<?php declare(strict_types = 1);
/*
 * This file is part of PharIo\Version.
 *
 * (c) Arne Blankerts <arne@blankerts.de>, Sebastian Heuer <sebastian@phpeople.de>, Sebastian Bergmann <sebastian@phpunit.de>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace PharIo\Version;

class VersionConstraintParser {
    /**
     * @throws UnsupportedVersionConstraintException
     */
    public function parse(string $value): VersionConstraint {
        if (\strpos($value, '|') !== false) {
            return $this->handleOrGroup($value);
        }

        if (!\preg_match('/^[\^~*]?v?[\d.*]+(?:-.*)?$/i', $value)) {
            throw new UnsupportedVersionConstraintException(
                \sprintf('Version constraint %s is not supported.', $value)
            );
        }

        switch ($value[0]) {
            case '~':
                return $this->handleTildeOperator($value);
            case '^':
                return $this->handleCaretOperator($value);
        }

        $constraint = new VersionConstraintValue($value);

        if ($constraint->getMajor()->isAny()) {
            return new AnyVersionConstraint();
        }

        if ($constraint->getMinor()->isAny()) {
            return new SpecificMajorVersionConstraint(
                $constraint->getVersionString(),
                $constraint->getMajor()->getValue() ?? 0
            );
        }

        if ($constraint->getPatch()->isAny()) {
            return new SpecificMajorAndMinorVersionConstraint(
                $constraint->getVersionString(),
                $constraint->getMajor()->getValue() ?? 0,
                $constraint->getMinor()->getValue() ?? 0
            );
        }

        return new ExactVersionConstraint($constraint->getVersionString());
    }

    private function handleOrGroup(string $value): OrVersionConstraintGroup {
        $constraints = [];

        foreach (\preg_split('{\s*\|\|?\s*}', \trim($value)) as $groupSegment) {
            $constraints[] = $this->parse(\trim($groupSegment));
        }

        return new OrVersionConstraintGroup($value, $constraints);
    }

    private function handleTildeOperator(string $value): AndVersionConstraintGroup {
        $constraintValue = new VersionConstraintValue(\substr($value, 1));

        if ($constraintValue->getPatch()->isAny()) {
            return $this->handleCaretOperator($value);
        }

        $constraints = [
            new GreaterThanOrEqualToVersionConstraint(
                $value,
                new Version(\substr($value, 1))
            ),
            new SpecificMajorAndMinorVersionConstraint(
                $value,
                $constraintValue->getMajor()->getValue() ?? 0,
                $constraintValue->getMinor()->getValue() ?? 0
            )
        ];

        return new AndVersionConstraintGroup($value, $constraints);
    }

    private function handleCaretOperator(string $value): AndVersionConstraintGroup {
        $constraintValue = new VersionConstraintValue(\substr($value, 1));

        $constraints = [
            new GreaterThanOrEqualToVersionConstraint($value, new Version(\substr($value, 1)))
        ];

        if ($constraintValue->getMajor()->getValue() === 0) {
            $constraints[] = new SpecificMajorAndMinorVersionConstraint(
                $value,
                $constraintValue->getMajor()->getValue() ?? 0,
                $constraintValue->getMinor()->getValue() ?? 0
            );
        } else {
            $constraints[] = new SpecificMajorVersionConstraint(
                $value,
                $constraintValue->getMajor()->getValue() ?? 0
            );
        }

        return new AndVersionConstraintGroup(
            $value,
            $constraints
        );
    }
}

.NET Framework

Project Request

ProjectC

Vehicle Maintenance

Movie Navigator

Customers Exchange

ATM

.NET Core

Mail Daemon

Custom

Buns of code

PHP

Mediabox

Loan Castle

Content Management

Laravel

Phone Check

Frontend

Forex Wall

Business projects

Certification Center

Amerikas Auto

Pet projects

Geolocation Assistant

Web Dynamics

Blackball

Good old times

DOS Clock

BrainOut

Airport Administrator

Atomizer

Mediabox