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//Miletic Marko
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//41367
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//Vjezba 5
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//Vjezba 6
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#include <iostream>

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#include <fstream>

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#include <cstdlib>

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#include <ctime>

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#include "biblioteka_vrijeme_i_binarno_pretrazivanje.cc"

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using namespace std;

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struct tRoba {

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    int sifra;

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    char naziv[50];

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    float cij, kol;

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    float vrj_unosa;

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};

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tindeks indeks;

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int si = sizeof(tindeks);

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tRoba roba;

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int sr = sizeof(tRoba);

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void mog1() {

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    fstream dat("roba_Miletic_Marko.dat", ios::in|ios::binary);

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    char dn='n';

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    int ne=0;

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    if(!dat) dat.open("roba_Miletic_Marko.dat", ios::out|ios::binary);

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    else ne=1;

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    if(ne) cout<<"Rad s postojecom datotekom? (d=rad s postojecom,  n=brisanje): ";

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    if(ne) cin>>dn;

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    if(ne && dn=='n')

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       for(dat.close(), dat.clear(), dat.open("roba_Miletic_Marko.dat", ios::out|ios::binary); 0; )

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           dn='n';

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    fstream ind("roba_Miletic_Marko.ind", ios::in|ios::binary);

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    if(!ind) ind.open("roba_Miletic_Marko.ind", ios::out|ios::binary);

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    else if(dn=='n')

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        for(ind.close(), ind.clear(), ind.open("roba_Miletic_Marko.ind", ios::out|ios::binary); 0;)

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          dn='n';

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    dat.close();

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    dat.clear();

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    ind.close();

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    ind.clear();

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    dat.open("roba_Miletic_Marko.dat", ios::in|ios::out|ios::binary|ios::ate);

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    ind.open("roba_Miletic_Marko.ind", ios::in|ios::out|ios::binary|ios::ate);

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    tRoba nova;

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    int a;

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    int sif=1;

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    while(sif)

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        for(sif=1, a=1, vrijeme_pocetak(), cout << "Sifra: ", cin >> nova.sifra, cout << "Naziv: ", cin.ignore(), cin.getline(nova.naziv, 50), cout << "Cijena: ", cin >> nova.cij, cout << "Kolicina: ", cin >> nova.kol; a; a=0)

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            if(nova.sifra>99 && nova.sifra<1000) sif=0;

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            else cout<<"!! Sifra(100-999). Ponovni unos.."<<endl;

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    vrijeme_kraj();

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    cout << "Proteklo vrijeme: " << (nova.vrj_unosa = vrijeme_proteklo() ) << endl;

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    tindeks novi_;

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    novi_.kljuc = nova.sifra;

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    novi_.adresa = (int)dat.tellp();

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    dat.write((char*)&nova, sr);

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    ind.seekg(0, ios::end);

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    int i;

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    int broj_zapisa=(int)ind.tellg()/si;

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    int br=1;

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    for(i=broj_zapisa-1; i>=0 && br; br?i--:i)

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        for(ind.seekg(i*si, ios::beg), ind.read( (char*)&indeks, si), ind.seekp((i+1)*si, ios::beg), ind.write((char*)&indeks, si), a=1; a; a=0)

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            if(indeks.kljuc<novi_.kljuc)

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                 br=0;

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    if(i<0) ind.seekp(0, ios::beg);

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    else ind.seekp((i+1)*si, ios::beg);

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    ind.write((char*)&novi_, si);

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    ind.seekg(0, ios::beg);

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    for(int i=0; i<=broj_zapisa; cout<<"sifra: " << indeks.kljuc<<endl<<"adresa: " << indeks.adresa << endl<<endl, i++)

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        ind.read((char*)&indeks, si);

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    dat.close();

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    dat.clear();

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    ind.close();

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    ind.clear();

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}

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void mog2() {

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    fstream dat("roba_Miletic_Marko.dat", ios::in|ios::binary);

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    if(!dat) cout << "Maticna datoteka ne postoji." << endl;

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    if(!dat) return;

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    fstream ind("roba_Miletic_Marko.ind", ios::in|ios::binary);

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    if(!ind) cout<<"ind ne postoji"<<endl;

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    if(!ind) dat.close();

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    if(!ind) dat.clear();

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    if(!ind) return;

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    dat.seekg(0, ios::end);

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    int mat_br_zapisa = dat.tellg() / sizeof(tRoba);

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    cout << "Broj zapisa: " << mat_br_zapisa << endl;

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    int sifra;

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    cout << "Sifra robe: ";

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    cin >> sifra;

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    int l=0;

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    int d=mat_br_zapisa-1;

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    bool nadjen = false;

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    int br_proc = 0;

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    while(!nadjen)

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        if(l<=d) {

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            ind.seekg((d+l)/2*si, ios::beg);

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            ind.read((char*)&indeks, si);

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            br_proc++;

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            if(sifra>indeks.kljuc) l=(d+l)/2+1;

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            else if(sifra<indeks.kljuc) d=(d+l)/2-1;

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            else nadjen = true;

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        } else break;

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    if(!nadjen) cout<<"Zapis nije pronadjen."<<endl<<"Broj procitanih zapisa: "<<br_proc<<endl;

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    if(!nadjen)

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        for(dat.close(), dat.clear(), ind.close(), ind.clear(); 1; )

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            return;

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    cout << "Zapis je pronadjen." << endl << "Broj procitanih zapisa: " << br_proc << endl;

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    cout << endl << "sifra: " << indeks.kljuc << endl << "adresa: " << indeks.adresa << endl << endl;

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    dat.seekg(indeks.adresa, ios::beg);

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    dat.read( (char*)&roba, sr);

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    cout << "sifra: " << roba.sifra << endl

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        << "naziv: " << roba.naziv << endl

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        << "cijena: " << roba.cij << endl

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        << "kolicina: " << roba.kol << endl

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        << "vrijeme unosa: " << roba.vrj_unosa << endl << endl;

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    dat.close();

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    dat.clear();

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    ind.close();

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    ind.clear();

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}

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void mog3() {

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    char mat_naziv[75];

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    cin.ignore();

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    cout << "Naziv maticne datoteke: ";

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    cin.getline(mat_naziv, 75);

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    fstream dat(mat_naziv, ios::in|ios::binary);

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    if(!dat) cout<<"Maticna datoteka ne postoji."<<endl;

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    if(!dat) return;

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    fstream ind("roba_Miletic_Marko.ind", ios::in|ios::binary);

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    if(!ind) cout<<"Indeksna datoteka ne postoji."<<endl;

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    if(!ind) dat.close();

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    if(!ind) dat.clear();

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    if(!ind) return;

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    double vrijed_uk=0;

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    double vrj_uk=0;

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    while(1) {

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        ind.read((char*)&indeks, si);

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        if(ind.eof() ) break;

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        dat.seekg(indeks.adresa,ios::beg);

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        dat.read((char*)&roba,sr);

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        vrijed_uk+=(roba.cij*roba.kol);

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        vrj_uk+=roba.vrj_unosa;

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        cout << "sifra: " << roba.sifra << endl << "naziv: " << roba.naziv << endl << "cijena: " << roba.cij

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             << endl << "kolicina: " << roba.kol << endl << "vrijeme unosa: " << roba.vrj_unosa << endl << endl;

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    }

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    cout << "Ukupna vrijednost robe: " << vrijed_uk << endl << "Ukupno vrijeme unosa: " << vrj_uk << endl;

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    dat.close();

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    dat.clear();

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    ind.close();

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    ind.clear();

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}

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int main() {

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    srand(time(0) );

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    rand();

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    int x;

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    do {

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        cout << endl << " -- < Izbornik > -- " << endl

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        << " 1. Rucni unos podataka o robi u indeksiranu datoteku" << endl

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		<< " 2. Pretrazivanje indeksirane datoteke prema sifri robe" << endl

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		<< " 3. Ispis sadrzaja maticne datoteke u redoslijedu sifre robe" << endl

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		<< " 4. Generiranje zapisa o robi (sa sortiranjem indeksa)" << endl

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		<< " 9. Izlaz iz programa" << endl << "Odabir: ";

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        cin >> x;

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        switch(x){

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            case 1: mog1(); break;

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            case 2: mog2(); break;

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            case 3: mog3(); break;

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        }

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    } while(x!=9);

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    return 0;

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}
        

    


            


                                


        

            



                
    

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