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<?php

namespace Illuminate\Filesystem;

use RuntimeException;
use InvalidArgumentException;
use Illuminate\Support\Collection;
use League\Flysystem\AdapterInterface;
use League\Flysystem\FilesystemInterface;
use League\Flysystem\AwsS3v3\AwsS3Adapter;
use League\Flysystem\FileNotFoundException;
use League\Flysystem\Adapter\Local as LocalAdapter;
use Illuminate\Contracts\Filesystem\Filesystem as FilesystemContract;
use Illuminate\Contracts\Filesystem\Cloud as CloudFilesystemContract;
use Illuminate\Contracts\Filesystem\FileNotFoundException as ContractFileNotFoundException;

class FilesystemAdapter implements FilesystemContract, CloudFilesystemContract
{
    /**
     * The Flysystem filesystem implementation.
     *
     * @var \League\Flysystem\FilesystemInterface
     */
    protected $driver;

/**
     * Create a new filesystem adapter instance.
     *
     * @param  \League\Flysystem\FilesystemInterface  $driver
     * @return void
     */
    public function __construct(FilesystemInterface $driver)
    {
        $this->driver = $driver;
    }

/**
     * Determine if a file exists.
     *
     * @param  string  $path
     * @return bool
     */
    public function exists($path)
    {
        return $this->driver->has($path);
    }

/**
     * Get the contents of a file.
     *
     * @param  string  $path
     * @return string
     *
     * @throws \Illuminate\Contracts\Filesystem\FileNotFoundException
     */
    public function get($path)
    {
        try {
            return $this->driver->read($path);
        } catch (FileNotFoundException $e) {
            throw new ContractFileNotFoundException($path, $e->getCode(), $e);
        }
    }

/**
     * Write the contents of a file.
     *
     * @param  string  $path
     * @param  string|resource  $contents
     * @param  string  $visibility
     * @return bool
     */
    public function put($path, $contents, $visibility = null)
    {
        if ($visibility = $this->parseVisibility($visibility)) {
            $config = ['visibility' => $visibility];
        } else {
            $config = [];
        }

if (is_resource($contents)) {
            return $this->driver->putStream($path, $contents, $config);
        } else {
            return $this->driver->put($path, $contents, $config);
        }
    }

/**
     * Get the visibility for the given path.
     *
     * @param  string  $path
     * @return string
     */
    public function getVisibility($path)
    {
        if ($this->driver->getVisibility($path) == AdapterInterface::VISIBILITY_PUBLIC) {
            return FilesystemContract::VISIBILITY_PUBLIC;
        }

return FilesystemContract::VISIBILITY_PRIVATE;
    }

/**
     * Set the visibility for the given path.
     *
     * @param  string  $path
     * @param  string  $visibility
     * @return void
     */
    public function setVisibility($path, $visibility)
    {
        return $this->driver->setVisibility($path, $this->parseVisibility($visibility));
    }

/**
     * Prepend to a file.
     *
     * @param  string  $path
     * @param  string  $data
     * @return int
     */
    public function prepend($path, $data, $separator = PHP_EOL)
    {
        if ($this->exists($path)) {
            return $this->put($path, $data.$separator.$this->get($path));
        }

return $this->put($path, $data);
    }

/**
     * Append to a file.
     *
     * @param  string  $path
     * @param  string  $data
     * @return int
     */
    public function append($path, $data, $separator = PHP_EOL)
    {
        if ($this->exists($path)) {
            return $this->put($path, $this->get($path).$separator.$data);
        }

return $this->put($path, $data);
    }

/**
     * Delete the file at a given path.
     *
     * @param  string|array  $paths
     * @return bool
     */
    public function delete($paths)
    {
        $paths = is_array($paths) ? $paths : func_get_args();

foreach ($paths as $path) {
            try {
                $this->driver->delete($path);
            } catch (FileNotFoundException $e) {
                //
            }
        }

return true;
    }

/**
     * Copy a file to a new location.
     *
     * @param  string  $from
     * @param  string  $to
     * @return bool
     */
    public function copy($from, $to)
    {
        return $this->driver->copy($from, $to);
    }

/**
     * Move a file to a new location.
     *
     * @param  string  $from
     * @param  string  $to
     * @return bool
     */
    public function move($from, $to)
    {
        return $this->driver->rename($from, $to);
    }

/**
     * Get the file size of a given file.
     *
     * @param  string  $path
     * @return int
     */
    public function size($path)
    {
        return $this->driver->getSize($path);
    }

/**
     * Get the mime-type of a given file.
     *
     * @param  string  $path
     * @return string|false
     */
    public function mimeType($path)
    {
        return $this->driver->getMimetype($path);
    }

/**
     * Get the file's last modification time.
     *
     * @param  string  $path
     * @return int
     */
    public function lastModified($path)
    {
        return $this->driver->getTimestamp($path);
    }

/**
     * Get the URL for the file at the given path.
     *
     * @param  string  $path
     * @return string
     */
    public function url($path)
    {
        $adapter = $this->driver->getAdapter();

if ($adapter instanceof AwsS3Adapter) {
            $path = $adapter->getPathPrefix().$path;

return $adapter->getClient()->getObjectUrl($adapter->getBucket(), $path);
        } elseif ($adapter instanceof LocalAdapter) {
            return '/storage/'.$path;
        } elseif (method_exists($adapter, 'getUrl')) {
            return $adapter->getUrl($path);
        } else {
            throw new RuntimeException('This driver does not support retrieving URLs.');
        }
    }

/**
     * Get an array of all files in a directory.
     *
     * @param  string|null  $directory
     * @param  bool  $recursive
     * @return array
     */
    public function files($directory = null, $recursive = false)
    {
        $contents = $this->driver->listContents($directory, $recursive);

return $this->filterContentsByType($contents, 'file');
    }

/**
     * Get all of the files from the given directory (recursive).
     *
     * @param  string|null  $directory
     * @return array
     */
    public function allFiles($directory = null)
    {
        return $this->files($directory, true);
    }

/**
     * Get all of the directories within a given directory.
     *
     * @param  string|null  $directory
     * @param  bool  $recursive
     * @return array
     */
    public function directories($directory = null, $recursive = false)
    {
        $contents = $this->driver->listContents($directory, $recursive);

return $this->filterContentsByType($contents, 'dir');
    }

/**
     * Get all (recursive) of the directories within a given directory.
     *
     * @param  string|null  $directory
     * @return array
     */
    public function allDirectories($directory = null)
    {
        return $this->directories($directory, true);
    }

/**
     * Create a directory.
     *
     * @param  string  $path
     * @return bool
     */
    public function makeDirectory($path)
    {
        return $this->driver->createDir($path);
    }

/**
     * Recursively delete a directory.
     *
     * @param  string  $directory
     * @return bool
     */
    public function deleteDirectory($directory)
    {
        return $this->driver->deleteDir($directory);
    }

/**
     * Get the Flysystem driver.
     *
     * @return \League\Flysystem\FilesystemInterface
     */
    public function getDriver()
    {
        return $this->driver;
    }

/**
     * Filter directory contents by type.
     *
     * @param  array  $contents
     * @param  string  $type
     * @return array
     */
    protected function filterContentsByType($contents, $type)
    {
        return Collection::make($contents)
            ->where('type', $type)
            ->pluck('path')
            ->values()
            ->all();
    }

/**
     * Parse the given visibility value.
     *
     * @param  string|null  $visibility
     * @return string|null
     *
     * @throws \InvalidArgumentException
     */
    protected function parseVisibility($visibility)
    {
        if (is_null($visibility)) {
            return;
        }

switch ($visibility) {
            case FilesystemContract::VISIBILITY_PUBLIC:
                return AdapterInterface::VISIBILITY_PUBLIC;
            case FilesystemContract::VISIBILITY_PRIVATE:
                return AdapterInterface::VISIBILITY_PRIVATE;
        }

throw new InvalidArgumentException('Unknown visibility: '.$visibility);
    }

/**
     * Pass dynamic methods call onto Flysystem.
     *
     * @param  string  $method
     * @param  array  $parameters
     * @return mixed
     *
     * @throws \BadMethodCallException
     */
    public function __call($method, array $parameters)
    {
        return call_user_func_array([$this->driver, $method], $parameters);
    }
}