//  Project II for CS 1704 Spring 2004
//
//  Programmer:    Kyle Loder
//  OS:            Windows XP Professional
//  System:        Pentium IV 2.6 GHz, 512 MB Memory
//  Compiler:      Visual Studio .NET 2003
//  Last modified: February 23rd, 2004
//
//  Purpose
//  Implementation of the mediaLibrary class
//

#include "mediaLibrary.h"

//////////////////////////////////////////////////////////////// mediaLibrary constructor
// declares a blank instance of the mediaLibrary class
//
// Parameters: none
//   
// Pre: used as a constructor
//
// Post: instance of the mediaLibrary type declared
//
// Returns: none
//
// Called by: main
// Calls: none 
//
mediaLibrary::mediaLibrary () {
	numStudents = 0;
	numItems = 0;
}

//////////////////////////////////////////////////////////////// readStudents
// reads in a list of students from a file to the mediaLibrary
//
// Parameters: 
//	  ifstream &Students: stream to read the student information from
//   
// Pre: "Students" is open for reading
//
// Post: students put into the "myStudents" array
//
// Returns: none
//
// Called by: main
// Calls: student "set" functions
//
void mediaLibrary::readStudents (ifstream &Students) {
	string input, temp, city = "", state = "", zip = "", line3 = "";
	bool EMAIL = false;
	Student newStudent, blankStudent;
	while (getline (Students, input)) { //runs while there is still information in the file
		if (input == "@Name:") {
			getline (Students, temp);
			newStudent.setName (temp);
		}
		else if (input == "@E-mail:") {
			getline (Students, temp);
			newStudent.setEmail (temp);
			EMAIL = true;
		}
		else if (input == "@Address Line 1:") {
			getline (Students, temp);
			newStudent.setAddress (temp);
		}
		else if (input == "@Address Line 2:") {
			getline (Students, temp);
			newStudent.setApartment (temp);
		}
		else if (input == "@City:") {
			getline (Students, city);
		}
		else if (input == "@State:") {
			getline (Students, state);	
		}
		else if (input == "@Zipcode:") {
			getline (Students, zip);
		}
		else if (input == "@Phone Number:") {
			getline (Students, temp);
			newStudent.setNumber (temp);
		}
		else if (input == "@Other:") {
			getline (Students, temp);
			newStudent.setOther (temp);
		}
		else if (input == "@@") {
			if (EMAIL) {
				if (city != "" && state != "")
					line3 = line3 + city + ", " + state + " ";
				else if (city != "")
					line3 = line3 + city + " ";
				else if (state != "")
					line3 = line3 + state + " ";
				if (zip != "")
					line3 = line3 + zip;
				newStudent.setLine3 (line3);
				myStudents [numStudents] = newStudent;
				numStudents++;
				newStudent = blankStudent;
				getline (Students, temp);
				city = "";
				state = "";
				zip = "";
				line3 = "";
			}
			else {
				newStudent = blankStudent;
				getline (Students, temp);
				city = "";
				state = "";
				zip = "";
				line3 = "";
			}
		}
	}
}

//////////////////////////////////////////////////////////////// readItems
// reads in a list of items from a file to the mediaLibrary
//
// Parameters: 
//	  ifstream &Item: stream to read the item information from
//   
// Pre: "Items" is open for reading
//
// Post: Items put into the "myItems" array
//
// Returns: none
//
// Called by: main
// Calls: item "set" functions
//
void mediaLibrary::readItems (ifstream &Items) { //runs while there is still information in the file
	string input, temp;
	Item newItem, blankItem;
	while (getline (Items, input)) {
		if (input == "@Item:") {
			getline (Items, temp);
			newItem.setTitle (temp);
		}
		else if (input == "@Media Type:") {
			getline (Items, temp);
			newItem.setType (temp);
		}
		else if (input == "@by:") {
			getline (Items, temp);
			newItem.setArtist (temp);
		}
		else if (input == "@Owner:") {
			getline (Items, temp);
			newItem.setOwner (temp);
		}
		else if (input == "@Price:") {
			getline (Items, temp);
			newItem.setPrice (temp);
		}
		else if (input == "@Availability:") {
			getline (Items, temp);
			newItem.setAvailability (temp);
		}
		else if (input == "@@") {
			myItems [numItems] = newItem;
			numItems++;
			newItem = blankItem;
			getline (Items, temp);
		}
	}
}

//////////////////////////////////////////////////////////////// printStudents
// prints out all the students in "myStudents"
//
// Parameters: 
//	  ofstream &Log: the stream to print the students to
//   
// Pre: "Log" is open for writing
//
// Post: students formatted to the stream
//
// Returns: none
//
// Called by: mediaLibrary::readComands
// Calls: Student::printStudent
//
void mediaLibrary::printStudents (ofstream &Log) {
	Student blankStudent;
	for (short i = 0; i < 100; i++) { //runs down the list of students
		if (myStudents [i] != blankStudent) {
			myStudents [i].printStudent (Log);
			Log<<endl;
		}
	}
}

//////////////////////////////////////////////////////////////// printItems
// prints all the items in "myItems"
//
// Parameters: 
//	  ofstream &Log: the stream to print the items to
//   
// Pre: "Items" is open for reading
//
// Post: items formatted to the stream
//
// Returns: none
//
// Called by: mediaLibrary::readCommands
// Calls: Item::printItem

void mediaLibrary::printItems (ofstream &Log) { //runs down the list of items
	Item blankItem;
	for (short i = 0; i < 100; i++) {
		if (myItems [i] != blankItem) {
			myItems [i].printItem (Log, false);
			Log<<endl;
		}
	}
}

//////////////////////////////////////////////////////////////// findStudent
// returns the index in "myStudents" of the student with the passes Email
//
// Parameters: 
//	  string address: Email address to look for
//   
// Pre: string is passes
//
// Post: value of the index found
// 
// Returns: returns a index in "myStudents", or 100 if not found
//
// Called by: mediaLibrary::addStudent, mediaLibrary::deleteStudent
// Calls: 
short mediaLibrary::findStudent (string address) {
	for (short i = 0; i < 100; i++) {
		if ((myStudents [i].getEmail ()) == address)
			return i;
	}
	return 100;
}

//////////////////////////////////////////////////////////////// findBlankStudent
// finds the first available spot in "myStudents"
//
// Parameters: none
//   
// Pre: short declared to return to
//
// Post: index value returned
//
// Returns: the index of the first available spot in "myStudents", 100 if none found
//
// Called by: mediaLibrary::addStudent
// Calls: none
short mediaLibrary::findBlankStudent () {
	Student blankStudent;
	for (short i = 0; i < 100; i++) {
		if (myStudents [i] == blankStudent)
			return i;
	}
	return 100;
}

//////////////////////////////////////////////////////////////// findBlankItem
// finds the first available spot in "myItem"
//
// Parameters: none
//   
// Pre: short declared to return to
//
// Post: index value returned
//
// Returns: the index of the first available spot in "myItems", 100 if none found
//
// Called by: mediaLibrary::addItem
// Calls: none
short mediaLibrary::findBlankItem () {
	Item blankItem; 
	for (short i = 0; i < 100; i++) {
		if (myItems [i] == blankItem)
			return i;
	}
	return 100;
}

//////////////////////////////////////////////////////////////// printStudentItems
// prints out the items with the specified owner to a stream
//
// Parameters:
//	  string address: owner of the items to print
//	  ofstream &Log: stream to print the items to
//   
// Pre: Log is open for writing
//
// Post: items formatted to the stream
//
// Returns: none
//
// Called by: mediaLibrary::printAddress
// Calls: none
void mediaLibrary::printStudentItems (string address, ofstream &Log) {
	for (short i = 0; i < 100; i++) {
		if (myItems [i].getOwner () == address) {
			myItems [i].printItem (Log, true);
			Log<<endl;
		}
	}
}

//////////////////////////////////////////////////////////////// printAddress
// prints a student's information and items to a stream
//
// Parameters: 
//	  string address: Email address of the student to pring
//	  ofstream &Log: stream to print to
//   
// Pre: Log open for writing
//
// Post: student and their items formattd to the stream
//
// Returns: none
//
// Called by: mediaLibrary::readCommands
// Calls: mediaLibrary::printStudentItems
bool mediaLibrary::printAddress (string address, ofstream &Log) {
	short index = findStudent (address);
	if (index > 99) {
		Log<<address<<" not found."<<endl;
		return false;
	}
	myStudents [index].printStudent (Log);
	Log<<endl;
	printStudentItems (address, Log);
	return true;
}

//////////////////////////////////////////////////////////////// addItem
// adds an item to the media library
//
// Parameters: 
//	  ifstream &Commands: stream to read student information from
//	  ofstream &Log: stream to print results to 
//   
// Pre: "Commands" open for reading, "Log" open for writing
//
// Post: new item added to "myItems" if all formatting was correct, results recorded
//
// Returns: none
//
// Called by: mediaLibrary::readCommands
// Calls: Student "set" functions, mediaLibrary::findBlankItem, mediaLibrary::findStudent
void mediaLibrary::addItem (ifstream &Commands, ofstream &Log) {
	if (numItems < 100) {
		string input, temp;
		bool done = false;
		Item newItem;
		while (!done) {
			getline (Commands, input);
			if (input == "@Item:") {
				getline (Commands, temp);
				newItem.setTitle (temp);
			}
			else if (input == "@Media Type:") {
				getline (Commands, temp);
				newItem.setType (temp);
			}
			else if (input == "@by:") {
				getline (Commands, temp);
				newItem.setArtist (temp);
			}
			else if (input == "@Owner:") {
				getline (Commands, temp);
				newItem.setOwner (temp);
			}
			else if (input == "@Price:") {
				getline (Commands, temp);
				newItem.setPrice (temp);
			}
			else if (input == "@Availability:") {
				getline (Commands, temp);
				newItem.setAvailability (temp);
			}
			else if (input == "@@") {
				//getline (Commands, temp);
				done = true;
			}
		}
		if (newItem.getOwner () != "") {
			short index = findStudent (newItem.getOwner());
            if (index > 99) {
				Log<<"Failure"<<endl;
				return;
			}
		}
		for (short i = 0; i < 100; i++) {
			if (myItems [i] == newItem) {
				Log<<"Failure"<<endl;
				return;
			}			
		}
		short index = findBlankItem ();
		myItems [index] = newItem;
		numItems++;
		Log<<"Success"<<endl;
	}
	else 
		Log<<"Failure";
}

//////////////////////////////////////////////////////////////// addStudent
// adds a student to the media library
//
// Parameters: 
//	  ifstream &Commands: stream to read item information from
//	  ofstream &Log: stream to print results to 
//   
// Pre: "Commands" open for reading, "Log" open for writing
//
// Post: new student added to "myStudents" if all formatting was correct, results recorded
//
// Returns: none
//
// Called by: mediaLibrary::readCommands
// Calls: Item "set" functions, mediaLibrary::findBlankStudent, mediaLibrary::findStudent
void mediaLibrary::addStudent (ifstream &Commands, ofstream &Log) {
	if (numStudents < 100) {
		string input, temp, city = "", state = "", zip = "", line3 = "";
		bool EMAIL = false;
		bool done = false;
		Student newStudent;
		while (!done) {
			getline (Commands, input);
			if (input == "@Name:") {
				getline (Commands, temp);
				newStudent.setName (temp);
			}
			else if (input == "@E-mail:") {
				getline (Commands, temp);
				newStudent.setEmail (temp);
				EMAIL = true;
			}
			else if (input == "@Address Line 1:") {
				getline (Commands, temp);
				newStudent.setAddress (temp);
			}
			else if (input == "@Address Line 2:") {
				getline (Commands, temp);
				newStudent.setApartment (temp);
			}
			else if (input == "@City:") {
				getline (Commands, city);
			}
			else if (input == "@State:") {
				getline (Commands, state);	
			}
			else if (input == "@Zipcode:") {
				getline (Commands, zip);
			}
			else if (input == "@Phone Number:") {
				getline (Commands, temp);
				newStudent.setNumber (temp);
			}
			else if (input == "@Other:") {
				getline (Commands, temp);
				newStudent.setOther (temp);
			}
			else if (input == "@@") {
				if (EMAIL) {
					if (city != "" && state != "")
						line3 = line3 + city + ", " + state + " ";
					else if (city != "")
						line3 = line3 + city + ", ";
					else if (state != "")
						line3 = line3 + state + " ";
					if (zip != "")
						line3 = line3 + zip;
					newStudent.setLine3 (line3);
					done = true;
					getline (Commands, temp);
				}
			}
		}
		short index = findStudent (newStudent.getEmail());
		if (index <= 99) {
			cout<<index<<" ---------"<<endl;
			Log<<"Failure"<<endl;
		}
		else {
			index = findBlankStudent ();
			cout<<index<<endl;
			if (index > 99)
				Log<<"Failure"<<endl;
			else {
				myStudents [index] = newStudent;
				numStudents++;
				Log<<"Success"<<endl;
			}
		}
	}
}

//////////////////////////////////////////////////////////////// deleteStudent
// removes a student from "myStudents" and all the items they owned from "myItems"
//
// Parameters: 
//	  string address: Email address of the student to remove
//	  ofstream &Log: stream to print results to 
//   
// Pre: "Log" open for writing
//
// Post: student is blank, items owned by the student are blank
//
// Returns: none
//
// Called by: mediaLibrary::readCommands
// Calls: mediaLibrary::findStudent
void mediaLibrary::deleteStudent (string address, ofstream &Log) {
	short index = findStudent (address);
	if (index > 99) {
		Log<<"Failure"<<endl;
		return;
	}
	Item blankItem;
	Student blankStudent;
	for (short i = 0; i < 100; i++) {
		if (myItems [i].getOwner () == address) {
			myItems [i] = blankItem;
			numItems--;
		}
	}
	myStudents [index] = blankStudent;
	numStudents--;
	Log<<"Success"<<endl;
}

//////////////////////////////////////////////////////////////// readCommands
// reads commands from a stream and performs them on the media library
//
// Parameters: 
//	  ifstream &Commands: stream to read commands from
//	  ofstream &Log: stream to print results to 
//   
// Pre: "Commands" open for reading, "Log" open for writing
//
// Post: all commands performed on the media library
//
// Returns: none
//
// Called by: main
// Calls: mediaLibrary::printStudents, mediaLibrary::printItems, mediaLibrary::addStudent, mediaLibrary::addItem,
//		  mediaLibrary::printAddress, mediaLibrary::deleteStudent
void mediaLibrary::readCommands (ifstream &Commands, ofstream &Log) {
	string input, temp;
	bool exit = false;
	bool done = false;
	while (Commands>>input && !exit) {
		if (input == "print") {
			Commands>>input;
			if (input == "students") {//refers to the "Print students" command
				Log<<"print students"<<endl;
				printStudents (Log);
			}				
			else if (input == "items") { // refers to the "print items" commmand
				Log<<"print items"<<endl;
				printItems (Log);
			}
			else  { //refers to the "print address" command
				Log<<"print "<<input<<endl;
				printAddress (input, Log);
			}
		}
		else if (input == "add") {
			Commands>>input;
			if (input == "item") { //refers to the "add item" command
				Log<<"add item"<<endl;
				addItem (Commands, Log);
			}
			else if (input == "student") { //refers to the "ass student" command
				Log<<"add student"<<endl;
				addStudent (Commands, Log);
			}
		}
		else if (input == "delete") {
			Commands>>input;
			Log<<"delete "<<input<<endl;
			deleteStudent (input, Log);
		}
		else if (input == "quit") {
			Log<<input<<endl;
			exit = true;
		}
	}
}