package auth

import (
	"context"
	"fmt"

	"github.com/youruser/base/internal/svc"
	"github.com/youruser/base/internal/types"
	"github.com/youruser/base/internal/util/jwt"
	"github.com/youruser/base/model"

	"github.com/zeromicro/go-zero/core/logx"
)

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

// 刷新 Token
func NewRefreshTokenLogic(ctx context.Context, svcCtx *svc.ServiceContext) *RefreshTokenLogic {
	return &RefreshTokenLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *RefreshTokenLogic) RefreshToken(req *types.RefreshTokenRequest) (resp *types.LoginResponse, err error) {
	// 解析并验证 Token
	claims, err := jwt.ParseToken(req.Token)
	if err != nil {
		return &types.LoginResponse{
			Code:    401,
			Message: "Token无效或已过期",
			Success: false,
		}, nil
	}

	// 查询用户是否存在
	user, err := model.FindOne(l.ctx, l.svcCtx.DB, claims.UserID)
	if err != nil {
		if err == model.ErrNotFound {
			return &types.LoginResponse{
				Code:    404,
				Message: "用户不存在",
				Success: false,
			}, nil
		}
		return nil, fmt.Errorf("查询用户失败: %v", err)
	}

	// 生成新 Token
	newToken, err := jwt.GenerateToken(user.Id, user.Username, user.Role)
	if err != nil {
		return nil, fmt.Errorf("生成Token失败: %v", err)
	}

	l.Infof("刷新Token成功，userId=%d", user.Id)

	return &types.LoginResponse{
		Code:    200,
		Message: "刷新Token成功",
		Success: true,
		Token:   newToken,
	}, nil
}