<?php

namespace App\Classes;

use App\Classes\Traits\ManagesMetadata;
use Illuminate\Filesystem\FilesystemAdapter;
use Illuminate\Support\Str;

class AttachmentsManager
{
    use ManagesMetadata;

    /**
     * Manages images
     */
    const Images = 'images';

    /**
     * Manages sounds
     */
    const Sounds = 'sounds';

    /**
     * Manages videos
     */
    const Videos = 'videos';

    private string $targetForFiles;

    private string $metadataFilePath;

    private MetadataManager $manager;

    public function __construct(protected string $kind, protected string $root, protected FilesystemAdapter $disk)
    {
        $this->metadataFilePath = sprintf('%s%s.json', $root, $kind);
        $this->targetForFiles   = sprintf('%s%s', $root, $kind);
        $this->manager          = new MetadataManager($this->metadataFilePath, $disk);
    }

    /**
     * Add a file to a named history and return attachment's reference
     */
    public function addToHistory(string $name, array $data): string
    {
        $reference = $this->add($data);

        $this->manager['history'][$name][] = [
            'reference' => $reference,
            'date'      => now(),
        ];

        return $reference;
    }

    /**
     * Add a single file to the bundle
     */
    public function add(array $data): string
    {
        $reference = $this->generateNewReference();

        $filename = $data['filename'];
        $contents = $data['contents'];

        unset($data['contents']);

        $fullPath     = sprintf('%s/%s', $this->targetForFiles, $filename);
        $relativePath = sprintf('%s/%s', $this->kind, $filename);

        $data['filename'] = $relativePath;

        $this->disk->put($fullPath, $contents);

        $this->manager['files'][$reference] = $data;

        return $reference;
    }

    /**
     * Return a boolean value indicating if the file actually exists on disk
     */
    public function exists()
    {
        return $this->disk->exists($this->metadataFilePath);
    }

    /**
     * Store file on disk
     */
    public function save(): bool
    {
        return $this->manager->save();
    }

    /**
     * Generate new, random reference for a file
     */
    private function generateNewReference(): string
    {
        return Str::random(6);
    }
}