A Windows Phone 7 App from the Ground Up

using System;
using System.Collections.Generic;
using System.ComponentModel;

using MyLastFm.Model;

using Microsoft.Phone.Tasks;

using GalaSoft.MvvmLight.Command;

namespace MyLastFm.ViewModel
{
    public class TrackViewModel : RemoteObjectViewModel<Track>
    {
        public TrackViewModel(Track t)
            : base(t)
        {
            ViewModels.Args.Add("track", t.Name);
            ViewModels.Args.Add("artist", t.GetArtistName());
            ViewModels.Args.Add("autocorrect", "1");

            ViewModels.Add<Tag>(new ItemsSourceViewModel<Track, Tag>("Tags", item => item));
            ViewModels.Add<Shout>(new ShoutsViewModel<Track>());
            ViewModels.Add<Track>(new ItemsSourceViewModel<Track, Track>("Similar", item => new TrackViewModel(item)));

            Commands.Add("love", new RelayCommand(() => Item.Love()));
            Commands.Add("ban", new RelayCommand(() => Item.Ban()));
            Commands.Add("share", new RelayCommand(Share));
        }

        private void Share()
        {
            var task = new EmailAddressChooserTask();
            task.Completed += new EventHandler<EmailResult>(task_Completed);
            task.Show();
        }

        void task_Completed(object sender, EmailResult e)
        {
            if (e.TaskResult == TaskResult.OK)
                Item.Share(e.Email);

            ((EmailAddressChooserTask)sender).Completed -= new EventHandler<EmailResult>(task_Completed);
        }

        protected override string GetMarketplaceSearchTerms()
        {
            return base.GetMarketplaceSearchTerms() + " " + ArtistName;
        }

        public string ArtistName
        {
            get
            {
                return Item.GetArtistName();
            }
        }

        public string AlbumName
        {
            get
            {
                return Item.GetAlbumName();
            }
        }

        public AppViewModel Similar
        {
            get
            {
                return ViewModels.GetViewModel<Track>("Similar", Item.Similar);
            }
        }

        public AppViewModel Tags
        {
            get
            {
                return ViewModels.GetViewModel<Tag>("Tags", Item.Tags);
            }
        }

        public AppViewModel Shouts
        {
            get
            {
                return ViewModels.GetViewModel<Shout>("Shouts", Item.Shouts);
            }
        }

        protected override void SelectItem()
        {
            Navigate("/TrackPage.xaml", this);
        }
    }
}