app.cpp

// Cody Mitchell
// cs162 30179
// This program will load all songs from songs.txt then show a menu selection that lets the user add, remove and search for songs by artist name.

#include <iostream>
#include <fstream>
#include <cstring>

using namespace std;

const int STRING_SIZE = 256;
const int LINE_SIZE = 256;
const int DATABASE_SIZE = 256;
int addSong(struct Song songArray);

struct Song{
	char title[STRING_SIZE];
	char artist[STRING_SIZE];
	char minutes[STRING_SIZE];
	char seconds[STRING_SIZE];
	char album[STRING_SIZE];
};	

struct Song* load_database(int& arraySize){
	struct Song * songArray = new struct Song[DATABASE_SIZE];
	
	char title[STRING_SIZE];
        char artist[STRING_SIZE];
        char minutes[STRING_SIZE];
        char seconds[STRING_SIZE];
        char album[STRING_SIZE];	
	
	char line[STRING_SIZE];
	char* s = ";";
	
	ifstream file("songs.txt");
	
	if(!file.is_open()){
		return NULL;
	}
		int j = 0;
		// Professor Notes
		/* 
		   istream cin;	//input stream
		   ifstream file; //file input stream
		*/
		/*
		while(!file.eof()){
			file.get(songArray[j].title, STRING_SIZE, ';');
			file.ignore(STRING_SIZE, ';');
			
			file.get(songArray[j].artist, STRING_SIZE, ';');
			file.ignore(STRING_SIZE, ';');
		}
	
	
		*/			
		while(file.getline(line, LINE_SIZE)){			
			char* token;
			int i = 0;
				
			token = strtok(line, s);	
				
			while( token != NULL ) 
  			{
  			  
      			if(i == 0){
			strcpy(songArray[j].title, token);
		       	}else if (i == 1){
			strcpy(songArray[j].artist, token);
			}else if (i == 2){
			strcpy(songArray[j].minutes, token);
			}else if (i == 3){
			strcpy(songArray[j].seconds, token);
			}else if (i == 4){
                        strcpy(songArray[j].album, token);
                        }
			
			i++;
			
      			    token = strtok(NULL, s);
   			}
			j++;
			arraySize++;
		}
		file.close();
	
	return songArray;
}
int getMenuSelectionFromUser(){
	int menuSelection			;
	
	cout << endl;
	cout << "|------------------------------------------------|" << endl;
	cout << "Enter 1 to input a new song." << endl;
	cout << "Enter 2 to display information from all songs." << endl;
	cout << "Enter 3 to remove a song by index." << endl;
	cout << "Enter 4 to search for songs by a specific artist" << endl;
	cout << "Enter 5 to quit." << endl;	
	cout << "|------------------------------------------------|" << endl;
	cout << endl;
	
	cin >> menuSelection;

	return menuSelection;
	
}
void addSong(struct Song * songArray, int& size){
	char userConfirmation = 'n';
	char inputData[STRING_SIZE];
	
	
	cin.clear();	
	while(userConfirmation =='n'){

           	cin.clear();
                cin.ignore();
	
		cout << "What is the Song Title?" << endl;
		cin.get(songArray[size].title, STRING_SIZE, '\n');
		
		cin.clear();
                cin.ignore();		
		
		cout << "What is the artist name?" << endl;
		cin.get(songArray[size].artist, STRING_SIZE, '\n');
	
		cin.clear();
                cin.ignore();
		
		cout << "How many minutes is the song?" << endl;
		cin.get(songArray[size].minutes, STRING_SIZE, '\n');
		
		cin.clear();
                cin.ignore();
		
		cout << "How many seconds is the song?" << endl;
		cin.get(songArray[size].seconds, STRING_SIZE, '\n');
			
		cin.clear();
                cin.ignore();		

		cout << "What is the album title?" << endl;
		cin.get(songArray[size].album, STRING_SIZE, '\n');

		cout << "You Entered..." << endl;
		cout << "Title: " << songArray[size].title << endl;
		cout << "Artist: " << songArray[size].artist << endl;
		cout << "Minutes: " << songArray[size].minutes << endl;
		cout << "Seconds: " << songArray[size].seconds << endl;
		cout << "Album: " << songArray[size].album << endl;
	
		cout << "Is this correct? y or n" << endl;
		cin >> userConfirmation;
			
	}
	
	
	// Append songs.txt
	ofstream outfile;
	outfile.open("songs.txt", ios_base::app);
	
	outfile << songArray[size].title << ";" << songArray[size].artist << ";" << songArray[size].minutes << ";" << songArray[size].seconds << ";" << songArray[size].album << '\n';
	
	outfile.close();
	size++;
}
void displayAllSongs(struct Song * songArray, int size){

	for(int i = 0; i < size; i++){
		cout << "[" << i << "]" << endl;
		cout << "    " << "Title: " << songArray[i].title << endl;
		cout << "    " << "Artist: " << songArray[i].artist << endl;
		cout << "    " << "Minutes: " << songArray[i].minutes << endl;
		cout << "    " << "Seconds: " << songArray[i].seconds << endl;
		cout << "    " << "Album: " << songArray[i].album << endl;
	}

}
void removeSong(struct Song * songArray, int& size){
	int index;
	cout << "What Song index would you like to remove?" << endl;
	cin >> index;
	if(index == 0){
		copy(songArray + 1, songArray + size, songArray + 0);
	}else{
		copy(songArray + (index - 1), songArray + size, songArray + index);
	}
	size--;
	
	ofstream outfile;
        outfile.open("songs.txt");

	// Writes over the entire songs.txt file	
	for(int i = 0; i < size; i++){

	        outfile << songArray[i].title << ";" << songArray[i].artist << ";" << songArray[i].minutes << ";" << songArray[i].seconds << ";" << songArray[i].album << '\n';
	}
        outfile.close();
}
void artistSearch(struct Song * songArray, int size){
	char artist[STRING_SIZE];
	memset(artist, 0, STRING_SIZE);
	cin.clear();
	cin.ignore();
	
	cout << "What artist's songs are you searching for?" << endl;
	cin.get(artist, STRING_SIZE, '\n');
 	
	for(int i = 0; i < size; i++){

		if(strcmp(artist, songArray[i].artist) == 0){
		    cout << "[" << i << "]" << endl;
                    cout << "    " << "Title: " << songArray[i].title << endl;
            	    cout << "    " << "Artist: " << songArray[i].artist << endl;
             	    cout << "    " << "Minutes: " << songArray[i].minutes << endl;
            	    cout << "    " << "Seconds: " << songArray[i].seconds << endl;
            	    cout << "    " << "Album: " << songArray[i].album << endl;
		}
	}
	
}

int main(){
	struct Song* db;
	int input = 0;
	int size = 0;
	
	db = load_database(size);
	if(db == NULL){
		cout << "db is NULL, file was not open." << endl;
	}	

	while(input != 5){
		input = getMenuSelectionFromUser();

		if(input == 1){
			addSong(db, size);				
		}else if(input == 2){
			displayAllSongs(db, size);
		}else if(input == 3){
			removeSong(db, size);
		}else if(input == 4){
			artistSearch(db, size);
		}
	}	
	
	delete [] db;

	return 0;
}