#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include "string.h"
using namespace std;
struct Car {
    char manufacturer[50];
    char model[50];
    int price;
    int power;
    int year;
};
void input_one(Car *cars, int n) {
    getchar();
    cout << "Car: " << n + 1 << endl;
    cout << "Manufacturer: ";
    gets_s(cars[n].manufacturer);
    cout << "Model: ";
    gets_s(cars[n].model);
    cout << "Price: ";
    cin >> cars[n].price;
    cout << "Power: ";
    cin >> cars[n].power;
    cout << "Year: ";
    cin >> cars[n].year;
    cout << endl;
}
void input(Car *cars, int n) {
    for (int i = 0; i < n; i++) {
        input_one(cars, i);
    }
}
void print_car(Car *cars, int n) {
    cout << "Car " << n + 1 << endl;
    cout << "Manufacturer: " << cars[n].manufacturer << endl;;
    cout << "Model: " << cars[n].model << endl;;
    cout << "Price: " << cars[n].price << endl;;
    cout << "Power: " << cars[n].power << endl;
    cout << "Year: " << cars[n].year << endl;
    cout << endl;
}
void print_cars(Car *cars, int n) {
    cout << endl;
    for (int i = 0; i < n; i++) {
        print_car(cars, i);
    }
    cout << endl;
}
void sort_by_price(Car *cars, int n) {
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++)
            if (cars[i].price < cars[j].price) {
                Car temp = cars[i];
                cars[i] = cars[j];
                cars[j] = temp;
            }
    }
}
void sort_by_power(Car *cars, int n) {
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++)
            if (cars[i].power < cars[j].power) {
                Car temp = cars[i];
                cars[i] = cars[j];
                cars[j] = temp;
            }
    }
}
void sort_by_year(Car *cars, int n) {
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++)
            if (cars[i].year < cars[j].year) {
                Car temp = cars[i];
                cars[i] = cars[j];
                cars[j] = temp;
            }
    }
}
void sort_cars(Car *cars, int n) {
    cout << "Choose how do you want to sort cars: " << endl;
    cout << "1 - price" << endl;
    cout << "2 - power" << endl;
    cout << "3 - year" << endl;
    int a;
    cout << "Your choice: ";
    cin >> a;
    switch (a) {
        case 1:
            sort_by_price(cars, n);
            break;
        case 2:
            sort_by_power(cars, n);
            break;
        case 3:
            sort_by_year(cars, n);
            break;
        default:
            return;
    }
    print_cars(cars, n);
}
Car *delete_element(Car *cars, int *n) {
    print_cars(cars, *n);
    int el;
    getchar();
    cout << "Which car do you want to delete? ";
    cin >> el;
    el--;
    Car *temp = new Car[(*n) - 1];
    int p = 0;
    for (int i = 0; i < *n; i++) {
        if (el != i) {
            temp[p] = cars[i];
            p++;
        }
    }
    (*n)--;
    cars = new Car[*n];
    for (int i = 0; i < (*n); i++) {
        cars[i] = temp[i];
    }
    return cars;
}
Car *add_element(Car *cars, int *n) {
    Car *temp = new Car[*n];
    for (int i = 0; i < *n; i++) {
        temp[i] = cars[i];
    }
    (*n)++;
    cars = new Car[*n];
    for (int i = 0; i < (*n) - 1; i++) {
        cars[i] = temp[i];
    }
    input_one(cars, (*n) - 1);
    return cars;
}
void modify_element(Car *cars, int n) {
    print_cars(cars, n);
    int el;
    getchar();
    cout << "which car do you want to modify? ";
    cin >> el;
    input_one(cars, el - 1);
}
void search_car(Car *cars, int n) {
    char str[50];
    getchar();
    cout << "Which manufacturer of car do you want to find: ";
    gets_s(str);
    for (int i = 0; i < n; i++) {
        if (strcmp(str, cars[i].manufacturer) == 0) {
            cout << endl;
            print_car(cars, i);
            cout << endl;
        }
    }
}
int menu() {
    int a;
    cout << endl;
    cout << "1 - to add car" << endl;
    cout << "2 - to find car" << endl;
    cout << "3 - to watch cars" << endl;
    cout << "4 - to modify car" << endl;
    cout << "5 - to delete car" << endl;
    cout << "6 - to sort cars" << endl;
    cout << "0 - to exit" << endl;
    cout << endl;
    cout << "Your choice: ";
    cin >> a;
    cout << endl;
    return a;
}
void print_one_to_file(FILE *fptr, Car *cars, int n) {
    fprintf(fptr, "Car %d\n", n + 1);
    fprintf(fptr, "Manufacturer: %s\n", cars[n].manufacturer);
    fprintf(fptr, "Model: %s\n", cars[n].model);
    fprintf(fptr, "Price: %d\n", cars[n].price);
    fprintf(fptr, "Power: %d\n", cars[n].power);
    fprintf(fptr, "Year: %d\n\n", cars[n].year);
}
void print_to_file(FILE *fptr, Car *cars, int n) {
    fprintf(fptr, "\n");
    for (int i = 0; i < n; i++) {
        print_one_to_file(fptr, cars, i);
    }
    fprintf(fptr, "\n");
}
int main() {
    int n;
    cout << "How many cars do you want to add: ";
    cin >> n;
    Car *cars = new Car[n];
    input(cars, n);
    FILE *fPtr;
    fPtr = fopen("file1.txt", "wt");
    if (fPtr == NULL)
    {
        printf("Unable to create file.\n");
        exit(EXIT_FAILURE);
    }
    //fputs(data, fPtr);
    fprintf(fPtr, "\nAll the cars");
    print_to_file(fPtr, cars, n);
    while (true) {
        switch (menu()) {
            case 1:
                cars = add_element(cars, &n);
                fprintf(fPtr, "\nAdded new element");
                print_to_file(fPtr, cars, n);
                break;
            case 2:
                search_car(cars, n);
                break;
            case 3:
                print_cars(cars, n);
                fprintf(fPtr, "\nWatch cars");
                print_to_file(fPtr, cars, n);
                break;
            case 4:
                modify_element(cars, n);
                fprintf(fPtr, "\nModified element");
                print_to_file(fPtr, cars, n);
                break;
            case 5:
                cars = delete_element(cars, &n);
                fprintf(fPtr, "\nDeleted an element");
                print_to_file(fPtr, cars, n);
                break;
            case 6:
                sort_cars(cars, n);
                fprintf(fPtr, "\nSorted cars");
                print_to_file(fPtr, cars, n);
                break;
            case 0:
                return 0;
            default:
                return 0;
        }
    }
}