<?php

declare(strict_types=1);

namespace app\admin\controller;

use app\admin\BaseController;
use think\exception\ValidateException;
use think\facade\Db;
use think\facade\Session;
use think\response\Json;
use think\db\exception\DbException;
use app\model\FrontMenu;

class FrontMenuController extends BaseController
{
        /**
     * 获取前端导航接口
     * @return \think\response\Json
     */
    public function getFrontMenus()
    {
        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()
            ]);
        }
    }

    /**
     * 创建新菜单
     * @return \think\response\Json
     */
    public function createFrontMenu()
    {
        try {
            // 获取请求参数
            $data = $this->request->param();

            // 验证参数
            $this->validate($data, [
                'title|菜单名称' => 'require|max:50',
                'pid|上级菜单ID' => 'integer',
                'type|菜单类型' => 'require|in:1,2,3,4',
                'sort|排序号' => 'integer',
                'path|路由路径' => 'max:200',
                'component_path|组件路径' => 'max:200',
                'desc|描述' => 'max:500',
            ]);

            // 准备菜单数据
            $menuData = [
                'pid' => $data['pid'] ?? 0,
                'title' => $data['title'],
                'type' => $data['type'],
                'sort' => $data['sort'] ?? 0,
                'path' => $data['path'] ?? '',
                'component_path' => $data['component_path'] ?? '',
                'image' => $data['image'] ?? '',
                'desc' => $data['desc'] ?? '',
                'create_time' => date('Y-m-d H:i:s')
            ];

            // 创建菜单
            $result = FrontMenu::insertGetId($menuData);

            if ($result === false) {
                return json([
                    'code' => 500,
                    'msg' => 'fail'
                ]);
            }

            // 记录操作日志
            $this->logSuccess('前端导航管理', '创建前端导航', ['id' => $result]);
            return json([
                'code' => 200,
                'msg' => 'success'
            ]);
        } catch (ValidateException $e) {
            // 记录失败日志
            $this->logFail('前端导航管理', '创建前端导航', $e->getMessage());
            return json([
                'code' => 500,
                'msg' => 'fail：' . $e->getMessage()
            ]);
        }
    }

    /**
     * 编辑前端导航
     * @param int $id 前端导航ID
     * @return \think\response\Json
     */
    public function editFrontMenu(int $id)
    {
        try {
            // 获取请求参数
            $data = $this->request->param();

            // 验证参数
            $this->validate($data, [
                'title|菜单名称' => 'require|max:50',
                'pid|上级菜单ID' => 'integer',
                'type|菜单类型' => 'require|in:1,2,3,4',
                'sort|排序号' => 'integer',
                'path|路由路径' => 'max:200',
                'component_path|组件路径' => 'max:200',
                'desc|描述' => 'max:500',
            ]);

            // 准备更新数据
            $updateData = [
                'title' => $data['title'],
                'pid' => $data['pid'] ?? null,
                'type' => $data['type'],
                'path' => $data['path'] ?? null,
                'component_path' => $data['component_path'] ?? null,
                'image' => $data['image'] ?? null,
                'desc' => $data['desc'] ?? null,
                'sort' => $data['sort'] ?? 0,
                'update_time' => date('Y-m-d H:i:s')
            ];

            // 执行更新
            FrontMenu::where('id', $id)->update($updateData);

            // 获取更新后的菜单信息
            $menu = FrontMenu::where('id', $id)->find();

            // 记录操作日志
            $this->logSuccess('前端导航管理', '更新前端导航', ['id' => $id]);
            return json([
                'code' => 200,
                'msg' => 'success',
                'data' => $menu ? $menu->toArray() : []
            ]);
        } catch (ValidateException $e) {
            // 记录失败日志
            $this->logFail('前端导航管理', '更新前端导航', $e->getMessage());
            return json([
                'code' => 400,
                'msg' => $e->getError()
            ]);
        } catch (DbException $e) {
            // 记录失败日志
            $this->logFail('前端导航管理', '更新前端导航', $e->getMessage());
                return json([
                'code' => 500,
                'msg' => 'fail：' . $e->getMessage(),
                'data' => $e->getTraceAsString()
            ]);
        }
    }


    public function deleteFrontMenu(int $id)
    {
        try {
            // 检查是否有子前端导航
$hasChildren = FrontMenu::where('pid', $id)
                ->where('pid', $id)
                ->where('delete_time', null)
                ->count() > 0;

            if ($hasChildren) {
                return json([
                    'code' => 400,
                    'msg' => '该前端导航下有子导航，无法删除'
                ]);
            }

            // 逻辑删除前端导航
            $result = FrontMenu::where('id', $id)
                ->where('id', $id)
                ->where('delete_time', null)
                ->update([
                    'delete_time' => date('Y-m-d H:i:s'),
                    'update_time' => date('Y-m-d H:i:s')
                ]);

            if ($result === false) {
                return json([
                    'code' => 500,
                    'msg' => 'fail'
                ]);
            }

            // 记录操作日志
            $this->logSuccess('前端导航管理', '删除前端导航', ['id' => $id]);
            return json([
                'code' => 200,
                'msg' => 'success'
            ]);
        } catch (ValidateException $e) {
            // 记录失败日志
            $this->logFail('前端导航管理', '删除前端导航', $e->getMessage());
            return json([
                'code' => 500,
                'msg' => 'fail：' . $e->getMessage()
            ]);
        } catch (DbException $e) {
            // 记录失败日志
            $this->logFail('前端导航管理', '删除前端导航', $e->getMessage());
            return json([
                'code' => 500,
                'msg' => 'fail：' . $e->getMessage()
            ]);
        }
    }

    /**
     * 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;
    }
}