<?php

declare(strict_types=1);

namespace League\Flysystem;

use DateTimeInterface;
use Generator;
use League\Flysystem\UrlGeneration\PrefixPublicUrlGenerator;
use League\Flysystem\UrlGeneration\PublicUrlGenerator;
use League\Flysystem\UrlGeneration\ShardedPrefixPublicUrlGenerator;
use League\Flysystem\UrlGeneration\TemporaryUrlGenerator;
use Throwable;

use function array_key_exists;
use function is_array;

class Filesystem implements FilesystemOperator
{
    use CalculateChecksumFromStream;

    private Config $config;
    private PathNormalizer $pathNormalizer;

    public function __construct(
        private FilesystemAdapter $adapter,
        array $config = [],
        ?PathNormalizer $pathNormalizer = null,
        private ?PublicUrlGenerator $publicUrlGenerator = null,
        private ?TemporaryUrlGenerator $temporaryUrlGenerator = null,
    ) {
        $this->config = new Config($config);
        $this->pathNormalizer = $pathNormalizer ?? new WhitespacePathNormalizer();
    }

    public function fileExists(string $location): bool
    {
        return $this->adapter->fileExists($this->pathNormalizer->normalizePath($location));
    }

    public function directoryExists(string $location): bool
    {
        return $this->adapter->directoryExists($this->pathNormalizer->normalizePath($location));
    }

    public function has(string $location): bool
    {
        $path = $this->pathNormalizer->normalizePath($location);

        return $this->adapter->fileExists($path) || $this->adapter->directoryExists($path);
    }

    public function write(string $location, string $contents, array $config = []): void
    {
        $this->adapter->write(
            $this->pathNormalizer->normalizePath($location),
            $contents,
            $this->config->extend($config)
        );
    }

    public function writeStream(string $location, $contents, array $config = []): void
    {
        /* @var resource $contents */
        $this->assertIsResource($contents);
        $this->rewindStream($contents);
        $this->adapter->writeStream(
            $this->pathNormalizer->normalizePath($location),
            $contents,
            $this->config->extend($config)
        );
    }

    public function read(string $location): string
    {
        return $this->adapter->read($this->pathNormalizer->normalizePath($location));
    }

    public function readStream(string $location)
    {
        return $this->adapter->readStream($this->pathNormalizer->normalizePath($location));
    }

    public function delete(string $location): void
    {
        $this->adapter->delete($this->pathNormalizer->normalizePath($location));
    }

    public function deleteDirectory(string $location): void
    {
        $this->adapter->deleteDirectory($this->pathNormalizer->normalizePath($location));
    }

    public function createDirectory(string $location, array $config = []): void
    {
        $this->adapter->createDirectory(
            $this->pathNormalizer->normalizePath($location),
            $this->config->extend($config)
        );
    }

    public function listContents(string $location, bool $deep = self::LIST_SHALLOW): DirectoryListing
    {
        $path = $this->pathNormalizer->normalizePath($location);
        $listing = $this->adapter->listContents($path, $deep);

        return new DirectoryListing($this->pipeListing($location, $deep, $listing));
    }

    private function pipeListing(string $location, bool $deep, iterable $listing): Generator
    {
        try {
            foreach ($listing as $item) {
                yield $item;
            }
        } catch (Throwable $exception) {
            throw UnableToListContents::atLocation($location, $deep, $exception);
        }
    }

    public function move(string $source, string $destination, array $config = []): void
    {
        $config = $this->resolveConfigForMoveAndCopy($config);
        $from = $this->pathNormalizer->normalizePath($source);
        $to = $this->pathNormalizer->normalizePath($destination);

        if ($from === $to) {
            $resolutionStrategy = $config->get(Config::OPTION_MOVE_IDENTICAL_PATH, ResolveIdenticalPathConflict::TRY);

            if ($resolutionStrategy === ResolveIdenticalPathConflict::FAIL) {
                throw UnableToMoveFile::sourceAndDestinationAreTheSame($source, $destination);
            } elseif ($resolutionStrategy === ResolveIdenticalPathConflict::IGNORE) {
                return;
            }
        }

        $this->adapter->move($from, $to, $config);
    }

    public function copy(string $source, string $destination, array $config = []): void
    {
        $config = $this->resolveConfigForMoveAndCopy($config);
        $from = $this->pathNormalizer->normalizePath($source);
        $to = $this->pathNormalizer->normalizePath($destination);

        if ($from === $to) {
            $resolutionStrategy = $config->get(Config::OPTION_COPY_IDENTICAL_PATH, ResolveIdenticalPathConflict::TRY);

            if ($resolutionStrategy === ResolveIdenticalPathConflict::FAIL) {
                throw UnableToCopyFile::sourceAndDestinationAreTheSame($source, $destination);
            } elseif ($resolutionStrategy === ResolveIdenticalPathConflict::IGNORE) {
                return;
            }
        }

        $this->adapter->copy($from, $to, $config);
    }

    public function lastModified(string $path): int
    {
        return $this->adapter->lastModified($this->pathNormalizer->normalizePath($path))->lastModified();
    }

    public function fileSize(string $path): int
    {
        return $this->adapter->fileSize($this->pathNormalizer->normalizePath($path))->fileSize();
    }

    public function mimeType(string $path): string
    {
        return $this->adapter->mimeType($this->pathNormalizer->normalizePath($path))->mimeType();
    }

    public function setVisibility(string $path, string $visibility): void
    {
        $this->adapter->setVisibility($this->pathNormalizer->normalizePath($path), $visibility);
    }

    public function visibility(string $path): string
    {
        return $this->adapter->visibility($this->pathNormalizer->normalizePath($path))->visibility();
    }

    public function publicUrl(string $path, array $config = []): string
    {
        $this->publicUrlGenerator ??= $this->resolvePublicUrlGenerator()
            ?? throw UnableToGeneratePublicUrl::noGeneratorConfigured($path);
        $config = $this->config->extend($config);

        return $this->publicUrlGenerator->publicUrl($this->pathNormalizer->normalizePath($path), $config);
    }

    public function temporaryUrl(string $path, DateTimeInterface $expiresAt, array $config = []): string
    {
        $generator = $this->temporaryUrlGenerator ?? $this->adapter;

        if ($generator instanceof TemporaryUrlGenerator) {
            return $generator->temporaryUrl(
                $this->pathNormalizer->normalizePath($path),
                $expiresAt,
                $this->config->extend($config)
            );
        }

        throw UnableToGenerateTemporaryUrl::noGeneratorConfigured($path);
    }

    public function checksum(string $path, array $config = []): string
    {
        $config = $this->config->extend($config);

        if ( ! $this->adapter instanceof ChecksumProvider) {
            return $this->calculateChecksumFromStream($path, $config);
        }

        try {
            return $this->adapter->checksum($path, $config);
        } catch (ChecksumAlgoIsNotSupported) {
            return $this->calculateChecksumFromStream($path, $config);
        }
    }

    private function resolvePublicUrlGenerator(): ?PublicUrlGenerator
    {
        if ($publicUrl = $this->config->get('public_url')) {
            return match (true) {
                is_array($publicUrl) => new ShardedPrefixPublicUrlGenerator($publicUrl),
                default => new PrefixPublicUrlGenerator($publicUrl),
            };
        }

        if ($this->adapter instanceof PublicUrlGenerator) {
            return $this->adapter;
        }

        return null;
    }

    /**
     * @param mixed $contents
     */
    private function assertIsResource($contents): void
    {
        if (is_resource($contents) === false) {
            throw new InvalidStreamProvided(
                "Invalid stream provided, expected stream resource, received " . gettype($contents)
            );
        } elseif ($type = get_resource_type($contents) !== 'stream') {
            throw new InvalidStreamProvided(
                "Invalid stream provided, expected stream resource, received resource of type " . $type
            );
        }
    }

    /**
     * @param resource $resource
     */
    private function rewindStream($resource): void
    {
        if (ftell($resource) !== 0 && stream_get_meta_data($resource)['seekable']) {
            rewind($resource);
        }
    }

    private function resolveConfigForMoveAndCopy(array $config): Config
    {
        $retainVisibility = $this->config->get(Config::OPTION_RETAIN_VISIBILITY, $config[Config::OPTION_RETAIN_VISIBILITY] ?? true);
        $fullConfig = $this->config->extend($config);

        /*
         * By default, we retain visibility. When we do not retain visibility, the visibility setting
         * from the default configuration is ignored. Only when it is set explicitly, we propagate the
         * setting.
         */
        if ($retainVisibility && ! array_key_exists(Config::OPTION_VISIBILITY, $config)) {
            $fullConfig = $fullConfig->withoutSettings(Config::OPTION_VISIBILITY)->extend($config);
        }

        return $fullConfig;
    }
}

.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