KevinGH\Box\RequirementChecker\AppRequirementsFactory

Complexity

Total Complexity

40

Size/Duplication

Total Lines	251
Duplicated Lines	0 %

Importance

Changes

0

9 Methods

Rating	Name	Duplication	Size	Complexity
A	retrievePhpVersionRequirements()	0	13	4
A	create()	0	7	1
D	collectComposerLockExtensionRequirements()	0	37	9
C	collectComposerJsonExtensionRequirements()	0	33	8
B	collectExtensionRequirements()	0	32	6
A	retrievePackagesPhpRequirement()	0	15	3
B	configureExtensionRequirements()	0	42	4
A	retrievePlatformPhpRequirement()	0	12	2
B	generatePhpCheckRequirement()	0	24	3

<?php

declare(strict_types=1);

/*
 * This file is part of the box project.
 *
 * (c) Kevin Herrera <kevin@herrera.io>
 *     Théo Fidry <theo.fidry@gmail.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */

namespace KevinGH\Box\RequirementChecker;

use Phar;
use function array_diff_key;
use function array_key_exists;
use function sprintf;
use function substr;

/**
 * Collect the list of requirements for running the application.
 *
 * @private
 */
final class AppRequirementsFactory
{
    private const SELF_PACKAGE = '__APPLICATION__';

    /**
     * @param array $composerJsonDecodedContents Decoded JSON contents of the `composer.json` file
     * @param array $composerLockDecodedContents Decoded JSON contents of the `composer.lock` file
     *
     * @return array Serialized configured requirements
     */
    public static function create(array $composerJsonDecodedContents, array $composerLockDecodedContents, ?int $compressionAlgorithm): array
    {
        return self::configureExtensionRequirements(
            self::retrievePhpVersionRequirements([], $composerJsonDecodedContents, $composerLockDecodedContents),
            $composerJsonDecodedContents,
            $composerLockDecodedContents,
            $compressionAlgorithm
        );
    }

    private static function retrievePhpVersionRequirements(
        array $requirements,
        array $composerJsonContents,
        array $composerLockContents
    ): array {
        if (([] === $composerLockContents && isset($composerJsonContents['require']['php']))
            || isset($composerLockContents['platform']['php'])
        ) {
            // No need to check the packages requirements: the application platform config is the authority here
            return self::retrievePlatformPhpRequirement($requirements, $composerJsonContents, $composerLockContents);
        }

        return self::retrievePackagesPhpRequirement($requirements, $composerLockContents);
    }

    private static function retrievePlatformPhpRequirement(
        array $requirements,
        array $composerJsonContents,
        array $composerLockContents
    ): array {
        $requiredPhpVersion = [] === $composerLockContents
            ? $composerJsonContents['require']['php']
            : $composerLockContents['platform']['php'];

        $requirements[] = self::generatePhpCheckRequirement((string) $requiredPhpVersion, null);

        return $requirements;
    }

    private static function retrievePackagesPhpRequirement(array $requirements, array $composerLockContents): array
    {
        $packages = $composerLockContents['packages'] ?? [];

        foreach ($packages as $packageInfo) {
            $requiredPhpVersion = $packageInfo['require']['php'] ?? null;

            if (null === $requiredPhpVersion) {
                continue;
            }

            $requirements[] = self::generatePhpCheckRequirement((string) $requiredPhpVersion, $packageInfo['name']);
        }

        return $requirements;
    }

    private static function configureExtensionRequirements(
        array $requirements,
        array $composerJsonContents,
        array $composerLockContents,
        ?int $compressionAlgorithm
    ): array {
        $extensionRequirements = self::collectExtensionRequirements($composerJsonContents, $composerLockContents, $compressionAlgorithm);

        foreach ($extensionRequirements as $extension => $packages) {
            foreach ($packages as $package) {
                if (self::SELF_PACKAGE === $package) {
                    $message = sprintf(
                        'The application requires the extension "%s". Enable it or install a polyfill.',
                        $extension
                    );
                    $helpMessage = sprintf(
                        'The application requires the extension "%s".',
                        $extension
                    );
                } else {
                    $message = sprintf(
                        'The package "%s" requires the extension "%s". Enable it or install a polyfill.',
                        $package,
                        $extension
                    );
                    $helpMessage = sprintf(
                        'The package "%s" requires the extension "%s".',
                        $package,
                        $extension
                    );
                }

                $requirements[] = [
                    'type' => 'extension',
                    'condition' => $extension,
                    'message' => $message,
                    'helpMessage' => $helpMessage,
                ];
            }
        }

        return $requirements;
    }

    /**
     * Collects the extension required. It also accounts for the polyfills, i.e. if the polyfill `symfony/polyfill-mbstring` is provided
     * then the extension `ext-mbstring` will not be required.
     *
     * @return array Associative array containing the list of extensions required
     */
    private static function collectExtensionRequirements(
        array $composerJsonContents,
        array $composerLockContents,
        ?int $compressionAlgorithm
    ): array {
        $requirements = [];
        $polyfills = [];

        if (Phar::BZ2 === $compressionAlgorithm) {
            $requirements['bz2'] = [self::SELF_PACKAGE];
        }

        if (Phar::GZ === $compressionAlgorithm) {
            $requirements['zlib'] = [self::SELF_PACKAGE];
        }

        $platform = $composerLockContents['platform'] ?? [];

        foreach ($platform as $package => $constraint) {
            if (preg_match('/^ext-(?<extension>.+)$/', $package, $matches)) {
                $extension = $matches['extension'];

                $requirements[$extension] = [self::SELF_PACKAGE];
            }
        }

        [$polyfills, $requirements] = [] === $composerLockContents
            ? self::collectComposerJsonExtensionRequirements($composerJsonContents, $polyfills, $requirements)
            : self::collectComposerLockExtensionRequirements($composerLockContents, $polyfills, $requirements)
        ;

        return array_diff_key($requirements, $polyfills);
    }

    private static function collectComposerJsonExtensionRequirements(array $composerJsonContents, $polyfills, $requirements): array
    {
        $packages = $composerJsonContents['require'] ?? [];

        foreach ($packages as $packageName => $constraint) {
            if (1 === preg_match('/symfony\/polyfill-(?<extension>.+)/', $packageName, $matches)) {
                $extension = $matches['extension'];

                if ('php' !== substr($extension, 0, 3)) {
                    $polyfills[$extension] = true;

                    continue;
                }
            }

            if ('paragonie/sodium_compat' === $packageName) {
                $polyfills['libsodium'] = true;

                continue;
            }

            if ('phpseclib/mcrypt_compat' === $packageName) {
                $polyfills['mcrypt'] = true;

                continue;
            }

            if ('php' !== $packageName && preg_match('/^ext-(?<extension>.+)$/', $packageName, $matches)) {
                $requirements[$matches['extension']] = [self::SELF_PACKAGE];
            }
        }

        return [$polyfills, $requirements];
    }

    private static function collectComposerLockExtensionRequirements(array $composerLockContents, $polyfills, $requirements): array
    {
        $packages = $composerLockContents['packages'] ?? [];

        foreach ($packages as $packageInfo) {
            $packageRequire = $packageInfo['require'] ?? [];

            if (1 === preg_match('/symfony\/polyfill-(?<extension>.+)/', $packageInfo['name'], $matches)) {
                $extension = $matches['extension'];

                if ('php' !== substr($extension, 0, 3)) {
                    $polyfills[$extension] = true;
                }
            }

            if ('paragonie/sodium_compat' === $packageInfo['name']) {
                $polyfills['libsodium'] = true;
            }

            if ('phpseclib/mcrypt_compat' === $packageInfo['name']) {
                $polyfills['mcrypt'] = true;
            }

            foreach ($packageRequire as $package => $constraint) {
                if (1 === preg_match('/^ext-(?<extension>.+)$/', $package, $matches)) {
                    $extension = $matches['extension'];

                    if (false === array_key_exists($extension, $requirements)) {
                        $requirements[$extension] = [];
                    }

                    $requirements[$extension][] = $packageInfo['name'];
                }
            }
        }

        return [$polyfills, $requirements];
    }

    /**
     * @return string[]
     */
    private static function generatePhpCheckRequirement(string $requiredPhpVersion, ?string $packageName): array
    {
        return [
            'type' => 'php',
            'condition' => $requiredPhpVersion,
            'message' => null === $packageName
                ? sprintf(
                    'The application requires the version "%s" or greater.',
                    $requiredPhpVersion
                )
                : sprintf(
                    'The package "%s" requires the version "%s" or greater.',
                    $packageName,
                    $requiredPhpVersion
                ),
            'helpMessage' => null === $packageName
                ? sprintf(
                'The application requires the version "%s" or greater.',
                $requiredPhpVersion
            )
                : sprintf(
                'The package "%s" requires the version "%s" or greater.',
                $packageName,
                $requiredPhpVersion
            ),
        ];
    }
}