package user

import (
	"backend/usercenter/api/internal/svc"
	"backend/usercenter/api/internal/types"
	"context"
	"fmt"
	"regexp"
	"strings"

	"github.com/zeromicro/go-zero/core/logx"
	// github.com/spf13/cast // 类型转换
	// github.com/golang-module/carbon/v2 // 日期时间处理
	// github.com/jinzhu/copier/v2 // 结构体复制
	// orm 目录下的 orm 包
)

type UserLogoutLogic struct {
	logx.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

// 用户登出
func NewUserLogoutLogic(ctx context.Context, svcCtx *svc.ServiceContext) *UserLogoutLogic {
	return &UserLogoutLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *UserLogoutLogic) UserLogout(req *types.LogoutRequest) (resp *types.UsersResponse, err error) {
	// 获取请求头里的token
	// 从 context 中获取请求头里的 token
	token := l.ctx.Value("token").(string)
	fmt.Println(token)
	if token == "" {
		return &types.UsersResponse{
			Success: false,
			Message: "未获取到token",
			Data:    nil,
			Code:    200,
		}, nil
	}
	re := regexp.MustCompile(`(?i)^bearer\s*`)
	token = re.ReplaceAllString(strings.TrimSpace(token), "")
	fmt.Println(token)
	// 查找token是否存在
	exists, err := l.svcCtx.RedisClient.Exists(l.ctx, token).Result()
	if err != nil {
		return &types.UsersResponse{
			Success: false,
			Message: "登出失败",
			Data:    err.Error(),
			Code:    200,
		}, nil
	}
	if exists == 0 {
		return &types.UsersResponse{
			Success: false,
			Message: "token不存在",
			Data:    nil,
			Code:    200,
		}, nil
	}

	// 删除token
	err = l.svcCtx.RedisClient.Del(l.ctx, token).Err()
	if err != nil {
		return &types.UsersResponse{
			Success: false,
			Message: "登出失败",
			Data:    err.Error(),
			Code:    200,
		}, nil
	}

	return &types.UsersResponse{
		Success: true,
		Message: "登出成功",
		Data:    nil,
		Code:    200,
	}, nil
}