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Filename : FileStorageSystem.php
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<?php

namespace App\Libraries;

use App\Models\File;
use Illuminate\Support\Facades\Storage;
use Illuminate\Support\Str;
use Exception;
use Illuminate\Http\UploadedFile;

class FileStorageSystem
{
    /**
     * Store a file and save its details to the database.
     *
     * @param mixed $file The file to be stored.
     * @param string $namespace The namespace for the file.
     * @param string $storageLocation The storage location ('local' or 's3').
     * @return string The file handle (UUID).
     */
    public function storeFile($file, $namespace, $storageLocation = 'local')
    {
        try {
            $fileHandle = Str::uuid()->toString();
            $originalFileName = $file->getClientOriginalName();
            $filePath = $file->storeAs($namespace, $fileHandle . '.' . $file->getClientOriginalExtension(), $storageLocation);

            $fileModel = File::create([
                'file_handle' => $fileHandle,
                'original_file_name' => $originalFileName,
                'storage_location' => $storageLocation,
                'mime_type' => $file->getMimeType(),
                'file_size_bytes' => $file->getSize(),
                'namespace' => $namespace,
                'file_path' => $filePath,
            ]);

            return $fileModel;
        } catch (Exception $e) {
            throw new Exception("Failed to store file: " . $e->getMessage());
        }
    }

    /**
     * Delete a file from storage and remove its record from the database.
     *
     * @param string $fileHandle The file handle (UUID).
     * @return bool
     */
    public function deleteFile($fileHandle)
    {
        $fileRecord = File::where('file_handle', $fileHandle)->first();

        if (!$fileRecord) {
            throw new Exception("File not found.");
        }

        $storageLocation = $fileRecord->storage_location;

        if (Storage::disk($storageLocation)->exists($fileRecord->file_path)) {
            Storage::disk($storageLocation)->delete($fileRecord->file_path);
        }

        return $fileRecord->delete();
    }

    /**
     * Retrieve a file's content from storage.
     *
     * @param string $fileHandle The file handle (UUID).
     * @return mixed The file content.
     */
    public function retrieveFile($fileHandle)
    {
        $fileRecord = File::where('file_handle', $fileHandle)->first();

        if (!$fileRecord) {
            throw new Exception("File not found.");
        }

        $storageLocation = $fileRecord->storage_location;

        if (!Storage::disk($storageLocation)->exists($fileRecord->file_path)) {
            throw new Exception("File not found in storage.");
        }

        return Storage::disk($storageLocation)->get($fileRecord->file_path);
    }

    /**
     * Retrieve a file's path from storage.
     *
     * @param string $fileHandle The file handle (UUID).
     * @return string The file path.
     */
    public function retrieveFilePath($fileHandle)
    {
        $fileRecord = File::where('file_handle', $fileHandle)->first();

        if (!$fileRecord) {
            throw new Exception("File not found.");
        }

        return $fileRecord->file_path;
    }

    public function retrieveAsUploadedFile($fileHandle) : UploadedFile {
        $fileRecord = File::where('file_handle', $fileHandle)->first();
        $file_path =  $this->retrieveFilePath($fileHandle);
        $local_file_path = storage_path( 'app/'. $file_path);

        $uploadedFile = new UploadedFile(
            $local_file_path,
            $fileRecord->original_file_name,
            null,
            null,
            true
        );
        return $uploadedFile;
    }
}


?>