class PerforceDriver

class PerforceDriver extends VcsDriver {
    
    /** @var string */
    protected $depot;
    
    /** @var string */
    protected $branch;
    
    /** @var ?Perforce */
    protected $perforce = null;
    
    /**
     * @inheritDoc
     */
    public function initialize() : void {
        $this->depot = $this->repoConfig['depot'];
        $this->branch = '';
        if (!empty($this->repoConfig['branch'])) {
            $this->branch = $this->repoConfig['branch'];
        }
        $this->initPerforce($this->repoConfig);
        $this->perforce
            ->p4Login();
        $this->perforce
            ->checkStream();
        $this->perforce
            ->writeP4ClientSpec();
        $this->perforce
            ->connectClient();
    }
    
    /**
     * @param array<string, mixed> $repoConfig
     */
    private function initPerforce(array $repoConfig) : void {
        if (!empty($this->perforce)) {
            return;
        }
        if (!Cache::isUsable($this->config
            ->get('cache-vcs-dir'))) {
            throw new \RuntimeException('PerforceDriver requires a usable cache directory, and it looks like you set it to be disabled');
        }
        $repoDir = $this->config
            ->get('cache-vcs-dir') . '/' . $this->depot;
        $this->perforce = Perforce::create($repoConfig, $this->getUrl(), $repoDir, $this->process, $this->io);
    }
    
    /**
     * @inheritDoc
     */
    public function getFileContent(string $file, string $identifier) : ?string {
        return $this->perforce
            ->getFileContent($file, $identifier);
    }
    
    /**
     * @inheritDoc
     */
    public function getChangeDate(string $identifier) : ?\DateTimeImmutable {
        return null;
    }
    
    /**
     * @inheritDoc
     */
    public function getRootIdentifier() : string {
        return $this->branch;
    }
    
    /**
     * @inheritDoc
     */
    public function getBranches() : array {
        return $this->perforce
            ->getBranches();
    }
    
    /**
     * @inheritDoc
     */
    public function getTags() : array {
        return $this->perforce
            ->getTags();
    }
    
    /**
     * @inheritDoc
     */
    public function getDist(string $identifier) : ?array {
        return null;
    }
    
    /**
     * @inheritDoc
     */
    public function getSource(string $identifier) : array {
        return [
            'type' => 'perforce',
            'url' => $this->repoConfig['url'],
            'reference' => $identifier,
            'p4user' => $this->perforce
                ->getUser(),
        ];
    }
    
    /**
     * @inheritDoc
     */
    public function getUrl() : string {
        return $this->url;
    }
    
    /**
     * @inheritDoc
     */
    public function hasComposerFile(string $identifier) : bool {
        $composerInfo = $this->perforce
            ->getComposerInformation('//' . $this->depot . '/' . $identifier);
        return !empty($composerInfo);
    }
    
    /**
     * @inheritDoc
     */
    public function getContents(string $url) : Response {
        throw new \BadMethodCallException('Not implemented/used in PerforceDriver');
    }
    
    /**
     * @inheritDoc
     */
    public static function supports(IOInterface $io, Config $config, string $url, bool $deep = false) : bool {
        if ($deep || Preg::isMatch('#\\b(perforce|p4)\\b#i', $url)) {
            return Perforce::checkServerExists($url, new ProcessExecutor($io));
        }
        return false;
    }
    
    /**
     * @inheritDoc
     */
    public function cleanup() : void {
        $this->perforce
            ->cleanupClientSpec();
        $this->perforce = null;
    }
    public function getDepot() : string {
        return $this->depot;
    }
    public function getBranch() : string {
        return $this->branch;
    }

}