<?php

namespace App\Services\AdminRealtime;

use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;

/**
 * 会员代理申请由 melbet_sport-api 直接插入 agent_applications，不经 bot-28 模型钩子。
 * relay 每轮按主键游标找出新申请并登记 created 事件；审核等修改在 bot-28 内经模型钩子登记。
 *
 * 游标存缓存：首次运行（或缓存丢失）从当前最大 id 开始，不补推历史申请；
 * 列表与待处理角标不受影响，前端重连时会重新拉列表。
 */
final class AdminRealtimeAgentApplications
{
    private const CURSOR = 'admin_realtime:agent_applications_cursor';
    private const BATCH = 200;

    public static function scan(): void
    {
        if (!config('admin_realtime.enabled')) return;
        try {
            $cursor = Cache::get(self::CURSOR);
            if ($cursor === null) {
                Cache::forever(self::CURSOR, (int) DB::table('agent_applications')->max('id'));
                return;
            }
            $ids = DB::table('agent_applications')->where('id', '>', (int) $cursor)
                ->orderBy('id')->limit(self::BATCH)->pluck('id')->map(static fn($id): int => (int) $id)->all();
            if (!$ids) return;

            // 先登记再推进游标；登记失败抛出，下轮重试（最多重复，不会漏）。
            $now = now('Asia/Shanghai')->format('Y-m-d H:i:s');
            DB::table('admin_realtime_events')->insert(array_map(static fn(int $id): array => [
                'resource' => 'agent_applications', 'resource_id' => (string) $id, 'action' => 'created',
                'source' => 'melbet_sport-api', 'created_at' => $now,
            ], $ids));
            Cache::forever(self::CURSOR, max($ids));
        } catch (\Throwable $e) {
            Log::channel('realtime')->error('admin_realtime_agent_application_scan_failed', ['error' => $e->getMessage()]);
        }
    }
}