<?php

declare(strict_types=1);

namespace app\index\controller;

use app\model\Banner;
use app\index\BaseController;
use app\model\FrontMenu;
use app\model\OnePage;
use think\db\exception\DbException;
use think\facade\Env;

class Index extends BaseController
{
    public function index()
    {
        return view('index/index');
    }

    /**
     * 获取日志列表
     */
    public function getLogs()
    {
        $logPath = Env::get('runtime_path') . 'log/';
        $logs = [];

        // 读取最近的日志文件
        $files = glob($logPath . '*.log');
        if ($files) {
            // 按修改时间排序，最新的在前
            usort($files, function($a, $b) {
                return filemtime($b) - filemtime($a);
            });

            // 读取最新的日志文件
            $latestFile = reset($files);
            if (file_exists($latestFile)) {
                $content = file_get_contents($latestFile);
                $lines = explode("\n", $content);
                
                // 倒序遍历，只取最近的100条
                $count = 0;
                for ($i = count($lines) - 1; $i >= 0 && $count < 100; $i--) {
                    if (!empty(trim($lines[$i]))) {
                        $logs[] = $lines[$i];
                        $count++;
                    }
                }
                
                // 再倒序回来，使最新的日志在最后
                $logs = array_reverse($logs);
            }
        }

        return json([
            'code' => 200,
            'msg' => 'success',
            'data' => $logs
        ]);
    }

    /**
     * 获取前端导航接口
     * @return \think\response\Json
     */
    public function getHeadMenu()
    {
        try {
            // 获取所有未删除的菜单
            $frontMenus = FrontMenu::where('delete_time', null)
                ->field('id,pid,title,type,image,path,component_path,sort,desc')
                ->order('sort', 'desc')
                ->select()
                ->toArray(); // 转换为数组

            // 使用 buildFrontMenuTree 构建树形结构
            $treeFrontMenus = $this->buildFrontMenuTree($frontMenus);

            return json([
                'code' => 200,
                'msg' => 'success',
                'data' => $treeFrontMenus
            ]);
        } catch (DbException $e) {
            return json([
                'code' => 500,
                'msg' => 'fail：' . $e->getMessage(),
                'data' => $e->getTraceAsString()
            ]);
        }
    }

    /**
     * 构建前端导航树形结构
     * @param array $frontMenus 前端导航列表
     * @param int $pid 父前端导航ID
     * @return array
     */
    private function buildFrontMenuTree(array $frontMenus, int $pid = 0): array
    {
        $tree = [];

        foreach ($frontMenus as $frontMenu) {
            // 将null的pid视为0处理
            $menuPid = is_null($frontMenu['pid']) ? 0 : $frontMenu['pid'];
            if ($menuPid == $pid) {
                $children = $this->buildFrontMenuTree($frontMenus, $frontMenu['id']);
                if (!empty($children)) {
                    $frontMenu['children'] = $children;
                }
                $tree[] = $frontMenu;
            }
        }

        // 按 sort 字段降序排序
        usort($tree, function ($a, $b) {
            $sortA = $a['sort'] ?? 0;
            $sortB = $b['sort'] ?? 0;
            return $sortB - $sortA;
        });

        return $tree;
    }

    /**
     * 根据路径获取单页内容
     * @param string $path 路由路径
     * @return \think\response\Json
     */
    public function getOnePageByPath($path = '')
    {
        try {
            // 从路由参数获取路径
            if (empty($path)) {
                // 如果没有路由参数，尝试从 pathinfo 获取
                $requestPath = $this->request->pathinfo();
                $path = str_replace('onepage/', '', $requestPath);
            }
            
            // 确保路径以 / 开头
            if (empty($path) || $path[0] !== '/') {
                $path = '/' . $path;
            }
            
            // 解码路径
            $path = urldecode($path);
            
            // 查找对应路径的单页
            $onePage = OnePage::where('path', $path)
                ->where('status', 1)
                ->where('delete_time', null)
                ->find();

            if (!$onePage) {
                return json([
                    'code' => 404,
                    'msg' => '单页不存在或已禁用',
                    'data' => null
                ]);
            }

            return json([
                'code' => 200,
                'msg' => 'success',
                'data' => $onePage->toArray()
            ]);
        } catch (DbException $e) {
            return json([
                'code' => 500,
                'msg' => 'fail：' . $e->getMessage(),
                'data' => null
            ]);
        }
    }
}