FINAL

#include<iostream>
#include<time.h>
#include<stdlib.h>
#include<stdio.h>
#include<windows.h>
#include<unistd.h>
#include<sstream>
using namespace std;

struct plane
{
    string name;
    int index;
    int fuel;
    int passengers;
    int staff_present;
    int staff_required; //Total requirement for it to be able to fly
    bool priority=false;
}priority1[10];

void bubbleSort();
void VIPPlanes();
void midWayRefuel();
void LockRunway();
void UnlockRunway();
void LandPlane(int);
int findSmallestElement();
void swaps(int,int);
void LandingProcedure();
void createtakeofflist(plane);
void staff_offload();
void printtakeoff();
void entername(int);
int enterpassengers(int i);
void enterpriority(int);
void calculatefuel(int);
void calculatestaff(int);
int enternumber();

struct plane offloading_queue[10];
int countOfIndex=0;
static int staff_available=3; //staff available on the ground ready to fly
int n;
struct plane a[10];
int landingList[10];
int refuelingList[10];
int semaphore=0;
int flag=0;
int takeoffindex=0;
int c[10];
struct plane takeoff[10];

int enternumber()
{
    string m;
    int n;
    cout<<" Enter number of planes(less than 10) arriving at the Airport: ";
    cin>>m;
    stringstream geek(m);
    geek>>n;
    if(n>=10||n==0)
     {
        cout<<"\n Invalid input. Taking default value of 1";
        return 1;
     }
     else return n;
}
void entername(int i)
{
    cout<<"\n Enter plane name for plane "<<i+1<<": ";
    cin>>a[i].name;
}
int enterpassengers(int i)
{
    string m;
    int n;
    cout<<" Enter number of passengers in plane "<<a[i].name<<": ";
    cin>>m;
    stringstream geek(m);
    geek>>n;
    if(n==0)
     {
        cout<<"\n Invalid input. Taking default value of 10"<<endl;
        return 10;
     }
     else return n;
}
void enterpriority(int i)
{
    char priority_choice;
        cout<<" Is it a VIP plane?(y/n): ";
        cin>>priority_choice;
        if(priority_choice=='y'||priority_choice=='Y')
        {
            a[i].priority=true;
        }
        else if(priority_choice=='n'||priority_choice=='N')
        {
            a[i].priority=false;
        }
        else
        {
            cout<<" Invalid Input";
        }
}
void calculatefuel(int i)
{
    a[i].fuel=(rand() % 100 + 50)%100;
    cout<<" Fuel in Plane "<<a[i].name<<": "<<a[i].fuel;
}
void calculatestaff(int i)
{
    a[i].staff_present=rand() % 10 + 3;
    cout<<endl<<" Staff present in plane "<<a[i].name<<" is: "<<a[i].staff_present<<"\n";
}
void enterdetails()
{

    n=enternumber();
    for(int i=0;i<n;i++)
    {
        entername(i);
        a[i].passengers=enterpassengers(i);
        enterpriority(i);
        calculatefuel(i);
        calculatestaff(i);
        a[i].index=countOfIndex;
        countOfIndex++;
    }
    cout<<endl;
}

int findSmallestElement()
{
       int temp = 0;
       for(int i=0; i<n; i++) {
          if(a[temp].fuel>a[i].fuel) {
             temp=i;
          }
       }
       return temp;
}

void swaps(int *xp, int *yp)
{
        int temp = *xp;
        *xp = *yp;
        *yp = temp;
}

void LandingProcedure()
{
    for(int i=0;i<n;i++)
    {
        LandPlane(a[i].index);
    }
    cout<<"\nAll aircrafts have landed successfully!"<<endl;
    Sleep(3000);
}

void bubbleSort()
{
       int i,j;
       for (i=0;i<n-1;i++)
           for (j=0;j<n-i-1;j++)
               if (a[j].fuel>a[j+1].fuel)
                  swaps(&a[j].index, &a[j+1].index);
}

void VIPPlanes()
{
        int counter=0;
        for(int i=0;i<n;i++)
        {
            if(a[i].priority==true)
            {
                swaps(&a[i].index, &a[counter].index);
                counter++;
            }
        }
}

void midWayRefuel()
{
    for(int i=0;i<n;i++)
    {
        if(a[i].fuel<10*i)
        {
            cout<<" Plane needs mid-air refueling: "<<a[i].name<<endl;
            a[i].fuel+=100;
        }
    }
}

void LockRunway()
{
    if(semaphore==0)
    {
        cout<<" Locking runway."<<endl;
        Sleep(2000);
        cout<<" Runway Locked.";
        semaphore=1;
    }
    else
        cout<<" Runway already locked.";
}

void UnlockRunway()
{
    if(semaphore==1)
    {
        cout<<" Unlocking runway."<<endl;
        Sleep(1000);
        cout<<" Runway unlocked successfully.\n";
        semaphore=0;
    }
    else
        cout<<" Runway already unlocked.";
}

void LandPlane(int index)
{
    LockRunway();
    cout<<endl;
    Sleep(1300);
    cout<<endl<<" Plane "<<a[index].name<<" has landed successfully!\n";
    UnlockRunway();
    cout<<endl;
}

void createtakeofflist(plane A)
{
    takeoff[takeoffindex]=A;
    takeoffindex++;
}

void staff_offload()
{
  cout<<"\n Starting staff & crew management!"<<endl;
  for(int i=0;i<n;i++)
  {
    cout<<endl<<endl<<" Staff shift for plane "<<a[i].name<<"!\n";

    Sleep(1500);
    cout<<endl<<endl<<" Offloading of staff begins.";
    staff_available=staff_available + a[i].staff_present;
    cout<<endl<<" Staff available on ground: "<<staff_available;
    cout<<endl<<" Offloading of staff complete.\n";
    Sleep(3000);

    int n=(rand()%2)+1;
    a[i].staff_required=a[i].staff_present + n;

    cout<<endl<<" New staff required for takeoff: "<<a[i].staff_required;
    cout<<endl<<" Staff available on ground is: "<<staff_available<<"\n";

    Sleep(3000);

    if(a[i].staff_required>staff_available)
    {
        cout<<endl<<" Complete staff no available right now, please wait!\n";
        Sleep(3000);
    }
    else
    {
        cout<<endl<<" Enough staff & crew present on ground. Good to go!";
        Sleep(3000);
        cout<<endl<<endl<<" Loading new staff & crew on plane.";
        a[i].staff_present=a[i].staff_required;
        cout<<endl<<" Staff added on board: "<<a[i].staff_present;
        cout<<endl<<" Loading staff & crew on plane complete.";
        Sleep(3000);
        staff_available=staff_available-a[i].staff_required;
        cout<<endl<<endl<<" Staff remaining present on ground: "<<staff_available;
        createtakeofflist(a[i]);
        cout<<endl<<endl<<" Plane added to takeoff list.";
        cout<<endl;
    }
  }
}

void printtakeoff()
{
    cout<<endl;
    cout<<endl<<" Take off list is as follows: ";
    for(int i=0;i<takeoffindex;i++)
    {
        Sleep(1500);
        cout<<takeoff[i].name<<" <- ";
    }
    cout<<"\n";
}

void arrangeByPassengers()
{
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<n-1;j++)
        {
            if(a[j].passengers>a[j+1].passengers)
            {
                plane t;
                t=a[j+1];
                a[j+1]=a[j];
                a[j]=t;
            }
        }
    }
}

void OffloadingAndFuel()
{
    int index=-1;
    int count=0;
    int flag[n]={0};
    for(int i=0;i<n;i++)
        c[i]=0;
        cout<<"\n Offloading passengers!"<<endl;
    do
    {
        for(int i=0;i<n;i++)
        {
            a[i].passengers-=10;
            if(flag[i]==0)
            {
                if(a[i].passengers<=0)
                {
                    flag[i]=1;
                    cout<<endl<<"Offloading: "<<a[i].name<<"   No.of bus trips: "<<c[i];
                    Sleep(2000);
                    index++;
                    offloading_queue[index]=a[i];
                    count++;
                }
                else
                {
                    c[i]++;
                }

            }
        }
    }while(count!=n);
}

void splitByPriority()
{
    int index=-1;
    for(int i=0;i<n;i++)
    {
        if(offloading_queue[i].priority==true)
        {
            index++;
            priority1[index]=a[i];
        }
    }
    for(int i=0;i<n;i++)
    {
        if(offloading_queue[i].priority==false)
        {
            index++;
            priority1[index]=a[i];
        }
    }
    cout<<"\n Starting refueling of planes!"<<endl;


    for(int i=0;i<n;i++)
    {
        //incrementing the fuel of every plane
        while(priority1[i].fuel!=150)
        {
            //incrementing till fuel doesnt reach the cap limit of 150
            priority1[i].fuel++;
        }
        cout<<endl<<"Plane "<<priority1[i].name<<" is done with refueling\n";
        Sleep(2000);
    }
    for(int i=0;i<n;i++)
    {
        a[i]=priority1[i];
    }
}

int main()
{
	srand (time(0));
    enterdetails();
    bubbleSort();
    VIPPlanes();
    midWayRefuel();
    LandingProcedure();
    arrangeByPassengers();
    OffloadingAndFuel();
    splitByPriority();
    staff_offload();
    printtakeoff();
    return 0;
}