init

internal/server/helpers/helpers.go

@@ -0,0 +1,63 @@
+package helpers
+
+import (
+	"errors"
+	"github.com/golang-jwt/jwt/v5"
+	"golang.org/x/crypto/bcrypt"
+	"time"
+)
+
+var secretKey = []byte("1234567890")
+
+type TokenClaims struct {
+	UserId  uint32 `json:"user_id"`
+	Role    string `json:"role"`
+	Expires int64  `json:"expires"`
+	jwt.RegisteredClaims
+}
+
+func CreateToken(userId uint32, role string, expires time.Time) (string, error) {
+	claims := TokenClaims{
+		UserId:  userId,
+		Role:    role,
+		Expires: expires.Unix(),
+		RegisteredClaims: jwt.RegisteredClaims{
+			ExpiresAt: jwt.NewNumericDate(expires),
+			Issuer:    "https://madsky.ru",
+		},
+	}
+
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	ss, err := token.SignedString(secretKey)
+	if err != nil {
+		return "", err
+	}
+
+	return ss, nil
+}
+
+func VerifyToken(tokenString string) (*TokenClaims, error) {
+	token, err := jwt.ParseWithClaims(tokenString, &TokenClaims{}, func(token *jwt.Token) (interface{}, error) {
+		return secretKey, nil
+	})
+
+	if err != nil {
+		return nil, err
+	} else if claims, ok := token.Claims.(*TokenClaims); ok && token.Valid {
+		return claims, nil
+	} else {
+		return nil, errors.New("unknown claims type, cannot proceed")
+	}
+
+}
+
+func CreateHashString(password string) (string, error) {
+	cost := bcrypt.DefaultCost
+	bytes, err := bcrypt.GenerateFromPassword([]byte(password), cost)
+	return string(bytes), err
+}
+
+func VerifyHashString(password, hash string) bool {
+	err := bcrypt.CompareHashAndPassword([]byte(hash), []byte(password))
+	return err == nil
+}