//
//  main.cpp
//  Book Project
//
//  Created by Isaac  Harris on 4/19/17.
//  Copyright © 2017 Isaac  Harris. All rights reserved.
//


#include <sstream>
#include <fstream>
#include <iostream>
#include <vector>
using namespace std;

class Book
{
private:
    string title;
    string authorLastName;
    string authorFirstName;
    string authorMiddleInitial;
    string ISBN;
    string price;
    string publisher;
    string publicationDate;
    int pages;
    int inventoryCount;

public:
    string getTitle();
    string getAuthorLastName();
    string getAuthorFirstName();
    string getISBN();
    string getPrice();
    string getPublisher();
    string getPublicationDate();
    int getPages();
    int getInventoryCount();
    void adjustInventoryCount();
    Book(string);
};

Book::Book(string rowData)
{
    istringstream columns(rowData);
    string column;

    int counter = 0;
    while (getline(columns, column, ',')) {
        switch (counter) {
            case 0:
                title = column;
                break;
            case 1:
                authorLastName = column;
                break;
            case 2:
                authorFirstName = column;
                break;
            case 3:
                authorMiddleInitial = column;
                break;
            case 4:
                ISBN = column;
                break;
            case 5:
                price = column;
                break;
            case 6:
                publisher = column;
                break;
            case 7:
                publicationDate = column;
                break;
            case 8:
                pages = stoi(column);
                break;
            case 9:
                inventoryCount = stoi(column);
                break;
        }
        counter++;
    }
}

string Book::getTitle()
{
    return title;
}
string Book::getAuthorLastName()
{
    return authorLastName;
}
string Book::getAuthorFirstName()
{
    return authorFirstName;
}
string Book::getISBN()
{
    return ISBN;
}
int Book::getInventoryCount()
{
    return inventoryCount;
}
void Book::adjustInventoryCount()
{
    int adjustment;

    cout << "Enter the amount you would like to adjust the inventory count by: "; cin >> adjustment;
    inventoryCount += adjustment;
}
string promptISBN()
{
    string userISBN;
    cout << "Please input ISBN number here: ";
    cin >> userISBN;

    return userISBN;
}

void ISBNerror()
{
    cout << "Sorry, that ISBN number does not exist in our database. You will now be returned to the menu options.\n\n";
}

int main()
{
    ifstream inputFile;
    //inputFile.open("c:\\temp\\books.txt", ios::in);
    inputFile.open("/Users/isaacharris/Desktop/books.txt");
    if (!inputFile.is_open())
    {
        cout << "The file could not be opened or found." << endl;
        system("pause");
        return 1;
    }

    vector<Book> books;

    string rowData;
    // This will return the header row--to be discarded.
    getline(inputFile, rowData);

    while (getline(inputFile, rowData))
    {
        Book newBook = Book(rowData);
        books.push_back(newBook);
    }

    inputFile.close();

    string menuOption;

    while (menuOption != "4")
    {
        cout << "1) Display book details" << endl;
        cout << "2) Adjust inventory counts" << endl;
        cout << "3) Display inventory" << endl;
        cout << "4) Quit" << "\n\n";
        cout << "Type the number of the menu option you would like to execute: "; cin >> menuOption;

        string userISBN;

        if (menuOption == "1")
        {
            userISBN = promptISBN();
            for (long i = 0; i < books.size(); i++)
            {
                if (userISBN == books[i].getISBN())
                {
                    cout << endl << "Title: " << books[i].getTitle() << endl;
                    cout << "Author: " << books[i].getAuthorLastName() << ", " << books[i].getAuthorFirstName() << "\n\n";
                }
            }

            int counter = 0;
            for (long i = 0; i < books.size(); i++)
            {
                if (userISBN != books[i].getISBN())
                {
                    counter++;
                }
            }
            if (counter++ == books.size())
            {
                ISBNerror();
            }
        }

        else if (menuOption == "2")
        {
            userISBN = promptISBN();
            for (long i = 0; i < books.size(); i++)
            {
                if (userISBN == books[i].getISBN())
                {
                    books[i].getInventoryCount();
                    cout << endl << "Current inventory count: " << books[i].getInventoryCount() << "\n";
                    books[i].adjustInventoryCount();
                    cout << endl;
                }
            }

            int counter = 0;
            for (long i = 0; i < books.size(); i++)
            {
                if (userISBN != books[i].getISBN())
                {
                    counter++;
                }
            }
            if (counter++ == books.size())
            {
                ISBNerror();
            }
        }

        else if (menuOption == "3")
        {
            userISBN = promptISBN();
            for (long i = 0; i < books.size(); i++)
            {
                if (userISBN == books[i].getISBN())
                {
                    cout << endl << "Current inventory count: " << books[i].getInventoryCount() << "\n\n";
                }
            }

            int counter = 0;
            for (long i = 0; i < books.size(); i++)
            {
                if (userISBN != books[i].getISBN())
                {
                    counter++;
                }
            }
            if (counter++ == books.size())
            {
                ISBNerror();
            }

        }
        else if (menuOption == "4")
        {
            cout << "Exiting program\n\n";
        }
        else
        {
            cout << "Please type in a number that MATCHES one of the menu options.\n\n";
        }
    }

    system("pause");
    return 0;
}