/*
THIS CODE HAS BEEN TESTED AND IS FULLY OPERATIONAL.

Problem Statement: Write C++ program using STL for sorting and searching with user defined records such as item record (Item code, name, cost,quantity) using vector container

Code from Object Oriented Programming (SPPU - Second Year - Computer Engineering - Content) repository on KSKA Git: https://git.kska.io/sppu-se-comp-content/ObjectOrientedProgramming
*/

// BEGINNING OF CODE
#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;

class Item {
	public:
	char name[10];
	int quantity;
	int cost;
	int code;

	bool operator==(const Item& i1) {
		if(code==i1.code)
		return 1;
		return 0;
	}

	bool operator<(const Item& i1) {
		if(code<i1.code)
		return 1;
		return 0;
	}
};

vector<Item> o1;
void print(Item &i1);
void display();
void insert();
void search();
void dlt();

bool compare(const Item &i1, const Item &i2) {
	return i1.cost < i2.cost;
}

int main() {
	int ch;
	do {
		cout<<"\n*** Menu ***";
		cout<<"\n1.Insert";
		cout<<"\n2.Display";
		cout<<"\n3.Search";
 		cout<<"\n4.Sort";
		cout<<"\n5.Delete";
		cout<<"\n6.Exit";
		cout<<"\nEnter your choice: ";
		cin>>ch;

	switch(ch) {
		case 1:
			insert();
			break;
		case 2:
			display();
			break;
		case 3:
			search();
			break;
		case 4:
			sort(o1.begin(),o1.end(),compare);
			cout<<"\n\n Sorted on Cost";
			display();
			break;
		case 5:
			dlt();
			break;
		case 6:
			exit(0);
		default:
		  cout<<endl<<"Please choose a valid option."<<endl;
	}
} while(ch!=7);
return 0;
}

void insert() {
	Item i1;
	cout<<"\nEnter Item Name: ";
	cin>>i1.name;
	cout<<"\nEnter Item Quantity: ";
	cin>>i1.quantity;
	cout<<"\nEnter Item Cost: ";
	cin>>i1.cost;
	cout<<"\nEnter Item Code: ";
	cin>>i1.code;
	o1.push_back(i1);
}

void display() {
	for_each(o1.begin(),o1.end(),print);
}

void print(Item &i1) {
	cout<<"\n";
	cout<<"\nItem Name: "<<i1.name;
	cout<<"\nItem Quantity: "<<i1.quantity;
	cout<<"\nItem Cost: "<<i1.cost;
	cout<<"\nItem Code: "<<i1.code;
}

void search() {
	vector<Item>::iterator p;
	Item i1;
	cout<<"\nEnter Item Code to search: ";
	cin>>i1.code;
	p=find(o1.begin(),o1.end(),i1);

	if(p==o1.end()) {
		cout<<"\nNot found.";
	}
	else {
		cout<<"\nFound."<<endl;
		cout<<"Item Name: "<<p ->name<<endl;
		cout<<"Item Quantity: "<<p ->quantity<<endl;
		cout<<"Item Cost: "<<p ->cost<<endl;
		cout<<"Item Code: "<<p ->code<<endl;
	}
}

void dlt() {
	vector<Item>::iterator p;
	Item i1;
	cout<<"\nEnter Item Code to delete: ";
	cin>>i1.code;
	p=find(o1.begin(),o1.end(),i1);

	if(p==o1.end()) {
		cout<<"\nNot found.";
	}
	else {
		o1.erase(p);
		cout<<"\nDeleted.";
	}
}
// END OF CODE