#include "pch.h"
#include <iostream>
#include <vector>
#include <fstream>
#include<string>
#include <algorithm>
#include <interface.h>
using namespace std;

const int SIZE = 250;

struct CarBrand
{
	string brand;
	vector<string> colors;
};

struct CarInfo
{
	char brand[SIZE];
	char color[SIZE];
	char fullName[SIZE];
	char licensePlate[SIZE];
};

int numberOfRecords(char* direction)
{
	CarInfo item;
	ifstream file;
	file.open(direction);
	file.seekg(0, ios::end);
	int result = file.tellg() / sizeof(item);
	file.close();
	return result;
}

vector<CarInfo> getAllRecordsFromFile(char* direction)
{
	int countOfRecords = numberOfRecords(direction);
	vector<CarInfo> arrayOfRecords(countOfRecords);
	fstream file(direction, ios::binary | ios::in);
	for (int i = 0; i < countOfRecords; i++)
		file.read(reinterpret_cast<char*>(&arrayOfRecords[i]), sizeof(arrayOfRecords[i]));
	file.close();
	return arrayOfRecords;
}

void whichColor(char* direction)
{
	vector <string> brands;
	vector<CarInfo> car1 = getAllRecordsFromFile(direction);
		for (int j = 0; j < car1.size(); j++)
			if(find(brands.begin(),brands.end(), car1[j].brand)==brands.end()) // если элемент отсутствует в векторе (==), присутствует(!=)
			brands.push_back(car1[j].brand);
	vector<CarBrand> car(brands.size());
	for (int i = 0; i < car.size(); i++)
	{
		car[i].brand = brands[i];
		for (int j = 0; j < car1.size(); j++)
		{
			if (car1[j].brand == brands[i])
				car[i].colors.push_back(car1[j].color);
		}
		//sort(car[i].colors.begin(), car[i].colors.end());
	}
	for (int i = 0; i < car.size(); i++)
	{
		cout << car[i].brand << "\n";
		for (int j = 0; j < car[i].colors.size(); j++)
			cout << car[i].colors[j] << "\n";
	}
	int count=0, maxcount=1;
	vector<string> listOfColors;
	for (int k = 0; k < car.size(); k++)
	{
		listOfColors.clear();
		for (int i = 0; i < car[k].colors.size(); i++) // Перебираем все элементы массива.
		{
			count = 0; // Счетчик в 0.
			for (int j = i; j < car[k].colors.size(); j++) // Перебираем все элементы от i до конца.
				if (car[k].colors[i] == car[k].colors[j]) // Если элемент [i] совпадает с одним из последующих [j],
					count++;
			if (count == maxcount) // Если очередная буква встречается maxcount раз,
				listOfColors.push_back(car[k].colors[i]); // То занесём её в список.
			if (count > maxcount) // Если число больше максимального,
			{
				maxcount = count; // тогда оно максимальное.
				listOfColors.clear();
				listOfColors.push_back(car[k].colors[i]);
			}
		}
		cout << car[k].brand << " ";
		for (int i = 0; i < listOfColors.size(); i++)
			cout << listOfColors[i] << " ";
		cout << endl;

	}
	}

void showRecords(char* direction)
{
	int countOfRecords = numberOfRecords(direction);
	vector<CarInfo> arrayOfRecords = getAllRecordsFromFile(direction);
	for (int i = 0; i < countOfRecords; i++)
	{
		cout << "\n" << i + 1 << " item\n";
		cout << "brand " << arrayOfRecords[i].brand;
		cout << "\ncolor " << arrayOfRecords[i].color;
		cout << "\nfull name " << arrayOfRecords[i].fullName;
		cout << "\nlicense plate " << arrayOfRecords[i].licensePlate << "\n\n";
	}
}

void addRecordToBack(char* direction)
{
	ofstream file;
	CarInfo item;
	int n = 0;
	cout << "Введите кол-во новых записей: "; n = Input(0, 10);
	file.open(direction, ios::binary | ios::out | ios::app);
	for (int i = 0; i < n; i++)
	{
		cin.clear();
		cout << i + 1 << " item\n";
		cout << "brand "; cin.getline(item.brand, SIZE, '\n');
		cout << "color "; cin.getline(item.color, SIZE, '\n');
		cout << "full name "; cin.getline(item.fullName, SIZE, '\n');
		cout << "license plate "; cin.getline(item.licensePlate, SIZE, '\n');
		file.write(reinterpret_cast<char*>(&item), sizeof(item));
	}
	file.close();
}
//



void deleteRecord(char* direction)
{
	int countOfRecords = numberOfRecords(direction), n, k = 0;
	vector<CarInfo> arrayOfRecords(countOfRecords - 1);
	cout << "Введите номер записи для удаления: "; n = Input(0, countOfRecords + 1);
	fstream file(direction, ios::binary | ios::in);
	for (int i = 0; i < countOfRecords; i++)
	{
		if (i != n - 1)
		{
			file.read(reinterpret_cast<char*>(&arrayOfRecords[k]), sizeof(arrayOfRecords[k]));
			k++;
		}
	}
	file.close();
	file.open(direction, ios::binary | ios::out);
	file.close();
	file.open(direction, ios::binary | ios::out);
	for (int i = 0; i < countOfRecords - 1; i++)
		file.write(reinterpret_cast<char*>(&arrayOfRecords[i]), sizeof(arrayOfRecords[i]));
	file.close();
}

void editRecord(char* direction)
{
	int n, nField, k = 0;
	int countOfRecords = numberOfRecords(direction);
	vector<CarInfo> arrayOfRecords = getAllRecordsFromFile(direction);
	cout << "Кол-во записей: " << countOfRecords << "\n";
	cout << "Введите номер записи для редактирования: "; n = Input(0, countOfRecords + 1);
	cout << "\n 1 - brand, 2 - color, 3 - full name, 4 - license plate\n";
	cout << "Введите номер поля для редактирования: "; nField = Input(1, 5);

	switch (nField)
	{
	case 1:
	{
		cin.clear();
		cout << "brand "; cin.getline(arrayOfRecords[n - 1].brand, SIZE, '\n');
		break;
	}
	case 2:
	{
		cin.clear();
		cout << "color "; cin.getline(arrayOfRecords[n - 1].color, SIZE, '\n');
		break;
	}
	case 3:
	{
		cin.clear();
		cout << "full name "; cin.getline(arrayOfRecords[n - 1].fullName, SIZE, '\n');
		break;
	}
	case 4:
	{
		cin.clear();
		cout << "license plate "; cin.getline(arrayOfRecords[n - 1].licensePlate, SIZE, '\n');
		break;
	}
	}
	fstream file(direction, ios::binary | ios::out);
	for (int i = 0; i < countOfRecords; i++)
		file.write(reinterpret_cast<char*>(&arrayOfRecords[i]), sizeof(arrayOfRecords[i]));
	file.close();
}