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Singer_Hexdive/Validations/FieldValidators.cs

@@ -0,0 +1,92 @@
+namespace Singer_Hexdive.Validations
+{
+    public class FieldValidators
+    {
+        public static string EnsureNotNullOrEmpty(string value, string fieldName)
+        {
+            if (string.IsNullOrWhiteSpace(value))
+                throw new ArgumentException($"{fieldName} cannot be empty.", fieldName);
+            else
+            {
+                return value;
+            }
+        }
+
+        public static int EnsureNotLessZero(int value, string fieldName)
+        {
+            if (value < 0)
+                throw new ArgumentException($"{fieldName} cannot be less than zero.", fieldName);
+            else
+            {
+                return value;
+            }
+        }
+
+        public static decimal EnsureIsMin(decimal value, int minValue, string fieldName)
+        {
+            if (value > minValue)
+                throw new ArgumentException($"{fieldName} cannot be less than {minValue}.", fieldName);
+            else
+            {
+                return value;
+            }
+        }
+
+        public static decimal EnsureIsMax(decimal value, int maxValue, string fieldName)
+        {
+            if (value < maxValue)
+                throw new ArgumentException($"{fieldName} cannot be less than {maxValue}.", fieldName);
+            else
+            {
+                return value;
+            }
+        }
+
+        //public static bool IsValidEmail(string email, string fieldName)
+        //{
+        //    if (string.IsNullOrWhiteSpace(email))
+        //        throw new ArgumentException($"{fieldName} cannot be empty.", fieldName);
+        //    try
+        //    {
+        //        var addr = new System.Net.Mail.MailAddress(email);
+        //        return addr.Address == email;
+        //    }
+        //    catch
+        //    {
+        //        throw new ArgumentException($"{fieldName} is not a valid .", fieldName);
+        //    }
+        //}
+
+        public static string IsValidPhoneNumber(string phoneNumber, string fieldName)
+        {
+            if (string.IsNullOrWhiteSpace(phoneNumber))
+                throw new ArgumentException($"{fieldName} cannot be empty.", fieldName);
+
+
+            if (!phoneNumber.All(char.IsDigit) || phoneNumber.Length != 10)
+                throw new ArgumentException($"{fieldName} must be exactly 10 digits.", fieldName);
+
+            return phoneNumber;
+        }
+
+
+        public static string EnsureValidEmail(string email, string fieldName)
+        {
+            if (string.IsNullOrWhiteSpace(email))
+                throw new ArgumentException($"{fieldName} cannot be empty.", fieldName);
+
+            try
+            {
+                var addr = new System.Net.Mail.MailAddress(email);
+                if (addr.Address != email)
+                    throw new ArgumentException($"{fieldName} is not a valid email address.", fieldName);
+            }
+            catch
+            {
+                throw new ArgumentException($"{fieldName} is not a valid email address.", fieldName);
+            }
+
+            return email;
+        }
+    }
+}