<?php
declare(strict_types=1);

namespace addon\haonav\controller\trait;

use think\facade\Cache;
use think\facade\Db;
use think\Response;
use addon\haonav\model\Configure as ConfigureModel;
use addon\haonav\model\Ad as AdModel;

/**
 * Index 控制器共享 helper
 * - 配置 / SEO / 用户 / 广告位 helper 被多数 trait 调用，集中放此处
 * - 静态资源输出（Favicon / Snapshot）也共用，统一缓存头
 */
trait BaseTrait
{
    /* ===================== 配置 / SEO ===================== */

    protected function siteConfig(): array
    {
        return [
            'default_engine' => ConfigureModel::getVal('default_engine', 'baidu'),
            'enable_submit'  => (int)ConfigureModel::getVal('enable_submit', '1'),
            'enable_hot_api' => (int)ConfigureModel::getVal('enable_hot_api', '0'),
        ];
    }

    /**
     * 外观背景配置注入（背景图 / 遮罩 / 随机变换色），
     * 供前端 nav-theme.js 读取：window.NavAppearance。
     */
    protected function assignAppearance(): void
    {
        $this->view->assign('appearanceJson', json_encode([
            'image'    => (string)ConfigureModel::getVal('bg_image', ''),
            'mask'     => (int)ConfigureModel::getVal('bg_mask', 35),
            'random'   => (int)ConfigureModel::getVal('bg_random', 0),
            'festival' => (int)ConfigureModel::getVal('festival_theme', 1),
        ], JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE));
    }

    protected function seoConfig(): array
    {
        return [
            'title'       => (string)ConfigureModel::getVal('seo_title', '网址导航 - 精选实用网站大全'),
            'keywords'    => (string)ConfigureModel::getVal('seo_keywords', '网址导航,常用网址,网站大全,上网导航'),
            'description' => (string)ConfigureModel::getVal('seo_description', '简洁实用的网址导航，收录精选优质网站，支持分类浏览、站内搜索、热门排行与网址投稿。'),
        ];
    }

    protected function assignSeo(): array
    {
        $seo = $this->seoConfig();
        $this->view->assign('seo', $seo);
        $this->view->assign('siteUrl', $this->request->domain());
        return $seo;
    }

    /* ===================== 用户 / 权限 ===================== */

    protected function uid(): int
    {
        if ($this->auth && $this->auth->isLogin) {
            $info = $this->auth->info;
            if (is_array($info)) {
                return (int)($info['id'] ?? 0);
            }
            return (int)($info->id ?? 0);
        }
        return 0;
    }

    /* ===================== 广告位 / 点击统计 ===================== */

    protected function assignAds()
    {
        $this->view->assign('ads', AdModel::allActiveBySlot());
    }

    /**
     * 点击时段聚合（供后台「点击热力图」）。表结构首次访问自愈，
     * 写入失败静默不影响跳转。仅按 (link_id, date, hour) 聚合，
     * 全站每天最多 N链接×24 行，规模可控。
     */
    protected function recordClickStat(int $linkId, int $cid): void
    {
        $table = 'wxapp_haonav_click_stats';
        try {
            $ymd = date('Y-m-d');
            $hr  = (int)date('G');
            Db::execute(
                "INSERT INTO `$table` (`link_id`,`cid`,`date`,`hour`,`clicks`) VALUES (?,?,?,?,1) " .
                    "ON DUPLICATE KEY UPDATE `clicks` = `clicks` + 1",
                [$linkId, $cid, $ymd, $hr]
            );
        } catch (\Throwable $e) {
            // 统计写入失败不影响跳转
        }
    }

    /* ===================== 静态资源输出（Favicon / Snapshot 共享） ===================== */

    protected function serveFile(string $path)
    {
        $ext = strtolower(pathinfo($path, PATHINFO_EXTENSION));
        $map = [
            'png'  => 'image/png',
            'jpg'  => 'image/jpeg',
            'jpeg' => 'image/jpeg',
            'gif'  => 'image/gif',
            'ico'  => 'image/x-icon',
            'svg'  => 'image/svg+xml',
            'webp' => 'image/webp',
        ];
        $ct   = $map[$ext] ?? 'image/png';
        $data = file_get_contents($path);
        return Response::create($data)->header([
            'Content-Type'  => $ct,
            'Cache-Control' => 'public, max-age=86400',
            'Expires'       => gmdate('D, d M Y H:i:s', time() + 86400) . ' GMT',
        ]);
    }

    protected function serveDefault()
    {
        $path = app()->getRootPath() . 'public/static/haonav/img/default.png';
        if (is_file($path)) {
            return $this->serveFile($path);
        }
        $gif = base64_decode('R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7');
        return Response::create($gif)->header([
            'Content-Type'  => 'image/gif',
            'Cache-Control' => 'public, max-age=3600',
        ]);
    }
}