// PostOffice.cpp

/**
 * Definition of class PostOffice. PostOffice is a class that
 * is used to represent a Post Office.
 * Mail items can be dropped into the Post Office. Each Post Office
 * is identified by the zipcode. Post Office is responsible in
 * filltering all the Mail Items and delivering them to the residents
 * or other Post Offices.
 *
 */

#include "Address.h"
#include "MailItem.h"
#include "PostalBox.h"
#include "PostOffice.h"
#include <iostream>

using namespace std;

/*
        MailItem** allMails;
        MailItem** myMails;

        int sizeAll;
        int capacityAll;
        int sizeMy;
        int capacityMy;
        string zip;

*/

// Constructor to create a Post Office identified by the zipcode
PostOffice::PostOffice(string zip)
{
   zip = "";
   sizeAll = 10;
   sizeMy = 10;
   capacityAll = 0;
   capacityMy = 0;
   for (int i = 0; i < sizeAll; i++)
   {
      allMails[i] = NULL;
      myMails[i] = NULL;
   }
}

// Collect all the mail from the Postal Box
void PostOffice::collectMail(PostalBox& box)
{
   int size;
   MailItem** tempPB = box.getMail(size);
   for (int i = 0; i < size; i++)
   {
      allMails[sizeAll++] = tempPB[i];
      tempPB[i] = NULL;
   }
   delete[] tempPB;
   tempPB = NULL;
}

// Receive a single Mail Item from a Person
void PostOffice::receiveMail(MailItem* item)
{
   allMails[sizeAll++] = item;
}

// Receive Mail from Post Office as a bulk
void PostOffice::receiveMailFromOffice(MailItem** items, int size)
{
   for (int i = 0; i < size; i++)
   {
      myMails[sizeMy++] = items[i];
      items[i] = NULL;
   }
}

// Filter all the Mail Items and send to appropriate offices
void PostOffice::filterMail()
{

}

// Deliver Mail to residents
void PostOffice::deliverMail()
{
   if (sizeMy == 0)
   {
      cout << "PostOffice is empty" << endl;
      return;
   }
   for (int i = 0; i < sizeMy; i++)
   {
//      cout << myMails[i]->output();
      cout << endl;
   }
}

// identify the Post Office
string PostOffice::getZip() const
{
   return zip;
}

// Deallocate the instance
PostOffice::~PostOffice()
{
   for (int i = 0; i < sizeMy; i++)
   {
      delete myMails[i];
   }
   delete[] myMails;
}

// Deep copy constructor
PostOffice::PostOffice(const PostOffice& other)
{

}

// Deep copy assignment operator
PostOffice& PostOffice::operator = (const PostOffice& other)
{
   if (this != &other)
   {
      for (int i = 0; i < sizeMy; i++)
      {
         delete myMails[i];
      }
      delete[] myMails;

      sizeMy = other.sizeMy;
      capacityMy = other.capacityMy;
      zip = other.zip;
      myMails = new MailItem*[capacityMy];
      for (int i = 0; i < sizeMy; i++)
      {
         myMails[i] = new MailItem(*other.myMails[i]);
      }
      for (int j = sizeMy; j < capacityMy; j++)
      {
         myMails[j] = NULL;
      }
   }
   return *this;
}

static void PostOffice::addOffice(PostOffice* office)
{
   if (numOffices == 0)
   {
      zipcodes = new string[5];
      offices = new PostOffice*[5];
   }
   offices[numOffices] = office;
   zipcodes[numOffices++] = office->getZip();
}

static void PostOffice::removeOffice(PostOffice* office)
{
   string zip = office->getZip();
   for (int i = 0; i < numOffices; i++)
   {
      if(zip == zipcodes[i])
      {
         zipcodes[i] = zipcodes[numOffices - 1];
         offices[i] = offices[numOffices - 1];
         numOffices--;
         break;
      }
   }
   if (numOffices == 0)
   {
      delete [] zipcodes;
      delete [] offices;
   }
}

void PostOffice::growAll()
{
   capacityAll = (2* capacityAll) + 1;
   MailItem** bigger = new MailItem*[capacityAll];

   for (int i = 0; i < sizeAll; i++)
   {
      bigger[i] = allMails[i];
   }
   for (int j = sizeAll; j < capacityAll; j++)
   {
      bigger[j] = NULL;
   }
   delete[] allMails;
   allMails = bigger;
}

void PostOffice::growMy()
{
   capacityMy = (2* capacityMy) + 1;
   MailItem** bigger2 = new MailItem*[capacityMy];

   for (int i = 0; i < sizeMy; i++)
   {
      bigger2[i] = myMails[i];
   }
   for (int j = sizeMy; j < capacityMy; j++)
   {
      bigger2[j] = NULL;
   }
   delete[] myMails;
   myMails = bigger2;
}


// PostOffice.h

/**
 * Declaration of class PostOffice. PostOffice is a class that
 * is used to represent a Post Office.
 * Mail items can be dropped into the Post Office. Each Post Office
 * is identified by the zipcode. Post Office is responsible in
 * filltering all the Mail Items and delivering them to the reidents
 * or other Post Offices.
 *
 */

#ifndef POST_OFFICE_H
#define POST_OFFICE_H

#include "Address.h"
#include "MailItem.h"
#include "PostalBox.h"
#include <string>
#include <iostream>

using namespace std;

class PostOffice
{
private:
        MailItem** allMails;
        MailItem** myMails;
        int sizeAll;
        int capacityAll;
        int sizeMy;
        int capacityMy;
        string zip;

        static PostOffice** offices;
        static int numOffices;
        static string* zipcodes;

        // Increase the capacity of the arrays of pointers
        void growAll();
        void growMy();

public:
        // Constructor to create a Post Office identified by the zipcode
        PostOffice(string zip);

        // Collect all the mail from the Postal Box
        void collectMail(PostalBox& box);

        // Receive a single Mail Item from a Person
        void receiveMail(MailItem* item);

        // Receive Mail from Post Office as a bulk
        void receiveMailFromOffice(MailItem** items, int size);

        // Filter all the Mail Items and send to appropriate offices
        void filterMail();

        // Deliver Mail to residents
        void deliverMail();

        // identify the Post Office
        string getZip() const;

        // Deallocate the instance
        ~PostOffice();

        // Deep copy constructor
        PostOffice(const PostOffice& other);

        // Deep copy assignment operator
        PostOffice& operator = (const PostOffice& other);

        static void addOffice(PostOffice* office);

        static void removeOffice(PostOffice* office);

};

PostOffice** PostOffice::offices = NULL;
int PostOffice::numOffices = 0;
string* PostOffice::zipcodes = NULL;

#endif