<?php
// +----------------------------------------------------------------------
// | YwxApp [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2026-2036 http://ywxapp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Author: ywxapp<admin@ywxapp.cn>
// +----------------------------------------------------------------------

declare(strict_types=1);

namespace addon\haonav\controller;
use ywxapp\controller\FrontendBase;

use think\facade\Cache;
use addon\haonav\model\Configure as ConfigureModel;

/**
 * 首页小组件：实时热搜榜 + 天气（服务端代理 + 缓存，规避跨域并保护第三方接口）
 *
 * @author ywxapp <admin@ywxapp.cn>
 */
class Widget extends FrontendBase
{
    protected $noNeedLogin = ['*'];
    protected $noNeedVerify = ['*'];

    protected function initialize()
    {
    }

    /**
     * 实时热搜榜（缓存 10 分钟）
     * GET /haonav/widget/hot?source=baidu|weibo|zhihu
     */
    public function hot()
    {
        if ((int)ConfigureModel::getVal('enable_hot_api', '0') !== 1) {
            return $this->result->success([], '未开启');
        }
        $source = $this->request->param('source', ConfigureModel::getVal('hot_api_source', 'baidu'));
        $source = in_array($source, ['baidu', 'weibo', 'zhihu'], true) ? $source : 'baidu';

        $cacheKey = 'haonav_hot_' . $source;
        $data     = Cache::get($cacheKey);
        if (is_array($data)) {
            return $this->result->success($data, '缓存');
        }

        $map = [
            'baidu' => 'https://api.vvhan.com/api/hotlist/baiduRD',
            'weibo' => 'https://api.vvhan.com/api/hotlist/wbHot',
            'zhihu' => 'https://api.vvhan.com/api/hotlist/zhihuHot',
        ];
        $list = $this->fetchHot($map[$source]);
        // 即便为空也短缓存，避免频繁打第三方
        Cache::set($cacheKey, $list, $list ? 600 : 120);
        return $this->result->success($list);
    }

    /**
     * 天气（缓存 30 分钟）
     * GET /haonav/widget/weather?city=北京
     */
    public function weather()
    {
        if ((int)ConfigureModel::getVal('enable_weather', '0') !== 1) {
            return $this->result->success([], '未开启');
        }
        $city = trim((string)$this->request->param('city', ConfigureModel::getVal('weather_city', '')));

        $cacheKey = 'haonav_weather_' . ($city !== '' ? md5($city) : 'auto');
        $data     = Cache::get($cacheKey);
        if (is_array($data) && $data) {
            return $this->result->success($data, '缓存');
        }

        $info = $this->fetchWeather($city);
        if ($info) {
            Cache::set($cacheKey, $info, 1800);
            return $this->result->success($info);
        }
        return $this->result->success([], '暂无数据');
    }

    /**
     * 拉取并归一化热搜列表 -> [ {title,url,hot}, ... ]
     */
    protected function fetchHot(string $api): array
    {
        $json = $this->httpGet($api);
        if (!$json) {
            return [];
        }
        $arr = json_decode($json, true);
        if (!is_array($arr)) {
            return [];
        }
        $rows = $arr['data'] ?? ($arr['result'] ?? []);
        if (!is_array($rows)) {
            return [];
        }
        $out = [];
        foreach ($rows as $r) {
            if (!is_array($r)) {
                continue;
            }
            $title = $r['title'] ?? ($r['name'] ?? '');
            if ($title === '') {
                continue;
            }
            $out[] = [
                'title' => (string)$title,
                'url'   => (string)($r['url'] ?? ($r['mobil_url'] ?? '')),
                'hot'   => (string)($r['hot'] ?? ($r['num'] ?? '')),
            ];
            if (count($out) >= 20) {
                break;
            }
        }
        return $out;
    }

    /**
     * 拉取并归一化天气 -> {city,type,low,high,tips,...}
     */
    protected function fetchWeather(string $city)
    {
        $api = 'https://api.vvhan.com/api/weather';
        if ($city !== '') {
            $api .= '?city=' . urlencode($city);
        }
        $json = $this->httpGet($api);
        if (!$json) {
            return false;
        }
        $arr = json_decode($json, true);
        if (!is_array($arr) || empty($arr['success'])) {
            return false;
        }
        $today = $arr['data'][0] ?? [];
        return [
            'city' => (string)($arr['city'] ?? $city),
            'date' => (string)($today['date'] ?? ''),
            'type' => (string)($today['type'] ?? ''),
            'low'  => (string)($today['low'] ?? ''),
            'high' => (string)($today['high'] ?? ''),
            'fx'   => (string)($today['fengxiang'] ?? ''),
            'tips' => (string)($arr['tip'] ?? ''),
        ];
    }

    /**
     * 轻量 GET（优先 Guzzle，失败回退 file_get_contents），失败返回 ''
     */
    protected function httpGet(string $url): string
    {
        try {
            if (class_exists(\GuzzleHttp\Client::class)) {
                $client = new \GuzzleHttp\Client(['timeout' => 5, 'verify' => false]);
                $resp   = $client->get($url, ['headers' => ['Member-Agent' => 'Mozilla/5.0']]);
                return (string)$resp->getBody();
            }
            $ctx = stream_context_create(['http' => ['timeout' => 5, 'header' => "Member-Agent: Mozilla/5.0\r\n"]]);
            $body = @file_get_contents($url, false, $ctx);
            return $body === false ? '' : (string)$body;
        } catch (\Throwable $e) {
            return '';
        }
    }
}