#include<iostream>
#include<fstream>
#include<stdlib.h>
#include<vector>
using namespace std;
struct Date{
    int year;
    int month;
    int day;
};
struct Drug{
    char drugName[100];
    char drugManufacturer[100];
    int drugAmountDelivered;
    int drugAmountInStock;
    Date drugExpirationDate;
    bool drugPrescriptionRequired;
    Date drugManufacturedDate;
    char drugShipment[100];
};
vector<Drug> drugs;
static int drugMinAmount= 5;

void clearConsole(){
    system("CLS");
}
void menu();
void createNewDrug(){
    cin.clear();
    cin.sync();
    clearConsole();
    Drug drugTemporaryInput;
    string drugTemporaryPrescription;
    cout<<"\t\t## CREATE NEW DRUG ##"<<endl;
    cout<<"Please enter the required information. You can exit at any time by inputting 'exit' or 'quit'\n\n"<<endl;
    cout<<"Drug name (100 characters limit):"<<endl;
    cin.getline(drugTemporaryInput.drugName, 100);
    cout<<"Drug manufacturer (100 characters limit):"<<endl;
    cin.getline(drugTemporaryInput.drugManufacturer, 100);
    cout<<"Amount delivered:"<<endl;
    cin>>drugTemporaryInput.drugAmountDelivered;
    cout<<"Amount currently in stock:"<<endl;
    cin>>drugTemporaryInput.drugAmountInStock;

    cout<<"Expiration date YEAR:"<<endl;
    cin>>drugTemporaryInput.drugExpirationDate.year;
        while(drugTemporaryInput.drugExpirationDate.year<2018 || drugTemporaryInput.drugExpirationDate.year>3000){
            cout<<"Invalid year, try again:"<<endl;
            cin>>drugTemporaryInput.drugExpirationDate.year;
        }

    cout<<"Expiration date MONTH:"<<endl;
    cin>>drugTemporaryInput.drugExpirationDate.month;
        while(drugTemporaryInput.drugExpirationDate.month<1 || drugTemporaryInput.drugExpirationDate.month>12){
            cout<<"Invalid month, try again:"<<endl;
            cin>>drugTemporaryInput.drugExpirationDate.month;
        }
    cout<<"Expiration date DAY:"<<endl;
    cin>>drugTemporaryInput.drugExpirationDate.day;
        while(drugTemporaryInput.drugExpirationDate.day<1 || drugTemporaryInput.drugExpirationDate.day>31){
            cout<<"Invalid day, try again:"<<endl;
            cin>>drugTemporaryInput.drugExpirationDate.day;
        }
    cin.clear();
    cin.sync();
    cout<<"Prescription required? Input 'yes' or 'no':"<<endl;
    cin>>drugTemporaryPrescription;
    while(drugTemporaryPrescription!="yes" && drugTemporaryPrescription!="no")
    {
        cout<<drugTemporaryPrescription;
        cout<<"Invalid input, please try again. Input 'yes' or 'no':"<<endl;
        cin>>drugTemporaryPrescription;
    }
    if(drugTemporaryPrescription=="yes"){
        drugTemporaryInput.drugPrescriptionRequired=true;
    }else if(drugTemporaryPrescription=="no"){
        drugTemporaryInput.drugPrescriptionRequired=false;
    }else{
        cout<<"Something went wrong..."<<endl;
    }


       cout<<"Date manufactured, YEAR:"<<endl;
    cin>>drugTemporaryInput.drugManufacturedDate.year;
        while(drugTemporaryInput.drugManufacturedDate.year<2010 || drugTemporaryInput.drugManufacturedDate.year>3000){
            cout<<"Invalid year, try again:"<<endl;
            cin>>drugTemporaryInput.drugManufacturedDate.year;
        }

    cout<<"Date manufactured, MONTH:"<<endl;
    cin>>drugTemporaryInput.drugManufacturedDate.month;
        while(drugTemporaryInput.drugManufacturedDate.month<1 || drugTemporaryInput.drugManufacturedDate.month>12){
            cout<<"Invalid month, try again:"<<endl;
            cin>>drugTemporaryInput.drugManufacturedDate.month;
        }
    cout<<"Date manufactured, DAY:"<<endl;
    cin>>drugTemporaryInput.drugManufacturedDate.day;
        while(drugTemporaryInput.drugManufacturedDate.day<1 || drugTemporaryInput.drugManufacturedDate.day>31){
            cout<<"Invalid day, try again:"<<endl;
            cin>>drugTemporaryInput.drugManufacturedDate.day;
        }

    cout<<"Drug shipment (100 characters limit):"<<endl;
    cin.getline(drugTemporaryInput.drugShipment, 100);
    drugs.push_back(drugTemporaryInput);
    clearConsole();
    cout<<"Drug successfully added to database!\n\n"<<endl;
    menu();
}
void viewDrugs(){
    string userResponseViewDrugs;
    cout<<"###Drugs currently in database:"<<endl;
    cout<<drugs.size();
    for(int i=drugs.size();i>0; i--){
        cout<<"DRUG #"<<i<<endl;
        cout<<"Name: "<<drugs[i].drugName<<endl;
        cout<<"Manufacturer: "<<drugs[i].drugManufacturer<<endl;
        cout<<"Amount delivered: "<<drugs[i].drugAmountDelivered<<endl;
        cout<<"Amount in stock: "<<drugs[i].drugAmountInStock<<endl;
        cout<<"Expiration date: "<<drugs[i].drugExpirationDate.day<<"."<<drugs[i].drugExpirationDate.month<<"."<<drugs[i].drugExpirationDate.year<<"."<<endl;
        cout<<"Requires prescription?: "<<drugs[i].drugPrescriptionRequired<<endl;
        cout<<"Date of manufacture: "<<drugs[i].drugManufacturedDate.day<<"."<<drugs[i].drugManufacturedDate.month<<"."<<drugs[i].drugManufacturedDate.year<<"."<<
        cout<<"Shipment: "<<drugs[i]. drugShipment<<endl;
        cout<<endl;
    }
    cout<<"Input 'menu' to return to the main menu or 'exit' to quit"<<endl;
    while(userResponseViewDrugs!="menu"&&userResponseViewDrugs!="exit"){
        cin>>userResponseViewDrugs;
        if(userResponseViewDrugs=="menu"){
            menu();
        }else if(userResponseViewDrugs=="exit"){
            exit(0);
        }else{
        cout<<"Invalid input, enter 'menu' to return to the main menu or 'exit' to quit"<<endl;
        }
    }
}
void menu(){
    int userResponseMenu;
    cout<<"\t\t## MENU ##"<<endl;
    cout<<"1. Create new drug profile..."<<endl;
    cout<<"2. Delete drug profile..."<<endl;
    cout<<"3. View all drug profiles..."<<endl;
    cout<<"4. View all drug profiles between two manufacture dates..."<<endl;
    cout<<"5. View drug profiles by manufacturer..."<<endl;
    cout<<"6. View drugs with less than " <<drugMinAmount<< "in stock..."<<endl;
    cout<<"7. View total amount of drug profiles in system..."<<endl;
    cout<<"To access the option of your choosing, simply input its number and press ENTER"<<endl;
    cout<<"To exit, please enter 0."<<endl;
    while(true){
        cin>>userResponseMenu;
        switch(userResponseMenu)
        {
            case 0:
                exit(0);
            case 1:
                createNewDrug();
                break;
            case 3:
                viewDrugs();
            default:
                cout<<"Invalid input..."<<endl;

        }
    }
}
int main(){
    cout<<"Welcome to the world worst apothecary stock management software!!"<<endl;
    menu();
}
/*Тема 4: Да се състави програма на C++ за нуждите
на аптека, която поддържа следната информация:
Наименование на медикамент;
Производител;
Брой доставени;
Брой в наличност;
Срок на годност на медикамент;
Отпуска се с рецепта;
Дата на производство;
Партида;
Програмата извършва следните операции:
1.Създава масив от медикаменти;
2.Добавя нов медикамент;
3.Изтрива медикамент;
4.Извежда списък с имената на всички медикаменти
между две въведени дати на производство;
5.Извежда списък на медикаментите, чиито
производители започват с дадена дума;
6.Извежда списък на медикаментите, чиято
наличност е под 5 към момента на ревизията;
7.Извежда общ брой медикаменти в аптеката.*/