Validate Phone and Email when registering user

Trenser.FoodDeliveryApp/Trenser.FoodDeliveryApp/FoodDeliveryController.cpp

@@ -5,6 +5,8 @@ Date: 19-02-2026
 
 #include <stdexcept>
 #include <iomanip>
+#include <algorithm>
+#include <cctype>
 #include "FoodDeliveryController.h"
 #include "Menu.h"
 #include "RestaurantOwnerMenu.h"
@@ -234,6 +236,34 @@ static deliveryAssignments::iterator selectDeliveryAssignmentFromList(deliveryAs
 	return assignmentIterator;
 }
 
+
+bool isPhoneNumberValid(const std::string& phoneNumber) {
+	if (phoneNumber.size() != 10)
+	{
+		return false;
+	}
+	return std::all_of(phoneNumber.begin(), phoneNumber.end(),
+		[](char character) 
+		{
+			return std::isdigit(character);
+		}
+	);
+}
+
+bool isEmailValid(const std::string& email) {
+	int index = email.find('@');
+	if (index == std::string::npos) return false;
+	if (email.find('@', index + 1) != std::string::npos)
+	{
+		return false;
+	}
+	if (index == 0 || index == email.size() - 1)
+	{
+		return false;
+	}
+	return true;
+}
+
 void FoodDeliveryController::loadStates()
 {
 	FileDatabase<User> userDatabase(USERS_FILE);
@@ -506,8 +536,18 @@ void FoodDeliveryController::registerUser()
 		util::readString(name);
 		std::cout << "Enter Phone: ";
 		util::readString(phone);
+		if (!isPhoneNumberValid(phone))
+		{
+			std::cout << "Phone Number is Invalid. Cannot Register User!\n";
+			return;
+		}
 		std::cout << "Enter Email: ";
 		util::readString(email);
+		if (!isEmailValid(email))
+		{
+			std::cout << "Email ID is Invalid. Cannot Register User!\n";
+			return;
+		}
 		std::cout << "Enter Address: ";
 		util::readString(address);
 		while (true)

Trenser.FoodDeliveryApp/Trenser.FoodDeliveryApp/User.txt

@@ -1,9 +1,9 @@
-1|alex|Alex Miller|100000001|alex|alex@mail.com|CityOne|RestaurantOwner
+1|alex|Alex Miller|1000000010|alex|alex@mail.com|CityOne|RestaurantOwner
-2|jordan|Jordan Smith|100000002|jordan|jordan@mail.com|CityTwo|RestaurantOwner
+2|jordan|Jordan Smith|1000000020|jordan|jordan@mail.com|CityTwo|RestaurantOwner
-3|taylor|Taylor Brown|100000003|taylor|taylor@mail.com|CityThree|RestaurantOwner
+3|taylor|Taylor Brown|1000000030|taylor|taylor@mail.com|CityThree|RestaurantOwner
-4|emma|Emma Wilson|100000004|emma|emma@mail.com|CityOne|Customer
+4|emma|Emma Wilson|1000000040|emma|emma@mail.com|CityOne|Customer
-5|liam|Liam Johnson|100000005|liam|liam@mail.com|CityTwo|Customer
+5|liam|Liam Johnson|1000000050|liam|liam@mail.com|CityTwo|Customer
-6|olivia|Olivia Davis|100000006|olivia|olivia@mail.com|CityThree|Customer
+6|olivia|Olivia Davis|1000000060|olivia|olivia@mail.com|CityThree|Customer
-7|noah|Noah Anderson|100000007|noah|noah@mail.com|CityOne|DeliveryPartner
+7|noah|Noah Anderson|1000000070|noah|noah@mail.com|CityOne|DeliveryPartner
-8|ava|Ava Martinez|100000008|ava|ava@mail.com|CityTwo|DeliveryPartner
+8|ava|Ava Martinez|1000000080|ava|ava@mail.com|CityTwo|DeliveryPartner
-9|ethan|Ethan Thomas|100000009|ethan|ethan@mail.com|CityThree|DeliveryPartner
+9|ethan|Ethan Thomas|1000000090|ethan|ethan@mail.com|CityThree|DeliveryPartner