#include <iostream>
#include <vector>
#include <string>
#include <fstream>
#include <cstdlib>
#include <regex>

using namespace std;

int nr_ID;

struct movie {
    int id;
    char title[50];
    unsigned int year;
    char desc[1000];
    char type[8];
    unsigned int number_in;
    unsigned int number_out;

};

void save(vector<movie> &A)
{
    ofstream output_file("base.bin", ios::binary);
    if (output_file) {
        int w = A.size() * sizeof(movie);
        output_file.write((char*)&A[0], w);
        output_file.close();

    }
    else {
        cout << "nie udalo sie otworzyc pliku" << endl;
        exit(1);
    }


}
void load(vector<movie> &A) {
    ifstream input_file("base.bin", ios::binary);

    if (input_file) {
        input_file.seekg(0, ios::end);
       int fileSize = ((input_file.tellg()) / sizeof(movie));
        input_file.seekg(0, ios::beg);
        A.resize(fileSize);

        int w = A.size() * sizeof(movie);
        input_file.read((char*)&A[0], w);


        input_file.close();
    }

    else {
        cout << "Nie dalo sie otworzyc pliku" << endl;

    }

}

void dodaj(vector<movie> &A)
{
    movie x;
    x.id = nr_ID;
    cout << "Nowy film o numerze id: " << x.id << endl;
    cout << "Tytul: ";
    cin.ignore();
    cin.getline(x.title, 50);
    cout << "Rok wydania: ";
    cin >> x.year;
    cout << "Opis (max 1000 znakow): ";
    cin.ignore();
    cin.getline(x.desc, 1000);
    int a = 0;
    cout << "Jaki nosnik? Wpisz cyfre: \n" << "(1) VHS\n" << "(2) DVD\n" << "(3) BlueRay\n";
    cin >> a;
    switch (a) {
    case 1:
        x.type[0] = 'V';
        x.type[1] = 'H';
        x.type[2] = 'S';
        x.type[3] = '\0';
         break;
    case 2:
        x.type[0] = 'D';
        x.type[1] = 'V';
        x.type[2] = 'D';
        x.type[3] = '\0';
         break;
    case 3:
        x.type[0] = 'B';
        x.type[1] = 'l';
        x.type[2] = 'u';
        x.type[3] = 'e';
        x.type[4] = 'R';
        x.type[5] = 'a';
        x.type[6] = 'y';
        x.type[7] = '\0';
        break;
    }
    cout << "Ilosc sztuk: ";
    cin >> x.number_in;
    x.number_out = 0;
    nr_ID++;

    A.push_back(x);
    system("CLS");
    cout << "Dodano nowy film!" << endl;

}
void Edit(vector<movie>& A) {
    int k;
    cout << "Podaj numer ID filmu, ktory chcesz edytowac: ";
    cin >> k;
    while (k > nr_ID || k < 0) {
        cout << "Niewlasciwy numer ID" << endl;
        cout << "ID: ";
        cin >> k;
    }

    cout << A[k].title << "(tytul)= ";
    cin.ignore();
    cin.getline(A[k].title, 50);
    cout << A[k].year << "(rok wydania)= ";
    cin >> A[k].year;
    cout << "Opis (max 1000 znakow): ";
    cin.ignore();
    cin.getline(A[k].desc, 1000);
    int a = 0;
    cout << "Jaki nosnik? Wpisz cyfre: \n" << "(1) VHS\n" << "(2) DVD\n" << "(3) BlueRay\n" << A[k].type << "= ";
    cin >> a;
    switch (a) {
    case 1:
        A[k].type[0] = 'V';
        A[k].type[1] = 'H';
        A[k].type[2] = 'S';
        A[k].type[3] = '\0';
        break;
    case 2:
        A[k].type[0] = 'D';
        A[k].type[1] = 'V';
        A[k].type[2] = 'D';
        A[k].type[3] = '\0';
        break;
    case 3:
        A[k].type[0] = 'B';
        A[k].type[1] = 'l';
        A[k].type[2] = 'u';
        A[k].type[3] = 'e';
        A[k].type[4] = 'R';
        A[k].type[5] = 'a';
        A[k].type[6] = 'y';
        A[k].type[7] = '\0';
        break;
    }
    cout << A[k].number_in << "(ilosc sztuk)= ";
    cin >> A[k].number_in;
    system("CLS");


}

void Wyp(vector<movie>& A) {
    char c = 'n';
    int k;
    while (c != 'y') {
        cout << "Podaj numer ID filmu, ktory chcesz wyporzyczyc: ";
        cin >> k;
        while (k > nr_ID || k < 0) {
            cout << "Niewlasciwy numer ID" << endl;
            cout << "ID: ";
            cin >> k;
        }
        cout << A[k].title << endl;
        cout << "Rok wydania: " << A[k].year << endl;
        cout << "Opis: " << A[k].desc << endl;
        cout << "Nosnik: " << A[k].type << endl;
        cout << "Ilosc na stanie: " << A[k].number_in << " Wypozyczonych: " << A[k].number_out << endl;
        cout << "Chcesz wypozyczyc ten film? y(yes)/n(no)/e(exit) ";
        cin >> c;
        if (c == 'e') {
            system("CLS");
            return;
        }

    }
    A[k].number_in = A[k].number_in - 1;
    A[k].number_out = A[k].number_out + 1;
    system("CLS");
    cout << "Wypozyczono " << A[k].title << " w wypozyczalni pozostalo: " << A[k].number_in << " kopii " << "wypozyczonych: " << A[k].number_out << " kopii" << endl << endl;

}
void Zwr(vector<movie>& A) {
    char c = 'n';
    int k;
    while (c != 'y') {
        cout << "Podaj numer ID filmu, ktory chcesz zwrocic: ";
        cin >> k;
        while (k > nr_ID || k < 0) {
            cout << "Niewlasciwy numer ID" << endl;
            cout << "ID: ";
            cin >> k;
        }
        cout << A[k].title << " Chcesz zwrocic ten film? y/n ";
        cin >> c;

    }
    A[k].number_in = A[k].number_in + 1;
    A[k].number_out = A[k].number_out - 1;
    system("CLS");
    cout << "Zwrocono " << A[k].title << " w wypozyczalni pozostalo: " << A[k].number_in << " kopii " << "wypozyczonych: " << A[k].number_out << " kopii" << endl << endl;


}

void usun(vector<movie>& A) {
    int x;
    cout << "Podaj nr ID filmu, ktory chcesz usunac: ";
    cin >> x;
    for (int i = 0; i < (nr_ID - x); i++) {

        A[x + i] = A[x + i + 1];

    }
    nr_ID--;

}
void search(vector<movie>& A) {

    cout << "Podaj tytul filmu: ";
    string tekst;
    cin.ignore();
    getline(cin, tekst);
    regex tyt(tekst, regex_constants::icase);

    system("CLS");

    for (int i = 0; i < A.size(); i++) {
        int j = 0;
        while (A[i].title[j] != NULL) {
            j++;
        }

        string tab(A[i].title, j);
        smatch wynik;
        if (regex_search(tab, wynik, tyt)) {

            cout <<"Znaleziony film:   " << wynik[0] << endl;
            cout << "Nr ID: " << A[i].id << endl;
            cout << A[i].desc << endl;
            cout << "Rok wydania: " << A[i].year << endl;
            cout << "Nosnik: " << A[i].type << endl;
            cout << "Na stanie: " << A[i].number_in << endl;
            cout << "Wypozyczonych: " << A[i].number_out << endl;


        }
        else {
            cout << "Brak filmu" << endl;
        }



    }

}

void Menu() {

    cout << "------------Wypozyczalnia Filmow------------" << endl;
    cout << "     Muszynski inc. All rights reserved" << endl << endl;
    cout << "><><><><><><><><><><><><><><><><><><><><><><" << endl;
    cout << "| ********** (1) Wypozycz film *********** |" << endl;
    cout << "| ********** (2) Zwroc film ************** |" << endl;
    cout << "| ********** (3) Szukaj ****************** |" << endl;
    cout << "| ********** (4) Dodaj film ************** |" << endl;
    cout << "| ********** (5) Usun film *************** |" << endl;
    cout << "| ********** (6) Edytuj film ************* |" << endl;
    cout << "| ********** (9) Zakoncz program ********* |" << endl;
    cout << "><><><><><><><><><><><><><><><><><><><><><><" << endl;

}


int main()
{
    fstream base;
    int d = 0;
    vector<movie> A;
    fstream P("id.txt", ios::in);
    if (P) {
        string linia;
        getline(P, linia);
        nr_ID = atoi(linia.c_str());
    }
    else {
        cout << "Error" << endl;
    }

    load(A);


    while (d != 9) {
        Menu();
        cin >> d;
        switch (d) {
        case 1: Wyp(A);
            break;
        case 2: Zwr(A);
            break;
        case 3: search(A);
            break;
        case 4: dodaj(A);
            break;
        case 5: usun(A);
            break;
        case 6: Edit(A);
            break;


        }

    }
    save(A);
    fstream I("id.txt", ios::out);
    I << nr_ID;

    return 0;
}