositoryUrl = null, $disableCustomInstallers = false, $noScripts = false, $keepVcs = false)
    {
        $config = Factory::createConfig();

        $dm = $this->createDownloadManager($io, $config);
        if ($preferSource) {
            $dm->setPreferSource(true);
        }

        if (null === $repositoryUrl) {
            $sourceRepo = new CompositeRepository(Factory::createDefaultRepositories($io, $config));
        } elseif ("json" === pathinfo($repositoryUrl, PATHINFO_EXTENSION)) {
            $sourceRepo = new FilesystemRepository(new JsonFile($repositoryUrl, new RemoteFilesystem($io)));
        } elseif (0 === strpos($repositoryUrl, 'http')) {
            $sourceRepo = new ComposerRepository(array('url' => $repositoryUrl), $io, $config);
        } else {
            throw new \InvalidArgumentException("Invalid repository url given. Has to be a .json file or an http url.");
        }

        $candidates = array();
        $name = strtolower($packageName);

        if ($packageVersion === null) {
            $sourceRepo->filterPackages(function ($package) use (&$candidates, $name) {
                if ($package->getName() === $name) {
                    $candidates[] = $package;
                }
            });
        } else {
            $parser = new VersionParser();
            $version = $parser->normalize($packageVersion);
            $sourceRepo->filterPackages(function ($package) use (&$candidates, $name, $version) {
                if ($package->getName() === $name && $version === $package->getVersion()) {
                    $candidates[] = $package;

                    return false;
                }
            });
        }

        if (!$candidates) {
            throw new \InvalidArgumentException("Could not find package $packageName" . ($packageVersion ? " with version $packageVersion." : ''));
        }

        if (null === $directory) {
            $parts = explode("/", $packageName, 2);
            $directory = getcwd() . DIRECTORY_SEPARATOR . array_pop($parts);
        }

        // select highest version if we have many
        $package = $candidates[0];
        foreach ($candidates as $candidate) {
            if (version_compare($package->getVersion(), $candidate->getVersion(), '<')) {
                $package = $candidate;
            }
        }
        unset($candidates);

        $io->write('<info>Installing ' . $package->getName() . ' (' . VersionParser::formatVersion($package, false) . ')</info>');

        if ($disableCustomInstallers) {
            $io->write('<info>Custom installers have been disabled.</info>');
        }

        if (0 === strpos($package->getPrettyVersion(), 'dev-') && in_array($package->getSourceType(), array('git', 'hg'))) {
            $package->setSourceReference(substr($package->getPrettyVersion(), 4));
        }

        $dm->setPreferSource($preferSource)
            ->setPreferDist($preferDist);
        $projectInstaller = new ProjectInstaller($directory, $dm);
        $projectInstaller->install(new InstalledFilesystemRepository(new JsonFile('php://memory')), $package);
        if ($package->getRepository() instanceof NotifiableRepositoryInterface) {
            $package->getRepository()->notifyInstall($package);
        }

        $io->write('<info>Created project in ' . $directory . '</info>');
        chdir($directory);

        putenv('COMPOSER_ROOT_VERSION='.$package->getPrettyVersion());

        // clean up memory
        unset($dm, $config, $projectInstaller, $sourceRepo, $package);

        // install dependencies of the created project
        $composer = Factory::create($io);
        $installer = Installer::create($io, $composer);

        $installer->setPreferSource($preferSource)
            ->setPreferDist($preferDist)
            ->setDevMode($installDevPackages)
            ->setRunScripts( ! $noScripts);

        if ($disableCustomInstallers) {
            $installer->disableCustomInstallers();
        }

        $installer->run();

        if (!$keepVcs && (
            !$io->isInteractive() ||
            $io->askConfirmation('<info>Do you want to remove the exisitng VCS (.git, .svn..) history?</info> [<comment>Y,n</comment>]? ', true)
            )
        ) {
            $finder = new Finder();
            $finder->depth(1)->directories()->in(getcwd())->ignoreVCS(false)->ignoreDotFiles(false);
            foreach (array('.svn', '_svn', 'CVS', '_darcs', '.arch-params', '.monotone', '.bzr', '.git', '.hg') as $vcsName) {
                $finder->name($vcsName);
            }

            try {
                $fs = new Filesystem();
                foreach (iterator_to_array($finder) as $dir) {
                    if (!$fs->removeDirectory($dir)) {
                        throw new \RuntimeException('Could not remove '.$dir);
                    }
                }
            } catch (\Exception $e) {
                $io->write('<error>An error occured while removing the VCS metadata: '.$e->getMessage().'</error>');
            }
        }
    }

    protected function createDownloadManager(IOInterface $io, Config $config)
    {
        $factory = new Factory();

        return $factory->createDownloadManager($io, $config);
    }
}