<?php
namespace app\index\controller;

use think\Controller;
use app\index\model\Users;
use think\facade\Redirect;
use \think\facade\Log;
use \think\facade\Cache;
use PHPMailer\PHPMailer\PHPMailer;
use think\Response;

class UserController extends BaseController
{
    /**
     * 用户登录
     *
     * @return \think\Response
     */
    public function login()
    {
        if ($this->request->isPost()) {
            $data = $this->request->post();

            try {
                // 验证数据
                $validate = validate([
                    'account' => 'require|email',
                    'password' => 'require'
                ]);

                if (!$validate->check($data)) {
                    return json(['code' => 1, 'msg' => $validate->getError()]);
                }

                // 查询用户
                $user = Users::where('account', $data['account'])->find();
                if (!$user) {
                    return json(['code' => 1, 'msg' => '用户不存在']);
                }

                // 验证密码
                if ($user->password !== md5($data['password'])) {
                    return json(['code' => 1, 'msg' => '密码错误']);
                }

                // 登录成功，设置session
                session('user_id', $user->id);
                session('user_name', $user->name);
                session('user_avatar', $user->avatar ?? '/static/images/avatar.png');

                // 记录登录日志
                Log::record('用户登录成功：' . $user->account, 'info');

                return json(['code' => 0, 'msg' => '登录成功']);

            } catch (\Exception $e) {
                return json(['code' => 1, 'msg' => '登录失败：' . $e->getMessage()]);
            }
        }

        return view('login');
    }

    /**
     * 用户注册
     *
     * @return \think\Response
     */
    public function register()
    {
        if ($this->request->isPost()) {
            $data = $this->request->post();

            try {
                // 验证数据
                $validate = validate([
                    'account' => 'require|email|unique:users',
                    'code' => 'require|number|length:6',
                    'password' => 'require|min:6|max:20',
                    'repassword' => 'require|confirm:password'
                ], [
                    'account.require' => '账户不能为空',
                    'account.email' => '邮箱格式不正确',
                    'account.unique' => '该邮箱已注册',
                    'code.require' => '验证码不能为空',
                    'code.number' => '验证码必须为数字',
                    'code.length' => '验证码长度必须为6位',
                    'password.require' => '密码不能为空',
                    'password.min' => '密码长度不能小于6个字符',
                    'password.max' => '密码长度不能超过20个字符',
                    'repassword.require' => '确认密码不能为空',
                    'repassword.confirm' => '两次输入的密码不一致'
                ]);

                if (!$validate->check($data)) {
                    return json(['code' => 1, 'msg' => $validate->getError()]);
                }

                // 验证邮箱验证码
                $emailCode = cache('email_code_' . $data['account']);
                if (!$emailCode || $emailCode != $data['code']) {
                    return json(['code' => 1, 'msg' => '验证码错误或已过期']);
                }

                // 创建用户
                $user = new Users;
                $user->account = $data['account'];
                $user->password = md5($data['password']);
                $user->name = $this->generateRandomName();
                $user->create_time = time();
                $user->save();

                // 清除验证码缓存
                cache('email_code_' . $data['account'], null);

                return json(['code' => 0, 'msg' => '注册成功']);

            } catch (\Exception $e) {
                return json(['code' => 1, 'msg' => '注册失败：' . $e->getMessage()]);
            }
        }

        return view('register');
    }

    /**
     * 退出登录
     *
     * @return \think\Response
     */
    public function logout()
    {
        // 增加日志记录，记录用户退出登录操作
        Log::record('用户退出登录', 'info');

        // 销毁当前会话中的所有数据
        session(null);

        // 清除缓存中的用户信息
        Cache::tag('user_cache')->clear();

        // 清除cookie
        cookie('user_id', null);
        cookie('user_name', null);
        cookie('user_avatar', null);
        cookie('expire_time', null);
        cookie('is_auto_login', null);
        cookie('auto_login_attempted', null);

        // 返回成功状态
        return json(['code' => 0, 'msg' => '退出成功']);
    }

    // 生成随机用户名
    private function generateRandomName()
    {
        return '云朵_' . mt_rand(100000, 999999);
    }

    // 发送短信验证码
    public function sendSmsCode()
    {
        if ($this->request->isPost()) {
            $phone = $this->request->post('phone');

            // 验证手机号
            $validate = validate([
                'phone' => 'require|mobile|unique:user'
            ], [
                'phone.require' => '手机号不能为空',
                'phone.mobile' => '手机号格式不正确',
                'phone.unique' => '该手机号已注册'
            ]);

            if (!$validate->check(['phone' => $phone])) {
                return json(['code' => 0, 'msg' => $validate->getError()]);
            }

            // 生成6位随机验证码
            $code = mt_rand(100000, 999999);

            // 这里应该调用短信服务商API发送验证码
            // 示例代码，实际使用时需要替换为真实的短信发送逻辑
            try {
                // TODO: 调用短信服务商API发送验证码
                // $result = sendSms($phone, $code);

                // 将验证码保存到缓存，有效期5分钟
                cache('sms_code_' . $phone, $code, 300);

                return json(['code' => 1, 'msg' => '验证码发送成功']);
            } catch (\Exception $e) {
                return json(['code' => 0, 'msg' => '验证码发送失败：' . $e->getMessage()]);
            }
        }

        return json(['code' => 0, 'msg' => '非法请求']);
    }

    // 微信授权回调
    public function wechatCallback()
    {
        $code = $this->request->get('code');
        if (!$code) {
            return json(['code' => 0, 'msg' => '微信授权失败']);
        }

        try {
            // 这里应该调用微信API获取用户信息
            // 示例代码，实际使用时需要替换为真实的微信API调用逻辑
            // $wechatUser = getWechatUserInfo($code);

            // 模拟获取到的微信用户信息
            $wechatUser = [
                'openid' => 'test_openid_' . time(),
                'nickname' => '微信用户',
                'avatar' => ''
            ];

            // 检查用户是否已注册
            $user = Users::where('openid', $wechatUser['openid'])->find();
            if ($user) {
                // 已注册，直接登录
                session('user_id', $user->id);
                return json(['code' => 1, 'msg' => '登录成功']);
            }

            // 未注册，返回注册所需信息
            return json([
                'code' => 2,
                'msg' => '需要注册',
                'data' => $wechatUser
            ]);
        } catch (\Exception $e) {
            return json(['code' => 0, 'msg' => '微信授权失败：' . $e->getMessage()]);
        }
    }

    // 发送邮箱验证码
    public function sendEmailCode()
    {
        // 设置响应头
        header('Content-Type: application/json; charset=utf-8');

        if (!$this->request->isPost()) {
            return json(['code' => 1, 'msg' => '请求方法无效']);
        }

        $email = $this->request->post('account');
        if (empty($email)) {
            return json(['code' => 1, 'msg' => '邮箱不能为空']);
        }

        // 验证邮箱格式
        if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
            return json(['code' => 1, 'msg' => '邮箱格式不正确']);
        }

        // 检查邮箱是否已注册
        $exists = Users::where('account', $email)->find();
        if ($exists) {
            return json(['code' => 1, 'msg' => '该邮箱已注册']);
        }

        // 生成6位随机验证码
        $code = mt_rand(100000, 999999);

        // 发送验证码邮件
        $result = parent::sendEmail($email, "您的注册验证码是：{$code}，有效期为5分钟。", '注册验证码');

        if ($result === '发送成功') {  // 修改这里的判断条件
            // 将验证码存入缓存，有效期5分钟
            cache('email_code_' . $email, $code, 300);
            return json(['code' => 0, 'msg' => '验证码已发送']);
        } else {
            return json(['code' => 1, 'msg' => '发送失败：' . $result]);
        }
    }
}