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UserApi.GetRecentStations

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This commit is contained in:
Rikki Tooley 2013-06-15 17:02:11 +01:00
parent 7ab098d5a8
commit 243d4558e2
12 changed files with 460 additions and 64 deletions
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40
IF.Lastfm.Core/Api/Helpers/PageResponse.cs
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@ -1,19 +1,33 @@
using System;
using System.Collections;
using System.Collections.Generic;
using IF.Lastfm.Core.Api.Enums;
using Newtonsoft.Json.Linq;
namespace IF.Lastfm.Core.Api.Helpers
{
public class PageResponse<T> : IEnumerable<T>
{
private int _page = 1;
private int _totalPages = 1;
#region Properties
public IEnumerable<T> Content { get; set; }
public bool Success { get; set; }
public LastFmApiError Error { get; set; }
public int Page { get; set; }
public int TotalPages { get; set; }
public int Page
{
get { return _page; }
set { _page = value; }
}
public int TotalPages
{
get { return _totalPages; }
set { _totalPages = value; }
}
#endregion
@ -72,5 +86,27 @@ public static PageResponse<T> CreateErrorResponse(LastFmApiError error)
}
#endregion
public void AddPageInfoFromJToken(JToken attrToken)
{
if (attrToken == null)
{
return;
}
var page = attrToken.Value<string>("page");
Page = !string.IsNullOrWhiteSpace(page) ? Convert.ToInt32(page) : 1;
var totalPages = attrToken.Value<string>("totalPages");
TotalPages = !string.IsNullOrWhiteSpace(totalPages) ? Convert.ToInt32(totalPages) : 1;
}
// {"@attr": {
// "user": "tehrikkit",
// "page": "",
// "perPage": "",
// "totalPages": "",
// "total": "15"
//}}
}
}

14
IF.Lastfm.Core/Api/IUserApi.cs
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@ -18,17 +18,7 @@ Task<PageResponse<Album>> GetTopAlbums(LastStatsTimeSpan span,
Task<PageResponse<Track>> GetRecentScrobbles(string username, DateTime since,
int startIndex = 0,
int endIndex = LastFm.DefaultPageLength);
}
/*
*
* limit (Optional) : The number of results to fetch per page. Defaults to 50. Maximum is 200.
user (Required) : The last.fm username to fetch the recent tracks of.
page (Optional) : The page number to fetch. Defaults to first page.
from (Optional) : Beginning timestamp of a range - only display scrobbles after this time, in UNIX timestamp format (integer number of seconds since 00:00:00, January 1st 1970 UTC). This must be in the UTC time zone.
extended (0|1) (Optional) : Includes extended data in each artist, and whether or not the user has loved each track
to (Optional) : End timestamp of a range - only display scrobbles before this time, in UNIX timestamp format (integer number of seconds since 00:00:00, January 1st 1970 UTC). This must be in the UTC time zone.
api_key (Required) : A Last.fm API key.
*
* */
Task<PageResponse<Station>> GetRecentStations(int pagenumber, int count = LastFm.DefaultPageLength);
}
}

52
IF.Lastfm.Core/Api/UserApi.cs
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@ -107,12 +107,7 @@ public async Task<PageResponse<Track>> GetRecentScrobbles(string username, DateT
var pageresponse = PageResponse<Track>.CreateSuccessResponse(tracks);
var attrToken = jtoken.SelectToken("@attr");
if (attrToken != null)
{
pageresponse.Page = attrToken.Value<int>("page");
pageresponse.TotalPages = attrToken.Value<int>("totalPages");
}
pageresponse.AddPageInfoFromJToken(attrToken);
return pageresponse;
}
@ -121,5 +116,50 @@ public async Task<PageResponse<Track>> GetRecentScrobbles(string username, DateT
return PageResponse<Track>.CreateErrorResponse(error);
}
}
public async Task<PageResponse<Station>> GetRecentStations(int pagenumber, int count = LastFm.DefaultPageLength)
{
const string apiMethod = "user.getRecentStations";
var methodParameters = new Dictionary<string, string>
{
{"user", Auth.User.Username},
{"page", pagenumber.ToString()},
{"limit", count.ToString()},
{"sk", Auth.User.Token}
};
var apisig = Auth.GenerateMethodSignature(apiMethod, methodParameters);
var postContent = LastFm.CreatePostBody(apiMethod,
Auth.ApiKey,
apisig,
methodParameters);
var httpClient = new HttpClient();
var lastResponse = await httpClient.PostAsync(LastFm.ApiRoot, postContent);
var json = await lastResponse.Content.ReadAsStringAsync();
LastFmApiError error;
if (LastFm.IsResponseValid(json, out error) && lastResponse.IsSuccessStatusCode)
{
var jtoken = JsonConvert.DeserializeObject<JToken>(json).SelectToken("recentstations");
var stationsToken = jtoken.SelectToken("station");
var stations = stationsToken.Children().Select(Station.ParseJToken).ToList();
var pageresponse = PageResponse<Station>.CreateSuccessResponse(stations);
var attrToken = jtoken.SelectToken("@attr");
pageresponse.AddPageInfoFromJToken(attrToken);
return pageresponse;
}
else
{
return PageResponse<Station>.CreateErrorResponse(error);
}
}
}
}

1
IF.Lastfm.Core/IF.Lastfm.Core.csproj
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@ -64,6 +64,7 @@
<Compile Include="Objects\BuyLink.cs" />
<Compile Include="Objects\CountryCode.cs" />
<Compile Include="Objects\Shout.cs" />
<Compile Include="Objects\Station.cs" />
<Compile Include="Objects\Tag.cs" />
<Compile Include="Objects\Track.cs" />
<Compile Include="Properties\AssemblyInfo.cs" />

22
IF.Lastfm.Core/Objects/Station.cs Normal file
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@ -0,0 +1,22 @@
using System;
using Newtonsoft.Json.Linq;
namespace IF.Lastfm.Core.Objects
{
public class Station
{
public string Name { get; set; }
public Uri Url { get; set; }
internal static Station ParseJToken(JToken token)
{
var s = new Station();
s.Name = token.Value<string>("name");
s.Url = new Uri(token.Value<string>("url"), UriKind.Absolute);
return s;
}
}
}

8
IF.Lastfm.Demo.Apollo/IF.Lastfm.Demo.Apollo.csproj
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@ -102,6 +102,9 @@
<Compile Include="MainPage.xaml.cs">
<DependentUpon>MainPage.xaml</DependentUpon>
</Compile>
<Compile Include="Pages\UserApi\RecentStations.xaml.cs">
<DependentUpon>RecentStations.xaml</DependentUpon>
</Compile>
<Compile Include="Properties\Annotations.cs" />
<Compile Include="Properties\AssemblyInfo.cs" />
<Compile Include="Resources\AppResources.Designer.cs">
@ -119,6 +122,7 @@
</Compile>
<Compile Include="ViewModels\PageProgress.cs" />
<Compile Include="ViewModels\TrackApi\ScrobblingTestViewModel.cs" />
<Compile Include="ViewModels\UserApi\RecentStationsTestViewModel.cs" />
</ItemGroup>
<ItemGroup>
<ApplicationDefinition Include="App.xaml">
@ -133,6 +137,10 @@
<SubType>Designer</SubType>
<Generator>MSBuild:Compile</Generator>
</Page>
<Page Include="Pages\UserApi\RecentStations.xaml">
<Generator>MSBuild:Compile</Generator>
<SubType>Designer</SubType>
</Page>
<Page Include="Pages\UserApi\History.xaml">
<Generator>MSBuild:Compile</Generator>
<SubType>Designer</SubType>

1
IF.Lastfm.Demo.Apollo/Pages/ApiTest.xaml
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@ -38,6 +38,7 @@
<Button Content="Scrobbling" Click="OnScrobblingLinkClick"/>
<Button Content="History" Click="OnHistoryLinkClick"/>
<Button Content="Recent Stations" Click="OnRecentStationsLinkClick"/>
</StackPanel>
</Grid>

5
IF.Lastfm.Demo.Apollo/Pages/ApiTest.xaml.cs
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@ -25,5 +25,10 @@ private void OnHistoryLinkClick(object sender, RoutedEventArgs e)
{
NavigationService.Navigate(new Uri("/Pages/UserApi/History.xaml", UriKind.Relative));
}
private void OnRecentStationsLinkClick(object sender, RoutedEventArgs e)
{
NavigationService.Navigate(new Uri("/Pages/UserApi/RecentStations.xaml", UriKind.Relative));
}
}
}

50
IF.Lastfm.Demo.Apollo/Pages/UserApi/History.xaml.cs
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@ -3,8 +3,6 @@
using System.ComponentModel;
using System.Windows;
using System.Windows.Media;
using System.Windows.Navigation;
using IF.Lastfm.Demo.Apollo.TestPages.ViewModels;
using IF.Lastfm.Demo.Apollo.ViewModels.UserApi;
using Microsoft.Phone.Controls;
using Microsoft.Phone.Shell;
@ -36,32 +34,14 @@ private async void OnLoaded(object sender, RoutedEventArgs e)
var element = VisualTreeHelper.GetChild(PageScroller, 0) as FrameworkElement;
if (element != null)
{
//var group = FindVisualState(element, "ScrollStates");
//if (group != null)
//{
// group.CurrentStateChanging += group_CurrentStateChanging;
//}
var vgroup = FindVisualState(element, "VerticalCompression");
if (vgroup != null)
{
vgroup.CurrentStateChanging += OnScrolled;
}
//var hgroup = FindVisualState(element, "HorizontalCompression");
//if (hgroup != null)
//{
// hgroup.CurrentStateChanging += hgroup_CurrentStateChanging;
//}
}
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
}
private void OnViewModelPropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (e.PropertyName == "InProgress")
@ -92,39 +72,21 @@ private async void OnScrolled(object sender, VisualStateChangedEventArgs visualS
}
}
private UIElement FindElementRecursive(FrameworkElement parent, Type targetType)
{
int childCount = VisualTreeHelper.GetChildrenCount(parent);
UIElement returnElement = null;
if (childCount > 0)
{
for (int i = 0; i < childCount; i++)
{
Object element = VisualTreeHelper.GetChild(parent, i);
if (element.GetType() == targetType)
{
return element as UIElement;
}
else
{
returnElement = FindElementRecursive(VisualTreeHelper.GetChild(parent, i) as FrameworkElement,
targetType);
}
}
}
return returnElement;
}
private VisualStateGroup FindVisualState(FrameworkElement element, string name)
{
if (element == null)
{
return null;
}
IList groups = VisualStateManager.GetVisualStateGroups(element);
foreach (VisualStateGroup group in groups)
{
if (group.Name == name)
{
return group;
}
}
return null;
}

118
IF.Lastfm.Demo.Apollo/Pages/UserApi/RecentStations.xaml Normal file
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@ -0,0 +1,118 @@
<phone:PhoneApplicationPage
x:Class="IF.Lastfm.Demo.Apollo.Pages.UserApi.RecentStations"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
xmlns:behaviors="clr-namespace:Cimbalino.Phone.Toolkit.Behaviors;assembly=Cimbalino.Phone.Toolkit"
xmlns:toolkit="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone.Controls.Toolkit"
xmlns:userApi="clr-namespace:IF.Lastfm.Demo.Apollo.ViewModels.UserApi"
FontFamily="{StaticResource PhoneFontFamilyNormal}"
FontSize="{StaticResource PhoneFontSizeNormal}"
Foreground="{StaticResource PhoneForegroundBrush}"
SupportedOrientations="Portrait" Orientation="Portrait"
mc:Ignorable="d"
shell:SystemTray.IsVisible="True"
d:DataContext="{d:DesignInstance userApi:RecentStationsTestViewModel, IsDesignTimeCreatable=True}">
<phone:PhoneApplicationPage.Resources>
<Style x:Key="EndlessScrollerTemplate" TargetType="ScrollViewer">
<Setter Property="VerticalScrollBarVisibility" Value="Auto" />
<Setter Property="HorizontalScrollBarVisibility" Value="Auto" />
<Setter Property="Background" Value="Transparent" />
<Setter Property="Padding" Value="0" />
<Setter Property="BorderThickness" Value="0" />
<Setter Property="BorderBrush" Value="Transparent" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ScrollViewer">
<Border BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
Background="{TemplateBinding Background}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="ScrollStates">
<VisualStateGroup.Transitions>
<VisualTransition GeneratedDuration="00:00:00.5" />
</VisualStateGroup.Transitions>
<VisualState x:Name="Scrolling">
<Storyboard>
<DoubleAnimation Storyboard.TargetName="VerticalScrollBar"
Storyboard.TargetProperty="Opacity" To="1" Duration="0" />
<DoubleAnimation Storyboard.TargetName="HorizontalScrollBar"
Storyboard.TargetProperty="Opacity" To="1" Duration="0" />
</Storyboard>
</VisualState>
<VisualState x:Name="NotScrolling">
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="VerticalCompression">
<VisualState x:Name="NoVerticalCompression" />
<VisualState x:Name="CompressionTop" />
<VisualState x:Name="CompressionBottom" />
</VisualStateGroup>
<VisualStateGroup x:Name="HorizontalCompression">
<VisualState x:Name="NoHorizontalCompression" />
<VisualState x:Name="CompressionLeft" />
<VisualState x:Name="CompressionRight" />
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid Margin="{TemplateBinding Padding}">
<ScrollContentPresenter x:Name="ScrollContentPresenter"
Content="{TemplateBinding Content}"
ContentTemplate="{TemplateBinding ContentTemplate}" />
<ScrollBar x:Name="VerticalScrollBar" IsHitTestVisible="False" Height="Auto" Width="5"
HorizontalAlignment="Right" VerticalAlignment="Stretch"
Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}"
IsTabStop="False" Maximum="{TemplateBinding ScrollableHeight}" Minimum="0"
Value="{TemplateBinding VerticalOffset}"
Orientation="Vertical" ViewportSize="{TemplateBinding ViewportHeight}" />
<ScrollBar x:Name="HorizontalScrollBar" IsHitTestVisible="False" Width="Auto"
Height="5"
HorizontalAlignment="Stretch" VerticalAlignment="Bottom"
Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}"
IsTabStop="False" Maximum="{TemplateBinding ScrollableWidth}" Minimum="0"
Value="{TemplateBinding HorizontalOffset}"
Orientation="Horizontal" ViewportSize="{TemplateBinding ViewportWidth}" />
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</phone:PhoneApplicationPage.Resources>
<Grid x:Name="LayoutRoot" Background="Transparent">
<ScrollViewer x:Name="PageScroller"
Style="{StaticResource EndlessScrollerTemplate}"
HorizontalScrollBarVisibility="Disabled"
VerticalAlignment="Stretch">
<StackPanel x:Name="ContentPanel"
Margin="12,17,12,0">
<TextBlock Text="LASTFM-WP DEMO APP"
Style="{StaticResource PhoneTextNormalStyle}"
Margin="12,0" />
<TextBlock Text="recent stations"
Margin="9,-7,0,12"
Style="{StaticResource PhoneTextTitle1Style}" />
<TextBlock Text="{Binding Auth.User.Username}"
Style="{StaticResource PhoneTextNormalStyle}"
Margin="12,0" />
<ItemsControl ItemsSource="{Binding Stations}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<StackPanel Margin="0,12">
<TextBlock Text="{Binding Name}"
Style="{StaticResource PhoneTextLargeStyle}" />
</StackPanel>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</StackPanel>
</ScrollViewer>
</Grid>
</phone:PhoneApplicationPage>

92
IF.Lastfm.Demo.Apollo/Pages/UserApi/RecentStations.xaml.cs Normal file
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@ -0,0 +1,92 @@
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Windows;
using System.Windows.Media;
using IF.Lastfm.Demo.Apollo.ViewModels.UserApi;
using Microsoft.Phone.Controls;
using Microsoft.Phone.Shell;
namespace IF.Lastfm.Demo.Apollo.Pages.UserApi
{
public partial class RecentStations : PhoneApplicationPage
{
private RecentStationsTestViewModel _viewModel;
public RecentStations()
{
_viewModel = new RecentStationsTestViewModel();
DataContext = _viewModel;
InitializeComponent();
_viewModel.PropertyChanged += OnViewModelPropertyChanged;
Loaded += OnLoaded;
}
private async void OnLoaded(object sender, RoutedEventArgs e)
{
await _viewModel.NavigatedTo();
await _viewModel.GetRecentStations();
var element = VisualTreeHelper.GetChild(PageScroller, 0) as FrameworkElement;
if (element != null)
{
var vgroup = FindVisualState(element, "VerticalCompression");
if (vgroup != null)
{
vgroup.CurrentStateChanging += OnScrolled;
}
}
}
private void OnViewModelPropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (e.PropertyName == "InProgress")
{
if (_viewModel.InProgress)
{
SystemTray.ProgressIndicator = new ProgressIndicator
{
IsVisible = _viewModel.InProgress,
IsIndeterminate = _viewModel.InProgress
};
}
else
{
SystemTray.ProgressIndicator = null;
}
}
}
private async void OnScrolled(object sender, VisualStateChangedEventArgs visualStateChangedEventArgs)
{
if (PageScroller.VerticalOffset >= PageScroller.ScrollableHeight - 10)
{
if (!_viewModel.InProgress)
{
await _viewModel.GetRecentStations();
}
}
}
private VisualStateGroup FindVisualState(FrameworkElement element, string name)
{
if (element == null)
{
return null;
}
var groups = VisualStateManager.GetVisualStateGroups(element);
foreach (VisualStateGroup group in groups)
{
if (group.Name == name)
{
return group;
}
}
return null;
}
}
}

121
IF.Lastfm.Demo.Apollo/ViewModels/UserApi/RecentStationsTestViewModel.cs Normal file
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@ -0,0 +1,121 @@
using System;
using System.Collections.ObjectModel;
using System.Threading.Tasks;
using Cimbalino.Phone.Toolkit.Services;
using IF.Lastfm.Core.Api;
using IF.Lastfm.Core.Objects;
using IF.Lastfm.Demo.Apollo.TestPages.ViewModels;
namespace IF.Lastfm.Demo.Apollo.ViewModels.UserApi
{
public class RecentStationsTestViewModel : BaseViewModel
{
private Auth _auth;
private bool _inProgress;
private PageProgress _stationPageProgress;
private ObservableCollection<Station> _stations;
#region Properties
public Auth Auth
{
get { return _auth; }
set
{
if (Equals(value, _auth))
{
return;
}
_auth = value;
OnPropertyChanged();
}
}
public bool InProgress
{
get { return _inProgress; }
set
{
if (value.Equals(_inProgress))
{
return;
}
_inProgress = value;
OnPropertyChanged();
}
}
public ObservableCollection<Station> Stations
{
get { return _stations; }
set
{
if (Equals(value, _stations)) return;
_stations = value;
OnPropertyChanged();
}
}
#endregion
public RecentStationsTestViewModel()
{
_stationPageProgress = new PageProgress();
Stations = new ObservableCollection<Station>();
}
public async Task NavigatedTo()
{
await Authenticate();
}
private async Task Authenticate()
{
var appsettings = new ApplicationSettingsService();
var apikey = appsettings.Get<string>("apikey");
var apisecret = appsettings.Get<string>("apisecret");
var username = appsettings.Get<string>("username");
var pass = appsettings.Get<string>("pass");
var auth = new Auth(apikey, apisecret);
InProgress = true;
await auth.GetSessionTokenAsync(username, pass);
InProgress = false;
Auth = auth;
}
public async Task GetRecentStations()
{
if (!_stationPageProgress.CanGoToNextPage())
{
return;
}
InProgress = true;
var userApi = new Core.Api.UserApi(Auth);
var response = await userApi.GetRecentStations(_stationPageProgress.ExpectedPage, 5);
_stationPageProgress.PageLoaded(response.Success);
if (response.Success)
{
foreach (var s in response.Content)
{
Stations.Add(s);
}
}
_stationPageProgress.TotalPages = response.TotalPages;
InProgress = false;
}
}
}