feat: allow password change

internal/db/db.go

@@ -572,6 +572,25 @@ func (d *Database) CheckCredentials(username, password string) (*model.User, err
 	}, nil
 }
 
+// UpdateUserPassword updates a user's password
+func (d *Database) UpdateUserPassword(userID int64, newPassword string) error {
+	// Hash the new password
+	hashedPassword, err := hashPassword(newPassword)
+	if err != nil {
+		return err
+	}
+
+	// Update the user's password
+	query := `
+		UPDATE users
+		SET password = ?
+		WHERE id = ?
+	`
+
+	_, err = d.db.Exec(query, hashedPassword, userID)
+	return err
+}
+
 // Helper function to hash password
 func hashPassword(password string) (string, error) {
 	// Use bcrypt for secure password hashing