<?php
/*
 * @Author: YwxApp <ywx@ywxapp.cn>
 * @Date: 2026-07-28 00:00:00
 * @Description: 搜索蜘蛛统计
 * @FilePath: \ywxapp_dev\app\backend\controller\Spider.php
 * @CustomString: Copyright (c) 2026 YwxApp
 */

declare(strict_types=1);
namespace app\backend\controller;

use think\facade\Db;
use ywxapp\controller\BackendBase;
use ywxapp\library\SpiderDetect;

/**
 * 搜索蜘蛛统计
 *
 * 数据来源：全局中间件 ywxapp\middleware\SpiderStat 写入的
 * spider_log（明细）与 spider_stat（按日聚合）两张表。
 *
 * @author ywxapp <admin@ywxapp.cn>
 */
class Spider extends BackendBase
{
    protected $noNeedLogin = [];
    protected $noNeedVerify = [];

    /**
     * 抓取明细列表（页面 + Ajax）
     */
    public function index()
    {
        if ($this->request->isAjax()) {
            $page   = $this->request->param('page/d', 1);
            $limit  = $this->request->param('limit/d', 15);
            $spider = $this->request->param('spider', '');
            $ip     = $this->request->param('ip', '');
            $url    = $this->request->param('url', '');
            $date   = $this->request->param('date', ''); // YYYY-MM-DD

            $query = Db::name('spider_log');
            if ($spider !== '') {
                $query->where('spider', $spider);
            }
            if ($ip !== '') {
                $query->where('ip', 'like', $ip . '%');
            }
            if ($url !== '') {
                $query->where('url', 'like', '%' . $url . '%');
            }
            if ($date !== '' && ($ts = strtotime($date)) !== false) {
                $query->whereBetween('create_at', [$ts, $ts + 86399]);
            }

            try {
                $list  = $query->order('id', 'desc')
                    ->paginate(['page' => $page, 'list_rows' => $limit]);
                $items = $list->items();
                $labels = SpiderDetect::labels();
                foreach ($items as &$item) {
                    $item['spider_text'] = $labels[$item['spider']] ?? $item['spider'];
                    $item['time_text']   = date('Y-m-d H:i:s', (int) $item['create_at']);
                }
                unset($item);
                $this->result->setCount($list->total())->success($items);
            } catch (\Throwable $e) {
                // 表尚未创建（还没有蜘蛛来访过）：返回空列表而非报错
                $this->result->setCount(0)->success([]);
            }
        }

        return $this->fetch();
    }

    /**
     * 汇总统计：各蜘蛛 今日/7日/30日/总量 + 近30日逐日趋势（图表用）
     */
    public function stats()
    {
        $labels = SpiderDetect::labels();
        $today  = date('Y-m-d');
        $d7     = date('Y-m-d', strtotime('-6 days'));
        $d30    = date('Y-m-d', strtotime('-29 days'));

        $summary = [];
        $trend   = ['dates' => [], 'series' => []];

        try {
            $rows = Db::name('spider_stat')
                ->where('stat_date', '>=', $d30)
                ->select()
                ->toArray();
            $totalRows = Db::name('spider_stat')
                ->field('spider, SUM(`count`) AS total')
                ->group('spider')
                ->select()
                ->toArray();

            // 各蜘蛛汇总
            $map = [];
            foreach ($totalRows as $r) {
                $map[$r['spider']] = [
                    'spider' => $r['spider'],
                    'label'  => $labels[$r['spider']] ?? $r['spider'],
                    'today'  => 0,
                    'week'   => 0,
                    'month'  => 0,
                    'total'  => (int) $r['total'],
                ];
            }
            foreach ($rows as $r) {
                $key = $r['spider'];
                if (! isset($map[$key])) {
                    continue;
                }
                $c = (int) $r['count'];
                $map[$key]['month'] += $c;
                if ($r['stat_date'] >= $d7) {
                    $map[$key]['week'] += $c;
                }
                if ($r['stat_date'] === $today) {
                    $map[$key]['today'] += $c;
                }
            }
            usort($map, fn ($a, $b) => $b['total'] <=> $a['total']);
            $summary = array_values($map);

            // 近30日逐日趋势（每蜘蛛一条线）
            $dates = [];
            for ($i = 29; $i >= 0; $i--) {
                $dates[] = date('Y-m-d', strtotime("-{$i} days"));
            }
            $trend['dates'] = $dates;
            $bySpider = [];
            foreach ($rows as $r) {
                $bySpider[$r['spider']][$r['stat_date']] = (int) $r['count'];
            }
            foreach ($summary as $s) {
                $key  = $s['spider'];
                $line = [];
                foreach ($dates as $d) {
                    $line[] = $bySpider[$key][$d] ?? 0;
                }
                $trend['series'][] = ['name' => $s['label'], 'data' => $line];
            }
        } catch (\Throwable $e) {
            // 表未创建：返回空数据
        }

        $this->result->success(['summary' => $summary, 'trend' => $trend]);
    }

    /**
     * 清理明细日志（保留最近 N 天，聚合表不动，历史报表不受影响）
     */
    public function clear()
    {
        if (! ($this->request->isAjax() && $this->request->isPost())) {
            $this->result->error('请求方式错误', 405);
        }
        $days = $this->request->param('days/d', 30);
        $days = max(1, min(365, $days));
        try {
            $count = Db::name('spider_log')
                ->where('create_at', '<', time() - $days * 86400)
                ->delete();
            $this->result->success('', "已清理 {$count} 条 {$days} 天前的明细日志");
        } catch (\Throwable $e) {
            $this->result->error('清理失败: ' . $e->getMessage());
        }
    }
}