require('chai').should();

import queueStore from '../../stores/queue';
import artists from '../blobs/media';

let songs = artists[2].albums[0].songs;

describe('stores/queue', () => {
    beforeEach(() => {
        queueStore.state.songs = songs;
        queueStore.state.current = songs[1];
    });

    describe('#all', () => {
        it('correctly returns all queued songs', () => {
            queueStore.all().should.equal(songs);    
        });
    });

    describe('#first', () => {
        it('correctly returns the first queued song', () => {
            queueStore.first().title.should.equal('No bravery');
        });
    });

    describe('#last', () => {
        it('correctly returns the last queued song', () => {
            queueStore.last().title.should.equal('Tears and rain');
        });
    });

    describe('#queue', () => {
        beforeEach(() => queueStore.state.songs = songs);

        let song = artists[0].albums[0].songs[0];

        it('correctly appends a song to end of the queue', () => {
            queueStore.queue(song);
            queueStore.last().title.should.equal('I Swear');
        });

        it('correctly prepends a song to top of the queue', () => {
            queueStore.queue(song, false, true);
            queueStore.first().title.should.equal('I Swear');
        });

        it('correctly replaces the whole queue', () => {
            queueStore.queue(song, true);
            queueStore.all().length.should.equal(1);
            queueStore.first().title.should.equal('I Swear');
        });
    });

    describe('#unqueue', () => {
        beforeEach(() => queueStore.state.songs = songs);

        it('correctly removes a song from queue', () => {
            queueStore.unqueue(queueStore.state.songs[0]);
            queueStore.first().title.should.equal('So long, Jimmy'); // Oh the irony.
        });

        it('correctly removes mutiple songs from queue', () => {
            queueStore.unqueue([queueStore.state.songs[0], queueStore.state.songs[1]]);
            queueStore.first().title.should.equal('Wisemen');
        });
    });

    describe('#clear', () => {
        it('correctly clears all songs from queue', () => {
            queueStore.clear();
            queueStore.state.songs.length.should.equal(0);
        });
    });

    describe('#current', () => {
        it('returns the correct current song', () => {
            queueStore.current().title.should.equal('So long, Jimmy');
        });

        it('successfully sets the current song', () => {
            queueStore.current(queueStore.state.songs[0]).title.should.equal('No bravery');
        });
    });

    describe('#getNextSong', () => {
        it('correctly gets the next song in queue', () => {
            queueStore.getNextSong().title.should.equal('Wisemen');
        });

        it('correctly returns null if at end of queue', () => {
            queueStore.current(queueStore.state.songs[queueStore.state.songs.length - 1]);
            (queueStore.getNextSong() === null).should.be.true;
        });
    });

    describe('#getPrevSong', () => {
        it('correctly gets the previous song in queue', () => {
            queueStore.getPrevSong().title.should.equal('No bravery');
        });

        it('correctly returns null if at end of queue', () => {
            queueStore.current(queueStore.state.songs[0]);
            (queueStore.getPrevSong() === null).should.be.true;
        });
    });
});