Objective

You are given two header files, Song.hpp and RadList.hpp. Song holds a songs name, artist, album, duration (in seconds) and whether or not it contains explicit lyrics. RadList keeps track of all Song objects in the linked list List. RadList also has an iterator that points to the Song object currently playing.

Complete the implementation of these classes, and make sure all tests pass.

You will need to implement the following functions:

• Song Constructor - This should initialize all Song member variables.
• Song Getters - name, artist, album, minutes, seconds and explicit lyrics should all be returned with these member functions. Keep in mind the duration in seconds is stored. The minutes() and seconds() getters should return the minutes and leftover seconds of a song. For example a song with a duration of 291 seconds should return 4 minutes and 51 seconds.
• next() - This should move the nowPlaying iterator to the next song in the list.
• prev() - This should move the nowPlaying iterator to the previous song in the list.
• nowPlaying() - This should return the current Song the nowPlaying iterator is currently pointing to.
• addToList() - This should add the passed in song to the end of the list.
• playNext() - This should add the passed in song as the next song in the list right after the current song playing.

Skeleton Code for RadList.hpp

#pragma once
	#include
	#include
	#include
	#include
	#include
	#include "Song.hpp"
	class RadList {
	private:
	std::list queue_;
	std::list::iterator nowPlaying_;
	public:
	void loadPlaylist(const std::string&);
	void next();
	void prev();
	Song nowPlaying();
	void addToQueue(const Song&);
	void playNext(const Song&);
	};
	void RadList::loadPlaylist(const std::string& filename) {
	std::ifstream playlist(filename);
	if (playlist.is_open()) {
	std::string name, artist, album, duration, explicit_lyrics, toss;
	// Read in everything from comma seperated values file
	while (std::getline(playlist, name, ',')) {
	std::getline(playlist, toss, ' '); // ignore leading space
	std::getline(playlist, artist, ',');
	std::getline(playlist, toss, ' '); // ignore leading space
	std::getline(playlist, album, ',');
	std::getline(playlist, toss, ' '); // ignore leading space
	std::getline(playlist, duration, ',');
	std::getline(playlist, toss, ' '); // ignore leading space
	std::getline(playlist, explicit_lyrics);
	// Construct Song and add to queue
	queue_.push_back(Song(name, artist, album, stoi(duration), explicit_lyrics == "true"));
	}
	playlist.close();
	nowPlaying_ = queue_.begin();
	} else {
	throw std::invalid_argument("Could not open " + filename);
	}
	}

Skeleton Code for Song.hpp

#pragma once
	#include
	class Song {
	private:
	std::string name_;
	std::string artist_;
	std::string album_;
	unsigned int duration_;
	bool explicit_lyrics_;
	public:
	Song(std::string, std::string, std::string, unsigned int, bool);
	std::string name();
	std::string artist();
	std::string album();
	unsigned int minutes();
	unsigned int seconds();
	bool explicit_lyrics();
	};

Main to be tested:

#include
	#include
	#include "Song.hpp"
	#include "RadList.hpp"
	using std::string;
	using std::cout;
	using std::endl;
	// Helper Functions
	template
	void assertEquals(string, T, T);
	int main(int argc, char const *argv[]) {
	RadList jukebox;
	jukebox.loadPlaylist("Downtempo.csv");
	assertEquals("RadList.name()", static_cast("All In Forms"), jukebox.nowPlaying().name());
	jukebox.next();
	assertEquals("RadList.artist()", static_cast("Bonobo"), jukebox.nowPlaying().artist());
	jukebox.prev();
	assertEquals("RadList.minutes()", static_cast(4), jukebox.nowPlaying().minutes());
	assertEquals("RadList.seconds()", static_cast(51), jukebox.nowPlaying().seconds());
	jukebox.next();
	jukebox.addToQueue(Song("Black Canyon", "Ana Caravelle", "Basic Climb", 457, false));
	jukebox.next();
	jukebox.playNext(Song("Tumbleweed", "9 Lazy 9", "Sweet Jones", 192, false));
	assertEquals("RadList.name()/album()", jukebox.nowPlaying().name(), jukebox.nowPlaying().album());
	jukebox.addToQueue(Song("Building Steam With A Grain Of Salt", "DJ Shadow", "Endtroducing...", 399, true));
	jukebox.next();
	assertEquals("RadList.playNext())", static_cast("9 Lazy 9"), jukebox.nowPlaying().artist());
	jukebox.next();
	assertEquals("RadList.album()", static_cast("Silver Wilkinson"), jukebox.nowPlaying().album());
	jukebox.next();
	assertEquals("RadList.addToQueue()", static_cast("Ana Caravelle"), jukebox.nowPlaying().artist());
	jukebox.next();
	assertEquals("RadList.explicit_lyrics()", true, jukebox.nowPlaying().explicit_lyrics());
	return 0;
	}
	template
	void assertEquals(string test_name, T expected, T actual) {
	if (actual == expected) {
	cout << "[PASSED] " << test_name << endl;
	} else {
	cout << "[FAILED] " << test_name
	<< " - Expected: " << expected
	<< ", Actual: " << actual
	<< endl;
	}
	}