DSA Int Main(2)

#include <iostream>
#include <iomanip>
#include <stdlib.h> //for exit() function
#include <fstream>  //for creating text file
using namespace std;

int total = 0;

class Reservation{
private:
    string name;
    int phoneNo;
    int paxNo;
    int day;
    int month;
    int year;
    int time;
    int date;
    long dateAndTime;
public:
    Reservation(){
        name = "Tan Phit Huan";
        phoneNo = 0123456777;
        paxNo = 1;
        day = 1;
        month = 1;
        year = 2019;
        time = 1500;
        date = 20190101;
        dateAndTime = 201910201649;
    }
    Reservation(string na, int phNo, int pxNo, int d, int mon, int y, int t,int da, long dNt){
        name = na;
        phoneNo = phNo;
        paxNo = pxNo;
        day = d;
        month = mon;
        year = y;
        time = t;
        date = da;
        dateAndTime =dNt;
    }
    void setName(string na){
        name = na;
    }
    string getName(){
        return name;
    }
    void setPhoneNo(int phNo){
        phoneNo = phNo;
    }
    int getPhoneNo(){
        return phoneNo;
    }
    void setPaxNo(int pxNo){
        paxNo = pxNo;
    }
    int getPaxNo(){
        return paxNo;
    }
    void setDay(int d){
        day = d;
    }
    int getDay(){
        return day;
    }
    void setMonth(int m){
        month = m;
    }
    int getMonth(){
        return month;
    }
    void setYear(int y){
        year = y;
    }
    int getYear(){
        return year;
    }
    void setTime(int t){
        time = t;
    }
    int getTime(){
        return time;
    }
    void setDate(int da){
        date = da;
    }
    int getDate(){
        return date;
    }
    void setDateAndTime(long dNt){
      dateAndTime = dNt;
    }
    long getDateAndTime(){
      return dateAndTime;
    }
};

class linklist{
private:
  struct node{
    Reservation info;
    node *link;
  }*head;

public:
  linklist(){
    head=NULL;
  }

  void InsNewNode(string na, int phNo, int pxNo, int d, int mon, int y, int t, long dNt){
    node*newNode = new node;
    node*p,*q = head;
    newNode -> info.setName(na);
    newNode -> info.setPhoneNo(phNo);
    newNode -> info.setPaxNo(pxNo);
    newNode -> info.setDay(d);
    newNode -> info.setMonth(mon);
    newNode -> info.setYear(y);
    newNode -> info.setTime(t);
    newNode -> info.setDateAndTime(dNt);

    //If no records
    if (head == NULL){
      head = newNode;
      return;
    }

    //Insert at the start of list
    if (head -> info.getDateAndTime() > newNode -> info.getDateAndTime()){
      newNode -> link = head;
      head = newNode;
      return;
    }

    while(q->info.getDateAndTime() < newNode -> info.getDateAndTime() && q->link != NULL){
      p = q;
      q = q->link;
    }
    //Insert at the end of the list
    if(q == NULL){
      q = newNode;
      newNode-> link = NULL;
      return;
    //Insert in the middle of the list
    }else{
      p = q;
      q = q->link;
      p->link = newNode;
      newNode-> link = q;
      return;
    }
  }

  void deleteNode(int num){
    //Delete first node
    if(num == 1){
      node*temp = head;
      head = head -> link;
      delete temp;
    }
    //Delete last node
    else if(num == total && total != 1){
      node*p, *q = head;
      while(q -> link != NULL){
        p = q;
        q = q -> link;
      }
      p->link = NULL;
      delete q;
    }
    //Delete nodes in the middle
    else{
      node*p, *q = head;
      for(int i = 1; i<num; i++){
        p = q;
        q = q -> link;
      }
      p -> link = q ->link;
      delete q;
    }
    total--;
  }
  void PrintList(){
    node *current;
    current = head;
    int count = 0;
    cout<<setfill(' ')<<setw(5)<<"| No. "
    <<left<<setw(30)<<"Name"
    <<setw(5)<<"Phone No."
    <<right<<setw(16)<<"Pax No."
    <<setw(10)<<"Date"
    <<setw(16)<<"Time |"<<endl
    <<"|"<<right<<setfill('=')<<setw(86)<<"|"<<endl;

    while (current != NULL){
      count++;
      cout<<"| "<<setfill(' ')<<count<<"   "
      <<left<<setw(30)<< current->info.getName()
      <<right<<setw(10)<<setfill('0')<< current->info.getPhoneNo()
      <<setw(12)<<setfill(' ')<< current->info.getPaxNo()<<setw(6)<<setfill(' ')<<" "
      <<setw(2)<<setfill('0')<< current->info.getDay() <<"/"<<setw(2)<<setfill('0')<< current->info.getMonth() <<"/"<<setw(4)<<setfill('0')<< current->info.getYear()<<setw(7)<<setfill(' ')<<" "
      <<setw(4)<<setfill('0')<< current->info.getTime() <<" |"<<endl;
      current = current->link;
    }
    cout<<endl;
  }

  void PrintNameRecords(string name){
    node *current;
    current = head;
    int count = 0;
    cout<<setfill(' ')<<setw(5)<<"| No. "
    <<left<<setw(30)<<"Name"
    <<setw(5)<<"Phone No."
    <<right<<setw(16)<<"Pax No."
    <<setw(10)<<"Date"
    <<setw(16)<<"Time |"<<endl
    <<"|"<<right<<setfill('=')<<setw(86)<<"|"<<endl;

    while (current != NULL){
      //If there is any reservation with the same name
      if(name == current->info.getName()){
        count++;
        cout<<"| "<<setfill(' ')<<count<<"   "
        <<left<<setw(30)<< current->info.getName()
        <<right<<setw(10)<<setfill('0')<< current->info.getPhoneNo()
        <<setw(12)<<setfill(' ')<< current->info.getPaxNo()<<setw(6)<<setfill(' ')<<" "
        <<setw(2)<<setfill('0')<< current->info.getDay() <<"/"<<setw(2)<<setfill('0')<< current->info.getMonth() <<"/"<<setw(4)<<setfill('0')<< current->info.getYear()<<setw(7)<<setfill(' ')<<" "
        <<setw(4)<<setfill('0')<< current->info.getTime() <<" |"<<endl;
      }
      current = current->link;
    }
    cout<<endl;
  }

  void PrintDateRecords(int date){
    node *current;
    current = head;
    int count = 0;
    cout<<setfill(' ')<<setw(5)<<"| No. "
    <<left<<setw(30)<<"Name"
    <<setw(5)<<"Phone No."
    <<right<<setw(16)<<"Pax No."
    <<setw(10)<<"Date"
    <<setw(16)<<"Time |"<<endl
    <<"|"<<right<<setfill('=')<<setw(86)<<"|"<<endl;

    while (current != NULL){
      //If there is any reservation with the same date
      if(date == current->info.getDate()){
        count++;
        cout<<"| "<<setfill(' ')<<count<<"   "
        <<left<<setw(30)<< current->info.getName()
        <<right<<setw(10)<<setfill('0')<< current->info.getPhoneNo()
        <<setw(12)<<setfill(' ')<< current->info.getPaxNo()<<setw(6)<<setfill(' ')<<" "
        <<setw(2)<<setfill('0')<< current->info.getDay() <<"/"<<setw(2)<<setfill('0')<< current->info.getMonth() <<"/"<<setw(4)<<setfill('0')<< current->info.getYear()<<setw(7)<<setfill(' ')<<" "
        <<setw(4)<<setfill('0')<< current->info.getTime() <<" |"<<endl;
      }
      current = current->link;
    }
    cout<<endl;
  }

  void PrintListTextFile(){
    string fileName;
    int count = 0;
    cout << "---------------=CREATE TEXT FILE=---------------" << endl;
    //Create file with the file name user entered
    cout << "Enter file name: ";
    cin >> fileName;
    cout << "Your .txt file can be found in the same folder where your .cpp file is saved." << endl;
    fileName = fileName + ".txt";

    //output to .txt file
    ofstream file(fileName.c_str());

    if (file.is_open()) {
      //output all the reservation records
      node *current;
      current = head;
      file<<setfill(' ')<<setw(5)<<"| No. "
      <<left<<setw(30)<<"Name"
      <<setw(5)<<"Phone No."
      <<right<<setw(16)<<"Pax No."
      <<setw(10)<<"Date"
      <<setw(16)<<"Time |"<<endl
      <<"|"<<right<<setfill('=')<<setw(86)<<"|"<<endl;

      while (current != NULL){
        count++;
        file<<"| "<<setfill(' ')<<count<<"   "
        <<left<<setw(30)<< current->info.getName()
        <<right<<setw(10)<<setfill('0')<< current->info.getPhoneNo()
        <<setw(12)<<setfill(' ')<< current->info.getPaxNo()<<setw(6)<<setfill(' ')<<" "
        <<setw(2)<<setfill('0')<< current->info.getDay() <<"/"<<setw(2)<<setfill('0')<< current->info.getMonth() <<"/"<<setw(4)<<setfill('0')<< current->info.getYear()<<setw(7)<<setfill(' ')<<" "
        <<setw(4)<<setfill('0')<< current->info.getTime() <<" |"<<endl;
        current = current->link;
      }
      file.close(); //close file
    }
  }
  // ~linklist(){
  //     node *q;
  //     if(head == NULL){
  //         return;
  //     }
  //     while( head != NULL ){
  //         q = head->link;
  //         delete head;
  //         head = q;
  //     }
  // }
};

linklist RList;
void addRecord();
void updateRecord();
void deleteRecord();
void viewRecord();  //1. select by name. 2. Display all
void createTextFile();

int main() {
  int choice;
  cout << "===============RESTAURANT RESERVATION SYSTEM===============" << endl;
  cout << "Please enter your selection" << endl <<
    "1. Add Reservation Records" << endl <<
    "2. Update Reservation Records" << endl <<
    "3. Delete Reservation Records" << endl <<
    "4. View Reservation Records  " << endl <<
    "5. Create text file" << endl <<
    "6. Exit" << endl;

  cout << "Choice: ";
  cin >> choice;
  cin.clear();
  cin.ignore(1, '\n');
  system("CLS");

  switch (choice) {
  //Add Records
  case 1:
    addRecord();
    break;

  //Update Records
  case 2:
    if (total == 0) {
      cout << "No reservation records available." << endl;
      main();
    }
    updateRecord();

    break;

  //Delete Records
  case 3:
    if (total == 0) {
      cout << "No reservation records available." << endl;
      main();
    }
    deleteRecord();

    break;

  //View Reservation Records
  case 4:
    if (total == 0) {
      cout << "No reservation records available." << endl;
      main();
    }
    viewRecord();
    break;

  //Create Text File
  case 5:
    if (total == 0) {
      cout << "No reservation records available." << endl;
      main();
    }
    createTextFile();
    break;

  case 6:
    exit(1);
    break;

  default:
    cout << choice << " is not valid choice" << endl;
    main();
  }

  return 0;
}

//OPTION 1 : Add Reservation Records
void addRecord(){
  string name;
  int phoneNo, paxNo, day, month, year, time;
  long dateAndTime;
  cout << "-----------------=ADD RECORD=-------------------" << endl;
  cout<<"Enter name : ";
  getline(cin, name);

  cout<<"Enter phone No. (e.g : 0123456789) : ";
  cin>>phoneNo;

  cout<<"Enter pax No. : ";
  cin>>paxNo;

  cout<<"Enter year (e.g : 2019) : ";
  cin>>year;

  cout<<"Enter month (e.g : January = 1) : ";
  cin>>month;

  cout<<"Enter day : ";
  cin>>day;

  cout<<"Enter time in 24hr format (e.g : 3.30pm = 1530) : ";
  cin>>time;

  //for inserting the node in order
  dateAndTime = year*100000000 + month*1000000 + day*10000 + time;

  RList.InsNewNode(name, phoneNo, paxNo, day, month, year, time, dateAndTime);
  total++;
  cin.clear();
  cin.ignore(1000, '\n');
  cout << "Press enter to continue . . .";
  getchar();
  system("CLS");
  main();
}

//OPTION 2 : Update Reservation Records
void updateRecord(){
  cout << "----------------=UPDATE RECORD=-----------------" << endl;
}

//OPTION 3 : Delete Reservation Records
void deleteRecord(){
  int num;
  bool correct;
  cout << "----------------=DELETE RECORD=-----------------" << endl;
  RList.PrintList();
  do{
    correct = true;
    cout<<"(Enter 0 to go back to Main Menu)"<<endl
    <<"Enter the No. you wish to delete : ";
    cin>>num;
    //if more than total reservations or negative number
    if(num > total || num < 0){
      cout<<endl
      <<"INVALID INPUT!"<<endl
      <<"Total Reservations : "<<total<<endl;
      correct = false;
    }else if(num == 0){
      main();
    }else{
      RList.deleteNode(num);
    }
  }while(!correct);

  cin.clear();
  cin.ignore(1000, '\n');
  cout << "Press enter to continue . . .";
  getchar();
  system("CLS");
  main();
}

//OPTION 4 : View Reservation Records
void viewRecord(){
  int choice;
  string name;
  int year, month, day, date;
  cout << "-----------------=VIEW RECORD=------------------" << endl;
  cout << "Please enter your selection" << endl <<
  "1. View All Reservations" << endl <<
  "2. Search by Name" << endl<<
  "3. Search by Date"<<endl<<
  "4. Back to Main Menu"<<endl;
  cout << "Choice: ";
  cin >> choice;
  cin.clear();
  cin.ignore(1, '\n');
  system("CLS");

  switch (choice) {
  //View All Reservations
  case 1:
    RList.PrintList();
    break;

  //Search by Name
  case 2:
    cout<<"Enter Name : ";
    getline(cin, name);

    RList.PrintNameRecords(name);

    break;

  case 3:
    cout<<"Enter year (e.g : 2019) : ";
    cin>>year;

    cout<<"Enter month (e.g : January = 1) : ";
    cin>>month;

    cout<<"Enter day : ";
    cin>>day;

    date = year*10000 + month*100 + day;


    break;

  case 4:
    main();
    break;

  default:
    cout << choice << " is not valid choice" << endl;
    main();
  }

  cout << "Press enter to continue . . .";
  getchar();
  system("CLS");
  main();
}

//OPTION 5 : Create Text File
void createTextFile(){
  RList.PrintListTextFile();
  getchar();
  cout << "-----------------------------------------------------" << endl;

  cout << "Press enter to continue . . .";
  cin.clear();
  cin.ignore(1000, '\n');
  system("CLS");
  main();
}