<?php

namespace App\Services;

use Illuminate\Support\Facades\DB;

class UserService
{
    /**
     * 从 JWT payload 获取用户完整信息
     * @param array|null $payload
     * @return object|null
     */
    public function getUserInfoFromPayload($payload)
    {
        if (!$payload || !isset($payload['user_id'])) {
            return null;
        }

        return DB::table('sys_user')
            ->where('id', $payload['user_id'])
            ->where('deleted', 0)
            ->first();
    }

    /**
     * 从 Request 获取用户信息
     * @param \Illuminate\Http\Request $request
     * @return object|null
     */
    public function getUserInfoFromRequest($request)
    {
        $payload = $request->attributes->get('payload');
        return $this->getUserInfoFromPayload($payload);
    }

    /**
     * 判断用户是否为管理员
     * @param array|null $payload
     * @return bool
     */
    public function isAdmin($payload)
    {
        if (!$payload || !isset($payload['roles'])) {
            return false;
        }

        // JWT payload 中已包含 roles，直接判断即可
        $roles = $payload['roles'];

        // 检查是否包含 admin 或 ADMIN
        return in_array('admin', $roles) || in_array('ADMIN', $roles);
    }

    /**
     * 从 Request 判断用户是否为管理员
     * @param \Illuminate\Http\Request $request
     * @return bool
     */
    public function isAdminFromRequest($request)
    {
        $payload = $request->attributes->get('payload');
        return $this->isAdmin($payload);
    }

    /**
     * 获取用户角色列表
     * @param int $userId
     * @return array
     */
    public function getUserRoles($userId)
    {
        return DB::table('sys_user_role')
            ->join('sys_role', 'sys_user_role.role_id', '=', 'sys_role.id')
            ->where('sys_user_role.user_id', $userId)
            ->pluck('sys_role.role_code')
            ->toArray();
    }
}