<?php

declare(strict_types=1);

namespace App\Uploads\Services;

use Illuminate\Support\Facades\File;
use Illuminate\Support\Facades\Storage;
use RuntimeException;

final class FileMoveService
{
    /**
     * Copy draft directory to final location using staging dir; source remains untouched.
     */
    public function promoteDraft(string $uploadId, string $targetRelativeDir): void
    {
        $disk = Storage::disk('local');

        $sourceRelativeDir = 'tmp/drafts/' . $uploadId;
        if (! $disk->exists($sourceRelativeDir)) {
            throw new RuntimeException('Draft directory not found.');
        }

        $targetRelativeDir = trim($targetRelativeDir, '/');
        $stagingRelativeDir = $targetRelativeDir . '.__staging';

        if ($disk->exists($targetRelativeDir)) {
            throw new RuntimeException('Target publish directory already exists.');
        }

        if ($disk->exists($stagingRelativeDir)) {
            $disk->deleteDirectory($stagingRelativeDir);
        }

        $sourceAbs = $disk->path($sourceRelativeDir);
        $stagingAbs = $disk->path($stagingRelativeDir);
        $targetAbs = $disk->path($targetRelativeDir);

        if (! File::copyDirectory($sourceAbs, $stagingAbs)) {
            throw new RuntimeException('Failed to stage files for publish.');
        }

        if (! File::moveDirectory($stagingAbs, $targetAbs, false)) {
            $disk->deleteDirectory($stagingRelativeDir);
            throw new RuntimeException('Failed to move staged files to final location.');
        }
    }
}