/*
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 person record (Name, DOB, Telephone number) 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 <vector>
#include <algorithm>
#include <iterator>
using namespace std;

class Person
{
public:
string name;
int day,month,year;
int telephone;
string dob;
Person(){
name="";
telephone=0;
day=1;
month=1;
year=2023;

}
bool operator==(Person p2){
   return name==p2.name;
}
void input(){
cout<<"Enter name: ";
cin>>name;
cout<<"Enter telephone: ";
cin>>telephone;
cout<<"Date of birth (first DD [ENTER], then MM [ENTER], then YYYY [ENTER] format): ";
cin>>day>>month>>year;
dob=""+ to_string(day)+"/"+to_string(month)+"/"+to_string(year);
}
void display ()
{
cout<<"(Name: "<<name<<")(Telephone: "<<telephone<<")(DOB: "<<dob<<")";
}
};

bool compareDate(Person p1,Person p2){
return ((p1.year==p2.year)?
((p1.month==p2.month)?
((p1.day<=p2.day)? true :false)
:((p1.month<p2.month)?true:false ))
:((p1.year<p2.year)?true:false ));

}
bool compareTelephone(Person p1,Person p2){
return (p1.telephone<p2.telephone);
}
bool compareName(Person p1,Person p2){
return (p1.name<p2.name);
}

Person return_obj(){
    Person a;
    a.input();
    return a;
}
void srch(vector<Person> vs1){
    Person p1;
cout<<"Enter name of the person you want to find: "<<endl;
cin>>p1.name;
vector<Person>::iterator ir;
ir=find(vs1.begin(),vs1.end(),p1);
if(ir==vs1.end())
cout<<"The person with name "<<p1.name<<"is not in the vector."<<endl;
else{
cout<<"Person found!"<<endl;
ir->display();cout<<endl;
}
}
void deletevec(vector<Person>& vs1){
    Person p1;
    cout<<"Enter name of the person you want to delete: "<<endl;
    cin>>p1.name;
    vector<Person>::iterator ir;
    ir=find(vs1.begin(),vs1.end(),p1);
    if(ir==vs1.end())
    cout<<"The person with name "<<p1.name<<"is not in the vector."<<endl;
    else
    {   ir->display();cout<<"\n";
        vs1.erase(ir);
        cout<<"Deleted\n";
    }
}

void vec_display(vector<Person> vs1){
    cout<<"[";
                for (auto elem:vs1){
                elem.display();
                cout<<",";
                }
                cout<<"]\n";
}
int main(){

    vector<Person> v1;

    cout<<"Enter number of people: ";
    int n,ch,ch2;
    cin>>n;

    for (int i=0;i<n;i++){
    v1.push_back(return_obj());
    }

    while(1){
        cout<<"\t\tMenu\n1.Add Person\n";
        cout<<"2.Delete Person\n";
        cout<<"3.Sort\n";
        cout<<"4.Search\n";
        cout<<"5.Display\n";
        cout<<"6. Exit\n";
        cout<<"Choose an option (1-6): ";
        cin>>ch;
        switch(ch){
            case 1:
                v1.push_back(return_obj());
                break;
            case 2:
                deletevec(v1);
                break;
            case 3:
                cout<<"1.Sort by DOB , 2 Sort by Name , 3 Sort by Telephone no.\n";
                cin>>ch2;
                switch(ch2){
                    case 1:
                        sort(v1.begin(),v1.end(),compareDate);
                        break;
                    case 2:
                        sort(v1.begin(),v1.end(),compareName);
                        break;
                    case 3:
                        sort(v1.begin(),v1.end(),compareTelephone);
                        break;
                }
                vec_display(v1);
                break;
            case 4:
                srch(v1);
                    break;
            case 5:
                vec_display(v1);break;
            case 6:
                exit(1);
            default:
                cout<<"Please choose a valid option.\n";
        }
    }
}
// END OF CODE