<?php

namespace App\Console\Commands;

use Illuminate\Console\Command;
use Illuminate\Support\Facades\File;
use Illuminate\Support\Facades\Log;
use Carbon\Carbon;

class CleanScheduledTaskLogsCommand extends Command
{
    protected $signature = 'logs:clean-scheduled-tasks {--days=7 : 保留最近几天的日志}';

    protected $description = '清理定时任务日志文件，删除指定天数之前的日志';

    public function handle(): int
    {
        $days = (int) $this->option('days');
        $logPath = storage_path('logs/scheduled-tasks');

        if (!File::exists($logPath)) {
            Log::info('日志目录不存在，无需清理');
            return Command::SUCCESS;
        }

        $cutoffDate = Carbon::now()->subDays($days);
        Log::info("开始清理 {$days} 天前的定时任务日志...");
        Log::info("截止日期: {$cutoffDate->format('Y-m-d')}");

        $files = File::files($logPath);
        $deletedCount = 0;
        $totalSize = 0;

        foreach ($files as $file) {
            $filename = $file->getFilename();

            // 匹配日志文件名格式: task-name-YYYY-MM-DD.log
            if (preg_match('/-(\d{4}-\d{2}-\d{2})\.log$/', $filename, $matches)) {
                $fileDate = Carbon::parse($matches[1]);

                if ($fileDate->lt($cutoffDate)) {
                    $fileSize = $file->getSize();
                    $totalSize += $fileSize;

                    File::delete($file->getPathname());
                    $deletedCount++;

                    Log::info("已删除: {$filename} (" . $this->formatBytes($fileSize) . ")");
                }
            }
        }

        if ($deletedCount > 0) {
            Log::info("清理完成！共删除 {$deletedCount} 个日志文件，释放空间: " . $this->formatBytes($totalSize));
        } else {
            Log::info('没有需要清理的日志文件');
        }

        return Command::SUCCESS;
    }

    private function formatBytes(int $bytes): string
    {
        if ($bytes >= 1073741824) {
            return number_format($bytes / 1073741824, 2) . ' GB';
        } elseif ($bytes >= 1048576) {
            return number_format($bytes / 1048576, 2) . ' MB';
        } elseif ($bytes >= 1024) {
            return number_format($bytes / 1024, 2) . ' KB';
        }
        return $bytes . ' B';
    }
}