#include "database.h"

#include <fstream>

using std::ofstream;
using std::ifstream;

#include <sstream>

using std::string;
using std::istringstream;

#include <assert.h>

#include <iostream>

using std::cout;
using std::ios;

database::database()
{	
	ifstream instudents( "students.data", ios::in );
	ifstream initems( "items.data", ios::in );
	int n = 0;
	string buffer = "";

	getline(instudents, buffer);
	while(!instudents.eof())
	{
		string	name, phone, email, street, aptnum, city, state, other, zippy, temp;
		int		zip = 0;
	
		
		while( buffer != "@@" && buffer != "\n" && !instudents.eof() )
		{
			if(buffer == "@Name:")
				getline(instudents, name);
			else if(buffer == "@Phone Number:")
				getline(instudents, phone);
			else if(buffer == "@E-mail:")
				getline(instudents, email);
			else if(buffer == "@Address Line 1:")
                    getline(instudents, street);
			else if(buffer == "@Address Line 2:")
					getline(instudents, aptnum);
			else if(buffer == "@City:")
				getline(instudents, city);
			else if(buffer == "@State:")
				getline(instudents, state);
			else if(buffer == "@Zipcode:")
			{
				getline(instudents, zippy);
				istringstream zipper(zippy);
				zipper >> zip;
			}
			else if(buffer == "@Other:")
				getline(instudents, other);
			getline(instudents, buffer);
		}

        student newstudent(name, phone, email, street, aptnum, city, state, zip, other);		
		addstudent(n, newstudent);
		n++;

		getline(instudents, buffer);
	}

	/*student blanks;
	for( int i = n; i < 100; i++)
		addstudent(i, blanks);*/

	getline(initems, buffer);
	while(!initems.eof())
	{
		string	buffer, name, type, author, owner, status, pricey, temp;
		char temp1;
		double	price = -9999;

		while( buffer != "@@" && buffer != "\n" && !initems.eof())
		{
			if(buffer == "@Item:")
				getline(initems, name);
			else if(buffer == "@Media Type:")
				getline(initems, type);
			else if(buffer == "@by:")
				getline(initems, author);
			else if(buffer == "@Owner:")
				getline(initems, owner);
			else if(buffer == "@Availability:")
				getline(initems, status);
			else if(buffer == "@Price:")
			{
				getline(initems, pricey);
				istringstream pricer(pricey);
				pricer >> temp1 >> price;
			}
			getline(initems, buffer);
		}

        multimedia newitem(name, type, author, owner, price, status);		
		additem(n, newitem);
		n++;			
		getline(initems, buffer);
	}
	//multimedia blanki;
	//for(int i = n; i < 100; i++)
	//		additem(i, blanki);
	instudents.close();
	initems.close();
}

bool database::additem( int index, multimedia& item )	//adds an item to the items array at index
{
	if(item.getowner() == "")
		return false;
	if(findstudent(item.getowner()) == -1)
		return false;
	int n = findblankitem();
	if(n == -1)
		return false;
	assert(n<100&&n>-1);
	items[n] = item;
	return true;
}

bool database::addstudent( int index, student& newstudent)//adds an student to the students array at index
{
	if(newstudent.getemail() == "")
		return false;
	int n = findblankstudent();
	assert(n<100&&n>-1);
	students[n] = newstudent;
	return true;
}

void database::printstudents( ofstream& out ) const					//prints a list of students to the output file
{
	for(int n = 0; n < 100; n++)
	{
		if(students[n].getemail() != "")
		{
			assert(n<100&&n>-1);
			students[n].print(out);
			out << "\n";
		}
	}
}

void database::printitems( ofstream& out ) const						//prints a list of items to the output file
{
	for(int n = 0; n < 100; n++)
	{
		if(items[n].getowner() != "")
		{
			assert(n<100&&n>-1);
			items[n].print(out, true);
			out << "\n";
		}
	}
}

bool database::printemail( string email, ofstream& out ) const			//prints a student and all its corresponding items to the output file
{
	int i = findstudent(email);
	if(i == -1)
			return false;
	assert(i<100&&i>-1);
	students[i].print(out);
	out << "\n";
	for(int n = 0; n < 100; n++)
	{
		if(items[n].getowner() == email)
		{
			assert(n<100&&n>-1);
			items[n].print(out, false);
			out << "\n";
		}
	}
	return true;
}

bool database::deletestudent( string email )		//deletes a student with email and all its items
{
	int i = findstudent(email);
	if(i == -1)
		return false;
	assert(i<100&&i>-1);
	student blanks;
	students[i]=blanks;

	multimedia blanki;
	for(int n = 0; n < 100; n++)
	{
		if(items[n].getowner() == email)
		{
			assert(n<100&&n>-1);
			items[n]=blanki;
		}
	}
	return true;
}

int database::findstudent( string email ) const			//finds a student with email and returns its index
{
	for(int n = 0; n < 100; n++)
		if(students[n].getemail() == email)
			return n;
	return -1;
}

int database::findblankstudent( ) const					//finds the first blank location and returns its index
{
	return findstudent("");
}

int database::findblankitem( ) const					//finds the first blank location and returns its index{}
{
	for(int n = 0; n < 100; n++)
		if(items[n].getowner() == "")
			return n;
	return -1;
}