feat: registering users if their email is not known

backend/main.go

@@ -333,6 +333,12 @@ func main() {
 			return
 		}
 
+		if exists := userModel.DoesUserExist(r.Context(), codeBody.Email); !exists {
+			userModel.Save(r.Context(), model.Users{
+				Email: codeBody.Email,
+			})
+		}
+
 		uuid, err := userModel.GetUserIdFromEmail(r.Context(), codeBody.Email)
 		if err != nil {
 			log.Println(err)

backend/models/user.go

@@ -10,6 +10,7 @@ import (
 	. "screenmark/screenmark/.gen/haystack/haystack/table"
 
 	. "github.com/go-jet/jet/v2/postgres"
+	"github.com/go-jet/jet/v2/qrm"
 	"github.com/google/uuid"
 )
 
@@ -115,6 +116,24 @@ func (m UserModel) GetUserIdFromEmail(ctx context.Context, email string) (uuid.U
 	return user.ID, err
 }
 
+func (m UserModel) DoesUserExist(ctx context.Context, email string) bool {
+	getUserIdStmt := Users.SELECT(Users.ID).WHERE(Users.Email.EQ(String(email)))
+
+	user := model.Users{}
+	err := getUserIdStmt.QueryContext(ctx, m.dbPool, &user)
+
+	return err != qrm.ErrNoRows
+}
+
+func (m UserModel) Save(ctx context.Context, user model.Users) (model.Users, error) {
+	insertUserStmt := Users.INSERT(Users.Email).VALUES(user.Email).RETURNING(Users.AllColumns)
+
+	insertedUser := model.Users{}
+	err := insertUserStmt.QueryContext(ctx, m.dbPool, &insertedUser)
+
+	return insertedUser, err
+}
+
 func NewUserModel(db *sql.DB) UserModel {
 	return UserModel{dbPool: db}
 }