using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using MusicStore.Data;
using System.Data.Entity;
using MusicStore.Model;
using MusicStore.Data.Migrations;
using System.Net.Http;
using System.Net.Http.Headers;

namespace MusicStore.Client
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("{0}", new String('-', 20));
            Console.WriteLine("GetAll<Artists>()");
            Console.WriteLine("{0}", new String('-', 20));

            var allArtists = GetAll<Artist>("artists");
            if (allArtists != null)
            {
                foreach (var item in allArtists)
                {
                    Console.WriteLine("{0} {1} {2}", item.ID, item.FullName, item.Country);
                }
            }

            Console.WriteLine("{0}", new String('-', 20));
            Console.WriteLine("GetAll<Songs>()");
            Console.WriteLine("{0}", new String('-', 20));

            var allSongs = GetAll<Song>("songs");
            if (allSongs != null)
            {
                foreach (var item in allSongs)
                {
                    Console.WriteLine("{0} {1} {2}", item.ID, item.Title, item.Artist.FullName);
                }
            }

            Console.WriteLine("{0}", new String('-', 20));
            Console.WriteLine("GetAll<Albums>()");
            Console.WriteLine("{0}", new String('-', 20));

            var allAlbums = GetAll<Album>("albums");
            if (allAlbums != null)
            {
                foreach (var item in allAlbums)
                {
                    Console.WriteLine("Album: {0} {1} {2}", item.ID, item.Title, item.Producer);
                    foreach (var artist in item.Artists)
                    {
                        Console.WriteLine("Artist: {0}", artist.FullName);
                    }
                    foreach (var song in item.Songs)
                    {
                        Console.WriteLine("Song: {0}", song.Title);
                    }
                }
            }

            Console.WriteLine("{0}", new String('-', 20));
            Console.WriteLine("GetItem<Artist>()");
            Console.WriteLine("{0}", new String('-', 20));

            var artistItem = GetItem<Artist>("artists",1);
            if (artistItem != null)
            {
                Console.WriteLine("{0} {1}",artistItem.ID, artistItem.FullName);
            }

        }

        private static IEnumerable<T> GetAll<T>(string repository)
        {
            var client = new HttpClient
            {
                BaseAddress = new Uri("http://localhost:31109/")
            };
            client.DefaultRequestHeaders.Accept.Add(new
                MediaTypeWithQualityHeaderValue("application/json"));
            HttpResponseMessage response =
                client.GetAsync("api/" + repository).Result;
            if (response.IsSuccessStatusCode)
            {
                var artists = response.Content
                    .ReadAsAsync<IEnumerable<T>>().Result;
                return artists;
            }
            else
            {
                Console.WriteLine("{0} ({1})",
                    (int)response.StatusCode, response.ReasonPhrase);
                return null;
            }
        }

        //where T: class, new() allows to return null
        private static T GetItem<T>(string repository, int ID)
            where T : class, new()
        {
            var client = new HttpClient
            {
                BaseAddress = new Uri("http://localhost:31109/")
            };
            client.DefaultRequestHeaders.Accept.Add(new
                MediaTypeWithQualityHeaderValue("application/json"));
            HttpResponseMessage response =
                client.GetAsync("api/" + repository + "/" + ID).Result;
            if (response.IsSuccessStatusCode)
            {
                var artists = response.Content
                    .ReadAsAsync<T>().Result;
                return artists;
            }
            else
            {
                Console.WriteLine("{0} ({1})",
                    (int)response.StatusCode, response.ReasonPhrase);
                return null;
            }
        }
    }
}