<?php
namespace app\controller;

use support\Request;

use app\model\User;


class UserController
{
    public function hello(Request $request)
    {
        $default_name = 'webman';
        // 从get请求里获得name参数，如果没有传递name参数则返回$default_name
        $name = $request->get('name', $default_name);
        // 向浏览器返回字符串
        return response('hello ' . $name);
    }

    public function create(Request $request)
    {
        // 单条创建
        $user = User::create([
            'name' => 'webman',
            'age' => 3,
            'email' => 'webman@example.com',
            'tags' => ['php', 'webman', 'mongodb'] // MongoDB 原生数组
        ]);

        // 批量创建
        // $users = User::insert([
        //     ['name' => 'user1', 'age' => 20],
        //     ['name' => 'user2', 'age' => 22]
        // ]);

        return json([
            'success' => true,
            'id' => $user->_id, // 自动转为字符串
            'created_at' => $user->created_at->format('Y-m-d H:i:s')
        ]);
    }

    // 2. 查询文档（支持所有 Eloquent 查询方法）
    public function get(Request $request)
    {
        // 单条查询
        $user = User::where('name', 'webman')->first();
        // 或通过 ID 查询
        // $user = User::find('66e7d8...'); // _id 字符串

        // 多条查询（分页、排序、筛选）
        $users = User::where('age', '>=', 1)
            ->whereIn('tags', ['php']) // 数组字段查询
            ->orderBy('created_at', 'desc')
            ->paginate(10); // 自动分页（返回 total、per_page 等字段）

        // 聚合查询（统计、分组）
        $ageCount = User::where('age', '>=', 18)
            ->groupBy('age')
            ->selectRaw('age, count(_id) as total')
            ->get();

        return json([
            'user' => $user,
            'users' => $users->items(),
            'total' => $users->total(),
            'age_count' => $ageCount
        ]);
    }

    // 3. 更新文档
    public function update(Request $request)
    {
        $user = User::find($request->input('id'));
        if (!$user) {
            return json(['success' => false, 'msg' => '用户不存在'], 404);
        }

        // 单个更新
        $user->age = 4;
        $user->save();

        // 批量更新
        // User::where('name', 'webman')->update(['age' => 4]);

        return json(['success' => true, 'updated_at' => $user->updated_at]);
    }

    // 4. 删除文档
    public function delete(Request $request)
    {
        $user = User::find($request->input('id'));
        if (!$user) {
            return json(['success' => false, 'msg' => '用户不存在'], 404);
        }

        $user->delete();

        // 批量删除
        // User::where('age', '<', 18)->delete();

        return json(['success' => true]);
    }
}