<?php

namespace App\Jobs;

use App\Model\SysOssTasks;
use App\Service\FileUploadService;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;
use Symfony\Component\Console\Output\OutputInterface;

class ProcessOssTask implements ShouldQueue
{
    use Dispatchable, InteractsWithQueue, Queueable, SerializesModels;

    /**
     * 任务超时时间（秒）
     * OSS 上传受网络影响较大，设置 120s 较为稳妥
     */
    public $timeout = 120;

    public function __construct()
    {
    }

    public function handle()
    {
        $service = new FileUploadService();

        try {
            // 1. 提取本次 Job 要处理的 ID 集合 (每次拿 50 条)
            // 这样可以确保这个 Job 实例拥有这批 ID 的“专属权”
            $targetIds = SysOssTasks::where('status', 0)
                ->limit(50)
                ->pluck('id')
                ->toArray();

            if (empty($targetIds)) {
                return; // 没有待处理任务直接退出
            }

            // 2. 批量锁定：将这批 ID 状态改为 3
            SysOssTasks::whereIn('id', $targetIds)->update([
                'status' => SysOssTasks::status_three,
                'upd_time' => time(),
            ]);

            // 3. 仅针对这批锁定的 ID 进行处理
            // 使用 chunkById 预防大数据量下的分页偏移问题
            SysOssTasks::whereIn('id', $targetIds)
                ->chunkById(50, function ($tasks) use ($service) {
                    foreach ($tasks as $task) {
                        $status_db = SysOssTasks::status_two; // 默认失败

                        try {
                            if ($task->type == SysOssTasks::type_one) {
                                // 类型1：删除/同步旧数据逻辑
                                list($status, $msg) = $service->createOssUploadOldSingle($task->url);
                                if ($status) $status_db = SysOssTasks::status_one;
                            } elseif ($task->type == SysOssTasks::type_two) {
                                // 类型2：新增/上传逻辑
                                list($status, $msg) = $service->createOssUploadSingle($task->url);
                                if ($status) $status_db = SysOssTasks::status_one;
                            } else {
                                $msg = "单条失败：类型不存在";
                            }
                        } catch (\Exception $innerEx) {
                            $status_db = SysOssTasks::status_two;
                            $msg = "上传组件异常: " . $innerEx->getMessage();
                        }

                        // 4. 更新最终状态
                        $task->update([
                            'status' => $status_db,
                            'remark' => $msg ?? '',
                            'upd_time' => time()
                        ]);
                    }
                });

        } catch (\Throwable $e) {
            if (!empty($targetIds)) {
                SysOssTasks::whereIn('id', $targetIds)
                    ->where('status', SysOssTasks::status_three)
                    ->update([
                        'status' => SysOssTasks::status_two,
                        'remark' => $e->getMessage(),
                        'upd_time' => time(),
                    ]);
            }
            $this->delete();
        }
    }

    /**
     * 辅助输出方法
     */
    protected function echoMessage(OutputInterface $output, $data)
    {
        $output->writeln(json_encode($data));
    }
}