<?php

namespace Composer\Package;

use Composer\Package\Version\VersionParser;
use Composer\Semver\Constraint\Constraint;

/**
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class AliasPackage extends BasePackage
{
	/** @var string */
	protected $version;

	/** @var string */
	protected $prettyVersion;

	/** @var bool */
	protected $dev;

	/** @var bool */
	protected $rootPackageAlias = false;

	/**
	 * @var string
	 * @phpstan-var 'stable'|'RC'|'beta'|'alpha'|'dev'
	 */
	protected $stability;

	/** @var bool */
	protected $hasSelfVersionRequires = false;

	/** @var BasePackage */
	protected $aliasOf;

	/** @var Link[] */
	protected $requires;

	/** @var Link[] */
	protected $devRequires;

	/** @var Link[] */
	protected $conflicts;

	/** @var Link[] */
	protected $provides;

	/** @var Link[] */
	protected $replaces;


	/**
	 * All descendants' constructors should call this parent constructor
	 *
	 * @param BasePackage $aliasOf       The package this package is an alias of
	 * @param string      $version       The version the alias must report
	 * @param string      $prettyVersion The alias's non-normalized version
	 */
	public function __construct(BasePackage $aliasOf, string $version, string $prettyVersion)
	{
		parent::__construct($aliasOf->getName());

		$this->version = $version;
		$this->prettyVersion = $prettyVersion;
		$this->aliasOf = $aliasOf;
		$this->stability = VersionParser::parseStability($version);
		$this->dev = $this->stability === 'dev';

		foreach (Link::$TYPES as $type) {
		    $links = $aliasOf->{'get' . ucfirst($type)}();
		    $this->{$type} = $this->replaceSelfVersionDependencies($links, $type);
		}
	}


	/**
	 * @return BasePackage
	 */
	public function getAliasOf()
	{
		return $this->aliasOf;
	}


	/**
	 * @inheritDoc
	 */
	public function getVersion(): string
	{
		return $this->version;
	}


	/**
	 * @inheritDoc
	 */
	public function getStability(): string
	{
		return $this->stability;
	}


	/**
	 * @inheritDoc
	 */
	public function getPrettyVersion(): string
	{
		return $this->prettyVersion;
	}


	/**
	 * @inheritDoc
	 */
	public function isDev(): bool
	{
		return $this->dev;
	}


	/**
	 * @inheritDoc
	 */
	public function getRequires(): array
	{
		return $this->requires;
	}


	/**
	 * @inheritDoc
	 * @return array<string|int, Link>
	 */
	public function getConflicts(): array
	{
		return $this->conflicts;
	}


	/**
	 * @inheritDoc
	 * @return array<string|int, Link>
	 */
	public function getProvides(): array
	{
		return $this->provides;
	}


	/**
	 * @inheritDoc
	 * @return array<string|int, Link>
	 */
	public function getReplaces(): array
	{
		return $this->replaces;
	}


	/**
	 * @inheritDoc
	 */
	public function getDevRequires(): array
	{
		return $this->devRequires;
	}


	/**
	 * Stores whether this is an alias created by an aliasing in the requirements of the root package or not
	 *
	 * Use by the policy for sorting manually aliased packages first, see #576
	 */
	public function setRootPackageAlias(bool $value): void
	{
		$this->rootPackageAlias = $value;
	}


	/**
	 * @see setRootPackageAlias
	 */
	public function isRootPackageAlias(): bool
	{
		return $this->rootPackageAlias;
	}


	/**
	 * @param Link[]       $links
	 * @param Link::TYPE_* $linkType
	 *
	 * @return Link[]
	 */
	protected function replaceSelfVersionDependencies(array $links, $linkType): array
	{
		$prettyVersion = $this->prettyVersion;
		if ($prettyVersion === VersionParser::DEFAULT_BRANCH_ALIAS) {
		    $prettyVersion = $this->aliasOf->getPrettyVersion();
		}

		if (\in_array($linkType, [Link::TYPE_CONFLICT, Link::TYPE_PROVIDE, Link::TYPE_REPLACE], true)) {
		    $newLinks = [];
		    foreach ($links as $link) {
		        // link is self.version, but must be replacing also the replaced version
		        if ('self.version' === $link->getPrettyConstraint()) {
		            $newLinks[] = new Link($link->getSource(), $link->getTarget(), $constraint = new Constraint('=', $this->version), $linkType, $prettyVersion);
		            $constraint->setPrettyString($prettyVersion);
		        }
		    }
		    $links = array_merge($links, $newLinks);
		} else {
		    foreach ($links as $index => $link) {
		        if ('self.version' === $link->getPrettyConstraint()) {
		            if ($linkType === Link::TYPE_REQUIRE) {
		                $this->hasSelfVersionRequires = true;
		            }
		            $links[$index] = new Link($link->getSource(), $link->getTarget(), $constraint = new Constraint('=', $this->version), $linkType, $prettyVersion);
		            $constraint->setPrettyString($prettyVersion);
		        }
		    }
		}

		return $links;
	}


	public function hasSelfVersionRequires(): bool
	{
		return $this->hasSelfVersionRequires;
	}


	public function __toString(): string
	{
		return parent::__toString().' ('.($this->rootPackageAlias ? 'root ' : ''). 'alias of '.$this->aliasOf->getVersion().')';
	}


	public function getType(): string
	{
		return $this->aliasOf->getType();
	}


	public function getTargetDir(): ?string
	{
		return $this->aliasOf->getTargetDir();
	}


	public function getExtra(): array
	{
		return $this->aliasOf->getExtra();
	}


	public function setInstallationSource(?string $type): void
	{
		$this->aliasOf->setInstallationSource($type);
	}


	public function getInstallationSource(): ?string
	{
		return $this->aliasOf->getInstallationSource();
	}


	public function getSourceType(): ?string
	{
		return $this->aliasOf->getSourceType();
	}


	public function getSourceUrl(): ?string
	{
		return $this->aliasOf->getSourceUrl();
	}


	public function getSourceUrls(): array
	{
		return $this->aliasOf->getSourceUrls();
	}


	public function getSourceReference(): ?string
	{
		return $this->aliasOf->getSourceReference();
	}


	public function setSourceReference(?string $reference): void
	{
		$this->aliasOf->setSourceReference($reference);
	}


	public function setSourceMirrors(?array $mirrors): void
	{
		$this->aliasOf->setSourceMirrors($mirrors);
	}


	public function getSourceMirrors(): ?array
	{
		return $this->aliasOf->getSourceMirrors();
	}


	public function getDistType(): ?string
	{
		return $this->aliasOf->getDistType();
	}


	public function getDistUrl(): ?string
	{
		return $this->aliasOf->getDistUrl();
	}


	public function getDistUrls(): array
	{
		return $this->aliasOf->getDistUrls();
	}


	public function getDistReference(): ?string
	{
		return $this->aliasOf->getDistReference();
	}


	public function setDistReference(?string $reference): void
	{
		$this->aliasOf->setDistReference($reference);
	}


	public function getDistSha1Checksum(): ?string
	{
		return $this->aliasOf->getDistSha1Checksum();
	}


	public function setTransportOptions(array $options): void
	{
		$this->aliasOf->setTransportOptions($options);
	}


	public function getTransportOptions(): array
	{
		return $this->aliasOf->getTransportOptions();
	}


	public function setDistMirrors(?array $mirrors): void
	{
		$this->aliasOf->setDistMirrors($mirrors);
	}


	public function getDistMirrors(): ?array
	{
		return $this->aliasOf->getDistMirrors();
	}


	public function getAutoload(): array
	{
		return $this->aliasOf->getAutoload();
	}


	public function getDevAutoload(): array
	{
		return $this->aliasOf->getDevAutoload();
	}


	public function getIncludePaths(): array
	{
		return $this->aliasOf->getIncludePaths();
	}


	public function getReleaseDate(): ?\DateTimeInterface
	{
		return $this->aliasOf->getReleaseDate();
	}


	public function getBinaries(): array
	{
		return $this->aliasOf->getBinaries();
	}


	public function getSuggests(): array
	{
		return $this->aliasOf->getSuggests();
	}


	public function getNotificationUrl(): ?string
	{
		return $this->aliasOf->getNotificationUrl();
	}


	public function isDefaultBranch(): bool
	{
		return $this->aliasOf->isDefaultBranch();
	}


	public function setDistUrl(?string $url): void
	{
		$this->aliasOf->setDistUrl($url);
	}


	public function setDistType(?string $type): void
	{
		$this->aliasOf->setDistType($type);
	}


	public function setSourceDistReferences(string $reference): void
	{
		$this->aliasOf->setSourceDistReferences($reference);
	}
}
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