UIImp.cpp

#include "Ui.h"
#include "Date.h"
#include "Order.h"
#include <iostream>
#include <string>

UI::UI()
{
	// invlist.load stocks into inventory
}

UI::~UI()
{
	// write stocks from inventory into file
}

void UI::mainMenu()
{ 
	bool continueUi = true;
	do
	{
		int option;
		string customername, customeremail, customerID;
		bool emailCheck,remCustomerCheck;
		CustomerType *tempCustomer;
		bool verifyInput = false;
		cout << string(3, '\n');

		do
		{
			if (verifyInput)
			{
				// This locks up if cin has never been used. Skip on first iteration
				cin.clear();
				cin.ignore(numeric_limits<streamsize>::max(), '\n');
			}
			cout << "Main Menu \n\n1) Add customer \n2) Remove coustomer \n3) Find customer" <<
				"\n4) List customer information \n5) Order menu \n6) Inventory menu \n7) Exit" << endl;
			cin >> option;

			// Set to verify cin after first read
			verifyInput = true;

			if (!cin)
			{
				cout << endl;
				cout << "Invalid option entered. Please try again." << endl;
				cout << endl;
			}

		} while (!cin);
		
		switch (option)
		{
		case 1:		// add customer
			do
			{
				// Need to get potential new customerID
				cout << "Enter Customer ID: ";
				cin >> customerID;
				// after reading in customerID - see if it already exists
				if (totalCustomers.findCustomer(customerID))
				{
					// if it already exists, warn user and go back to customer menu
					cout << endl << "Custeromer ID already exists.\nPlease Re-";
				}
			} while (totalCustomers.findCustomer(customerID));

			// collect rest of customer information

			cout << "Enter customer name: ";
			// names are notorious for having spaces in them - must use getline
			cin.ignore();
			getline(cin, customername);
			do
			{
				// Need to get potential new customeremail
				cout << "Enter customer email: ";
				cin.clear();
				cin >> customeremail;
				// After reading in customeremail - check if it is valid

				// Establish a general email pattern
				// regex emailMatch("^[_a-z0-9-]+(\\.[_a-z0-9-]+)*@[a-z0-9-]+(\\.[a-z0-9-]+)*(\\.[a-z]{2,4})$");
				// Check the input for the regex pattern
				// if (regex_match(customeremail, emailMatch))

				int i = customeremail.find('@', 1);
				if (//customeremail.find('@', 1) == true && // this line produced a Warning
					customeremail.find('@', 1) != string::npos && // If no matches were found, the function returns string::npos.
					customeremail.find('.', i + 1) != string::npos &&
					customeremail.back() != '.') //Making sure there is an "@" and a "." afterwards. Characters must follow.
				{
					emailCheck = false;
				}
				else
				{
					cout << "ERROR: Incorrect email address entered. \nPlease Re-";
					emailCheck = true;
				}
			} while (emailCheck);
			// build customer and add to customer
			// customerlist.addCustomer(Customer(----,-----,-----));
			tempCustomer = new CustomerType(customerID, customername, customeremail);
			totalCustomers.addCustomer(*tempCustomer);
			break;
		case 2:		// remove customer
					// you may want to display list of customerIDs so user can choose one
			cout << "Current customers:" << endl;
			cout << totalCustomers << endl;
			do
			{
				cout << "Enter customer ID you want to delete: ";
				cin >> customerID;
				if (totalCustomers.findCustomer(customerID)) {
					remCustomerCheck = false;
					totalCustomers.removeCustomer(totalCustomers.getCustomer(customerID));
				}
				else
				{
					cout << "ERROR: Invalid customer ID entered. \nPlease Re-";
					remCustomerCheck = true;
				}
			} while (remCustomerCheck);
			// find customer object in customerlist returning iterator pointing to the customer object
			// if found
			//		use customer list remove method passing iterator
			// else
			//		message to user not found

			break;
		case 3:		// find customer returning iterator pointing to the customer
					// you may want to display list of customerIDs so user can choose one
			cout << "enter customer ID" << endl;
			cin >> customerID;
			// CustomerType& cust = custlist.getcustomer(customerID)
			break;
		case 4: // list customer information
			cout << "Current customers:" << endl;
			cout << totalCustomers << endl;
			break;
		case 5:  //order menu
			orderMenu();
			break;
		case 6: //inv menu
			invMenu();
			break;
		case 7: //exit
			continueUi = false;
			break;
		default:
			cout << "Invalid option try again";
			break;
		}
	} while (continueUi);
}

void UI::orderMenu()
{
	int option;
	string custID;
	bool notValidCustomer;
	Order *tempOrder;
	bool stayInMenu = true;
	
	do
	{
		do
		{
			cin.clear();
			cin.ignore(numeric_limits<streamsize>::max(), '\n');
			cout << "Order Menu" <<
				"\n1) List Orders for Customer \n2) Over all orders for all customers \n3) Add order to customer" <<
				"\n4) Cancel order for a customer \n5) Update order for a customer \n6) Go Back \n";
			cin >> option;

			if (!cin)
			{
				cout << endl;
				cout << "Invalid option entered. Please try again." << endl;
				cout << endl;
			}

		} while (!cin);
		

		switch (option)
		{
		case 1:     // list orders for a customer
			cout << "Current customers:" << endl;
			cout << totalCustomers << endl;//customerListprint;
			do
			{
				cout << "Enter customer ID: ";
				cin >> custID;
				if (totalCustomers.findCustomer(custID)) { // iterator = find customer
					notValidCustomer = false;
					cout << totalCustomers.getOrders(totalCustomers.getCustomer(custID)) << endl;
				}
				else {
					notValidCustomer = true;
					cout << "ERROR: Invalid customer ID entered. \nPlease Re-";
				}
			} while (notValidCustomer);
			break;

		case 2:     // list all orders for all customers
			// use for range loop to retrieve each customer
			for (CustomerType customer : totalCustomers)
			{
				// for current customer invoke printOrders() method
				cout << customer.printOrders();
			}

			break;

		case 3:		// add an order for a customer
			//customerListprint;
			cout << "Current customers:" << endl;
			cout << totalCustomers << endl;
			do
			{
				cout << "Enter customer ID: ";
				cin >> custID;
				if (totalCustomers.findCustomer(custID)) { // iterator = find customer
					notValidCustomer = false;
					tempOrder = new Order();
					addOrderData(*tempOrder);
					totalCustomers.addOrder(totalCustomers.getCustomer(custID), *tempOrder);// - Get oder to pass in
				}
				else {
					notValidCustomer = true;
					cout << "ERROR: Invalid customer ID entered. \nPlease Re-";
				}
			} while (notValidCustomer);
			break;

		case 4:		// cancel order
			//customerListprint;

			cout << "Current customers:" << endl;
			cout << totalCustomers << endl;
			do
			{
				cout << "Enter customer ID: ";
				cin >> custID;
				if (totalCustomers.findCustomer(custID)) { // iterator = find customer
					notValidCustomer = false;
					CustomerType customer = totalCustomers.getCustomer(custID);
					cout << "Orders for customer " << customer.getId() << " : "<< customer.getName() << endl;
					cout << customer.printOrders() << endl;
					bool invalidOrder = true;
					string orderID;
					do
					{
						cout << "Enter order number to cancel: ";
						cin >> orderID;
						if (customer.findOrder(orderID))
						{
							invalidOrder = false;
							customer.removeOrder(orderID);
							cout << "Order " << orderID << " removed from customers order list." << endl;
						}
						else
						{
							invalidOrder = true;
							cout << "ERROR: Invalid order ID entered." << endl;
							cout << "Please Re-";
						}

					} while (invalidOrder);
				}
				else {
					notValidCustomer = true;
					cout << "ERROR: Invalid customer ID entered. \nPlease Re-";
				}
			} while (notValidCustomer);
			break;

		case 5:			// update order
						//	updateOrderMenu()
			break;
		case 6:
			stayInMenu = false;
			break;
		default:
			cout << "Invalid Option \"" << option << "\"" << endl;
			break;
		}

	} while (stayInMenu);
}

void UI::invMenu()
{
	int option, custID;
	bool stayInMenu = true;
	do
	{
		do
		{
			cin.clear();
			cin.ignore(numeric_limits<streamsize>::max(), '\n');
			cout << endl << "Inventory Menu" << endl;
			cout << "1) List all items in inventory" << endl;
			cout << "2) Display an item in inventory" << endl;
			cout << "3) Process order from supplier" << endl;
			cout << "4) Generate orders to the suppliers for a given month" << endl;
			cout << "5) Find the high demand items for a period of time - month, qtr, yr" << endl;
			cout << "6) Exit" << endl;
			cin >> option;

			if (!cin)
			{
				cout << endl;
				cout << "Invalid option entered. Please try again." << endl;
				cout << endl;
			}

		} while (!cin);

		switch (option)
		{
		case 1:     // list all items in inventory
		{
			// totalInventory.print();
			break;
		}
		case 2:     // display an item in inventory
		{
			bool invalidItem;
			string itemID;
			do
			{
				cin.clear();
				cin.ignore(numeric_limits<streamsize>::max(), '\n');

				//	ask user for itemid
				cout << "Enter the id of the item you would to display: ";
				cin >> itemID;
				if (totalInventory.itemExists(itemID))
				{
					invalidItem = false;
					Stock& itemStock = totalInventory.findItem(itemID);
					// cout << itemStock << endl;							// Can't print item information yet.
				}
				else
				{
					invalidItem = true;
					cout << "ERROR: Invalid item ID entered." << endl;
					cout << "Please Re-";
				}
			} while (!invalidItem);
			break;
		}
		case 3:		//process an order from a supplier
		{
			bool cancelOpenFile = false;
			ofstream orderFile;
			do
			{
				cin.clear();
				cin.ignore(numeric_limits<streamsize>::max(), '\n');

				string fileName;
				// prompt user for filename of order from a supplier
				cout << "Enter the name of the order file (or EXIT to go back): ";
				cin >> fileName;
				stringstream exitCheck;
				for (char c : fileName)
					exitCheck << toupper(c);

				// Exit open file
				if (exitCheck.str() == "EXIT")
				{
					cancelOpenFile = true;
					break;
				}

				// establish an input file using filename from user
				orderFile.open(fileName);		// or maybe have a directory for it: orderFile.open($ordersDirectoryNameVariable + "\\" + fileName );

				// check if file was unable to open
				if (orderFile.fail())
				{
					cout << "File not found. Please Re-";
				}
			} while (orderFile.fail());

			// if user wants to EXIT...
			if (cancelOpenFile)
			{
				orderFile.close();
				break;
			}

			/* FILE ASSUMPTIONS 
			[customer id]
			[order id]
			[item id] [quantitiy]
			[item id] [quantitiy]
			...
			*/

			//		while more records
			//			read new item information - itemid, qty
			//			Stock& stk = invlist.findItem(itemid)
			//			if stk not emptystock
			//				stk.incrementQuantity(qty)
			//			else
			//				error message
			//			endif
			//		end while
			// close file
			orderFile.close();

			break;
		}
		case 4:		// Generate orders to the suppliers for a given month
		{
			//		get month and year for order header
			//		vector<SupplierItem> supplist;
			//		for each stock in invlist
			//			if stock.getInStock() < stock.getReorderPoint()
			//				supplist.push_back(SupplierItem(stock.getSupplierID(),
			//						stock.getID(), stock.reorderAmount())
			//			endif
			//		next
			//		supplist.sort
			//		generate report with breaks at supplierID change
			break;			
		}
		case 5:		//Find the high demand items for a period of time - month, qtr, yr
		{
			//		vector<pair<string, int>> usage;
			//		get startdate and enddate
			//		for each cust in custlist
			//			for each ord in cust.ordlist
			//				verify that orderdate is between startdate and enddate
			//				if so,
			//					for each orditem in orditemlist
			//						string itdata = orditem.getItemID()
			//						auto& itemiter = find(usage.begin(), usage.end(), 
			//							[itdata](pair<string, int> listel)
			//								{return (listel.first() == itdata); }
			//						if itemiter != usage.end() 
			//							itemiter->second += orditem.getQuant();
			//						else
			//							usage.push_back(make_pair(orditem.getItemID(), orditem.getQuant())
			//						endif
			//					next
			//				endif
			//			next
			//		next
			break;
		}
		case 6:
		{
			stayInMenu = false;
			break;
		}
		default:
		{
			cout << "Invalid Option \"" << option << "\"" << endl;
			break;
		}
		}
	} while (stayInMenu);
}

void UI::addOrderData(Order &newOrder)
{
	string ordId, ordDateString, delDateString, itemID, option;
	Date ordDate,delDate;
	int quantity;
	bool moreItems = true;
	orderItem *tempItem;
	cout << "\nEnter Order Id: ";
	// Validate Order ID here ???
	// It would not hurt to...
	cin >> ordId;
	cout << "\nEnter Order Date Ex: 1/1/1990: ";
	cin >> ordDateString;
	ordDate = { ordDateString };
	cout << "\nEnter Delivery Date Ex: 1/1/1990: ";
	cin >> delDateString;
	delDate = { delDateString };
	Order tempOrder(ordId, ordDate, delDate);
	
	do
	{
		cout << "\nEnter Item Id: ";
		cin >> itemID;
		cout << "\nEnter quantity: ";
		cin >> quantity;
		tempItem = new orderItem(itemID, quantity);
		tempOrder.addOrderItem(*tempItem);
		cout << "\nEnter 'Finish' to finish adding items otherwise any charter to continue entering items: ";
		cin >> option;
		std::transform(option.begin(), option.end(), option.begin(), ::toupper);
		if (option == "FINISH")
			moreItems = false;
	} while (moreItems);
	newOrder = tempOrder;
}

//void UI::custMenu(int ID)
//{
//	string itemID, qnty;
//	Listinvertory;
//	cin >> itemID
//	if ()
//	{
//
//	}
//}

// addOrderData routine
//void UI::addOrderData(CustomerType& cust)
//      collect orderid, orderdate, deliverydate
//		create order object
//		while more orderitems
//			collect orderitem data - itemid, quantity
//			orderitem reference = ord.findOrderItem(itemid)
//			if orderitem refence != emptyorderitem,
//				orderitem reference.incrementQuantity(quantity)
//			else
//				orderitem neworditem = invlist.checkIfInStock(itemid, quantity)
//				ord.addOrderItem(neworderitem)
//			endif
//			ask if more orderitems
//		end while when no more order items
//		cust.addOrder(order object)