refactor: use https://github.com/thanhpk/randstr

go.mod

@@ -4,9 +4,12 @@ go 1.21
 
 require (
 	github.com/99designs/gqlgen v0.17.44
+	github.com/cloudinary/cloudinary-go/v2 v2.7.0
 	github.com/go-chi/chi/v5 v5.0.12
 	github.com/go-jet/jet/v2 v2.11.0
 	github.com/ory/dockertest/v3 v3.10.0
+	github.com/sendgrid/rest v2.6.9+incompatible
+	github.com/sendgrid/sendgrid-go v3.14.0+incompatible
 	github.com/vektah/gqlparser/v2 v2.5.11
 	golang.org/x/crypto v0.21.0
 )
@@ -18,7 +21,6 @@ require (
 	github.com/Microsoft/go-winio v0.6.1 // indirect
 	github.com/Nvveen/Gotty v0.0.0-20120604004816-cd527374f1e5 // indirect
 	github.com/cenkalti/backoff/v4 v4.2.1 // indirect
-	github.com/cloudinary/cloudinary-go/v2 v2.7.0 // indirect
 	github.com/containerd/continuity v0.4.3 // indirect
 	github.com/creasty/defaults v1.5.1 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
@@ -59,10 +61,9 @@ require (
 	github.com/opencontainers/runc v1.1.12 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/sendgrid/rest v2.6.9+incompatible // indirect
-	github.com/sendgrid/sendgrid-go v3.14.0+incompatible // indirect
 	github.com/sirupsen/logrus v1.9.3 // indirect
 	github.com/stretchr/testify v1.8.4 // indirect
+	github.com/thanhpk/randstr v1.0.6 // indirect
 	github.com/xeipuuv/gojsonpointer v0.0.0-20190905194746-02993c407bfb // indirect
 	github.com/xeipuuv/gojsonreference v0.0.0-20180127040603-bd5ef7bd5415 // indirect
 	github.com/xeipuuv/gojsonschema v1.2.0 // indirect
@@ -94,7 +95,7 @@ require (
 	github.com/go-playground/validator/v10 v10.18.0
 	github.com/gohugoio/hugo v0.111.3 // indirect
 	github.com/golang-jwt/jwt v3.2.2+incompatible
-	github.com/google/uuid v1.6.0 // indirect
+	github.com/google/uuid v1.6.0
 	github.com/lib/pq v1.10.9
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect

go.sum

@@ -402,6 +402,8 @@ github.com/tdewolff/parse/v2 v2.6.5 h1:lYvWBk55GkqKl0JJenGpmrgu/cPHQQ6/Mm1hBGswo
 github.com/tdewolff/parse/v2 v2.6.5/go.mod h1:woz0cgbLwFdtbjJu8PIKxhW05KplTFQkOdX78o+Jgrs=
 github.com/tdewolff/test v1.0.7 h1:8Vs0142DmPFW/bQeHRP3MV19m1gvndjUb1sn8yy74LM=
 github.com/tdewolff/test v1.0.7/go.mod h1:6DAvZliBAAnD7rhVgwaM7DE5/d9NMOAJ09SqYqeK4QE=
+github.com/thanhpk/randstr v1.0.6 h1:psAOktJFD4vV9NEVb3qkhRSMvYh4ORRaj1+w/hn4B+o=
+github.com/thanhpk/randstr v1.0.6/go.mod h1:M/H2P1eNLZzlDwAzpkkkUvoyNNMbzRGhESZuEQk3r0U=
 github.com/urfave/cli v1.22.12 h1:igJgVw1JdKH+trcLWLeLwZjU9fEfPesQ+9/e4MQ44S8=
 github.com/urfave/cli v1.22.12/go.mod h1:sSBEIC79qR6OvcmsD4U3KABeOTxDqQtdDnaFuUN30b8=
 github.com/urfave/cli/v2 v2.27.1 h1:8xSQ6szndafKVRmfyeUMxkNUJQMjL1F2zmsZ+qHpfho=

services/user_service.go

@@ -12,6 +12,7 @@ import (
 	"github.com/stadio-app/stadio-backend/graph/gmodel"
 	"github.com/stadio-app/stadio-backend/types"
 	"github.com/stadio-app/stadio-backend/utils"
+	"github.com/thanhpk/randstr"
 	"golang.org/x/crypto/bcrypt"
 	"google.golang.org/api/googleapi"
 	"google.golang.org/api/oauth2/v2"
@@ -236,10 +237,7 @@ func (service Service) CreateAuthState(ctx context.Context, user gmodel.User, au
 }
 
 func (service Service) CreateEmailVerification(ctx context.Context, user gmodel.User) (model.EmailVerification, error) {
-	code, code_err := utils.GenerateRandomUrlEncodedString(EMAIL_VERIFICATION_CODE_LEN)
-	if code_err != nil {
-		return model.EmailVerification{}, code_err
-	}
+	code := randstr.String(EMAIL_VERIFICATION_CODE_LEN)
 
 	query := table.EmailVerification.INSERT(
 		table.EmailVerification.UserID,

utils/strings.go

@@ -1,16 +1 @@
 package utils
-
-import (
-	"crypto/rand"
-	"encoding/base64"
-)
-
-// Generate random string URL encoded
-func GenerateRandomUrlEncodedString(length int) (string, error) {
-	buffer := make([]byte, length)
-	_, err := rand.Read(buffer)
-	if err != nil {
-		return "", err
-	}
-	return base64.URLEncoding.EncodeToString(buffer)[:length], nil
-}