hiqdev\composer\config\Plugin

Complexity

Total Complexity

65

Size/Duplication

Total Lines	433
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	10

Test Coverage

Coverage

7.58%

Importance

Changes

0

20 Methods

Rating	Name	Duplication	Size	Complexity
A	activate()	0	5	1
A	onPostAutoloadDump()	0	15	1
A	initAutoload()	0	4	1
A	setPackages()	0	4	1
A	getSubscribedEvents()	0	8	1
A	scanPackages()	0	8	3
C	processPackage()	0	27	7
A	loadDotEnv()	0	7	3
B	addFiles()	0	20	6
A	collectAliases()	0	15	2
B	prepareAliases()	0	24	6
B	preparePath()	0	20	6
A	getPackages()	0	8	2
A	findPackages()	0	17	3
B	iteratePackage()	0	26	4
B	iterateDependencies()	0	16	8
A	showDepsTree()	0	15	4
A	getBaseDir()	0	8	2
A	getVendorDir()	0	9	2
A	getFilesystem()	0	8	2

<?php
/**
 * Composer plugin for config assembling.
 *
 * @link      https://github.com/hiqdev/composer-config-plugin
 * @package   composer-config-plugin
 * @license   BSD-3-Clause
 * @copyright Copyright (c) 2016-2017, HiQDev (http://hiqdev.com/)
 */

namespace hiqdev\composer\config;

use Composer\Composer;
use Composer\EventDispatcher\EventSubscriberInterface;
use Composer\IO\IOInterface;
use Composer\Package\CompletePackageInterface;
use Composer\Package\PackageInterface;
use Composer\Package\RootPackageInterface;
use Composer\Plugin\PluginInterface;
use Composer\Script\Event;
use Composer\Script\ScriptEvents;
use Composer\Util\Filesystem;
use Symfony\Component\Console\Formatter\OutputFormatterStyle;

/**
 * Plugin class.
 *
 * @author Andrii Vasyliev <sol@hiqdev.com>
 */
class Plugin implements PluginInterface, EventSubscriberInterface
{
    const YII2_PACKAGE_TYPE = 'yii2-extension';
    const EXTRA_OPTION_NAME = 'config-plugin';

    /**
     * @var PackageInterface[] the array of active composer packages
     */
    protected $packages;

    /**
     * @var string absolute path to the package base directory
     */
    protected $baseDir;

    /**
     * @var string absolute path to vendor directory
     */
    protected $vendorDir;

    /**
     * @var Filesystem utility
     */
    protected $filesystem;

    /**
     * @var array config name => list of files
     */
    protected $files = [
        'dotenv'  => [],
        'defines' => [],
        'params'  => [],
    ];

    /**
     * @var array package name => configs as listed in `composer.json`
     */
    protected $originalFiles = [];

    protected $aliases = [];

    protected $extensions = [];

    /**
     * @var array array of not yet merged params
     */
    protected $rawParams = [];

    /**
     * @var Composer instance
     */
    protected $composer;

    /**
     * @var IOInterface
     */
    public $io;

    /**
     * Initializes the plugin object with the passed $composer and $io.
     * @param Composer $composer
     * @param IOInterface $io
     */
    public function activate(Composer $composer, IOInterface $io)
    {
        $this->composer = $composer;
        $this->io = $io;
    }

    /**
     * Returns list of events the plugin is subscribed to.
     * @return array list of events
     */
    public static function getSubscribedEvents()
    {
        return [
            ScriptEvents::POST_AUTOLOAD_DUMP => [
                ['onPostAutoloadDump', 0],
            ],
        ];
    }

    /**
     * This is the main function.
     * @param Event $event
     */
    public function onPostAutoloadDump(Event $event)

The parameter $event is not used and could be removed.

    {
        $this->io->writeError('<info>Assembling config files</info>');
        $this->initAutoload();
        $this->scanPackages();
        $this->showDepsTree();

        $builder = new Builder($this->files);
        $builder->setAddition(['aliases' => $this->aliases]);
        $builder->setIo($this->io);
        $builder->saveFiles();
        $builder->writeConfig('aliases', $this->aliases);
        $builder->writeConfig('extensions', $this->extensions);
        $builder->buildConfigs();
    }

    protected function initAutoload()
    {
        require_once dirname(dirname(dirname(__DIR__))) . '/autoload.php';
    }

    protected function scanPackages()
    {
        foreach ($this->getPackages() as $package) {
            if ($package instanceof CompletePackageInterface) {
                $this->processPackage($package);
            }
        }
    }

    /**
     * Scans the given package and collects extensions data.
     * @param PackageInterface $package
     */
    protected function processPackage(CompletePackageInterface $package)
    {
        $extra = $package->getExtra();
        $files = isset($extra[self::EXTRA_OPTION_NAME]) ? $extra[self::EXTRA_OPTION_NAME] : null;
        $this->originalFiles[$package->getPrettyName()] = $files;

        if ($package->getType() !== self::YII2_PACKAGE_TYPE && is_null($files)) {
            return;
        }

        if (is_array($files)) {
            $this->addFiles($package, $files);
        }
        if ($package instanceof RootPackageInterface) {
            $this->loadDotEnv($package);
        }

        $aliases = $this->collectAliases($package);
        $this->aliases = array_merge($this->aliases, $aliases);

        $this->extensions[$package->getPrettyName()] = array_filter([
            'name' => $package->getPrettyName(),
            'version' => $package->getVersion(),
            'reference' => $package->getSourceReference() ?: $package->getDistReference(),
            'aliases' => $aliases,
        ]);
    }

    protected function loadDotEnv(RootPackageInterface $package)
    {
        $path = $this->preparePath($package, '.env');
        if (file_exists($path) && class_exists('Dotenv\Dotenv')) {
            array_push($this->files['dotenv'], $path);
        }
    }

    /**
     * Adds given files to the list of files to be processed.
     * Prepares `defines` in reversed order (outer package first) because
     * constants cannot be redefined.
     * @param CompletePackageInterface $package
     * @param array $files
     */
    protected function addFiles(CompletePackageInterface $package, array $files)
    {
        foreach ($files as $name => $paths) {
            $paths = (array) $paths;
            if ($name === 'defines') {
                $paths = array_reverse($paths);
            }
            foreach ($paths as $path) {
                if (!isset($this->files[$name])) {
                    $this->files[$name] = [];
                }
                $path = $this->preparePath($package, $path);
                if ($name === 'defines') {
                    array_unshift($this->files[$name], $path);
                } else {
                    array_push($this->files[$name], $path);
                }
            }
        }
    }

    /**
     * Collects package aliases.
     * @param CompletePackageInterface $package
     * @return array collected aliases
     */
    protected function collectAliases(CompletePackageInterface $package)
    {
        $aliases = array_merge(
            $this->prepareAliases($package, 'psr-0'),
            $this->prepareAliases($package, 'psr-4')
        );
        if ($package instanceof RootPackageInterface) {
            $aliases = array_merge($aliases,
                $this->prepareAliases($package, 'psr-0', true),
                $this->prepareAliases($package, 'psr-4', true)
            );
        }

        return $aliases;
    }

    /**
     * Prepare aliases.
     * @param PackageInterface $package
     * @param string 'psr-0' or 'psr-4'
     * @return array
     */
    protected function prepareAliases(PackageInterface $package, $psr, $dev = false)
    {
        $autoload = $dev ? $package->getDevAutoload() : $package->getAutoload();
        if (empty($autoload[$psr])) {
            return [];
        }

        $aliases = [];
        foreach ($autoload[$psr] as $name => $path) {
            if (is_array($path)) {
                // ignore psr-4 autoload specifications with multiple search paths
                // we can not convert them into aliases as they are ambiguous
                continue;
            }
            $name = str_replace('\\', '/', trim($name, '\\'));
            $path = $this->preparePath($package, $path);
            if ('psr-0' === $psr) {
                $path .= '/' . $name;
            }
            $aliases["@$name"] = $path;
        }

        return $aliases;
    }

    /**
     * Builds path inside of a package.
     * @param PackageInterface $package
     * @param mixed $path can be absolute or relative
     * @return string absolute paths will stay untouched
     */
    public function preparePath(PackageInterface $package, $path)
    {
        if (strncmp($path, '$', 1) === 0) {
            return $path;
        }

        $skippable = strncmp($path, '?', 1) === 0 ? '?' : '';
        if ($skippable) {
            $path = substr($path, 1);
        }

        if (!$this->getFilesystem()->isAbsolutePath($path)) {
            $prefix = $package instanceof RootPackageInterface
                ? $this->getBaseDir()
                : $this->getVendorDir() . '/' . $package->getPrettyName();
            $path = $prefix . '/' . $path;
        }

        return $skippable . $this->getFilesystem()->normalizePath($path);
    }

    /**
     * Sets [[packages]].
     * @param PackageInterface[] $packages
     */
    public function setPackages(array $packages)
    {
        $this->packages = $packages;
    }

    /**
     * Gets [[packages]].
     * @return \Composer\Package\PackageInterface[]
     */
    public function getPackages()
    {
        if ($this->packages === null) {
            $this->packages = $this->findPackages();
        }

        return $this->packages;
    }

    /**
     * Plain list of all project dependencies (including nested) as provided by composer.
     * The list is unordered (chaotic, can be different after every update).
     */
    protected $plainList = [];

    /**
     * Ordered list of package in form: package => depth
     * For order description @see findPackages.
     */
    protected $orderedList = [];

    /**
     * Returns ordered list of packages:
     * - listed earlier in the composer.json will get earlier in the list
     * - childs before parents.
     * @return \Composer\Package\PackageInterface[]
     */
    public function findPackages()
    {
        $root = $this->composer->getPackage();
        $this->plainList[$root->getPrettyName()] = $root;
        foreach ($this->composer->getRepositoryManager()->getLocalRepository()->getCanonicalPackages() as $package) {
            $this->plainList[$package->getPrettyName()] = $package;
        }
        $this->orderedList = [];
        $this->iteratePackage($root, true);

        $res = [];
        foreach (array_keys($this->orderedList) as $name) {
            $res[] = $this->plainList[$name];
        }

        return $res;
    }

    /**
     * Iterates through package dependencies.
     * @param PackageInterface $package to iterate
     * @param bool $includingDev process development dependencies, defaults to not process
     */
    protected function iteratePackage(PackageInterface $package, $includingDev = false)
    {
        $name = $package->getPrettyName();

        /// prevent infinite loop in case of circular dependencies
        static $processed = [];
        if (isset($processed[$name])) {
            return;
        } else {
            $processed[$name] = 1;
        }

        /// package depth in dependency hierarchy
        static $depth = 0;
        $depth++;

        $this->iterateDependencies($package);
        if ($includingDev) {
            $this->iterateDependencies($package, true);
        }
        if (!isset($this->orderedList[$name])) {
            $this->orderedList[$name] = $depth;
        }

        $depth--;
    }

    /**
     * Iterates dependencies of the given package.
     * @param PackageInterface $package
     * @param bool $dev which dependencies to iterate: true - dev, default - general
     */
    protected function iterateDependencies(PackageInterface $package, $dev = false)
    {
        $path = $this->preparePath($package, 'composer.json');
        if (file_exists($path)) {
            $conf = json_decode(file_get_contents($path), true);
            $what = $dev ? 'require-dev' : 'require';
            $deps = isset($conf[$what]) ? $conf[$what] : [];
        } else {
            $deps = $dev ? $package->getDevRequires() : $package->getRequires();
        }
        foreach (array_keys($deps) as $target) {
            if (isset($this->plainList[$target]) && empty($this->orderedList[$target])) {
                $this->iteratePackage($this->plainList[$target]);
            }
        }
    }

    protected function showDepsTree()
    {
        if (!$this->io->isVerbose()) {
            return;
        }

        foreach (array_reverse($this->orderedList) as $name => $depth) {
            $deps = $this->originalFiles[$name];
            $color = $this->colors[$depth % count($this->colors)];
            $indent = str_repeat('   ', $depth - 1);
            $package = $this->plainList[$name];
            $showdeps = $deps ? '<comment>[' . implode(',', array_keys($deps)) . ']</>' : '';
            $this->io->write(sprintf('%s - <fg=%s;options=bold>%s</> %s %s', $indent, $color, $name, $package->getFullPrettyVersion(), $showdeps));
        }
    }

    protected $colors = ['red', 'green', 'yellow', 'cyan', 'magenta', 'blue'];

    /**
     * Get absolute path to package base dir.
     * @return string
     */
    public function getBaseDir()
    {
        if ($this->baseDir === null) {
            $this->baseDir = dirname($this->getVendorDir());
        }

        return $this->baseDir;
    }

    /**
     * Get absolute path to composer vendor dir.
     * @return string
     */
    public function getVendorDir()
    {
        if ($this->vendorDir === null) {
            $dir = $this->composer->getConfig()->get('vendor-dir');
            $this->vendorDir = $this->getFilesystem()->normalizePath($dir);
        }

        return $this->vendorDir;
    }

    /**
     * Getter for filesystem utility.
     * @return Filesystem
     */
    public function getFilesystem()
    {
        if ($this->filesystem === null) {
            $this->filesystem = new Filesystem();
        }

        return $this->filesystem;
    }
}