#include <iostream>
#include <iomanip>
#include <fstream>
#include <sstream>
#include <string>
using namespace std;

// Enum for menu options
enum MenuOption {
    PRINT_UNSORTED_INVENTORY = 1,
    PRINT_INVALID_RECORDS = 2,
    QUIT_PROGRAM = 3
};

// Class for handling car records
class Cars {
public:
    string CarID;
    string CarModel;
    string Manufacturer;
    int Amount_on_Hand;
    bool isValidRecord() {
        return CarID.length() == 17 && CarModel.length() == 17 && Manufacturer.length() == 17 && Amount_on_Hand >= 0;
    }
};

// Function declarations
void read_file(Cars cars[], Cars validCars[], Cars errorCars[]);
void print_record(Cars cars[]);
void print_line(Cars cars[]);
void save_error(Cars errorCars[]);
void save_valid(Cars validCars[]);
void menu(Cars cars[], Cars errorCars[]);

//Main Function use functions to read file, print file, and save invalid and valid records
int main() {

    Cars cars[100];
    Cars errorCars[100];
    Cars validCars[100];
    read_file(cars, validCars, errorCars);
    menu(cars, errorCars);
    return 0;
}

// Function definitions
void print_table_header() {
    cout << "CarID            CarModel         Manufacturer      Amount_on_Hand" << endl;
}

void print_record_table(Cars cars[]) {
    for (int i = 0; i < 10; i++) {
        cout << left << setw(17) << cars[i].CarID << " ";
        cout << setw(17) << cars[i].CarModel << " ";
        cout << setw(17) << cars[i].Manufacturer << " ";
        cout << right << setw(10) << fixed << setprecision(2) << cars[i].Amount_on_Hand << endl;
    }
}

void save_table_header(ofstream& file) {
    file << "CarID            CarModel         Manufacturer      Amount_on_Hand" << endl;
}

void save_record_table(ofstream& file, Cars cars[]) {
    for (int i = 0; i < 10; i++) {
        file << left << setw(17) << cars[i].CarID << " ";
        file << setw(17) << cars[i].CarModel << " ";
        file << setw(17) << cars[i].Manufacturer << " ";
        file << right << setw(10) << fixed << setprecision(2) << cars[i].Amount_on_Hand << endl;
    }
}

void read_file(Cars cars[], Cars validCars[], Cars errorCars[]) {
    // Function to read from input file
    ifstream inputFile("./inputfile.txt");
    string line;
    int carIndex = 0;
    int validIndex = 0;
    int errorIndex = 0;
    while (getline(inputFile, line)) {
        stringstream ss(line);
        string itemID, itemName, manufacturer;
        int quantity;
        if (getline(ss, itemID, ',') && getline(ss, itemName, ',') && getline(ss, manufacturer, ',') && ss >> quantity) {
            Cars car;
            car.CarID = itemID;
            car.CarModel = itemName;
            car.Manufacturer = manufacturer;
            car.Amount_on_Hand = quantity;

            if (car.isValidRecord()) {
                validCars[validIndex++] = car;
            }
            else {
                errorCars[errorIndex++] = car;
            }

            cars[carIndex++] = car; // Add the car record to the cars array
        }
    }
    inputFile.close();
}
void print_record(Cars cars[]) {
    // Function to print records
    for (int i = 0; i < 10; i++) {
        cout << cars[i].CarID << " " << cars[i].CarModel << " " << cars[i].Manufacturer << " " << cars[i].Amount_on_Hand << endl;
    }
}
void print_line(Cars cars[]) {
    // Function to print a single record
    for (int i = 0; i < 10; i++) {
        cout << cars[i].CarID << " " << cars[i].CarModel << " " << cars[i].Manufacturer << " " << cars[i].Amount_on_Hand << endl;
    }
}
void save_error(Cars errorCars[]) {
    // Function to save error records to a file
    ofstream errorFile("error.txt");
    for (int i = 0; i < 10; i++) {
        if (errorCars[i].CarID != "") {
            errorFile << errorCars[i].CarID << " " << errorCars[i].CarModel << " " << errorCars[i].Manufacturer << " " << errorCars[i].Amount_on_Hand << endl;
        }
    }
    errorFile.close();
}
void save_valid(Cars validCars[]) {
    // Function to save valid records to a file
    ofstream validFile("valid.txt");
    {
        for (int i = 0; i < 10; i++) {
            // Save validCars entries to valid.txt
        }
    }
}
void menu(Cars cars[], Cars errorCars[]) {
    // Function to display a menu using switch statement
    MenuOption choice;
    do {
        cout << "Menu:\n1. Print all items in the inventory unsorted\n2. Print invalid records from the error file\n3. Quit the program\n";
        cout << "Enter your choice: ";
        int menuChoice;
        cin >> menuChoice;
        choice = static_cast<MenuOption>(menuChoice);
        switch (choice) {
        case PRINT_UNSORTED_INVENTORY:
            print_record(cars);
            break;
        case PRINT_INVALID_RECORDS:
            print_record(errorCars);
            break;
        case QUIT_PROGRAM:
            cout << "Exiting the program.\n";
            return;
        default:
            cout << "Invalid choice. Please try again.\n";
        }
    } while (true);
}