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service.go
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service.go
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package sso
import (
"errors"
"fmt"
"github.com/viant/dsc"
"github.com/viant/toolbox"
"golang.org/x/crypto/bcrypt"
"net/http"
"strings"
"sync"
)
// Service represents sso service
type Service interface {
SignUp(*SignUpRequest, *http.Request) *SignUpResponse
SignIn(*SignInRequest) *SignInResponse
}
type service struct {
config *Config
manager dsc.Manager
mutex *sync.Mutex
dsManager dsc.Manager
}
func setResponseError(response *BaseResponse, errorSource, message string) {
response.Status = "error"
response.ErrorSource = errorSource
response.Error = message
}
func (s *service) getUser(email string) (*User, error) {
var user = &User{}
success, err := s.dsManager.ReadSingle(user, "SELECT email, name, hashedPassword, dateOfBirth FROM users WHERE email = ?", []interface{}{email}, nil)
if err != nil {
return nil, err
}
if success {
return user, nil
}
return nil, nil
}
func (s *service) persistUser(user *User) error {
_, _, err := s.dsManager.PersistSingle(user, "users", nil)
return err
}
func (s *service) isIPEligible(httpRequest *http.Request) (bool, error) {
IP := extractIp(httpRequest)
var URL = fmt.Sprintf(s.config.IPLookupURL, IP)
var response = &IpInfo{}
err := toolbox.RouteToService("get", URL, nil, response)
if err != nil {
return false, err
}
return response.CountryCode == "" || strings.ToUpper(response.CountryCode) == "US", nil
}
func (s *service) SignUp(request *SignUpRequest, httpRequest *http.Request) *SignUpResponse {
response := &SignUpResponse{
BaseResponse: &BaseResponse{
Status: "ok",
},
}
ipEligible, err := s.isIPEligible(httpRequest)
if err != nil {
setResponseError(response.BaseResponse, "system", fmt.Sprintf("%v", err))
return response
}
if !ipEligible {
setResponseError(response.BaseResponse, "system", "registration from outside of US is no supported")
return response
}
errorSource, err := request.Validate()
if err != nil {
setResponseError(response.BaseResponse, errorSource, fmt.Sprintf("%v", err))
return response
}
if user, err := s.getUser(request.Email); user != nil || err != nil {
if err != nil {
setResponseError(response.BaseResponse, "system", fmt.Sprintf("unable to check user store: %v", err))
return response
}
setResponseError(response.BaseResponse, "email", fmt.Sprintf("email %v has been already registered", request.Email))
return response
}
user := request.User
hashedPassword, err := bcrypt.GenerateFromPassword([]byte(request.Password), 14)
if err != nil {
setResponseError(response.BaseResponse, "system", fmt.Sprintf("unable to hash user password: %v", err))
return response
}
user.HashedPassword = string(hashedPassword)
user.DateOfBirth, err = toolbox.ToTime(request.DataOfBirth, toolbox.DateFormatToLayout("yyyy-MM-dd"))
if err != nil {
setResponseError(response.BaseResponse, "dataOfBirth", fmt.Sprintf("%v: %v", request.DataOfBirth, err))
return response
}
err = s.persistUser(user)
if err != nil {
setResponseError(response.BaseResponse, "system", fmt.Sprintf("unable persist user %v, %v", user.Email, err))
return response
}
response.User = user
response.LandingPage = request.LandingPage
return response
}
func (s service) SignIn(request *SignInRequest) *SignInResponse {
var response = &SignInResponse{
BaseResponse: &BaseResponse{
Status: "ok",
},
}
user, err := s.getUser(request.Email)
if err != nil {
setResponseError(response.BaseResponse, "system", fmt.Sprintf("unable to get user %v", err))
return response
}
if user == nil || bcrypt.CompareHashAndPassword([]byte(user.HashedPassword), []byte(request.Password)) != nil {
setResponseError(response.BaseResponse, "email", "unable to find a user for provided credentials")
return response
}
response.User = user
response.LandingPage = request.LandingPage
return response
}
// NewService creates a new SSO service.
func NewService(config *Config) (Service, error) {
if config.DsConfig == nil {
return nil, errors.New("DsConfig was empty")
}
manager, err := dsc.NewManagerFactory().Create(config.DsConfig)
if err != nil {
return nil, err
}
return &service{
dsManager: manager,
config: config,
mutex: &sync.Mutex{},
}, nil
}