main.cpp

#include <iostream>
#include <string>
#include <vector>
#include <fstream>
#include <sstream>
#include <unistd.h>

using namespace std;

// Only one show per day and booking can be done for next day only

class Theatre {
    private:
       string TheatreName;
       int seats[20];
       vector <int> seatno; // check initilization
       int vacantseats;
    public:
        Theatre(){}
        Theatre(string strTheatre):TheatreName(strTheatre), seats{0},seatno(0),vacantseats(0) {}
        
        string GetTName() {
            return TheatreName;
        } 
        int* Getseats () {
          return seats;
        } 
        int CheckSeatAvailability(); 
        bool BookTicket(int numOfTikets, vector <int> seatno);                     
};

class Movies {
    private:
       string MovieName;
       vector <Theatre*> theatre;
    public:
        Movies() {}
        Movies(string strMveName, vector<Theatre *> vPtrTheatreList)
    	{
    		MovieName= strMveName;
    		theatre = vPtrTheatreList;
    	}
        vector <string> GetTheatrelist();
        vector <Theatre*> GetTheatrePointer () {
            return theatre;
        }
        string GetMName(){
               return MovieName;
        } 
        ~Movies() {
            //for (int i = 0; i < theatre.size(); i++) {
                //cout << "destructor deleting theatre" << endl;
                //delete theatre[i];
           // }
        }                 
}; 

class Services {
    private:
        vector <Movies*> movies;
        int movieid;
        int theatreid;
    public:
        int pushMovies(Movies *obj)
        {
            movies.push_back(obj);
            return 0;
        }
        int ListTheatre();
        int ListMovies();
        int ShowSeatInfo(); 
        ~Services ()
        { 
            for (int i = 0; i < movies.size(); i++) {
               // cout << "destructor deleting movies" << endl;
                delete movies[i];
            }
        }             
};


vector <string> Movies::GetTheatrelist(){
    int n;
    vector <string> Tlist;
    vector <Theatre*> Tobj;

    Tobj = GetTheatrePointer();
    n = Tobj.size();
    // cout << "theatrelist" << n;
    for (int i = 0; i < n; i++) {
       // cout << "list theatre" << theatre[i]->GetTName() << endl;
        Tlist.push_back(theatre[i]->GetTName()); 
    }
    return Tlist;
}

int Theatre:: CheckSeatAvailability () {
    int emptyseats = 0;
    for(int i = 0;  i < 20; i++) {
        if (seats[i] == 0)
           emptyseats += 1;
    }
    vacantseats = emptyseats;
    return vacantseats;
}

bool Theatre:: BookTicket (int NumofTickets, vector <int> seatno) {

    for(int i = 0;  i < NumofTickets; i++)
           seats[seatno[i]] = 1; 
    return true;
}

int Services::ListMovies() {
    int n, ret = 0;

    n = movies.size();  
    //cout << "n =" << n << endl;
    if (n == 0) {
        cout << "\n\t No movies updated Movie" << endl;
        return 0;
    }
    cout << "Please select a Movie " << endl << endl;
    
    for (int i = 0; i < n; i++) {
        cout << i+1 << "\t" << movies[i]->GetMName() << endl;
    }
    cout << "Press any above number to selcet a Movie" << endl;
    cout << "To quit press 0" << endl;
    cin >> movieid;
    if (movieid > n || movieid == 0) {
       ret = 0;
       cout << "Invalid movie selection" << endl;
    } else if(isdigit(movieid))
       ret = 0;
    else
       ret = 1;

    return ret;       
}

int Services::ListTheatre() {
    int ret = 0, n;
    vector <string> list;

    cout << "Please select Theatre" << endl << endl;
    list = movies[movieid -1]->GetTheatrelist();
    n = list.size();
    //cout << "n =" << n << endl;
    if( n == 0)
       return 0;
    for(int j = 0;j < n; j++)
       cout << j+1 << "\t" << list[j] << endl;
    cout << endl;
    cout << "Press any above number to selcet a Theatre" << endl;
    cout << "To quit press 0" << endl;
    cin >> theatreid;
    if (theatreid == 0 || theatreid > n) {
        cout << "Invalid movie selection : quits" << endl;
       ret = 0;
    } else
       ret = 1;
    return ret;
}

int Services:: ShowSeatInfo () {
        int availtickets, seats, blocktickets;
        char proceed, proceed1;
        bool result;
        int *seatarray;
        vector <int> vectorseats;
        vector <int> tempseats;
        vector <Theatre*> Tobject;

        Tobject = movies[movieid-1]->GetTheatrePointer();
        availtickets = Tobject[theatreid-1]->CheckSeatAvailability();
        cout << endl;

        do {
            proceed = ' ';
            cout << availtickets << " no of tickets are available" << endl;
            cout << "Please enter Number of tickets to book " << endl;
            cin >> blocktickets;
            if (blocktickets > availtickets) {
                cout << blocktickets <<" Tickets are not available" <<  endl;
                cout << "Do you want to continue y/n ?" << endl;
                cin >> proceed;
            }
        } while ((proceed=='y') || (proceed=='Y'));
        
        cout << "\n\t Avaiable seats" << endl << endl;
        seatarray = Tobject[theatreid-1]->Getseats();
        for(int i = 0;  i < 20; i++) {
            if (seatarray[i] == 0) {
                cout << "\t" << i+1 ;    
            } else 
                  cout << '\t' << 'X';
            if (i % 2)
                  cout << '\n';        
        }

        do {
            proceed1 = ' ';
            cout << "\nPlease select your (" << blocktickets << ") seats " << endl;
            tempseats.clear();
            for(int j = 0 ; j < blocktickets; j++) {
                cin >> seats;
                tempseats.push_back(seats);
            }
            for (int j = 0 ; j < blocktickets; j++) { 
                    if( seatarray[tempseats[j] - 1] == 0) {
                        vectorseats.push_back(tempseats[j]- 1);
                    } else {
                      cout << "The selected seat is not available . Please try again !" << endl;
                      cout << "Do you want to continue y/n ?" << endl;
                      cin >> proceed1;
                    }
                }
        } while ((proceed1 == 'y') || (proceed1 == 'Y'));

        cout << "Booking " << blocktickets << " Tickets for " << movies[movieid -1]->GetMName() << " in " << Tobject[theatreid-1]->GetTName() << endl; 
        result = Tobject[theatreid - 1]->BookTicket(blocktickets,vectorseats);
        if(result == true)
           return 1;
return 0;
}

int main()
{
    Services Book;
    
    static int trial = 0;
    vector <Theatre*> vTheatreObjlist;
    vector <Theatre *> vObjTheatre;
    vector <string> vTheatreNameList;
    string strTheatrename = " ";
    string strMoviename = " ";
    string strName = " ";


    if (trial == 0) {
        fstream Tfile, Mfile;
        Tfile.open("database1.csv",ios::in);
        if(!Tfile) {
            cout << "Database error" << endl; // verified
            Tfile.close();
            return 0;
        } else {     
                while( getline(Tfile, strTheatrename,',')) {
                        Theatre *Tobj =  new Theatre(strTheatrename);
                        vTheatreObjlist.push_back(Tobj);
                        //cout << "next loop "<< strTheatrename << endl;
                }
        } 
        Mfile.open("database.csv",ios::in);
        if(!Mfile) {
            cout << "Database error" << endl; // verified
            Mfile.close();
            return 0;   
        } else {       
                while( getline(Mfile, strName)) {
                        int s = 0;
                        vTheatreNameList.clear();
                        vObjTheatre.clear();
                        strMoviename = " ";
                        stringstream stringfile(strName) ;
                        while( getline(stringfile, strName,',')) { 
                             if(s == 0) {
                                strMoviename = strName;
                                s = 1;
                             } else {
                                 //cout << "Theatre " << strName << endl;
                                 vTheatreNameList.push_back(strName);
                             }
                        }
                        for(int i = 0; i < vTheatreNameList.size(); i++) {
                            for(int j = 0; j < vTheatreObjlist.size(); j++) {
                                if(vTheatreObjlist[j]->GetTName() == vTheatreNameList[i]) {
                                 //cout << " list from main " << vTheatreNameList[i] << endl; 
                                 vObjTheatre.push_back(vTheatreObjlist[j]);
                                }
                            }
                        }
                Movies *ptrMovieObj = new Movies(strMoviename, vObjTheatre);
                //cout << "Movie " << strMoviename << endl; 
                Book.pushMovies(ptrMovieObj);
              } 
        }                             
        Mfile.close();
        Tfile.close();
        trial = 1;
    }  
    while (1) {
        if (Book.ListMovies()) {
           if (Book.ListTheatre()) {
               if (Book.ShowSeatInfo()) {
                    cout<<"\n\n Tickets has been succcesfully booked for you !!!" ;
                    cout<<"\n\n THANK YOU !!!\n\n"; 
               } else 
                cout << "\n\n Booking failed Please try again !!!";
           } else
                break;
        } else 
            break;     
        sleep(5);
    }
    
    cout << "\nTHANK YOU !!!" << endl;   
    return 0;
}