updating rest-api

rest-api/utils/hash.go

@@ -6,3 +6,8 @@ func HashPassword(password string) (string, error) {
 	bytes, err := bcrypt.GenerateFromPassword([]byte(password), 14)
 	return string(bytes), err
 }
+
+func CheckPasswordHash(password, hashedPassword string) bool {
+	err := bcrypt.CompareHashAndPassword([]byte(hashedPassword), []byte(password))
+	return err == nil
+}

rest-api/utils/jwt.go

@@ -0,0 +1,53 @@
+package utils
+
+import (
+	"errors"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+)
+
+const secretKey = "supersecret"
+
+func GenerateToken(email string, userId int64) (string, error) {
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{
+		"email":  "",
+		"userId": "",
+		"exp":    time.Now().Add(time.Hour * 2).Unix(),
+	})
+
+	return token.SignedString([]byte(secretKey))
+}
+
+func VerifyToken(token string) (int64, error) {
+	parsedToken, err := jwt.Parse(token, func(token *jwt.Token) (interface{}, error) {
+		_, ok := token.Method.(*jwt.SigningMethodHMAC)
+
+		if !ok {
+			return nil, errors.New("Unexpected signing method")
+		}
+
+		return secretKey, nil
+	})
+
+	if err != nil {
+		return 0, errors.New("Could not parse token.")
+	}
+
+	tokenIsValid := parsedToken.Valid
+
+	if !tokenIsValid {
+		return 0, errors.New("Invalid token")
+	}
+
+	claims, ok := parsedToken.Claims.(jwt.MapClaims)
+
+	if !ok {
+		return 0, errors.New("Invalid token claims.")
+	}
+
+	// email := claims["email"].(string)
+	userId := int64(claims["userId"].(float64))
+
+	return userId, nil
+}